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import qemu-kvm-4.2.0-58.module+el8.5.0+12272+74ace547

This commit is contained in:
CentOS Sources 2021-10-05 19:57:49 -04:00 committed by Stepan Oksanichenko
parent bade540a5a
commit 10f2083cbb
62 changed files with 7326 additions and 4 deletions
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68
SOURCES/kvm-Add-mtod_check.patch Normal file
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@ -0,0 +1,68 @@
From 52bf635da30c75d0fdb0a3e7e7b9a2483ca033fc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
Date: Thu, 29 Jul 2021 04:55:59 -0400
Subject: [PATCH 05/14] Add mtod_check()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: <20210708082537.1550263-2-marcandre.lureau@redhat.com>
Patchwork-id: 101819
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 1/8] Add mtod_check()
Bugzilla: 1970819 1970835 1970843 1970853
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Eric Blake <eblake@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
From: Marc-André Lureau <marcandre.lureau@redhat.com>
Recent security issues demonstrate the lack of safety care when casting
a mbuf to a particular structure type. At least, it should check that
the buffer is large enough. The following patches will make use of this
function.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
(cherry picked from commit 93e645e72a056ec0b2c16e0299fc5c6b94e4ca17)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
slirp/src/mbuf.c | 11 +++++++++++
slirp/src/mbuf.h | 1 +
2 files changed, 12 insertions(+)
diff --git a/slirp/src/mbuf.c b/slirp/src/mbuf.c
index 4fd62282a9..6d0653ed3d 100644
--- a/slirp/src/mbuf.c
+++ b/slirp/src/mbuf.c
@@ -222,3 +222,14 @@ struct mbuf *dtom(Slirp *slirp, void *dat)
return (struct mbuf *)0;
}
+
+void *mtod_check(struct mbuf *m, size_t len)
+{
+ if (m->m_len >= len) {
+ return m->m_data;
+ }
+
+ DEBUG_ERROR("mtod failed");
+
+ return NULL;
+}
diff --git a/slirp/src/mbuf.h b/slirp/src/mbuf.h
index 546e7852c5..2015e3232f 100644
--- a/slirp/src/mbuf.h
+++ b/slirp/src/mbuf.h
@@ -118,6 +118,7 @@ void m_inc(struct mbuf *, int);
void m_adj(struct mbuf *, int);
int m_copy(struct mbuf *, struct mbuf *, int, int);
struct mbuf *dtom(Slirp *, void *);
+void *mtod_check(struct mbuf *, size_t len);
static inline void ifs_init(struct mbuf *ifm)
{
--
2.27.0

242
SOURCES/kvm-Compress-lines-for-immediate-return.patch Normal file
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@ -0,0 +1,242 @@
From 5cf6dd33456c4e7e2a8849f458ce234fb5bb290c Mon Sep 17 00:00:00 2001
From: Kevin Wolf <kwolf@redhat.com>
Date: Fri, 25 Jun 2021 17:41:03 -0400
Subject: [PATCH 3/4] Compress lines for immediate return
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Kevin Wolf <kwolf@redhat.com>
Message-id: <20210625174104.44313-2-kwolf@redhat.com>
Patchwork-id: 101777
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 1/2] Compress lines for immediate return
Bugzilla: 1970912
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Thomas Huth <thuth@redhat.com>
From: Simran Singhal <singhalsimran0@gmail.com>
Compress two lines into a single line if immediate return statement is found.
It also remove variables progress, val, data, ret and sock
as they are no longer needed.
Remove space between function "mixer_load" and '(' to fix the
checkpatch.pl error:-
ERROR: space prohibited between function name and open parenthesis '('
Done using following coccinelle script:
@@
local idexpression ret;
expression e;
@@
-ret =
+return
e;
-return ret;
Signed-off-by: Simran Singhal <singhalsimran0@gmail.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20200401165314.GA3213@simran-Inspiron-5558>
[lv: in handle_aiocb_write_zeroes_unmap() move "int ret" inside the #ifdef]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
(cherry picked from commit b3ac2b94cdc939a90d5a22338ae507689e2cfab0)
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
block/file-posix.c | 8 +++-----
block/nfs.c | 3 +--
block/nvme.c | 4 +---
block/vhdx.c | 3 +--
hw/audio/ac97.c | 4 +---
hw/audio/adlib.c | 5 +----
hw/display/cirrus_vga.c | 4 +---
migration/ram.c | 4 +---
ui/gtk.c | 3 +--
util/qemu-sockets.c | 5 +----
10 files changed, 12 insertions(+), 31 deletions(-)
diff --git a/block/file-posix.c b/block/file-posix.c
index 371572f1b0..837edcf027 100644
--- a/block/file-posix.c
+++ b/block/file-posix.c
@@ -1626,13 +1626,12 @@ static int handle_aiocb_write_zeroes_unmap(void *opaque)
{
RawPosixAIOData *aiocb = opaque;
BDRVRawState *s G_GNUC_UNUSED = aiocb->bs->opaque;
- int ret;
/* First try to write zeros and unmap at the same time */
#ifdef CONFIG_FALLOCATE_PUNCH_HOLE
- ret = do_fallocate(s->fd, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
- aiocb->aio_offset, aiocb->aio_nbytes);
+ int ret = do_fallocate(s->fd, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
+ aiocb->aio_offset, aiocb->aio_nbytes);
if (ret != -ENOTSUP) {
return ret;
}
@@ -1640,8 +1639,7 @@ static int handle_aiocb_write_zeroes_unmap(void *opaque)
/* If we couldn't manage to unmap while guaranteed that the area reads as
* all-zero afterwards, just write zeroes without unmapping */
- ret = handle_aiocb_write_zeroes(aiocb);
- return ret;
+ return handle_aiocb_write_zeroes(aiocb);
}
#ifndef HAVE_COPY_FILE_RANGE
diff --git a/block/nfs.c b/block/nfs.c
index 2393fbfe6b..18c0a73694 100644
--- a/block/nfs.c
+++ b/block/nfs.c
@@ -623,8 +623,7 @@ static int nfs_file_open(BlockDriverState *bs, QDict *options, int flags,
}
bs->total_sectors = ret;
- ret = 0;
- return ret;
+ return 0;
}
static QemuOptsList nfs_create_opts = {
diff --git a/block/nvme.c b/block/nvme.c
index 7b7c0cc5d6..eb2f54dd9d 100644
--- a/block/nvme.c
+++ b/block/nvme.c
@@ -575,11 +575,9 @@ static bool nvme_poll_cb(void *opaque)
{
EventNotifier *e = opaque;
BDRVNVMeState *s = container_of(e, BDRVNVMeState, irq_notifier);
- bool progress = false;
trace_nvme_poll_cb(s);
- progress = nvme_poll_queues(s);
- return progress;
+ return nvme_poll_queues(s);
}
static int nvme_init(BlockDriverState *bs, const char *device, int namespace,
diff --git a/block/vhdx.c b/block/vhdx.c
index 21497f7318..a427e47f10 100644
--- a/block/vhdx.c
+++ b/block/vhdx.c
@@ -411,8 +411,7 @@ int vhdx_update_headers(BlockDriverState *bs, BDRVVHDXState *s,
if (ret < 0) {
return ret;
}
- ret = vhdx_update_header(bs, s, generate_data_write_guid, log_guid);
- return ret;
+ return vhdx_update_header(bs, s, generate_data_write_guid, log_guid);
}
/* opens the specified header block from the VHDX file header section */
diff --git a/hw/audio/ac97.c b/hw/audio/ac97.c
index a136b97f68..a2cfae52b3 100644
--- a/hw/audio/ac97.c
+++ b/hw/audio/ac97.c
@@ -574,11 +574,9 @@ static uint32_t nam_readb (void *opaque, uint32_t addr)
static uint32_t nam_readw (void *opaque, uint32_t addr)
{
AC97LinkState *s = opaque;
- uint32_t val = ~0U;
uint32_t index = addr;
s->cas = 0;
- val = mixer_load (s, index);
- return val;
+ return mixer_load(s, index);
}
static uint32_t nam_readl (void *opaque, uint32_t addr)
diff --git a/hw/audio/adlib.c b/hw/audio/adlib.c
index cb4178d861..5779d09815 100644
--- a/hw/audio/adlib.c
+++ b/hw/audio/adlib.c
@@ -120,13 +120,10 @@ static void adlib_write(void *opaque, uint32_t nport, uint32_t val)
static uint32_t adlib_read(void *opaque, uint32_t nport)
{
AdlibState *s = opaque;
- uint8_t data;
int a = nport & 3;
adlib_kill_timers (s);
- data = OPLRead (s->opl, a);
-
- return data;
+ return OPLRead (s->opl, a);
}
static void timer_handler (void *opaque, int c, double interval_Sec)
diff --git a/hw/display/cirrus_vga.c b/hw/display/cirrus_vga.c
index 93afa26fda..a52d3094b9 100644
--- a/hw/display/cirrus_vga.c
+++ b/hw/display/cirrus_vga.c
@@ -2411,12 +2411,10 @@ static uint64_t cirrus_linear_bitblt_read(void *opaque,
unsigned size)
{
CirrusVGAState *s = opaque;
- uint32_t ret;
/* XXX handle bitblt */
(void)s;
- ret = 0xff;
- return ret;
+ return 0xff;
}
static void cirrus_linear_bitblt_write(void *opaque,
diff --git a/migration/ram.c b/migration/ram.c
index 5344c7d59e..92c506d13c 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -3101,9 +3101,7 @@ int ram_postcopy_send_discard_bitmap(MigrationState *ms)
}
trace_ram_postcopy_send_discard_bitmap();
- ret = postcopy_each_ram_send_discard(ms);
-
- return ret;
+ return postcopy_each_ram_send_discard(ms);
}
/**
diff --git a/ui/gtk.c b/ui/gtk.c
index 692ccc7bbb..e032e3c36f 100644
--- a/ui/gtk.c
+++ b/ui/gtk.c
@@ -1649,8 +1649,7 @@ static GSList *gd_vc_menu_init(GtkDisplayState *s, VirtualConsole *vc,
G_CALLBACK(gd_menu_switch_vc), s);
gtk_menu_shell_append(GTK_MENU_SHELL(view_menu), vc->menu_item);
- group = gtk_radio_menu_item_get_group(GTK_RADIO_MENU_ITEM(vc->menu_item));
- return group;
+ return gtk_radio_menu_item_get_group(GTK_RADIO_MENU_ITEM(vc->menu_item));
}
#if defined(CONFIG_VTE)
diff --git a/util/qemu-sockets.c b/util/qemu-sockets.c
index bcc06d0e01..86c48b9fa5 100644
--- a/util/qemu-sockets.c
+++ b/util/qemu-sockets.c
@@ -765,15 +765,12 @@ static int vsock_connect_addr(const struct sockaddr_vm *svm, Error **errp)
static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp)
{
struct sockaddr_vm svm;
- int sock = -1;
if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) {
return -1;
}
- sock = vsock_connect_addr(&svm, errp);
-
- return sock;
+ return vsock_connect_addr(&svm, errp);
}
static int vsock_listen_saddr(VsockSocketAddress *vaddr,
--
2.27.0

59
SOURCES/kvm-Fix-DHCP-broken-in-libslirp-v4.6.0.patch Normal file
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@ -0,0 +1,59 @@
From d0c668aa0ad255c3598267816154874541ac2943 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
Date: Thu, 29 Jul 2021 04:56:42 -0400
Subject: [PATCH 12/14] Fix "DHCP broken in libslirp v4.6.0"
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: <20210708082537.1550263-9-marcandre.lureau@redhat.com>
Patchwork-id: 101824
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 8/8] Fix "DHCP broken in libslirp v4.6.0"
Bugzilla: 1970819 1970835 1970843 1970853
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Eric Blake <eblake@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
From: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
Fix issue 48
Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
(cherry picked from commit c9f314f6e315a5518432761fea864196a290f799)
[ minor conflict fix due to indentation change ]
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
slirp/src/bootp.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/slirp/src/bootp.c b/slirp/src/bootp.c
index 5789187166..3e4af075f1 100644
--- a/slirp/src/bootp.c
+++ b/slirp/src/bootp.c
@@ -354,14 +354,14 @@ static void bootp_reply(Slirp *slirp,
q += sizeof(nak_msg) - 1;
}
assert(q < end);
- *q =
-RFC1533_END
-;
+ *q = RFC1533_END;
-daddr.sin_addr.s_addr = 0xffffffffu;
+ daddr.sin_addr.s_addr = 0xffffffffu;
-m->m_len = sizeof(struct bootp_t) - sizeof(struct ip) - sizeof(struct udphdr);
-udp_output(NULL, m, &saddr, &daddr, IPTOS_LOWDELAY);
+ assert ((q - rbp->bp_vend + 1) <= DHCP_OPT_LEN);
+
+ m->m_len = sizeof(struct bootp_t) + (q - rbp->bp_vend + 1) - sizeof(struct ip) - sizeof(struct udphdr);
+ udp_output(NULL, m, &saddr, &daddr, IPTOS_LOWDELAY);
}
void bootp_input(struct mbuf *m)
--
2.27.0

82
SOURCES/kvm-acpi-accept-byte-and-word-access-to-core-ACPI-regist.patch Normal file
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@ -0,0 +1,82 @@
From dcac680adb6b8624f14eda3e812521bddbe8ecea Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Wed, 21 Apr 2021 22:30:04 -0400
Subject: [PATCH 5/7] acpi: accept byte and word access to core ACPI registers
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210421223006.19650-5-jmaloy@redhat.com>
Patchwork-id: 101482
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH v2 4/6] acpi: accept byte and word access to core ACPI registers
Bugzilla: 1842478
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
From: Michael Tokarev <mjt@tls.msk.ru>
All ISA registers should be accessible as bytes, words or dwords
(if wide enough). Fix the access constraints for acpi-pm-evt,
acpi-pm-tmr & acpi-cnt registers.
Fixes: 5d971f9e67 (memory: Revert "memory: accept mismatching sizes in memory_region_access_valid")
Fixes: afafe4bbe0 (apci: switch cnt to memory api)
Fixes: 77d58b1e47 (apci: switch timer to memory api)
Fixes: b5a7c024d2 (apci: switch evt to memory api)
Buglink: https://lore.kernel.org/xen-devel/20200630170913.123646-1-anthony.perard@citrix.com/T/
Buglink: https://bugs.debian.org/964793
BugLink: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=964247
BugLink: https://bugs.launchpad.net/bugs/1886318
Reported-By: Simon John <git@the-jedi.co.uk>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Message-Id: <20200720160627.15491-1-mjt@msgid.tls.msk.ru>
Cc: qemu-stable@nongnu.org
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit dba04c3488c4699f5afe96f66e448b1d447cf3fb)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/acpi/core.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/hw/acpi/core.c b/hw/acpi/core.c
index 45cbed49ab..d85052c34a 100644
--- a/hw/acpi/core.c
+++ b/hw/acpi/core.c
@@ -461,7 +461,8 @@ static void acpi_pm_evt_write(void *opaque, hwaddr addr, uint64_t val,
static const MemoryRegionOps acpi_pm_evt_ops = {
.read = acpi_pm_evt_read,
.write = acpi_pm_evt_write,
- .valid.min_access_size = 2,
+ .impl.min_access_size = 2,
+ .valid.min_access_size = 1,
.valid.max_access_size = 2,
.endianness = DEVICE_LITTLE_ENDIAN,
};
@@ -530,7 +531,8 @@ static void acpi_pm_tmr_write(void *opaque, hwaddr addr, uint64_t val,
static const MemoryRegionOps acpi_pm_tmr_ops = {
.read = acpi_pm_tmr_read,
.write = acpi_pm_tmr_write,
- .valid.min_access_size = 4,
+ .impl.min_access_size = 4,
+ .valid.min_access_size = 1,
.valid.max_access_size = 4,
.endianness = DEVICE_LITTLE_ENDIAN,
};
@@ -602,7 +604,8 @@ static void acpi_pm_cnt_write(void *opaque, hwaddr addr, uint64_t val,
static const MemoryRegionOps acpi_pm_cnt_ops = {
.read = acpi_pm_cnt_read,
.write = acpi_pm_cnt_write,
- .valid.min_access_size = 2,
+ .impl.min_access_size = 2,
+ .valid.min_access_size = 1,
.valid.max_access_size = 2,
.endianness = DEVICE_LITTLE_ENDIAN,
};
--
2.27.0

132
SOURCES/kvm-aio-wait-delegate-polling-of-main-AioContext-if-BQL-.patch Normal file
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@ -0,0 +1,132 @@
From b474155fdc38f86f516c14ba9a6f934616d589ef Mon Sep 17 00:00:00 2001
From: Andrew Jones <drjones@redhat.com>
Date: Wed, 4 Aug 2021 03:27:22 -0400
Subject: [PATCH 1/2] aio-wait: delegate polling of main AioContext if BQL not
held
RH-Author: Andrew Jones <drjones@redhat.com>
Message-id: <20210729134448.4995-2-drjones@redhat.com>
Patchwork-id: 101935
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH v2 1/2] aio-wait: delegate polling of main AioContext if BQL not held
Bugzilla: 1969848
RH-Acked-by: Gavin Shan <gshan@redhat.com>
RH-Acked-by: Auger Eric <eric.auger@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
From: Paolo Bonzini <pbonzini@redhat.com>
Any thread that is not a iothread returns NULL for qemu_get_current_aio_context().
As a result, it would also return true for
in_aio_context_home_thread(qemu_get_aio_context()), causing
AIO_WAIT_WHILE to invoke aio_poll() directly. This is incorrect
if the BQL is not held, because aio_poll() does not expect to
run concurrently from multiple threads, and it can actually
happen when savevm writes to the vmstate file from the
migration thread.
Therefore, restrict in_aio_context_home_thread to return true
for the main AioContext only if the BQL is held.
The function is moved to aio-wait.h because it is mostly used
there and to avoid a circular reference between main-loop.h
and block/aio.h.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200407140746.8041-5-pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
(cherry picked from commit 3c18a92dc4b55ca8cc37a755ed119f11c0f34099)
Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
include/block/aio-wait.h | 22 ++++++++++++++++++++++
include/block/aio.h | 29 ++++++++++-------------------
2 files changed, 32 insertions(+), 19 deletions(-)
diff --git a/include/block/aio-wait.h b/include/block/aio-wait.h
index afeeb18f95..716d2639df 100644
--- a/include/block/aio-wait.h
+++ b/include/block/aio-wait.h
@@ -26,6 +26,7 @@
#define QEMU_AIO_WAIT_H
#include "block/aio.h"
+#include "qemu/main-loop.h"
/**
* AioWait:
@@ -124,4 +125,25 @@ void aio_wait_kick(void);
*/
void aio_wait_bh_oneshot(AioContext *ctx, QEMUBHFunc *cb, void *opaque);
+/**
+ * in_aio_context_home_thread:
+ * @ctx: the aio context
+ *
+ * Return whether we are running in the thread that normally runs @ctx. Note
+ * that acquiring/releasing ctx does not affect the outcome, each AioContext
+ * still only has one home thread that is responsible for running it.
+ */
+static inline bool in_aio_context_home_thread(AioContext *ctx)
+{
+ if (ctx == qemu_get_current_aio_context()) {
+ return true;
+ }
+
+ if (ctx == qemu_get_aio_context()) {
+ return qemu_mutex_iothread_locked();
+ } else {
+ return false;
+ }
+}
+
#endif /* QEMU_AIO_WAIT_H */
diff --git a/include/block/aio.h b/include/block/aio.h
index 6b0d52f732..9d28e247df 100644
--- a/include/block/aio.h
+++ b/include/block/aio.h
@@ -60,12 +60,16 @@ struct AioContext {
QLIST_HEAD(, AioHandler) aio_handlers;
/* Used to avoid unnecessary event_notifier_set calls in aio_notify;
- * accessed with atomic primitives. If this field is 0, everything
- * (file descriptors, bottom halves, timers) will be re-evaluated
- * before the next blocking poll(), thus the event_notifier_set call
- * can be skipped. If it is non-zero, you may need to wake up a
- * concurrent aio_poll or the glib main event loop, making
- * event_notifier_set necessary.
+ * only written from the AioContext home thread, or under the BQL in
+ * the case of the main AioContext. However, it is read from any
+ * thread so it is still accessed with atomic primitives.
+ *
+ * If this field is 0, everything (file descriptors, bottom halves,
+ * timers) will be re-evaluated before the next blocking poll() or
+ * io_uring wait; therefore, the event_notifier_set call can be
+ * skipped. If it is non-zero, you may need to wake up a concurrent
+ * aio_poll or the glib main event loop, making event_notifier_set
+ * necessary.
*
* Bit 0 is reserved for GSource usage of the AioContext, and is 1
* between a call to aio_ctx_prepare and the next call to aio_ctx_check.
@@ -580,19 +584,6 @@ void aio_co_enter(AioContext *ctx, struct Coroutine *co);
*/
AioContext *qemu_get_current_aio_context(void);
-/**
- * in_aio_context_home_thread:
- * @ctx: the aio context
- *
- * Return whether we are running in the thread that normally runs @ctx. Note
- * that acquiring/releasing ctx does not affect the outcome, each AioContext
- * still only has one home thread that is responsible for running it.
- */
-static inline bool in_aio_context_home_thread(AioContext *ctx)
-{
- return ctx == qemu_get_current_aio_context();
-}
-
/**
* aio_context_setup:
* @ctx: the aio context
--
2.27.0

183
SOURCES/kvm-async-use-explicit-memory-barriers.patch Normal file
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@ -0,0 +1,183 @@
From 82a02aec3a8b3c2ac925d0b71ea4c35aa5d6463b Mon Sep 17 00:00:00 2001
From: Andrew Jones <drjones@redhat.com>
Date: Wed, 4 Aug 2021 03:27:24 -0400
Subject: [PATCH 2/2] async: use explicit memory barriers
RH-Author: Andrew Jones <drjones@redhat.com>
Message-id: <20210729134448.4995-3-drjones@redhat.com>
Patchwork-id: 101937
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH v2 2/2] async: use explicit memory barriers
Bugzilla: 1969848
RH-Acked-by: Gavin Shan <gshan@redhat.com>
RH-Acked-by: Auger Eric <eric.auger@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
From: Paolo Bonzini <pbonzini@redhat.com>
When using C11 atomics, non-seqcst reads and writes do not participate
in the total order of seqcst operations. In util/async.c and util/aio-posix.c,
in particular, the pattern that we use
write ctx->notify_me write bh->scheduled
read bh->scheduled read ctx->notify_me
if !bh->scheduled, sleep if ctx->notify_me, notify
needs to use seqcst operations for both the write and the read. In
general this is something that we do not want, because there can be
many sources that are polled in addition to bottom halves. The
alternative is to place a seqcst memory barrier between the write
and the read. This also comes with a disadvantage, in that the
memory barrier is implicit on strongly-ordered architectures and
it wastes a few dozen clock cycles.
Fortunately, ctx->notify_me is never written concurrently by two
threads, so we can assert that and relax the writes to ctx->notify_me.
The resulting solution works and performs well on both aarch64 and x86.
Note that the atomic_set/atomic_read combination is not an atomic
read-modify-write, and therefore it is even weaker than C11 ATOMIC_RELAXED;
on x86, ATOMIC_RELAXED compiles to a locked operation.
Analyzed-by: Ying Fang <fangying1@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Tested-by: Ying Fang <fangying1@huawei.com>
Message-Id: <20200407140746.8041-6-pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
(cherry picked from commit 5710a3e09f9b85801e5ce70797a4a511e5fc9e2c)
Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
util/aio-posix.c | 16 ++++++++++++++--
util/aio-win32.c | 17 ++++++++++++++---
util/async.c | 16 ++++++++++++----
3 files changed, 40 insertions(+), 9 deletions(-)
diff --git a/util/aio-posix.c b/util/aio-posix.c
index abc396d030..8cfb25650d 100644
--- a/util/aio-posix.c
+++ b/util/aio-posix.c
@@ -624,6 +624,11 @@ bool aio_poll(AioContext *ctx, bool blocking)
int64_t timeout;
int64_t start = 0;
+ /*
+ * There cannot be two concurrent aio_poll calls for the same AioContext (or
+ * an aio_poll concurrent with a GSource prepare/check/dispatch callback).
+ * We rely on this below to avoid slow locked accesses to ctx->notify_me.
+ */
assert(in_aio_context_home_thread(ctx));
/* aio_notify can avoid the expensive event_notifier_set if
@@ -634,7 +639,13 @@ bool aio_poll(AioContext *ctx, bool blocking)
* so disable the optimization now.
*/
if (blocking) {
- atomic_add(&ctx->notify_me, 2);
+ atomic_set(&ctx->notify_me, atomic_read(&ctx->notify_me) + 2);
+ /*
+ * Write ctx->notify_me before computing the timeout
+ * (reading bottom half flags, etc.). Pairs with
+ * smp_mb in aio_notify().
+ */
+ smp_mb();
}
qemu_lockcnt_inc(&ctx->list_lock);
@@ -679,7 +690,8 @@ bool aio_poll(AioContext *ctx, bool blocking)
}
if (blocking) {
- atomic_sub(&ctx->notify_me, 2);
+ /* Finish the poll before clearing the flag. */
+ atomic_store_release(&ctx->notify_me, atomic_read(&ctx->notify_me) - 2);
aio_notify_accept(ctx);
}
diff --git a/util/aio-win32.c b/util/aio-win32.c
index a23b9c364d..729d533faf 100644
--- a/util/aio-win32.c
+++ b/util/aio-win32.c
@@ -321,6 +321,12 @@ bool aio_poll(AioContext *ctx, bool blocking)
int count;
int timeout;
+ /*
+ * There cannot be two concurrent aio_poll calls for the same AioContext (or
+ * an aio_poll concurrent with a GSource prepare/check/dispatch callback).
+ * We rely on this below to avoid slow locked accesses to ctx->notify_me.
+ */
+ assert(in_aio_context_home_thread(ctx));
progress = false;
/* aio_notify can avoid the expensive event_notifier_set if
@@ -331,7 +337,13 @@ bool aio_poll(AioContext *ctx, bool blocking)
* so disable the optimization now.
*/
if (blocking) {
- atomic_add(&ctx->notify_me, 2);
+ atomic_set(&ctx->notify_me, atomic_read(&ctx->notify_me) + 2);
+ /*
+ * Write ctx->notify_me before computing the timeout
+ * (reading bottom half flags, etc.). Pairs with
+ * smp_mb in aio_notify().
+ */
+ smp_mb();
}
qemu_lockcnt_inc(&ctx->list_lock);
@@ -364,8 +376,7 @@ bool aio_poll(AioContext *ctx, bool blocking)
ret = WaitForMultipleObjects(count, events, FALSE, timeout);
if (blocking) {
assert(first);
- assert(in_aio_context_home_thread(ctx));
- atomic_sub(&ctx->notify_me, 2);
+ atomic_store_release(&ctx->notify_me, atomic_read(&ctx->notify_me) - 2);
aio_notify_accept(ctx);
}
diff --git a/util/async.c b/util/async.c
index b1fa5319e5..c65c58bbc9 100644
--- a/util/async.c
+++ b/util/async.c
@@ -220,7 +220,14 @@ aio_ctx_prepare(GSource *source, gint *timeout)
{
AioContext *ctx = (AioContext *) source;
- atomic_or(&ctx->notify_me, 1);
+ atomic_set(&ctx->notify_me, atomic_read(&ctx->notify_me) | 1);
+
+ /*
+ * Write ctx->notify_me before computing the timeout
+ * (reading bottom half flags, etc.). Pairs with
+ * smp_mb in aio_notify().
+ */
+ smp_mb();
/* We assume there is no timeout already supplied */
*timeout = qemu_timeout_ns_to_ms(aio_compute_timeout(ctx));
@@ -238,7 +245,8 @@ aio_ctx_check(GSource *source)
AioContext *ctx = (AioContext *) source;
QEMUBH *bh;
- atomic_and(&ctx->notify_me, ~1);
+ /* Finish computing the timeout before clearing the flag. */
+ atomic_store_release(&ctx->notify_me, atomic_read(&ctx->notify_me) & ~1);
aio_notify_accept(ctx);
for (bh = ctx->first_bh; bh; bh = bh->next) {
@@ -343,10 +351,10 @@ LinuxAioState *aio_get_linux_aio(AioContext *ctx)
void aio_notify(AioContext *ctx)
{
/* Write e.g. bh->scheduled before reading ctx->notify_me. Pairs
- * with atomic_or in aio_ctx_prepare or atomic_add in aio_poll.
+ * with smp_mb in aio_ctx_prepare or aio_poll.
*/
smp_mb();
- if (ctx->notify_me) {
+ if (atomic_read(&ctx->notify_me)) {
event_notifier_set(&ctx->notifier);
atomic_mb_set(&ctx->notified, true);
}
--
2.27.0

53
SOURCES/kvm-audio-audio_generic_get_buffer_in-should-honor-size.patch Normal file
View File

@ -0,0 +1,53 @@
From 96c8fcafa7325cd0e8a23a743a55f0ad0aa9f79b Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <kraxel@redhat.com>
Date: Thu, 18 Mar 2021 09:13:42 -0400
Subject: [PATCH 5/5] audio: audio_generic_get_buffer_in should honor *size
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Gerd Hoffmann <kraxel@redhat.com>
Message-id: <20210318091342.3232471-2-kraxel@redhat.com>
Patchwork-id: 101352
O-Subject: [RHEL-8.4.0 qemu-kvm PATCH 1/1] audio: audio_generic_get_buffer_in should honor *size
Bugzilla: 1932823
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Danilo de Paula <ddepaula@redhat.com>
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
From: Volker Rümelin <vr_qemu@t-online.de>
The function generic_get_buffer_in currently ignores the *size
parameter and may return a buffer larger than *size.
As a result the variable samples in function
audio_pcm_hw_run_in may underflow. The while loop then most
likely will never termiate.
Buglink: http://bugs.debian.org/948658
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-Id: <20200123074943.6699-9-vr_qemu@t-online.de>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
(cherry picked from commit 599eac4e5a41e828645594097daee39373acc3c0)
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
audio/audio.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/audio/audio.c b/audio/audio.c
index 56fae55047..39a62fc62a 100644
--- a/audio/audio.c
+++ b/audio/audio.c
@@ -1402,7 +1402,8 @@ void *audio_generic_get_buffer_in(HWVoiceIn *hw, size_t *size)
}
assert(start >= 0 && start < hw->size_emul);
- *size = MIN(hw->pending_emul, hw->size_emul - start);
+ *size = MIN(*size, hw->pending_emul);
+ *size = MIN(*size, hw->size_emul - start);
return hw->buf_emul + start;
}
--
2.27.0

76
SOURCES/kvm-block-file-posix-Fix-problem-with-fallocate-PUNCH_HO.patch Normal file
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@ -0,0 +1,76 @@
From 8c339c3535728179acc94deb5b922aebcfac9ab6 Mon Sep 17 00:00:00 2001
From: Thomas Huth <thuth@redhat.com>
Date: Thu, 3 Jun 2021 16:13:34 -0400
Subject: [PATCH 2/4] block/file-posix: Fix problem with fallocate(PUNCH_HOLE)
on GPFS
RH-Author: Thomas Huth <thuth@redhat.com>
Message-id: <20210603161334.607005-2-thuth@redhat.com>
Patchwork-id: 101673
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 1/1] block/file-posix: Fix problem with fallocate(PUNCH_HOLE) on GPFS
Bugzilla: 1944861
RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
RH-Acked-by: Max Reitz <mreitz@redhat.com>
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
A customer reported that running
qemu-img convert -t none -O qcow2 -f qcow2 input.qcow2 output.qcow2
fails for them with the following error message when the images are
stored on a GPFS file system :
qemu-img: error while writing sector 0: Invalid argument
After analyzing the strace output, it seems like the problem is in
handle_aiocb_write_zeroes(): The call to fallocate(FALLOC_FL_PUNCH_HOLE)
returns EINVAL, which can apparently happen if the file system has
a different idea of the granularity of the operation. It's arguably
a bug in GPFS, since the PUNCH_HOLE mode should not result in EINVAL
according to the man-page of fallocate(), but the file system is out
there in production and so we have to deal with it. In commit 294682cc3a
("block: workaround for unaligned byte range in fallocate()") we also
already applied the a work-around for the same problem to the earlier
fallocate(FALLOC_FL_ZERO_RANGE) call, so do it now similar with the
PUNCH_HOLE call. But instead of silently catching and returning
-ENOTSUP (which causes the caller to fall back to writing zeroes),
let's rather inform the user once about the buggy file system and
try the other fallback instead.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210527172020.847617-2-thuth@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 73ebf29729d1a40feaa9f8ab8951b6ee6dbfbede)
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1944861
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
block/file-posix.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/block/file-posix.c b/block/file-posix.c
index 62a463229f..371572f1b0 100644
--- a/block/file-posix.c
+++ b/block/file-posix.c
@@ -1587,6 +1587,17 @@ static int handle_aiocb_write_zeroes(void *opaque)
return ret;
}
s->has_fallocate = false;
+ } else if (ret == -EINVAL) {
+ /*
+ * Some file systems like older versions of GPFS do not like un-
+ * aligned byte ranges, and return EINVAL in such a case, though
+ * they should not do it according to the man-page of fallocate().
+ * Warn about the bad filesystem and try the final fallback instead.
+ */
+ warn_report_once("Your file system is misbehaving: "
+ "fallocate(FALLOC_FL_PUNCH_HOLE) returned EINVAL. "
+ "Please report this bug to your file sytem "
+ "vendor.");
} else if (ret != -ENOTSUP) {
return ret;
} else {
--
2.27.0

52
SOURCES/kvm-bootp-check-bootp_input-buffer-size.patch Normal file
View File

@ -0,0 +1,52 @@
From a66ab346bf74ebf3ed8fca0dc2e2febfe70069e8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
Date: Thu, 29 Jul 2021 04:56:28 -0400
Subject: [PATCH 07/14] bootp: check bootp_input buffer size
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: <20210708082537.1550263-4-marcandre.lureau@redhat.com>
Patchwork-id: 101820
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 3/8] bootp: check bootp_input buffer size
Bugzilla: 1970819
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Eric Blake <eblake@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
From: Marc-André Lureau <marcandre.lureau@redhat.com>
Fixes: CVE-2021-3592
Fixes: https://gitlab.freedesktop.org/slirp/libslirp/-/issues/44
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1970819
(cherry picked from commit 2eca0838eee1da96204545e22cdaed860d9d7c6c)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
slirp/src/bootp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/slirp/src/bootp.c b/slirp/src/bootp.c
index 5754327138..5789187166 100644
--- a/slirp/src/bootp.c
+++ b/slirp/src/bootp.c
@@ -366,9 +366,9 @@ udp_output(NULL, m, &saddr, &daddr, IPTOS_LOWDELAY);
void bootp_input(struct mbuf *m)
{
- struct bootp_t *bp = mtod(m, struct bootp_t *);
+ struct bootp_t *bp = mtod_check(m, sizeof(struct bootp_t));
- if (bp->bp_op == BOOTP_REQUEST) {
+ if (bp && bp->bp_op == BOOTP_REQUEST) {
bootp_reply(m->slirp, bp, m_end(m));
}
}
--
2.27.0

175
SOURCES/kvm-bootp-limit-vendor-specific-area-to-input-packet-mem.patch Normal file
View File

@ -0,0 +1,175 @@
From 8198ae7c21a4d37f7e365058f973867c41d44d21 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
Date: Thu, 29 Jul 2021 04:56:25 -0400
Subject: [PATCH 06/14] bootp: limit vendor-specific area to input packet
memory buffer
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: <20210708082537.1550263-3-marcandre.lureau@redhat.com>
Patchwork-id: 101821
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 2/8] bootp: limit vendor-specific area to input packet memory buffer
Bugzilla: 1970819 1970835 1970843 1970853
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Eric Blake <eblake@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
From: Marc-André Lureau <marcandre.lureau@redhat.com>
sizeof(bootp_t) currently holds DHCP_OPT_LEN. Remove this optional field
from the structure, to help with the following patch checking for
minimal header size. Modify the bootp_reply() function to take the
buffer boundaries and avoiding potential buffer overflow.
Related to CVE-2021-3592.
https://gitlab.freedesktop.org/slirp/libslirp/-/issues/44
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
(cherry picked from commit f13cad45b25d92760bb0ad67bec0300a4d7d5275)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
slirp/src/bootp.c | 26 +++++++++++++++-----------
slirp/src/bootp.h | 2 +-
slirp/src/mbuf.c | 5 +++++
slirp/src/mbuf.h | 1 +
4 files changed, 22 insertions(+), 12 deletions(-)
diff --git a/slirp/src/bootp.c b/slirp/src/bootp.c
index 3f9ce2553e..5754327138 100644
--- a/slirp/src/bootp.c
+++ b/slirp/src/bootp.c
@@ -92,21 +92,22 @@ found:
return bc;
}
-static void dhcp_decode(const struct bootp_t *bp, int *pmsg_type,
+static void dhcp_decode(const struct bootp_t *bp,
+ const uint8_t *bp_end,
+ int *pmsg_type,
struct in_addr *preq_addr)
{
- const uint8_t *p, *p_end;
+ const uint8_t *p;
int len, tag;
*pmsg_type = 0;
preq_addr->s_addr = htonl(0L);
p = bp->bp_vend;
- p_end = p + DHCP_OPT_LEN;
if (memcmp(p, rfc1533_cookie, 4) != 0)
return;
p += 4;
- while (p < p_end) {
+ while (p < bp_end) {
tag = p[0];
if (tag == RFC1533_PAD) {
p++;
@@ -114,10 +115,10 @@ static void dhcp_decode(const struct bootp_t *bp, int *pmsg_type,
break;
} else {
p++;
- if (p >= p_end)
+ if (p >= bp_end)
break;
len = *p++;
- if (p + len > p_end) {
+ if (p + len > bp_end) {
break;
}
DPRINTF("dhcp: tag=%d len=%d\n", tag, len);
@@ -144,7 +145,9 @@ static void dhcp_decode(const struct bootp_t *bp, int *pmsg_type,
}
}
-static void bootp_reply(Slirp *slirp, const struct bootp_t *bp)
+static void bootp_reply(Slirp *slirp,
+ const struct bootp_t *bp,
+ const uint8_t *bp_end)
{
BOOTPClient *bc = NULL;
struct mbuf *m;
@@ -157,7 +160,7 @@ static void bootp_reply(Slirp *slirp, const struct bootp_t *bp)
uint8_t client_ethaddr[ETH_ALEN];
/* extract exact DHCP msg type */
- dhcp_decode(bp, &dhcp_msg_type, &preq_addr);
+ dhcp_decode(bp, bp_end, &dhcp_msg_type, &preq_addr);
DPRINTF("bootp packet op=%d msgtype=%d", bp->bp_op, dhcp_msg_type);
if (preq_addr.s_addr != htonl(0L))
DPRINTF(" req_addr=%08" PRIx32 "\n", ntohl(preq_addr.s_addr));
@@ -179,9 +182,10 @@ static void bootp_reply(Slirp *slirp, const struct bootp_t *bp)
return;
}
m->m_data += IF_MAXLINKHDR;
+ m_inc(m, sizeof(struct bootp_t) + DHCP_OPT_LEN);
rbp = (struct bootp_t *)m->m_data;
m->m_data += sizeof(struct udpiphdr);
- memset(rbp, 0, sizeof(struct bootp_t));
+ memset(rbp, 0, sizeof(struct bootp_t) + DHCP_OPT_LEN);
if (dhcp_msg_type == DHCPDISCOVER) {
if (preq_addr.s_addr != htonl(0L)) {
@@ -235,7 +239,7 @@ static void bootp_reply(Slirp *slirp, const struct bootp_t *bp)
rbp->bp_siaddr = saddr.sin_addr; /* Server IP address */
q = rbp->bp_vend;
- end = (uint8_t *)&rbp[1];
+ end = rbp->bp_vend + DHCP_OPT_LEN;
memcpy(q, rfc1533_cookie, 4);
q += 4;
@@ -365,6 +369,6 @@ void bootp_input(struct mbuf *m)
struct bootp_t *bp = mtod(m, struct bootp_t *);
if (bp->bp_op == BOOTP_REQUEST) {
- bootp_reply(m->slirp, bp);
+ bootp_reply(m->slirp, bp, m_end(m));
}
}
diff --git a/slirp/src/bootp.h b/slirp/src/bootp.h
index 03ece9bf28..0d20a944a8 100644
--- a/slirp/src/bootp.h
+++ b/slirp/src/bootp.h
@@ -114,7 +114,7 @@ struct bootp_t {
uint8_t bp_hwaddr[16];
uint8_t bp_sname[64];
uint8_t bp_file[128];
- uint8_t bp_vend[DHCP_OPT_LEN];
+ uint8_t bp_vend[];
};
typedef struct {
diff --git a/slirp/src/mbuf.c b/slirp/src/mbuf.c
index 6d0653ed3d..7db07c088e 100644
--- a/slirp/src/mbuf.c
+++ b/slirp/src/mbuf.c
@@ -233,3 +233,8 @@ void *mtod_check(struct mbuf *m, size_t len)
return NULL;
}
+
+void *m_end(struct mbuf *m)
+{
+ return m->m_data + m->m_len;
+}
diff --git a/slirp/src/mbuf.h b/slirp/src/mbuf.h
index 2015e3232f..a9752a36e0 100644
--- a/slirp/src/mbuf.h
+++ b/slirp/src/mbuf.h
@@ -119,6 +119,7 @@ void m_adj(struct mbuf *, int);
int m_copy(struct mbuf *, struct mbuf *, int, int);
struct mbuf *dtom(Slirp *, void *);
void *mtod_check(struct mbuf *, size_t len);
+void *m_end(struct mbuf *);
static inline void ifs_init(struct mbuf *ifm)
{
--
2.27.0

60
SOURCES/kvm-cadence_gem-switch-to-use-qemu_receive_packet-for-lo.patch Normal file
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@ -0,0 +1,60 @@
From 6f1ebcfdb92d12ef2caae0b63a3a380265cba1fa Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Tue, 29 Jun 2021 03:42:46 -0400
Subject: [PATCH 8/9] cadence_gem: switch to use qemu_receive_packet() for
loopback
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210629034247.3286477-9-jmaloy@redhat.com>
Patchwork-id: 101793
O-Subject: [RHEL-8.4.0.z qemu-kvm PATCH v2 8/9] cadence_gem: switch to use qemu_receive_packet() for loopback
Bugzilla: 1932917
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Thomas Huth <thuth@redhat.com>
From: Alexander Bulekov <alxndr@bu.edu>
This patch switches to use qemu_receive_packet() which can detect
reentrancy and return early.
This is intended to address CVE-2021-3416.
Cc: Prasad J Pandit <ppandit@redhat.com>
Cc: qemu-stable@nongnu.org
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit e73adfbeec9d4e008630c814759052ed945c3fed)
Conflict: upstream commit 24d62fd5028e ("net: cadence_gem: Move tx/rx
packet buffert to CadenceGEMState") is missing in this version, so
we stick to using the original stack variable tx_packet in the calls.
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/net/cadence_gem.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/hw/net/cadence_gem.c b/hw/net/cadence_gem.c
index b8be73dc55..be7c91123b 100644
--- a/hw/net/cadence_gem.c
+++ b/hw/net/cadence_gem.c
@@ -1225,8 +1225,8 @@ static void gem_transmit(CadenceGEMState *s)
/* Send the packet somewhere */
if (s->phy_loop || (s->regs[GEM_NWCTRL] &
GEM_NWCTRL_LOCALLOOP)) {
- gem_receive(qemu_get_queue(s->nic), tx_packet,
- total_bytes);
+ qemu_receive_packet(qemu_get_queue(s->nic), tx_packet,
+ total_bytes);
} else {
qemu_send_packet(qemu_get_queue(s->nic), tx_packet,
total_bytes);
--
2.27.0

53
SOURCES/kvm-dp8393x-switch-to-use-qemu_receive_packet-for-loopba.patch Normal file
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@ -0,0 +1,53 @@
From a6f0bef82cdd84844a06dac1e6d279d95824d827 Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Tue, 29 Jun 2021 03:42:41 -0400
Subject: [PATCH 3/9] dp8393x: switch to use qemu_receive_packet() for loopback
packet
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210629034247.3286477-4-jmaloy@redhat.com>
Patchwork-id: 101789
O-Subject: [RHEL-8.4.0.z qemu-kvm PATCH v2 3/9] dp8393x: switch to use qemu_receive_packet() for loopback packet
Bugzilla: 1932917
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Thomas Huth <thuth@redhat.com>
From: Jason Wang <jasowang@redhat.com>
This patch switches to use qemu_receive_packet() which can detect
reentrancy and return early.
This is intended to address CVE-2021-3416.
Cc: Prasad J Pandit <ppandit@redhat.com>
Cc: qemu-stable@nongnu.org
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com
Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit 331d2ac9ea307c990dc86e6493e8f0c48d14bb33)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/net/dp8393x.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/net/dp8393x.c b/hw/net/dp8393x.c
index 3d991af163..6d55b5de64 100644
--- a/hw/net/dp8393x.c
+++ b/hw/net/dp8393x.c
@@ -482,7 +482,7 @@ static void dp8393x_do_transmit_packets(dp8393xState *s)
s->regs[SONIC_TCR] |= SONIC_TCR_CRSL;
if (nc->info->can_receive(nc)) {
s->loopback_packet = 1;
- nc->info->receive(nc, s->tx_buffer, tx_len);
+ qemu_receive_packet(nc, s->tx_buffer, tx_len);
}
} else {
/* Transmit packet */
--
2.27.0

65
SOURCES/kvm-e1000-fail-early-for-evil-descriptor.patch Normal file
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@ -0,0 +1,65 @@
From 7bd3000cf22a91e6bc6afc1e7adbf0ae1b731104 Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Tue, 13 Apr 2021 22:45:17 -0400
Subject: [PATCH 2/5] e1000: fail early for evil descriptor
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210413224517.3841507-2-jmaloy@redhat.com>
Patchwork-id: 101473
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 1/1] e1000: fail early for evil descriptor
Bugzilla: 1930092
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
From: Jason Wang <jasowang@redhat.com>
During procss_tx_desc(), driver can try to chain data descriptor with
legacy descriptor, when will lead underflow for the following
calculation in process_tx_desc() for bytes:
if (tp->size + bytes > msh)
bytes = msh - tp->size;
This will lead a infinite loop. So check and fail early if tp->size if
greater or equal to msh.
Reported-by: Alexander Bulekov <alxndr@bu.edu>
Reported-by: Cheolwoo Myung <cwmyung@snu.ac.kr>
Reported-by: Ruhr-University Bochum <bugs-syssec@rub.de>
Cc: Prasad J Pandit <ppandit@redhat.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit 3de46e6fc489c52c9431a8a832ad8170a7569bd8)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/net/e1000.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/hw/net/e1000.c b/hw/net/e1000.c
index fc73fdd6fa..fe56bccd52 100644
--- a/hw/net/e1000.c
+++ b/hw/net/e1000.c
@@ -671,6 +671,9 @@ process_tx_desc(E1000State *s, struct e1000_tx_desc *dp)
msh = tp->tso_props.hdr_len + tp->tso_props.mss;
do {
bytes = split_size;
+ if (tp->size >= msh) {
+ goto eop;
+ }
if (tp->size + bytes > msh)
bytes = msh - tp->size;
@@ -696,6 +699,7 @@ process_tx_desc(E1000State *s, struct e1000_tx_desc *dp)
tp->size += split_size;
}
+eop:
if (!(txd_lower & E1000_TXD_CMD_EOP))
return;
if (!(tp->cptse && tp->size < tp->tso_props.hdr_len)) {
--
2.27.0

52
SOURCES/kvm-e1000-switch-to-use-qemu_receive_packet-for-loopback.patch Normal file
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@ -0,0 +1,52 @@
From 128b97f6049144af3c1a41ceb8e8583419edcd69 Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Tue, 29 Jun 2021 03:42:40 -0400
Subject: [PATCH 2/9] e1000: switch to use qemu_receive_packet() for loopback
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210629034247.3286477-3-jmaloy@redhat.com>
Patchwork-id: 101784
O-Subject: [RHEL-8.4.0.z qemu-kvm PATCH v2 2/9] e1000: switch to use qemu_receive_packet() for loopback
Bugzilla: 1932917
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Thomas Huth <thuth@redhat.com>
From: Jason Wang <jasowang@redhat.com>
This patch switches to use qemu_receive_packet() which can detect
reentrancy and return early.
This is intended to address CVE-2021-3416.
Cc: Prasad J Pandit <ppandit@redhat.com>
Cc: qemu-stable@nongnu.org
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit 1caff0340f49c93d535c6558a5138d20d475315c)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/net/e1000.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/net/e1000.c b/hw/net/e1000.c
index fe56bccd52..8680b7d46b 100644
--- a/hw/net/e1000.c
+++ b/hw/net/e1000.c
@@ -547,7 +547,7 @@ e1000_send_packet(E1000State *s, const uint8_t *buf, int size)
NetClientState *nc = qemu_get_queue(s->nic);
if (s->phy_reg[PHY_CTRL] & MII_CR_LOOPBACK) {
- nc->info->receive(nc, buf, size);
+ qemu_receive_packet(nc, buf, size);
} else {
qemu_send_packet(nc, buf, size);
}
--
2.27.0

59
SOURCES/kvm-file-posix-Handle-EINVAL-fallocate-return-value.patch Normal file
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@ -0,0 +1,59 @@
From 94d99b13b48e922861570f043490efc966b3b445 Mon Sep 17 00:00:00 2001
From: Kevin Wolf <kwolf@redhat.com>
Date: Fri, 25 Jun 2021 17:41:04 -0400
Subject: [PATCH 4/4] file-posix: Handle `EINVAL` fallocate return value
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Kevin Wolf <kwolf@redhat.com>
Message-id: <20210625174104.44313-3-kwolf@redhat.com>
Patchwork-id: 101778
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 2/2] file-posix: Handle `EINVAL` fallocate return value
Bugzilla: 1970912
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Thomas Huth <thuth@redhat.com>
From: Antoine Damhet <antoine.damhet@blade-group.com>
The `detect-zeroes=unmap` option may issue unaligned
`FALLOC_FL_PUNCH_HOLE` requests, raw block devices can (and will) return
`EINVAL`, qemu should then write the zeroes to the blockdev instead of
issuing an `IO_ERROR`.
The problem can be reprodced like this:
$ qemu-io -c 'write -P 0 42 1234' --image-opts driver=host_device,filename=/dev/loop0,detect-zeroes=unmap
write failed: Invalid argument
Signed-off-by: Antoine Damhet <antoine.damhet@blade-group.com>
Message-Id: <20200717135603.51180-1-antoine.damhet@blade-group.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit bae127d4dcf6158c5042e2eee9582430839a9967)
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
block/file-posix.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/block/file-posix.c b/block/file-posix.c
index 837edcf027..6cd19e6c9a 100644
--- a/block/file-posix.c
+++ b/block/file-posix.c
@@ -1632,7 +1632,11 @@ static int handle_aiocb_write_zeroes_unmap(void *opaque)
#ifdef CONFIG_FALLOCATE_PUNCH_HOLE
int ret = do_fallocate(s->fd, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
aiocb->aio_offset, aiocb->aio_nbytes);
- if (ret != -ENOTSUP) {
+ switch (ret) {
+ case -ENOTSUP:
+ case -EINVAL:
+ break;
+ default:
return ret;
}
#endif
--
2.27.0

466
SOURCES/kvm-file-posix-Mitigate-file-fragmentation-with-extent-s.patch Normal file
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@ -0,0 +1,466 @@
From 7ee01b5ccb7fc660dafaf3fdb1578649d17fbddf Mon Sep 17 00:00:00 2001
From: Kevin Wolf <kwolf@redhat.com>
Date: Wed, 26 May 2021 09:05:52 -0400
Subject: [PATCH 1/4] file-posix: Mitigate file fragmentation with extent size
hints
RH-Author: Kevin Wolf <kwolf@redhat.com>
Message-id: <20210526090552.155820-2-kwolf@redhat.com>
Patchwork-id: 101638
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 1/1] file-posix: Mitigate file fragmentation with extent size hints
Bugzilla: 1877163
RH-Acked-by: Sergio Lopez Pascual <slp@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Max Reitz <mreitz@redhat.com>
Especially when O_DIRECT is used with image files so that the page cache
indirection can't cause a merge of allocating requests, the file will
fragment on the file system layer, with a potentially very small
fragment size (this depends on the requests the guest sent).
On Linux, fragmentation can be reduced by setting an extent size hint
when creating the file (at least on XFS, it can't be set any more after
the first extent has been allocated), basically giving raw files a
"cluster size" for allocation.
This adds a create option to set the extent size hint, and changes the
default from not setting a hint to setting it to 1 MB. The main reason
why qcow2 defaults to smaller cluster sizes is that COW becomes more
expensive, which is not an issue with raw files, so we can choose a
larger size. The tradeoff here is only potentially wasted disk space.
For qcow2 (or other image formats) over file-posix, the advantage should
even be greater because they grow sequentially without leaving holes, so
there won't be wasted space. Setting even larger extent size hints for
such images may make sense. This can be done with the new option, but
let's keep the default conservative for now.
The effect is very visible with a test that intentionally creates a
badly fragmented file with qemu-img bench (the time difference while
creating the file is already remarkable) and then looks at the number of
extents and the time a simple "qemu-img map" takes.
Without an extent size hint:
$ ./qemu-img create -f raw -o extent_size_hint=0 ~/tmp/test.raw 10G
Formatting '/home/kwolf/tmp/test.raw', fmt=raw size=10737418240 extent_size_hint=0
$ ./qemu-img bench -f raw -t none -n -w ~/tmp/test.raw -c 1000000 -S 8192 -o 0
Sending 1000000 write requests, 4096 bytes each, 64 in parallel (starting at offset 0, step size 8192)
Run completed in 25.848 seconds.
$ ./qemu-img bench -f raw -t none -n -w ~/tmp/test.raw -c 1000000 -S 8192 -o 4096
Sending 1000000 write requests, 4096 bytes each, 64 in parallel (starting at offset 4096, step size 8192)
Run completed in 19.616 seconds.
$ filefrag ~/tmp/test.raw
/home/kwolf/tmp/test.raw: 2000000 extents found
$ time ./qemu-img map ~/tmp/test.raw
Offset Length Mapped to File
0 0x1e8480000 0 /home/kwolf/tmp/test.raw
real 0m1,279s
user 0m0,043s
sys 0m1,226s
With the new default extent size hint of 1 MB:
$ ./qemu-img create -f raw -o extent_size_hint=1M ~/tmp/test.raw 10G
Formatting '/home/kwolf/tmp/test.raw', fmt=raw size=10737418240 extent_size_hint=1048576
$ ./qemu-img bench -f raw -t none -n -w ~/tmp/test.raw -c 1000000 -S 8192 -o 0
Sending 1000000 write requests, 4096 bytes each, 64 in parallel (starting at offset 0, step size 8192)
Run completed in 11.833 seconds.
$ ./qemu-img bench -f raw -t none -n -w ~/tmp/test.raw -c 1000000 -S 8192 -o 4096
Sending 1000000 write requests, 4096 bytes each, 64 in parallel (starting at offset 4096, step size 8192)
Run completed in 10.155 seconds.
$ filefrag ~/tmp/test.raw
/home/kwolf/tmp/test.raw: 178 extents found
$ time ./qemu-img map ~/tmp/test.raw
Offset Length Mapped to File
0 0x1e8480000 0 /home/kwolf/tmp/test.raw
real 0m0,061s
user 0m0,040s
sys 0m0,014s
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200707142329.48303-1-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit ffa244c84a1a30dff69ecc80b0137a2b6d428ecb)
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
block/file-posix.c | 44 ++++++++++++++++++++++++++++++++
include/block/block_int.h | 1 +
qapi/block-core.json | 11 +++++---
tests/qemu-iotests/082.out | 16 ++++++++++++
tests/qemu-iotests/106 | 7 +++--
tests/qemu-iotests/175 | 6 ++---
tests/qemu-iotests/243 | 6 ++---
tests/qemu-iotests/common.filter | 1 +
8 files changed, 80 insertions(+), 12 deletions(-)
diff --git a/block/file-posix.c b/block/file-posix.c
index 2d834fbdf6..62a463229f 100644
--- a/block/file-posix.c
+++ b/block/file-posix.c
@@ -30,6 +30,7 @@
#include "block/block_int.h"
#include "qemu/module.h"
#include "qemu/option.h"
+#include "qemu/units.h"
#include "trace.h"
#include "block/thread-pool.h"
#include "qemu/iov.h"
@@ -2289,6 +2290,14 @@ raw_co_create(BlockdevCreateOptions *options, Error **errp)
if (!file_opts->has_preallocation) {
file_opts->preallocation = PREALLOC_MODE_OFF;
}
+ if (!file_opts->has_extent_size_hint) {
+ file_opts->extent_size_hint = 1 * MiB;
+ }
+ if (file_opts->extent_size_hint > UINT32_MAX) {
+ result = -EINVAL;
+ error_setg(errp, "Extent size hint is too large");
+ goto out;
+ }
/* Create file */
fd = qemu_open(file_opts->filename, O_RDWR | O_CREAT | O_BINARY, 0644);
@@ -2346,6 +2355,27 @@ raw_co_create(BlockdevCreateOptions *options, Error **errp)
}
#endif
}
+#ifdef FS_IOC_FSSETXATTR
+ /*
+ * Try to set the extent size hint. Failure is not fatal, and a warning is
+ * only printed if the option was explicitly specified.
+ */
+ {
+ struct fsxattr attr;
+ result = ioctl(fd, FS_IOC_FSGETXATTR, &attr);
+ if (result == 0) {
+ attr.fsx_xflags |= FS_XFLAG_EXTSIZE;
+ attr.fsx_extsize = file_opts->extent_size_hint;
+ result = ioctl(fd, FS_IOC_FSSETXATTR, &attr);
+ }
+ if (result < 0 && file_opts->has_extent_size_hint &&
+ file_opts->extent_size_hint)
+ {
+ warn_report("Failed to set extent size hint: %s",
+ strerror(errno));
+ }
+ }
+#endif
/* Resize and potentially preallocate the file to the desired
* final size */
@@ -2381,6 +2411,8 @@ static int coroutine_fn raw_co_create_opts(BlockDriver *drv,
{
BlockdevCreateOptions options;
int64_t total_size = 0;
+ int64_t extent_size_hint = 0;
+ bool has_extent_size_hint = false;
bool nocow = false;
PreallocMode prealloc;
char *buf = NULL;
@@ -2392,6 +2424,11 @@ static int coroutine_fn raw_co_create_opts(BlockDriver *drv,
/* Read out options */
total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
BDRV_SECTOR_SIZE);
+ if (qemu_opt_get(opts, BLOCK_OPT_EXTENT_SIZE_HINT)) {
+ has_extent_size_hint = true;
+ extent_size_hint =
+ qemu_opt_get_size_del(opts, BLOCK_OPT_EXTENT_SIZE_HINT, -1);
+ }
nocow = qemu_opt_get_bool(opts, BLOCK_OPT_NOCOW, false);
buf = qemu_opt_get_del(opts, BLOCK_OPT_PREALLOC);
prealloc = qapi_enum_parse(&PreallocMode_lookup, buf,
@@ -2411,6 +2448,8 @@ static int coroutine_fn raw_co_create_opts(BlockDriver *drv,
.preallocation = prealloc,
.has_nocow = true,
.nocow = nocow,
+ .has_extent_size_hint = has_extent_size_hint,
+ .extent_size_hint = extent_size_hint,
},
};
return raw_co_create(&options, errp);
@@ -2902,6 +2941,11 @@ static QemuOptsList raw_create_opts = {
#endif
", full)"
},
+ {
+ .name = BLOCK_OPT_EXTENT_SIZE_HINT,
+ .type = QEMU_OPT_SIZE,
+ .help = "Extent size hint for the image file, 0 to disable"
+ },
{ /* end of list */ }
}
};
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 41f13ecbed..4b23da2eb0 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -53,6 +53,7 @@
#define BLOCK_OPT_ADAPTER_TYPE "adapter_type"
#define BLOCK_OPT_REDUNDANCY "redundancy"
#define BLOCK_OPT_NOCOW "nocow"
+#define BLOCK_OPT_EXTENT_SIZE_HINT "extent_size_hint"
#define BLOCK_OPT_OBJECT_SIZE "object_size"
#define BLOCK_OPT_REFCOUNT_BITS "refcount_bits"
#define BLOCK_OPT_DATA_FILE "data_file"
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 289320902d..c7aa919fa3 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -4272,14 +4272,17 @@
# falloc (if defined CONFIG_POSIX_FALLOCATE),
# full (if defined CONFIG_POSIX))
# @nocow Turn off copy-on-write (valid only on btrfs; default: off)
+# @extent-size-hint: Extent size hint to add to the image file; 0 for not
+# adding an extent size hint (default: 1 MB, since 5.1)
#
# Since: 2.12
##
{ 'struct': 'BlockdevCreateOptionsFile',
- 'data': { 'filename': 'str',
- 'size': 'size',
- '*preallocation': 'PreallocMode',
- '*nocow': 'bool' } }
+ 'data': { 'filename': 'str',
+ 'size': 'size',
+ '*preallocation': 'PreallocMode',
+ '*nocow': 'bool',
+ '*extent-size-hint': 'size'} }
##
# @BlockdevCreateOptionsGluster:
diff --git a/tests/qemu-iotests/082.out b/tests/qemu-iotests/082.out
index 9d4ed4dc9d..7a87946fa2 100644
--- a/tests/qemu-iotests/082.out
+++ b/tests/qemu-iotests/082.out
@@ -59,6 +59,7 @@ Supported options:
encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm
encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase
encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
+ extent_size_hint=<size> - Extent size hint for the image file, 0 to disable
lazy_refcounts=<bool (on/off)> - Postpone refcount updates
nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs)
preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full)
@@ -82,6 +83,7 @@ Supported options:
encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm
encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase
encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
+ extent_size_hint=<size> - Extent size hint for the image file, 0 to disable
lazy_refcounts=<bool (on/off)> - Postpone refcount updates
nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs)
preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full)
@@ -105,6 +107,7 @@ Supported options:
encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm
encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase
encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
+ extent_size_hint=<size> - Extent size hint for the image file, 0 to disable
lazy_refcounts=<bool (on/off)> - Postpone refcount updates
nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs)
preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full)
@@ -128,6 +131,7 @@ Supported options:
encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm
encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase
encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
+ extent_size_hint=<size> - Extent size hint for the image file, 0 to disable
lazy_refcounts=<bool (on/off)> - Postpone refcount updates
nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs)
preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full)
@@ -151,6 +155,7 @@ Supported options:
encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm
encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase
encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
+ extent_size_hint=<size> - Extent size hint for the image file, 0 to disable
lazy_refcounts=<bool (on/off)> - Postpone refcount updates
nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs)
preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full)
@@ -174,6 +179,7 @@ Supported options:
encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm
encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase
encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
+ extent_size_hint=<size> - Extent size hint for the image file, 0 to disable
lazy_refcounts=<bool (on/off)> - Postpone refcount updates
nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs)
preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full)
@@ -197,6 +203,7 @@ Supported options:
encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm
encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase
encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
+ extent_size_hint=<size> - Extent size hint for the image file, 0 to disable
lazy_refcounts=<bool (on/off)> - Postpone refcount updates
nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs)
preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full)
@@ -220,6 +227,7 @@ Supported options:
encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm
encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase
encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
+ extent_size_hint=<size> - Extent size hint for the image file, 0 to disable
lazy_refcounts=<bool (on/off)> - Postpone refcount updates
nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs)
preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full)
@@ -339,6 +347,7 @@ Supported options:
encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm
encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase
encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
+ extent_size_hint=<size> - Extent size hint for the image file, 0 to disable
lazy_refcounts=<bool (on/off)> - Postpone refcount updates
nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs)
preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full)
@@ -362,6 +371,7 @@ Supported options:
encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm
encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase
encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
+ extent_size_hint=<size> - Extent size hint for the image file, 0 to disable
lazy_refcounts=<bool (on/off)> - Postpone refcount updates
nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs)
preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full)
@@ -385,6 +395,7 @@ Supported options:
encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm
encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase
encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
+ extent_size_hint=<size> - Extent size hint for the image file, 0 to disable
lazy_refcounts=<bool (on/off)> - Postpone refcount updates
nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs)
preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full)
@@ -408,6 +419,7 @@ Supported options:
encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm
encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase
encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
+ extent_size_hint=<size> - Extent size hint for the image file, 0 to disable
lazy_refcounts=<bool (on/off)> - Postpone refcount updates
nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs)
preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full)
@@ -431,6 +443,7 @@ Supported options:
encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm
encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase
encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
+ extent_size_hint=<size> - Extent size hint for the image file, 0 to disable
lazy_refcounts=<bool (on/off)> - Postpone refcount updates
nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs)
preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full)
@@ -454,6 +467,7 @@ Supported options:
encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm
encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase
encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
+ extent_size_hint=<size> - Extent size hint for the image file, 0 to disable
lazy_refcounts=<bool (on/off)> - Postpone refcount updates
nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs)
preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full)
@@ -477,6 +491,7 @@ Supported options:
encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm
encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase
encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
+ extent_size_hint=<size> - Extent size hint for the image file, 0 to disable
lazy_refcounts=<bool (on/off)> - Postpone refcount updates
nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs)
preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full)
@@ -500,6 +515,7 @@ Supported options:
encrypt.ivgen-hash-alg=<str> - Name of IV generator hash algorithm
encrypt.key-secret=<str> - ID of secret providing qcow AES key or LUKS passphrase
encryption=<bool (on/off)> - Encrypt the image with format 'aes'. (Deprecated in favor of encrypt.format=aes)
+ extent_size_hint=<size> - Extent size hint for the image file, 0 to disable
lazy_refcounts=<bool (on/off)> - Postpone refcount updates
nocow=<bool (on/off)> - Turn off copy-on-write (valid only on btrfs)
preallocation=<str> - Preallocation mode (allowed values: off, metadata, falloc, full)
diff --git a/tests/qemu-iotests/106 b/tests/qemu-iotests/106
index ac47eaa0f5..ee6f51d08b 100755
--- a/tests/qemu-iotests/106
+++ b/tests/qemu-iotests/106
@@ -51,7 +51,10 @@ for create_mode in off falloc full; do
echo
echo "--- create_mode=$create_mode growth_mode=$growth_mode ---"
- IMGOPTS="preallocation=$create_mode" _make_test_img ${CREATION_SIZE}K
+ # Our calculation below assumes kilobytes as unit for the actual size.
+ # Disable the extent size hint because it would give us a result in
+ # megabytes.
+ IMGOPTS="preallocation=$create_mode,extent_size_hint=0" _make_test_img ${CREATION_SIZE}K
$QEMU_IMG resize -f "$IMGFMT" --preallocation=$growth_mode "$TEST_IMG" +${GROWTH_SIZE}K
expected_size=0
@@ -98,7 +101,7 @@ for growth_mode in falloc full; do
# plain int. We should use the correct type for the result, and
# this tests we do.
- _make_test_img 2G
+ _make_test_img -o "extent_size_hint=0" 2G
$QEMU_IMG resize -f "$IMGFMT" --preallocation=$growth_mode "$TEST_IMG" +${GROWTH_SIZE}K
actual_size=$($QEMU_IMG info -f "$IMGFMT" "$TEST_IMG" | grep 'disk size')
diff --git a/tests/qemu-iotests/175 b/tests/qemu-iotests/175
index 55db2803ed..8a8494aeb6 100755
--- a/tests/qemu-iotests/175
+++ b/tests/qemu-iotests/175
@@ -89,20 +89,20 @@ min_blocks=$(stat -c '%b' "$TEST_DIR/empty")
echo
echo "== creating image with default preallocation =="
-_make_test_img $size | _filter_imgfmt
+_make_test_img -o extent_size_hint=0 $size | _filter_imgfmt
stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $min_blocks $size
for mode in off full falloc; do
echo
echo "== creating image with preallocation $mode =="
- IMGOPTS=preallocation=$mode _make_test_img $size | _filter_imgfmt
+ IMGOPTS="preallocation=$mode,extent_size_hint=0" _make_test_img $size | _filter_imgfmt
stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $min_blocks $size
done
for new_size in 4096 1048576; do
echo
echo "== resize empty image with block_resize =="
- _make_test_img 0 | _filter_imgfmt
+ _make_test_img -o extent_size_hint=0 0 | _filter_imgfmt
_block_resize $TEST_IMG $new_size >/dev/null
stat -c "size=%s, blocks=%b" $TEST_IMG | _filter_blocks $extra_blocks $min_blocks $new_size
done
diff --git a/tests/qemu-iotests/243 b/tests/qemu-iotests/243
index e563761307..104c7256c4 100755
--- a/tests/qemu-iotests/243
+++ b/tests/qemu-iotests/243
@@ -47,7 +47,7 @@ for mode in off metadata falloc full; do
echo "=== preallocation=$mode ==="
echo
- IMGOPTS="preallocation=$mode" _make_test_img 64M
+ IMGOPTS="preallocation=$mode,extent_size_hint=0" _make_test_img 64M
printf "File size: "
du -b $TEST_IMG | cut -f1
@@ -64,7 +64,7 @@ for mode in off metadata falloc full; do
echo "=== External data file: preallocation=$mode ==="
echo
- IMGOPTS="data_file=$TEST_IMG.data,preallocation=$mode" _make_test_img 64M
+ IMGOPTS="data_file=$TEST_IMG.data,preallocation=$mode,extent_size_hint=0" _make_test_img 64M
echo -n "qcow2 file size: "
du -b $TEST_IMG | cut -f1
@@ -75,7 +75,7 @@ for mode in off metadata falloc full; do
echo -n "qcow2 disk usage: "
[ $(du -B1 $TEST_IMG | cut -f1) -lt 1048576 ] && echo "low" || echo "high"
echo -n "data disk usage: "
- [ $(du -B1 $TEST_IMG.data | cut -f1) -lt 1048576 ] && echo "low" || echo "high"
+ [ $(du -B1 $TEST_IMG.data | cut -f1) -lt 2097152 ] && echo "low" || echo "high"
done
diff --git a/tests/qemu-iotests/common.filter b/tests/qemu-iotests/common.filter
index c8e8663665..f29c1d3238 100644
--- a/tests/qemu-iotests/common.filter
+++ b/tests/qemu-iotests/common.filter
@@ -146,6 +146,7 @@ _filter_img_create()
-e "s# refcount_bits=[0-9]\\+##g" \
-e "s# key-secret=[a-zA-Z0-9]\\+##g" \
-e "s# iter-time=[0-9]\\+##g" \
+ -e "s# extent_size_hint=[0-9]\\+##g" \
-e "s# force_size=\\(on\\|off\\)##g"
}
--
2.27.0

89
SOURCES/kvm-glib-compat-add-g_unix_get_passwd_entry_qemu.patch Normal file
View File

@ -0,0 +1,89 @@
From 15331267d11713906361ddd767c3e04ae46d9a83 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
Date: Thu, 29 Jul 2021 04:55:50 -0400
Subject: [PATCH 01/14] glib-compat: add g_unix_get_passwd_entry_qemu()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: <20210609100615.2501448-2-marcandre.lureau@redhat.com>
Patchwork-id: 101687
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 1/4] glib-compat: add g_unix_get_passwd_entry_qemu()
Bugzilla: 1967716
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Michal Privoznik <mprivozn@redhat.com>
From: Marc-André Lureau <marcandre.lureau@redhat.com>
The glib function was introduced in 2.64. It's a safer version of
getpwnam, and also simpler to use than getpwnam_r.
Currently, it's only use by the next patch in qemu-ga, which doesn't
(well well...) need the thread safety guarantees. Since the fallback
version is still unsafe, I would rather keep the _qemu postfix, to make
sure it's not being misused by mistake. When/if necessary, we can
implement a safer fallback and drop the _qemu suffix.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
*fix checkpatch warnings about newlines before/after block comments
Signed-off-by: Michael Roth <michael.roth@amd.com>
(cherry picked from commit 6d593ab451c490b0ca941c6a519894231634751e)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
include/glib-compat.h | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/include/glib-compat.h b/include/glib-compat.h
index 0b0ec76299..695a96f7ea 100644
--- a/include/glib-compat.h
+++ b/include/glib-compat.h
@@ -30,6 +30,11 @@
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
#include <glib.h>
+#if defined(G_OS_UNIX)
+#include <glib-unix.h>
+#include <sys/types.h>
+#include <pwd.h>
+#endif
/*
* Note that because of the GLIB_VERSION_MAX_ALLOWED constant above, allowing
@@ -72,6 +77,29 @@
gint g_poll_fixed(GPollFD *fds, guint nfds, gint timeout);
#endif
+#if defined(G_OS_UNIX)
+/*
+ * Note: The fallback implementation is not MT-safe, and it returns a copy of
+ * the libc passwd (must be g_free() after use) but not the content. Because of
+ * these important differences the caller must be aware of, it's not #define for
+ * GLib API substitution.
+ */
+static inline struct passwd *
+g_unix_get_passwd_entry_qemu(const gchar *user_name, GError **error)
+{
+#if GLIB_CHECK_VERSION(2, 64, 0)
+ return g_unix_get_passwd_entry(user_name, error);
+#else
+ struct passwd *p = getpwnam(user_name);
+ if (!p) {
+ g_set_error_literal(error, G_UNIX_ERROR, 0, g_strerror(errno));
+ return NULL;
+ }
+ return (struct passwd *)g_memdup(p, sizeof(*p));
+#endif
+}
+#endif /* G_OS_UNIX */
+
#pragma GCC diagnostic pop
#endif
--
2.27.0

80
SOURCES/kvm-hw-intc-arm_gic-Fix-interrupt-ID-in-GICD_SGIR-regist.patch Normal file
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@ -0,0 +1,80 @@
From dad4f9beaa3fd1eec1e0dd46c3d5cd2f444c0f48 Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Tue, 13 Apr 2021 20:05:51 -0400
Subject: [PATCH 1/7] hw/intc/arm_gic: Fix interrupt ID in GICD_SGIR register
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210413200551.3825495-2-jmaloy@redhat.com>
Patchwork-id: 101471
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 1/1] hw/intc/arm_gic: Fix interrupt ID in GICD_SGIR register
Bugzilla: 1925430
RH-Acked-by: Andrew Jones <drjones@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
From: Philippe Mathieu-Daudé <f4bug@amsat.org>
Per the ARM Generic Interrupt Controller Architecture specification
(document "ARM IHI 0048B.b (ID072613)"), the SGIINTID field is 4 bit,
not 10:
- 4.3 Distributor register descriptions
- 4.3.15 Software Generated Interrupt Register, GICD_SG
- Table 4-21 GICD_SGIR bit assignments
The Interrupt ID of the SGI to forward to the specified CPU
interfaces. The value of this field is the Interrupt ID, in
the range 0-15, for example a value of 0b0011 specifies
Interrupt ID 3.
Correct the irq mask to fix an undefined behavior (which eventually
lead to a heap-buffer-overflow, see [Buglink]):
$ echo 'writel 0x8000f00 0xff4affb0' | qemu-system-aarch64 -M virt,accel=qtest -qtest stdio
[I 1612088147.116987] OPENED
[R +0.278293] writel 0x8000f00 0xff4affb0
../hw/intc/arm_gic.c:1498:13: runtime error: index 944 out of bounds for type 'uint8_t [16][8]'
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior ../hw/intc/arm_gic.c:1498:13
This fixes a security issue when running with KVM on Arm with
kernel-irqchip=off. (The default is kernel-irqchip=on, which is
unaffected, and which is also the correct choice for performance.)
Cc: qemu-stable@nongnu.org
Fixes: CVE-2021-20221
Fixes: 9ee6e8bb853 ("ARMv7 support.")
Buglink: https://bugs.launchpad.net/qemu/+bug/1913916
Buglink: https://bugs.launchpad.net/qemu/+bug/1913917
Reported-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20210131103401.217160-1-f4bug@amsat.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit edfe2eb4360cde4ed5d95bda7777edcb3510f76a)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/intc/arm_gic.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/intc/arm_gic.c b/hw/intc/arm_gic.c
index 1d7da7baa2..df355f4d11 100644
--- a/hw/intc/arm_gic.c
+++ b/hw/intc/arm_gic.c
@@ -1455,7 +1455,7 @@ static void gic_dist_writel(void *opaque, hwaddr offset,
int target_cpu;
cpu = gic_get_current_cpu(s);
- irq = value & 0x3ff;
+ irq = value & 0xf;
switch ((value >> 24) & 3) {
case 0:
mask = (value >> 16) & ALL_CPU_MASK;
--
2.27.0

213
SOURCES/kvm-i386-Add-the-support-for-AMD-EPYC-3rd-generation-pro.patch Normal file
View File

@ -0,0 +1,213 @@
From 4daa8dca77edec191dfe0ae4a0a9fc70f8f63607 Mon Sep 17 00:00:00 2001
From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Date: Wed, 24 Feb 2021 11:30:37 -0500
Subject: [PATCH 4/4] i386: Add the support for AMD EPYC 3rd generation
processors
RH-Author: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-id: <20210224113037.15599-5-dgilbert@redhat.com>
Patchwork-id: 101202
O-Subject: [RHEL-8.4.0 qemu-kvm PATCH 4/4] i386: Add the support for AMD EPYC 3rd generation processors
Bugzilla: 1790620
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
RH-Acked-by: Sergio Lopez Pascual <slp@redhat.com>
RH-Acked-by: Peter Xu <peterx@redhat.com>
From: Babu Moger <babu.moger@amd.com>
Adds the support for AMD 3rd generation processors. The model
display for the new processor will be EPYC-Milan.
Adds the following new feature bits on top of the feature bits from
the first and second generation EPYC models.
pcid : Process context identifiers support
ibrs : Indirect Branch Restricted Speculation
ssbd : Speculative Store Bypass Disable
erms : Enhanced REP MOVSB/STOSB support
fsrm : Fast Short REP MOVSB support
invpcid : Invalidate processor context ID
pku : Protection keys support
svme-addr-chk : SVM instructions address check for #GP handling
Depends on the following kernel commits:
14c2bf81fcd2 ("KVM: SVM: Fix #GP handling for doubly-nested virtualization")
3b9c723ed7cf ("KVM: SVM: Add support for SVM instruction address check change")
4aa2691dcbd3 ("8ce1c461188799d863398dd2865d KVM: x86: Factor out x86 instruction emulation with decoding")
4407a797e941 ("KVM: SVM: Enable INVPCID feature on AMD")
9715092f8d7e ("KVM: X86: Move handling of INVPCID types to x86")
3f3393b3ce38 ("KVM: X86: Rename and move the function vmx_handle_memory_failure to x86.c")
830bd71f2c06 ("KVM: SVM: Remove set_cr_intercept, clr_cr_intercept and is_cr_intercept")
4c44e8d6c193 ("KVM: SVM: Add new intercept word in vmcb_control_area")
c62e2e94b9d4 ("KVM: SVM: Modify 64 bit intercept field to two 32 bit vectors")
9780d51dc2af ("KVM: SVM: Modify intercept_exceptions to generic intercepts")
30abaa88382c ("KVM: SVM: Change intercept_dr to generic intercepts")
03bfeeb988a9 ("KVM: SVM: Change intercept_cr to generic intercepts")
c45ad7229d13 ("KVM: SVM: Introduce vmcb_(set_intercept/clr_intercept/_is_intercept)")
a90c1ed9f11d ("(pcid) KVM: nSVM: Remove unused field")
fa44b82eb831 ("KVM: x86: Move MPK feature detection to common code")
38f3e775e9c2 ("x86/Kconfig: Update config and kernel doc for MPK feature on AMD")
37486135d3a7 ("KVM: x86: Fix pkru save/restore when guest CR4.PKE=0, move it to x86.c")
Signed-off-by: Babu Moger <babu.moger@amd.com>
Message-Id: <161290460478.11352.8933244555799318236.stgit@bmoger-ubuntu>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
(cherry picked from commit 623972ceae091b31331ae4a1dc94fe5cbb891937)
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
target/i386/cpu.c | 107 +++++++++++++++++++++++++++++++++++++++++++++-
target/i386/cpu.h | 4 ++
2 files changed, 110 insertions(+), 1 deletion(-)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 7227c803c3..d5b0d4b7f0 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1133,7 +1133,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
"clzero", NULL, "xsaveerptr", NULL,
NULL, NULL, NULL, NULL,
NULL, "wbnoinvd", NULL, NULL,
- "ibpb", NULL, NULL, "amd-stibp",
+ "ibpb", NULL, "ibrs", "amd-stibp",
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
"amd-ssbd", "virt-ssbd", "amd-no-ssb", NULL,
@@ -1853,6 +1853,56 @@ static CPUCaches epyc_rome_cache_info = {
},
};
+static CPUCaches epyc_milan_cache_info = {
+ .l1d_cache = &(CPUCacheInfo) {
+ .type = DATA_CACHE,
+ .level = 1,
+ .size = 32 * KiB,
+ .line_size = 64,
+ .associativity = 8,
+ .partitions = 1,
+ .sets = 64,
+ .lines_per_tag = 1,
+ .self_init = 1,
+ .no_invd_sharing = true,
+ },
+ .l1i_cache = &(CPUCacheInfo) {
+ .type = INSTRUCTION_CACHE,
+ .level = 1,
+ .size = 32 * KiB,
+ .line_size = 64,
+ .associativity = 8,
+ .partitions = 1,
+ .sets = 64,
+ .lines_per_tag = 1,
+ .self_init = 1,
+ .no_invd_sharing = true,
+ },
+ .l2_cache = &(CPUCacheInfo) {
+ .type = UNIFIED_CACHE,
+ .level = 2,
+ .size = 512 * KiB,
+ .line_size = 64,
+ .associativity = 8,
+ .partitions = 1,
+ .sets = 1024,
+ .lines_per_tag = 1,
+ },
+ .l3_cache = &(CPUCacheInfo) {
+ .type = UNIFIED_CACHE,
+ .level = 3,
+ .size = 32 * MiB,
+ .line_size = 64,
+ .associativity = 16,
+ .partitions = 1,
+ .sets = 32768,
+ .lines_per_tag = 1,
+ .self_init = true,
+ .inclusive = true,
+ .complex_indexing = true,
+ },
+};
+
/* The following VMX features are not supported by KVM and are left out in the
* CPU definitions:
*
@@ -4124,6 +4174,61 @@ static X86CPUDefinition builtin_x86_defs[] = {
.model_id = "AMD EPYC-Rome Processor",
.cache_info = &epyc_rome_cache_info,
},
+ {
+ .name = "EPYC-Milan",
+ .level = 0xd,
+ .vendor = CPUID_VENDOR_AMD,
+ .family = 25,
+ .model = 1,
+ .stepping = 1,
+ .features[FEAT_1_EDX] =
+ CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX | CPUID_CLFLUSH |
+ CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA | CPUID_PGE |
+ CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 | CPUID_MCE |
+ CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE | CPUID_DE |
+ CPUID_VME | CPUID_FP87,
+ .features[FEAT_1_ECX] =
+ CPUID_EXT_RDRAND | CPUID_EXT_F16C | CPUID_EXT_AVX |
+ CPUID_EXT_XSAVE | CPUID_EXT_AES | CPUID_EXT_POPCNT |
+ CPUID_EXT_MOVBE | CPUID_EXT_SSE42 | CPUID_EXT_SSE41 |
+ CPUID_EXT_CX16 | CPUID_EXT_FMA | CPUID_EXT_SSSE3 |
+ CPUID_EXT_MONITOR | CPUID_EXT_PCLMULQDQ | CPUID_EXT_SSE3 |
+ CPUID_EXT_PCID,
+ .features[FEAT_8000_0001_EDX] =
+ CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_PDPE1GB |
+ CPUID_EXT2_FFXSR | CPUID_EXT2_MMXEXT | CPUID_EXT2_NX |
+ CPUID_EXT2_SYSCALL,
+ .features[FEAT_8000_0001_ECX] =
+ CPUID_EXT3_OSVW | CPUID_EXT3_3DNOWPREFETCH |
+ CPUID_EXT3_MISALIGNSSE | CPUID_EXT3_SSE4A | CPUID_EXT3_ABM |
+ CPUID_EXT3_CR8LEG | CPUID_EXT3_SVM | CPUID_EXT3_LAHF_LM |
+ CPUID_EXT3_TOPOEXT | CPUID_EXT3_PERFCORE,
+ .features[FEAT_8000_0008_EBX] =
+ CPUID_8000_0008_EBX_CLZERO | CPUID_8000_0008_EBX_XSAVEERPTR |
+ CPUID_8000_0008_EBX_WBNOINVD | CPUID_8000_0008_EBX_IBPB |
+ CPUID_8000_0008_EBX_IBRS | CPUID_8000_0008_EBX_STIBP |
+ CPUID_8000_0008_EBX_AMD_SSBD,
+ .features[FEAT_7_0_EBX] =
+ CPUID_7_0_EBX_FSGSBASE | CPUID_7_0_EBX_BMI1 | CPUID_7_0_EBX_AVX2 |
+ CPUID_7_0_EBX_SMEP | CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_RDSEED |
+ CPUID_7_0_EBX_ADX | CPUID_7_0_EBX_SMAP | CPUID_7_0_EBX_CLFLUSHOPT |
+ CPUID_7_0_EBX_SHA_NI | CPUID_7_0_EBX_CLWB | CPUID_7_0_EBX_ERMS |
+ CPUID_7_0_EBX_INVPCID,
+ .features[FEAT_7_0_ECX] =
+ CPUID_7_0_ECX_UMIP | CPUID_7_0_ECX_RDPID | CPUID_7_0_ECX_PKU,
+ .features[FEAT_7_0_EDX] =
+ CPUID_7_0_EDX_FSRM,
+ .features[FEAT_XSAVE] =
+ CPUID_XSAVE_XSAVEOPT | CPUID_XSAVE_XSAVEC |
+ CPUID_XSAVE_XGETBV1 | CPUID_XSAVE_XSAVES,
+ .features[FEAT_6_EAX] =
+ CPUID_6_EAX_ARAT,
+ .features[FEAT_SVM] =
+ CPUID_SVM_NPT | CPUID_SVM_NRIPSAVE | CPUID_SVM_SVME_ADDR_CHK,
+ .xlevel = 0x8000001E,
+ .model_id = "AMD EPYC-Milan Processor",
+ .cache_info = &epyc_milan_cache_info,
+ },
};
/* KVM-specific features that are automatically added/removed
diff --git a/target/i386/cpu.h b/target/i386/cpu.h
index e1b67910c2..7a3aa40201 100644
--- a/target/i386/cpu.h
+++ b/target/i386/cpu.h
@@ -800,8 +800,12 @@ typedef uint64_t FeatureWordArray[FEATURE_WORDS];
#define CPUID_8000_0008_EBX_WBNOINVD (1U << 9)
/* Indirect Branch Prediction Barrier */
#define CPUID_8000_0008_EBX_IBPB (1U << 12)
+/* Indirect Branch Restricted Speculation */
+#define CPUID_8000_0008_EBX_IBRS (1U << 14)
/* Single Thread Indirect Branch Predictors */
#define CPUID_8000_0008_EBX_STIBP (1U << 15)
+/* Speculative Store Bypass Disable */
+#define CPUID_8000_0008_EBX_AMD_SSBD (1U << 24)
#define CPUID_XSAVE_XSAVEOPT (1U << 0)
#define CPUID_XSAVE_XSAVEC (1U << 1)
--
2.27.0

120
SOURCES/kvm-ide-atapi-check-logical-block-address-and-read-size-.patch Normal file
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@ -0,0 +1,120 @@
From 0453588f95294ed5ce912cb8b810a322bf9d91e0 Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Thu, 25 Feb 2021 19:43:02 -0500
Subject: [PATCH] ide: atapi: check logical block address and read size
(CVE-2020-29443)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210225194302.3137699-2-jmaloy@redhat.com>
Patchwork-id: 101208
O-Subject: [RHEL-8.4.0 qemu-kvm PATCH v2 1/1] ide: atapi: check logical block address and read size (CVE-2020-29443)
Bugzilla: 1917451
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Danilo de Paula <ddepaula@redhat.com>
RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
From: Prasad J Pandit <pjp@fedoraproject.org>
While processing ATAPI cmd_read/cmd_read_cd commands,
Logical Block Address (LBA) maybe invalid OR closer to the last block,
leading to an OOB access issues. Add range check to avoid it.
Fixes: CVE-2020-29443
Reported-by: Wenxiang Qian <leonwxqian@gmail.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Message-Id: <20210118115130.457044-1-ppandit@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit b8d7f1bc59276fec85e4d09f1567613a3e14d31e)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/ide/atapi.c | 30 ++++++++++++++++++++++++------
1 file changed, 24 insertions(+), 6 deletions(-)
diff --git a/hw/ide/atapi.c b/hw/ide/atapi.c
index 17a9d635d8..d064935c8d 100644
--- a/hw/ide/atapi.c
+++ b/hw/ide/atapi.c
@@ -320,6 +320,8 @@ static void ide_atapi_cmd_reply(IDEState *s, int size, int max_size)
static void ide_atapi_cmd_read_pio(IDEState *s, int lba, int nb_sectors,
int sector_size)
{
+ assert(0 <= lba && lba < (s->nb_sectors >> 2));
+
s->lba = lba;
s->packet_transfer_size = nb_sectors * sector_size;
s->elementary_transfer_size = 0;
@@ -418,6 +420,8 @@ eot:
static void ide_atapi_cmd_read_dma(IDEState *s, int lba, int nb_sectors,
int sector_size)
{
+ assert(0 <= lba && lba < (s->nb_sectors >> 2));
+
s->lba = lba;
s->packet_transfer_size = nb_sectors * sector_size;
s->io_buffer_size = 0;
@@ -971,35 +975,49 @@ static void cmd_prevent_allow_medium_removal(IDEState *s, uint8_t* buf)
static void cmd_read(IDEState *s, uint8_t* buf)
{
- int nb_sectors, lba;
+ unsigned int nb_sectors, lba;
+
+ /* Total logical sectors of ATAPI_SECTOR_SIZE(=2048) bytes */
+ uint64_t total_sectors = s->nb_sectors >> 2;
if (buf[0] == GPCMD_READ_10) {
nb_sectors = lduw_be_p(buf + 7);
} else {
nb_sectors = ldl_be_p(buf + 6);
}
-
- lba = ldl_be_p(buf + 2);
if (nb_sectors == 0) {
ide_atapi_cmd_ok(s);
return;
}
+ lba = ldl_be_p(buf + 2);
+ if (lba >= total_sectors || lba + nb_sectors - 1 >= total_sectors) {
+ ide_atapi_cmd_error(s, ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR);
+ return;
+ }
+
ide_atapi_cmd_read(s, lba, nb_sectors, 2048);
}
static void cmd_read_cd(IDEState *s, uint8_t* buf)
{
- int nb_sectors, lba, transfer_request;
+ unsigned int nb_sectors, lba, transfer_request;
- nb_sectors = (buf[6] << 16) | (buf[7] << 8) | buf[8];
- lba = ldl_be_p(buf + 2);
+ /* Total logical sectors of ATAPI_SECTOR_SIZE(=2048) bytes */
+ uint64_t total_sectors = s->nb_sectors >> 2;
+ nb_sectors = (buf[6] << 16) | (buf[7] << 8) | buf[8];
if (nb_sectors == 0) {
ide_atapi_cmd_ok(s);
return;
}
+ lba = ldl_be_p(buf + 2);
+ if (lba >= total_sectors || lba + nb_sectors - 1 >= total_sectors) {
+ ide_atapi_cmd_error(s, ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR);
+ return;
+ }
+
transfer_request = buf[9] & 0xf8;
if (transfer_request == 0x00) {
/* nothing */
--
2.27.0

53
SOURCES/kvm-lan9118-switch-to-use-qemu_receive_packet-for-loopba.patch Normal file
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@ -0,0 +1,53 @@
From e2cafb929acb74377754cb688419575b139b922a Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Tue, 29 Jun 2021 03:42:47 -0400
Subject: [PATCH 9/9] lan9118: switch to use qemu_receive_packet() for loopback
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210629034247.3286477-10-jmaloy@redhat.com>
Patchwork-id: 101790
O-Subject: [RHEL-8.4.0.z qemu-kvm PATCH v2 9/9] lan9118: switch to use qemu_receive_packet() for loopback
Bugzilla: 1932917
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Thomas Huth <thuth@redhat.com>
From: Alexander Bulekov <alxndr@bu.edu>
This patch switches to use qemu_receive_packet() which can detect
reentrancy and return early.
This is intended to address CVE-2021-3416.
Cc: Prasad J Pandit <ppandit@redhat.com>
Cc: qemu-stable@nongnu.org
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit 37cee01784ff0df13e5209517e1b3594a5e792d1)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/net/lan9118.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/net/lan9118.c b/hw/net/lan9118.c
index ed551f2178..7bb4633f0f 100644
--- a/hw/net/lan9118.c
+++ b/hw/net/lan9118.c
@@ -667,7 +667,7 @@ static void do_tx_packet(lan9118_state *s)
/* FIXME: Honor TX disable, and allow queueing of packets. */
if (s->phy_control & 0x4000) {
/* This assumes the receive routine doesn't touch the VLANClient. */
- lan9118_receive(qemu_get_queue(s->nic), s->txp->data, s->txp->len);
+ qemu_receive_packet(qemu_get_queue(s->nic), s->txp->data, s->txp->len);
} else {
qemu_send_packet(qemu_get_queue(s->nic), s->txp->data, s->txp->len);
}
--
2.27.0

47
SOURCES/kvm-libqos-pci-pc-use-32-bit-write-for-EJ-register.patch Normal file
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@ -0,0 +1,47 @@
From 2687e0348e3e4d377b4f5356e46948dc2b371b6d Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Wed, 21 Apr 2021 22:30:02 -0400
Subject: [PATCH 3/7] libqos: pci-pc: use 32-bit write for EJ register
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210421223006.19650-3-jmaloy@redhat.com>
Patchwork-id: 101484
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH v2 2/6] libqos: pci-pc: use 32-bit write for EJ register
Bugzilla: 1842478
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
From: Paolo Bonzini <pbonzini@redhat.com>
The memory region ops have min_access_size == 4 so obey it.
Tested-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit 4b7c06837ae0b1ff56473202a42e7e386f53d6db)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
tests/libqos/pci-pc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tests/libqos/pci-pc.c b/tests/libqos/pci-pc.c
index 0bc591d1da..3bb2eb3ba8 100644
--- a/tests/libqos/pci-pc.c
+++ b/tests/libqos/pci-pc.c
@@ -186,7 +186,7 @@ void qpci_unplug_acpi_device_test(QTestState *qts, const char *id, uint8_t slot)
g_assert(!qdict_haskey(response, "error"));
qobject_unref(response);
- qtest_outb(qts, ACPI_PCIHP_ADDR + PCI_EJ_BASE, 1 << slot);
+ qtest_outl(qts, ACPI_PCIHP_ADDR + PCI_EJ_BASE, 1 << slot);
qtest_qmp_eventwait(qts, "DEVICE_DELETED");
}
--
2.27.0

48
SOURCES/kvm-libqos-usb-hcd-ehci-use-32-bit-write-for-config-regi.patch Normal file
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@ -0,0 +1,48 @@
From 6320b4e76965b1cf64da4307f4d313fe6b2aa971 Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Wed, 21 Apr 2021 22:30:01 -0400
Subject: [PATCH 2/7] libqos: usb-hcd-ehci: use 32-bit write for config
register
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210421223006.19650-2-jmaloy@redhat.com>
Patchwork-id: 101478
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH v2 1/6] libqos: usb-hcd-ehci: use 32-bit write for config register
Bugzilla: 1842478
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
From: Paolo Bonzini <pbonzini@redhat.com>
The memory region ops have min_access_size == 4 so obey it.
Tested-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit 89ed83d8b23c11d250c290593cad3ca839d5b053)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
tests/usb-hcd-ehci-test.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tests/usb-hcd-ehci-test.c b/tests/usb-hcd-ehci-test.c
index 5251d539e9..c51e8bb223 100644
--- a/tests/usb-hcd-ehci-test.c
+++ b/tests/usb-hcd-ehci-test.c
@@ -96,7 +96,7 @@ static void pci_ehci_port_1(void)
static void pci_ehci_config(void)
{
/* hands over all ports from companion uhci to ehci */
- qpci_io_writew(ehci1.dev, ehci1.bar, 0x60, 1);
+ qpci_io_writel(ehci1.dev, ehci1.bar, 0x60, 1);
}
static void pci_uhci_port_2(void)
--
2.27.0

43
SOURCES/kvm-linux-headers-Add-VFIO_CCW_REQ_IRQ_INDEX.patch Normal file
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@ -0,0 +1,43 @@
From f844ca939adb619cce8426e104b0039a7eba70a6 Mon Sep 17 00:00:00 2001
From: Thomas Huth <thuth@redhat.com>
Date: Tue, 11 May 2021 11:24:04 -0400
Subject: [PATCH 1/5] linux-headers: Add VFIO_CCW_REQ_IRQ_INDEX
RH-Author: Thomas Huth <thuth@redhat.com>
Message-id: <20210511112405.297037-2-thuth@redhat.com>
Patchwork-id: 101537
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 1/2] linux-headers: Add VFIO_CCW_REQ_IRQ_INDEX
Bugzilla: 1940450
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
RH-Acked-by: David Hildenbrand <david@redhat.com>
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1940450
Upstream-status: N/A
This is based on upstream commit b3c818a47f ("Update linux headers to
5.11-rc2"), but has been reduced to the single hunk that is required
for the next patch (there were too many unrelated conflicts in the other
files for doing full backport of the original upstream commit).
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
linux-headers/linux/vfio.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/linux-headers/linux/vfio.h b/linux-headers/linux/vfio.h
index f660bd7bac..9c8810bef4 100644
--- a/linux-headers/linux/vfio.h
+++ b/linux-headers/linux/vfio.h
@@ -580,6 +580,7 @@ enum {
enum {
VFIO_CCW_IO_IRQ_INDEX,
VFIO_CCW_CRW_IRQ_INDEX,
+ VFIO_CCW_REQ_IRQ_INDEX,
VFIO_CCW_NUM_IRQS
};
--
2.27.0

104
SOURCES/kvm-memory-Revert-memory-accept-mismatching-sizes-in-mem.patch Normal file
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@ -0,0 +1,104 @@
From 13f4ebe4708f4f4dc20d710e475a42d520459860 Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Wed, 21 Apr 2021 22:30:03 -0400
Subject: [PATCH 4/7] memory: Revert "memory: accept mismatching sizes in
memory_region_access_valid"
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210421223006.19650-4-jmaloy@redhat.com>
Patchwork-id: 101480
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH v2 3/6] memory: Revert "memory: accept mismatching sizes in memory_region_access_valid"
Bugzilla: 1842478
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
From: "Michael S. Tsirkin" <mst@redhat.com>
Memory API documentation documents valid .min_access_size and .max_access_size
fields and explains that any access outside these boundaries is blocked.
This is what devices seem to assume.
However this is not what the implementation does: it simply
ignores the boundaries unless there's an "accepts" callback.
Naturally, this breaks a bunch of devices.
Revert to the documented behaviour.
Devices that want to allow any access can just drop the valid field,
or add the impl field to have accesses converted to appropriate
length.
Cc: qemu-stable@nongnu.org
Reviewed-by: Richard Henderson <rth@twiddle.net>
Fixes: CVE-2020-13754
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1842363
Fixes: a014ed07bd5a ("memory: accept mismatching sizes in memory_region_access_valid")
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20200610134731.1514409-1-mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit 5d971f9e672507210e77d020d89e0e89165c8fc9)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
memory.c | 29 +++++++++--------------------
1 file changed, 9 insertions(+), 20 deletions(-)
diff --git a/memory.c b/memory.c
index 5a4a80842d..0cfcb72a5a 100644
--- a/memory.c
+++ b/memory.c
@@ -1351,35 +1351,24 @@ bool memory_region_access_valid(MemoryRegion *mr,
bool is_write,
MemTxAttrs attrs)
{
- int access_size_min, access_size_max;
- int access_size, i;
-
- if (!mr->ops->valid.unaligned && (addr & (size - 1))) {
+ if (mr->ops->valid.accepts
+ && !mr->ops->valid.accepts(mr->opaque, addr, size, is_write, attrs)) {
return false;
}
- if (!mr->ops->valid.accepts) {
- return true;
- }
-
- access_size_min = mr->ops->valid.min_access_size;
- if (!mr->ops->valid.min_access_size) {
- access_size_min = 1;
+ if (!mr->ops->valid.unaligned && (addr & (size - 1))) {
+ return false;
}
- access_size_max = mr->ops->valid.max_access_size;
+ /* Treat zero as compatibility all valid */
if (!mr->ops->valid.max_access_size) {
- access_size_max = 4;
+ return true;
}
- access_size = MAX(MIN(size, access_size_max), access_size_min);
- for (i = 0; i < size; i += access_size) {
- if (!mr->ops->valid.accepts(mr->opaque, addr + i, access_size,
- is_write, attrs)) {
- return false;
- }
+ if (size > mr->ops->valid.max_access_size
+ || size < mr->ops->valid.min_access_size) {
+ return false;
}
-
return true;
}
--
2.27.0

301
SOURCES/kvm-net-check-if-the-file-descriptor-is-valid-before-usi.patch Normal file
View File

@ -0,0 +1,301 @@
From 512c7e92808dff66779f7421f1c17a081f18d7e6 Mon Sep 17 00:00:00 2001
From: Laurent Vivier <lvivier@redhat.com>
Date: Thu, 29 Jul 2021 04:56:46 -0400
Subject: [PATCH 13/14] net: check if the file descriptor is valid before using
it
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Laurent Vivier <lvivier@redhat.com>
Message-id: <20210726102337.6359-2-lvivier@redhat.com>
Patchwork-id: 101924
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 1/2] net: check if the file descriptor is valid before using it
Bugzilla: 1982134
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1982134
BRANCH: rhel-8.5.0
UPSTREAM: Merged
BREW: https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=38380653
qemu_set_nonblock() checks that the file descriptor can be used and, if
not, crashes QEMU. An assert() is used for that. The use of assert() is
used to detect programming error and the coredump will allow to debug
the problem.
But in the case of the tap device, this assert() can be triggered by
a misconfiguration by the user. At startup, it's not a real problem, but it
can also happen during the hot-plug of a new device, and here it's a
problem because we can crash a perfectly healthy system.
For instance:
# ip link add link virbr0 name macvtap0 type macvtap mode bridge
# ip link set macvtap0 up
# TAP=/dev/tap$(ip -o link show macvtap0 | cut -d: -f1)
# qemu-system-x86_64 -machine q35 -device pcie-root-port,id=pcie-root-port-0 -monitor stdio 9<> $TAP
(qemu) netdev_add type=tap,id=hostnet0,vhost=on,fd=9
(qemu) device_add driver=virtio-net-pci,netdev=hostnet0,id=net0,bus=pcie-root-port-0
(qemu) device_del net0
(qemu) netdev_del hostnet0
(qemu) netdev_add type=tap,id=hostnet1,vhost=on,fd=9
qemu-system-x86_64: .../util/oslib-posix.c:247: qemu_set_nonblock: Assertion `f != -1' failed.
Aborted (core dumped)
To avoid that, add a function, qemu_try_set_nonblock(), that allows to report the
problem without crashing.
In the same way, we also update the function for vhostfd in net_init_tap_one() and
for fd in net_init_socket() (both descriptors are provided by the user and can
be wrong).
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit 894022e616016fe81745753f14adfbd680a1c7ee)
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
include/qemu/sockets.h | 1 +
net/socket.c | 9 +++++--
net/tap.c | 25 +++++++++++++++---
util/oslib-posix.c | 26 +++++++++++++------
util/oslib-win32.c | 57 ++++++++++++++++++++++++------------------
5 files changed, 79 insertions(+), 39 deletions(-)
diff --git a/include/qemu/sockets.h b/include/qemu/sockets.h
index 57cd049d6e..7d1f813576 100644
--- a/include/qemu/sockets.h
+++ b/include/qemu/sockets.h
@@ -18,6 +18,7 @@ int qemu_accept(int s, struct sockaddr *addr, socklen_t *addrlen);
int socket_set_cork(int fd, int v);
int socket_set_nodelay(int fd);
void qemu_set_block(int fd);
+int qemu_try_set_nonblock(int fd);
void qemu_set_nonblock(int fd);
int socket_set_fast_reuse(int fd);
diff --git a/net/socket.c b/net/socket.c
index c92354049b..2d21fddd9c 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -725,13 +725,18 @@ int net_init_socket(const Netdev *netdev, const char *name,
}
if (sock->has_fd) {
- int fd;
+ int fd, ret;
fd = monitor_fd_param(cur_mon, sock->fd, errp);
if (fd == -1) {
return -1;
}
- qemu_set_nonblock(fd);
+ ret = qemu_try_set_nonblock(fd);
+ if (ret < 0) {
+ error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d",
+ name, fd);
+ return -1;
+ }
if (!net_socket_fd_init(peer, "socket", name, fd, 1, sock->mcast,
errp)) {
return -1;
diff --git a/net/tap.c b/net/tap.c
index 6207f61f84..41a20102fd 100644
--- a/net/tap.c
+++ b/net/tap.c
@@ -689,6 +689,8 @@ static void net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer,
}
if (vhostfdname) {
+ int ret;
+
vhostfd = monitor_fd_param(cur_mon, vhostfdname, &err);
if (vhostfd == -1) {
if (tap->has_vhostforce && tap->vhostforce) {
@@ -698,7 +700,12 @@ static void net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer,
}
return;
}
- qemu_set_nonblock(vhostfd);
+ ret = qemu_try_set_nonblock(vhostfd);
+ if (ret < 0) {
+ error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d",
+ name, fd);
+ return;
+ }
} else {
vhostfd = open("/dev/vhost-net", O_RDWR);
if (vhostfd < 0) {
@@ -766,6 +773,7 @@ int net_init_tap(const Netdev *netdev, const char *name,
Error *err = NULL;
const char *vhostfdname;
char ifname[128];
+ int ret = 0;
assert(netdev->type == NET_CLIENT_DRIVER_TAP);
tap = &netdev->u.tap;
@@ -795,7 +803,12 @@ int net_init_tap(const Netdev *netdev, const char *name,
return -1;
}
- qemu_set_nonblock(fd);
+ ret = qemu_try_set_nonblock(fd);
+ if (ret < 0) {
+ error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d",
+ name, fd);
+ return -1;
+ }
vnet_hdr = tap_probe_vnet_hdr(fd);
@@ -810,7 +823,6 @@ int net_init_tap(const Netdev *netdev, const char *name,
char **fds;
char **vhost_fds;
int nfds = 0, nvhosts = 0;
- int ret = 0;
if (tap->has_ifname || tap->has_script || tap->has_downscript ||
tap->has_vnet_hdr || tap->has_helper || tap->has_queues ||
@@ -843,7 +855,12 @@ int net_init_tap(const Netdev *netdev, const char *name,
goto free_fail;
}
- qemu_set_nonblock(fd);
+ ret = qemu_try_set_nonblock(fd);
+ if (ret < 0) {
+ error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d",
+ name, fd);
+ goto free_fail;
+ }
if (i == 0) {
vnet_hdr = tap_probe_vnet_hdr(fd);
diff --git a/util/oslib-posix.c b/util/oslib-posix.c
index 8f88e4dbe1..db70416dbb 100644
--- a/util/oslib-posix.c
+++ b/util/oslib-posix.c
@@ -240,25 +240,35 @@ void qemu_set_block(int fd)
assert(f != -1);
}
-void qemu_set_nonblock(int fd)
+int qemu_try_set_nonblock(int fd)
{
int f;
f = fcntl(fd, F_GETFL);
- assert(f != -1);
- f = fcntl(fd, F_SETFL, f | O_NONBLOCK);
-#ifdef __OpenBSD__
if (f == -1) {
+ return -errno;
+ }
+ if (fcntl(fd, F_SETFL, f | O_NONBLOCK) == -1) {
+#ifdef __OpenBSD__
/*
* Previous to OpenBSD 6.3, fcntl(F_SETFL) is not permitted on
* memory devices and sets errno to ENODEV.
* It's OK if we fail to set O_NONBLOCK on devices like /dev/null,
* because they will never block anyway.
*/
- assert(errno == ENODEV);
- }
-#else
- assert(f != -1);
+ if (errno == ENODEV) {
+ return 0;
+ }
#endif
+ return -errno;
+ }
+ return 0;
+}
+
+void qemu_set_nonblock(int fd)
+{
+ int f;
+ f = qemu_try_set_nonblock(fd);
+ assert(f == 0);
}
int socket_set_fast_reuse(int fd)
diff --git a/util/oslib-win32.c b/util/oslib-win32.c
index 3b49d27297..7eedbe5859 100644
--- a/util/oslib-win32.c
+++ b/util/oslib-win32.c
@@ -132,31 +132,6 @@ struct tm *localtime_r(const time_t *timep, struct tm *result)
}
#endif /* CONFIG_LOCALTIME_R */
-void qemu_set_block(int fd)
-{
- unsigned long opt = 0;
- WSAEventSelect(fd, NULL, 0);
- ioctlsocket(fd, FIONBIO, &opt);
-}
-
-void qemu_set_nonblock(int fd)
-{
- unsigned long opt = 1;
- ioctlsocket(fd, FIONBIO, &opt);
- qemu_fd_register(fd);
-}
-
-int socket_set_fast_reuse(int fd)
-{
- /* Enabling the reuse of an endpoint that was used by a socket still in
- * TIME_WAIT state is usually performed by setting SO_REUSEADDR. On Windows
- * fast reuse is the default and SO_REUSEADDR does strange things. So we
- * don't have to do anything here. More info can be found at:
- * http://msdn.microsoft.com/en-us/library/windows/desktop/ms740621.aspx */
- return 0;
-}
-
-
static int socket_error(void)
{
switch (WSAGetLastError()) {
@@ -233,6 +208,38 @@ static int socket_error(void)
}
}
+void qemu_set_block(int fd)
+{
+ unsigned long opt = 0;
+ WSAEventSelect(fd, NULL, 0);
+ ioctlsocket(fd, FIONBIO, &opt);
+}
+
+int qemu_try_set_nonblock(int fd)
+{
+ unsigned long opt = 1;
+ if (ioctlsocket(fd, FIONBIO, &opt) != NO_ERROR) {
+ return -socket_error();
+ }
+ qemu_fd_register(fd);
+ return 0;
+}
+
+void qemu_set_nonblock(int fd)
+{
+ (void)qemu_try_set_nonblock(fd);
+}
+
+int socket_set_fast_reuse(int fd)
+{
+ /* Enabling the reuse of an endpoint that was used by a socket still in
+ * TIME_WAIT state is usually performed by setting SO_REUSEADDR. On Windows
+ * fast reuse is the default and SO_REUSEADDR does strange things. So we
+ * don't have to do anything here. More info can be found at:
+ * http://msdn.microsoft.com/en-us/library/windows/desktop/ms740621.aspx */
+ return 0;
+}
+
int inet_aton(const char *cp, struct in_addr *ia)
{
uint32_t addr = inet_addr(cp);
--
2.27.0

221
SOURCES/kvm-net-detect-errors-from-probing-vnet-hdr-flag-for-TAP.patch Normal file
View File

@ -0,0 +1,221 @@
From 3475ea6598896edb689ca8ba6fb81781e2517b6f Mon Sep 17 00:00:00 2001
From: Laurent Vivier <lvivier@redhat.com>
Date: Thu, 29 Jul 2021 04:56:49 -0400
Subject: [PATCH 14/14] net: detect errors from probing vnet hdr flag for TAP
devices
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Laurent Vivier <lvivier@redhat.com>
Message-id: <20210726102337.6359-3-lvivier@redhat.com>
Patchwork-id: 101923
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 2/2] net: detect errors from probing vnet hdr flag for TAP devices
Bugzilla: 1982134
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
From: "Daniel P. Berrange" <berrange@redhat.com>
BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1982134
BRANCH: rhel-8.5.0
UPSTREAM: Merged
BREW: https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=38380653
When QEMU sets up a tap based network device backend, it mostly ignores errors
reported from various ioctl() calls it makes, assuming the TAP file descriptor
is valid. This assumption can easily be violated when the user is passing in a
pre-opened file descriptor. At best, the ioctls may fail with a -EBADF, but if
the user passes in a bogus FD number that happens to clash with a FD number that
QEMU has opened internally for another reason, a wide variety of errnos may
result, as the TUNGETIFF ioctl number may map to a completely different command
on a different type of file.
By ignoring all these errors, QEMU sets up a zombie network backend that will
never pass any data. Even worse, when QEMU shuts down, or that network backend
is hot-removed, it will close this bogus file descriptor, which could belong to
another QEMU device backend.
There's no obvious guaranteed reliable way to detect that a FD genuinely is a
TAP device, as opposed to a UNIX socket, or pipe, or something else. Checking
the errno from probing vnet hdr flag though, does catch the big common cases.
ie calling TUNGETIFF will return EBADF for an invalid FD, and ENOTTY when FD is
a UNIX socket, or pipe which catches accidental collisions with FDs used for
stdio, or monitor socket.
Previously the example below where bogus fd 9 collides with the FD used for the
chardev saw:
$ ./x86_64-softmmu/qemu-system-x86_64 -netdev tap,id=hostnet0,fd=9 \
-chardev socket,id=charchannel0,path=/tmp/qga,server,nowait \
-monitor stdio -vnc :0
qemu-system-x86_64: -netdev tap,id=hostnet0,fd=9: TUNGETIFF ioctl() failed: Inappropriate ioctl for device
TUNSETOFFLOAD ioctl() failed: Bad address
QEMU 2.9.1 monitor - type 'help' for more information
(qemu) Warning: netdev hostnet0 has no peer
which gives a running QEMU with a zombie network backend.
With this change applied we get an error message and QEMU immediately exits
before carrying on and making a bigger disaster:
$ ./x86_64-softmmu/qemu-system-x86_64 -netdev tap,id=hostnet0,fd=9 \
-chardev socket,id=charchannel0,path=/tmp/qga,server,nowait \
-monitor stdio -vnc :0
qemu-system-x86_64: -netdev tap,id=hostnet0,vhost=on,fd=9: Unable to query TUNGETIFF on FD 9: Inappropriate ioctl for device
Reported-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Tested-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-id: 20171027085548.3472-1-berrange@redhat.com
[lv: to simplify, don't check on EINVAL with TUNGETIFF as it exists since v2.6.27]
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit e7b347d0bf640adb1c998d317eaf44d2d7cbd973)
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
net/tap-bsd.c | 2 +-
net/tap-linux.c | 8 +++++---
net/tap-solaris.c | 2 +-
net/tap-stub.c | 2 +-
net/tap.c | 25 ++++++++++++++++++++-----
net/tap_int.h | 2 +-
6 files changed, 29 insertions(+), 12 deletions(-)
diff --git a/net/tap-bsd.c b/net/tap-bsd.c
index a5c3707f80..77aaf674b1 100644
--- a/net/tap-bsd.c
+++ b/net/tap-bsd.c
@@ -211,7 +211,7 @@ void tap_set_sndbuf(int fd, const NetdevTapOptions *tap, Error **errp)
{
}
-int tap_probe_vnet_hdr(int fd)
+int tap_probe_vnet_hdr(int fd, Error **errp)
{
return 0;
}
diff --git a/net/tap-linux.c b/net/tap-linux.c
index e0dd442ee3..b0635e9e32 100644
--- a/net/tap-linux.c
+++ b/net/tap-linux.c
@@ -147,13 +147,15 @@ void tap_set_sndbuf(int fd, const NetdevTapOptions *tap, Error **errp)
}
}
-int tap_probe_vnet_hdr(int fd)
+int tap_probe_vnet_hdr(int fd, Error **errp)
{
struct ifreq ifr;
if (ioctl(fd, TUNGETIFF, &ifr) != 0) {
- error_report("TUNGETIFF ioctl() failed: %s", strerror(errno));
- return 0;
+ /* TUNGETIFF is available since kernel v2.6.27 */
+ error_setg_errno(errp, errno,
+ "Unable to query TUNGETIFF on FD %d", fd);
+ return -1;
}
return ifr.ifr_flags & IFF_VNET_HDR;
diff --git a/net/tap-solaris.c b/net/tap-solaris.c
index 4725d2314e..ae2ba68284 100644
--- a/net/tap-solaris.c
+++ b/net/tap-solaris.c
@@ -206,7 +206,7 @@ void tap_set_sndbuf(int fd, const NetdevTapOptions *tap, Error **errp)
{
}
-int tap_probe_vnet_hdr(int fd)
+int tap_probe_vnet_hdr(int fd, Error **errp)
{
return 0;
}
diff --git a/net/tap-stub.c b/net/tap-stub.c
index a9ab8f8293..de525a2e69 100644
--- a/net/tap-stub.c
+++ b/net/tap-stub.c
@@ -37,7 +37,7 @@ void tap_set_sndbuf(int fd, const NetdevTapOptions *tap, Error **errp)
{
}
-int tap_probe_vnet_hdr(int fd)
+int tap_probe_vnet_hdr(int fd, Error **errp)
{
return 0;
}
diff --git a/net/tap.c b/net/tap.c
index 41a20102fd..b37ccae00c 100644
--- a/net/tap.c
+++ b/net/tap.c
@@ -597,7 +597,11 @@ int net_init_bridge(const Netdev *netdev, const char *name,
}
qemu_set_nonblock(fd);
- vnet_hdr = tap_probe_vnet_hdr(fd);
+ vnet_hdr = tap_probe_vnet_hdr(fd, errp);
+ if (vnet_hdr < 0) {
+ close(fd);
+ return -1;
+ }
s = net_tap_fd_init(peer, "bridge", name, fd, vnet_hdr);
snprintf(s->nc.info_str, sizeof(s->nc.info_str), "helper=%s,br=%s", helper,
@@ -810,7 +814,11 @@ int net_init_tap(const Netdev *netdev, const char *name,
return -1;
}
- vnet_hdr = tap_probe_vnet_hdr(fd);
+ vnet_hdr = tap_probe_vnet_hdr(fd, errp);
+ if (vnet_hdr < 0) {
+ close(fd);
+ return -1;
+ }
net_init_tap_one(tap, peer, "tap", name, NULL,
script, downscript,
@@ -863,8 +871,11 @@ int net_init_tap(const Netdev *netdev, const char *name,
}
if (i == 0) {
- vnet_hdr = tap_probe_vnet_hdr(fd);
- } else if (vnet_hdr != tap_probe_vnet_hdr(fd)) {
+ vnet_hdr = tap_probe_vnet_hdr(fd, errp);
+ if (vnet_hdr < 0) {
+ goto free_fail;
+ }
+ } else if (vnet_hdr != tap_probe_vnet_hdr(fd, NULL)) {
error_setg(errp,
"vnet_hdr not consistent across given tap fds");
ret = -1;
@@ -909,7 +920,11 @@ free_fail:
}
qemu_set_nonblock(fd);
- vnet_hdr = tap_probe_vnet_hdr(fd);
+ vnet_hdr = tap_probe_vnet_hdr(fd, errp);
+ if (vnet_hdr < 0) {
+ close(fd);
+ return -1;
+ }
net_init_tap_one(tap, peer, "bridge", name, ifname,
script, downscript, vhostfdname,
diff --git a/net/tap_int.h b/net/tap_int.h
index e3194b23f4..225a49ea48 100644
--- a/net/tap_int.h
+++ b/net/tap_int.h
@@ -34,7 +34,7 @@ int tap_open(char *ifname, int ifname_size, int *vnet_hdr,
ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen);
void tap_set_sndbuf(int fd, const NetdevTapOptions *tap, Error **errp);
-int tap_probe_vnet_hdr(int fd);
+int tap_probe_vnet_hdr(int fd, Error **errp);
int tap_probe_vnet_hdr_len(int fd, int len);
int tap_probe_has_ufo(int fd);
void tap_fd_set_offload(int fd, int csum, int tso4, int tso6, int ecn, int ufo);
--
2.27.0

50
SOURCES/kvm-net-forbid-the-reentrant-RX.patch Normal file
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@ -0,0 +1,50 @@
From 1e01e2f96fd5e903394eab59365d5363394c8b18 Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Tue, 13 Apr 2021 18:59:12 -0400
Subject: [PATCH 3/5] net: forbid the reentrant RX
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210413185912.3811035-2-jmaloy@redhat.com>
Patchwork-id: 101467
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 1/1] net: forbid the reentrant RX
Bugzilla: 1859175
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Thomas Huth <thuth@redhat.com>
RH-Acked-by: Xiao Wang <jasowang@redhat.com>
From: Jason Wang <jasowang@redhat.com>
The memory API allows DMA into NIC's MMIO area. This means the NIC's
RX routine must be reentrant. Instead of auditing all the NIC, we can
simply detect the reentrancy and return early. The queue->delivering
is set and cleared by qemu_net_queue_deliver() for other queue helpers
to know whether the delivering in on going (NIC's receive is being
called). We can check it and return early in qemu_net_queue_flush() to
forbid reentrant RX.
Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit 22dc8663d9fc7baa22100544c600b6285a63c7a3)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
net/queue.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/net/queue.c b/net/queue.c
index 61276ca4be..c679d79f4b 100644
--- a/net/queue.c
+++ b/net/queue.c
@@ -250,6 +250,9 @@ void qemu_net_queue_purge(NetQueue *queue, NetClientState *from)
bool qemu_net_queue_flush(NetQueue *queue)
{
+ if (queue->delivering)
+ return false;
+
while (!QTAILQ_EMPTY(&queue->packets)) {
NetPacket *packet;
int ret;
--
2.27.0

187
SOURCES/kvm-net-introduce-qemu_receive_packet.patch Normal file
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@ -0,0 +1,187 @@
From 89732bf03b26daaebbd3e6e031e79459ae3f77e1 Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Tue, 29 Jun 2021 03:42:39 -0400
Subject: [PATCH 1/9] net: introduce qemu_receive_packet()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210629034247.3286477-2-jmaloy@redhat.com>
Patchwork-id: 101785
O-Subject: [RHEL-8.4.0.z qemu-kvm PATCH v2 1/9] net: introduce qemu_receive_packet()
Bugzilla: 1932917
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Thomas Huth <thuth@redhat.com>
From: Jason Wang <jasowang@redhat.com>
Some NIC supports loopback mode and this is done by calling
nc->info->receive() directly which in fact suppresses the effort of
reentrancy check that is done in qemu_net_queue_send().
Unfortunately we can't use qemu_net_queue_send() here since for
loopback there's no sender as peer, so this patch introduce a
qemu_receive_packet() which is used for implementing loopback mode
for a NIC with this check.
NIC that supports loopback mode will be converted to this helper.
This is intended to address CVE-2021-3416.
Cc: Prasad J Pandit <ppandit@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit 705df5466c98f3efdd2b68d3b31dad86858acad7)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
include/net/net.h | 5 +++++
include/net/queue.h | 8 ++++++++
net/net.c | 38 +++++++++++++++++++++++++++++++-------
net/queue.c | 22 ++++++++++++++++++++++
4 files changed, 66 insertions(+), 7 deletions(-)
diff --git a/include/net/net.h b/include/net/net.h
index e175ba9677..1b32a8aaec 100644
--- a/include/net/net.h
+++ b/include/net/net.h
@@ -142,12 +142,17 @@ void *qemu_get_nic_opaque(NetClientState *nc);
void qemu_del_net_client(NetClientState *nc);
typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque);
void qemu_foreach_nic(qemu_nic_foreach func, void *opaque);
+int qemu_can_receive_packet(NetClientState *nc);
int qemu_can_send_packet(NetClientState *nc);
ssize_t qemu_sendv_packet(NetClientState *nc, const struct iovec *iov,
int iovcnt);
ssize_t qemu_sendv_packet_async(NetClientState *nc, const struct iovec *iov,
int iovcnt, NetPacketSent *sent_cb);
ssize_t qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size);
+ssize_t qemu_receive_packet(NetClientState *nc, const uint8_t *buf, int size);
+ssize_t qemu_receive_packet_iov(NetClientState *nc,
+ const struct iovec *iov,
+ int iovcnt);
ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size);
ssize_t qemu_send_packet_async(NetClientState *nc, const uint8_t *buf,
int size, NetPacketSent *sent_cb);
diff --git a/include/net/queue.h b/include/net/queue.h
index c0269bb1dc..9f2f289d77 100644
--- a/include/net/queue.h
+++ b/include/net/queue.h
@@ -55,6 +55,14 @@ void qemu_net_queue_append_iov(NetQueue *queue,
void qemu_del_net_queue(NetQueue *queue);
+ssize_t qemu_net_queue_receive(NetQueue *queue,
+ const uint8_t *data,
+ size_t size);
+
+ssize_t qemu_net_queue_receive_iov(NetQueue *queue,
+ const struct iovec *iov,
+ int iovcnt);
+
ssize_t qemu_net_queue_send(NetQueue *queue,
NetClientState *sender,
unsigned flags,
diff --git a/net/net.c b/net/net.c
index 84aa6d8d00..d0b651ca95 100644
--- a/net/net.c
+++ b/net/net.c
@@ -516,6 +516,17 @@ int qemu_set_vnet_be(NetClientState *nc, bool is_be)
#endif
}
+int qemu_can_receive_packet(NetClientState *nc)
+{
+ if (nc->receive_disabled) {
+ return 0;
+ } else if (nc->info->can_receive &&
+ !nc->info->can_receive(nc)) {
+ return 0;
+ }
+ return 1;
+}
+
int qemu_can_send_packet(NetClientState *sender)
{
int vm_running = runstate_is_running();
@@ -528,13 +539,7 @@ int qemu_can_send_packet(NetClientState *sender)
return 1;
}
- if (sender->peer->receive_disabled) {
- return 0;
- } else if (sender->peer->info->can_receive &&
- !sender->peer->info->can_receive(sender->peer)) {
- return 0;
- }
- return 1;
+ return qemu_can_receive_packet(sender->peer);
}
static ssize_t filter_receive_iov(NetClientState *nc,
@@ -667,6 +672,25 @@ ssize_t qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size)
return qemu_send_packet_async(nc, buf, size, NULL);
}
+ssize_t qemu_receive_packet(NetClientState *nc, const uint8_t *buf, int size)
+{
+ if (!qemu_can_receive_packet(nc)) {
+ return 0;
+ }
+
+ return qemu_net_queue_receive(nc->incoming_queue, buf, size);
+}
+
+ssize_t qemu_receive_packet_iov(NetClientState *nc, const struct iovec *iov,
+ int iovcnt)
+{
+ if (!qemu_can_receive_packet(nc)) {
+ return 0;
+ }
+
+ return qemu_net_queue_receive_iov(nc->incoming_queue, iov, iovcnt);
+}
+
ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size)
{
return qemu_send_packet_async_with_flags(nc, QEMU_NET_PACKET_FLAG_RAW,
diff --git a/net/queue.c b/net/queue.c
index c679d79f4b..5f0f9ffcaf 100644
--- a/net/queue.c
+++ b/net/queue.c
@@ -182,6 +182,28 @@ static ssize_t qemu_net_queue_deliver_iov(NetQueue *queue,
return ret;
}
+ssize_t qemu_net_queue_receive(NetQueue *queue,
+ const uint8_t *data,
+ size_t size)
+{
+ if (queue->delivering) {
+ return 0;
+ }
+
+ return qemu_net_queue_deliver(queue, NULL, 0, data, size);
+}
+
+ssize_t qemu_net_queue_receive_iov(NetQueue *queue,
+ const struct iovec *iov,
+ int iovcnt)
+{
+ if (queue->delivering) {
+ return 0;
+ }
+
+ return qemu_net_queue_deliver_iov(queue, NULL, 0, iov, iovcnt);
+}
+
ssize_t qemu_net_queue_send(NetQueue *queue,
NetClientState *sender,
unsigned flags,
--
2.27.0

59
SOURCES/kvm-net-remove-an-assert-call-in-eth_get_gso_type.patch Normal file
View File

@ -0,0 +1,59 @@
From b7de63e72c479df42c324c058a487517210fa069 Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Tue, 13 Apr 2021 19:21:50 -0400
Subject: [PATCH 1/5] net: remove an assert call in eth_get_gso_type
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210413192150.3817133-2-jmaloy@redhat.com>
Patchwork-id: 101469
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 1/1] net: remove an assert call in eth_get_gso_type
Bugzilla: 1892350
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Xiao Wang <jasowang@redhat.com>
From: Prasad J Pandit <pjp@fedoraproject.org>
eth_get_gso_type() routine returns segmentation offload type based on
L3 protocol type. It calls g_assert_not_reached if L3 protocol is
unknown, making the following return statement unreachable. Remove the
g_assert call, it maybe triggered by a guest user.
Reported-by: Gaoning Pan <pgn@zju.edu.cn>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit 7564bf7701f00214cdc8a678a9f7df765244def1)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
net/eth.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/eth.c b/net/eth.c
index 0c1d413ee2..1e0821c5f8 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -16,6 +16,7 @@
*/
#include "qemu/osdep.h"
+#include "qemu/log.h"
#include "net/eth.h"
#include "net/checksum.h"
#include "net/tap.h"
@@ -71,9 +72,8 @@ eth_get_gso_type(uint16_t l3_proto, uint8_t *l3_hdr, uint8_t l4proto)
return VIRTIO_NET_HDR_GSO_TCPV6 | ecn_state;
}
}
-
- /* Unsupported offload */
- g_assert_not_reached();
+ qemu_log_mask(LOG_UNIMP, "%s: probably not GSO frame, "
+ "unknown L3 protocol: 0x%04"PRIx16"\n", __func__, l3_proto);
return VIRTIO_NET_HDR_GSO_NONE | ecn_state;
}
--
2.27.0

50
SOURCES/kvm-pc-bios-s390-ccw-break-loop-if-a-null-block-number-i.patch Normal file
View File

@ -0,0 +1,50 @@
From 56ae2d8a1ee3a35e2eed4f4baa61f97184189b47 Mon Sep 17 00:00:00 2001
From: Thomas Huth <thuth@redhat.com>
Date: Tue, 18 May 2021 13:51:24 -0400
Subject: [PATCH 4/5] pc-bios/s390-ccw: break loop if a null block number is
reached
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Thomas Huth <thuth@redhat.com>
Message-id: <20210518135125.191329-3-thuth@redhat.com>
Patchwork-id: 101549
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 2/3] pc-bios/s390-ccw: break loop if a null block number is reached
Bugzilla: 1942880
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: David Hildenbrand <david@redhat.com>
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
Break the loop if `cur_block_nr` is a null block number because this
means that the end of chunk is reached. In this case we will try to
boot the default entry.
Fixes: ba831b25262a ("s390-ccw: read stage2 boot loader data to find menu")
Reviewed-by: Collin Walling <walling@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Message-Id: <20200924085926.21709-3-mhartmay@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit 468184ec9024f4f7b55247f70ec57554e8a500d7)
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
pc-bios/s390-ccw/bootmap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/pc-bios/s390-ccw/bootmap.c b/pc-bios/s390-ccw/bootmap.c
index bb6e003270..624f524331 100644
--- a/pc-bios/s390-ccw/bootmap.c
+++ b/pc-bios/s390-ccw/bootmap.c
@@ -192,7 +192,7 @@ static int eckd_get_boot_menu_index(block_number_t s1b_block_nr)
for (i = 0; i < STAGE2_BLK_CNT_MAX; i++) {
cur_block_nr = eckd_block_num(&s1b->seek[i].chs);
- if (!cur_block_nr) {
+ if (!cur_block_nr || is_null_block_number(cur_block_nr)) {
break;
}
--
2.27.0

48
SOURCES/kvm-pc-bios-s390-ccw-don-t-try-to-read-the-next-block-if.patch Normal file
View File

@ -0,0 +1,48 @@
From 52ba1903b2c8ce69e8cd1de2a78c2c63cc60383b Mon Sep 17 00:00:00 2001
From: Thomas Huth <thuth@redhat.com>
Date: Tue, 18 May 2021 13:51:25 -0400
Subject: [PATCH 5/5] pc-bios/s390-ccw: don't try to read the next block if end
of chunk is reached
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Thomas Huth <thuth@redhat.com>
Message-id: <20210518135125.191329-4-thuth@redhat.com>
Patchwork-id: 101550
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 3/3] pc-bios/s390-ccw: don't try to read the next block if end of chunk is reached
Bugzilla: 1942880
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: David Hildenbrand <david@redhat.com>
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
Don't read the block if a null block number is reached, because this means that
the end of chunk is reached.
Reviewed-by: Collin Walling <walling@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Message-Id: <20210416074736.17409-1-mhartmay@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit a6625d38cce3901a7c1cba069f0abcf743a293f1)
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
pc-bios/s390-ccw/bootmap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/pc-bios/s390-ccw/bootmap.c b/pc-bios/s390-ccw/bootmap.c
index 624f524331..8458b15cb6 100644
--- a/pc-bios/s390-ccw/bootmap.c
+++ b/pc-bios/s390-ccw/bootmap.c
@@ -212,7 +212,7 @@ static int eckd_get_boot_menu_index(block_number_t s1b_block_nr)
next_block_nr = eckd_block_num(&s1b->seek[i + 1].chs);
}
- if (next_block_nr) {
+ if (next_block_nr && !is_null_block_number(next_block_nr)) {
read_block(next_block_nr, s2_next_blk,
"Cannot read stage2 boot loader");
}
--
2.27.0

51
SOURCES/kvm-pc-bios-s390-ccw-fix-off-by-one-error.patch Normal file
View File

@ -0,0 +1,51 @@
From 0e9bdb960045f98d70f765bbb585f1647e5fea08 Mon Sep 17 00:00:00 2001
From: Thomas Huth <thuth@redhat.com>
Date: Tue, 18 May 2021 13:51:23 -0400
Subject: [PATCH 3/5] pc-bios/s390-ccw: fix off-by-one error
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Thomas Huth <thuth@redhat.com>
Message-id: <20210518135125.191329-2-thuth@redhat.com>
Patchwork-id: 101548
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 1/3] pc-bios/s390-ccw: fix off-by-one error
Bugzilla: 1942880
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: David Hildenbrand <david@redhat.com>
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
This error takes effect when the magic value "zIPL" is located at the
end of a block. For example if s2_cur_blk = 0x7fe18000 and the magic
value "zIPL" is located at 0x7fe18ffc - 0x7fe18fff.
Fixes: ba831b25262a ("s390-ccw: read stage2 boot loader data to find menu")
Reviewed-by: Collin Walling <walling@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Message-Id: <20200924085926.21709-2-mhartmay@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
[thuth: Use "<= ... - 4" instead of "< ... - 3"]
Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit 5f97ba0c74ccace0a4014460de9751ff3c6f454a)
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
pc-bios/s390-ccw/bootmap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/pc-bios/s390-ccw/bootmap.c b/pc-bios/s390-ccw/bootmap.c
index e91ea719ff..bb6e003270 100644
--- a/pc-bios/s390-ccw/bootmap.c
+++ b/pc-bios/s390-ccw/bootmap.c
@@ -163,7 +163,7 @@ static bool find_zipl_boot_menu_banner(int *offset)
int i;
/* Menu banner starts with "zIPL" */
- for (i = 0; i < virtio_get_block_size() - 4; i++) {
+ for (i = 0; i <= virtio_get_block_size() - 4; i++) {
if (magic_match(s2_cur_blk + i, ZIPL_MAGIC_EBCDIC)) {
*offset = i;
return true;
--
2.27.0

54
SOURCES/kvm-pcnet-switch-to-use-qemu_receive_packet-for-loopback.patch Normal file
View File

@ -0,0 +1,54 @@
From b36a9259e085b4d32532d896e485889181b130ae Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Tue, 29 Jun 2021 03:42:45 -0400
Subject: [PATCH 7/9] pcnet: switch to use qemu_receive_packet() for loopback
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210629034247.3286477-8-jmaloy@redhat.com>
Patchwork-id: 101791
O-Subject: [RHEL-8.4.0.z qemu-kvm PATCH v2 7/9] pcnet: switch to use qemu_receive_packet() for loopback
Bugzilla: 1932917
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Thomas Huth <thuth@redhat.com>
From: Alexander Bulekov <alxndr@bu.edu>
This patch switches to use qemu_receive_packet() which can detect
reentrancy and return early.
This is intended to address CVE-2021-3416.
Cc: Prasad J Pandit <ppandit@redhat.com>
Cc: qemu-stable@nongnu.org
Buglink: https://bugs.launchpad.net/qemu/+bug/1917085
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit 99ccfaa1edafd79f7a3a0ff7b58ae4da7c514928)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/net/pcnet.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/net/pcnet.c b/hw/net/pcnet.c
index f3f18d8598..dcd3fc4948 100644
--- a/hw/net/pcnet.c
+++ b/hw/net/pcnet.c
@@ -1250,7 +1250,7 @@ txagain:
if (BCR_SWSTYLE(s) == 1)
add_crc = !GET_FIELD(tmd.status, TMDS, NOFCS);
s->looptest = add_crc ? PCNET_LOOPTEST_CRC : PCNET_LOOPTEST_NOCRC;
- pcnet_receive(qemu_get_queue(s->nic), s->buffer, s->xmit_pos);
+ qemu_receive_packet(qemu_get_queue(s->nic), s->buffer, s->xmit_pos);
s->looptest = 0;
} else {
if (s->nic) {
--
2.27.0

73
SOURCES/kvm-qemu-img-convert-Don-t-pre-zero-images.patch Normal file
View File

@ -0,0 +1,73 @@
From eea45924903f03dc6d8f20576be0a4a84d5acce4 Mon Sep 17 00:00:00 2001
From: Kevin Wolf <kwolf@redhat.com>
Date: Wed, 10 Feb 2021 10:16:11 -0500
Subject: [PATCH 4/5] qemu-img convert: Don't pre-zero images
RH-Author: Kevin Wolf <kwolf@redhat.com>
Message-id: <20210210101611.137928-2-kwolf@redhat.com>
Patchwork-id: 101030
O-Subject: [RHEL-8.4.0 qemu-kvm PATCH 1/1] qemu-img convert: Don't pre-zero images
Bugzilla: 1855250
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
RH-Acked-by: Max Reitz <mreitz@redhat.com>
Since commit 5a37b60a61c, qemu-img create will pre-zero the target image
if it isn't already zero-initialised (most importantly, for host block
devices, but also iscsi etc.), so that writing explicit zeros wouldn't
be necessary later.
This could speed up the operation significantly, in particular when the
source image file was only sparsely populated. However, it also means
that some block are written twice: Once when pre-zeroing them, and then
when they are overwritten with actual data. On a full image, the
pre-zeroing is wasted work because everything will be overwritten.
In practice, write_zeroes typically turns out faster than writing
explicit zero buffers, but slow enough that first zeroing everything and
then overwriting parts can be a significant net loss.
Meanwhile, qemu-img convert was rewritten in 690c7301600 and zero blocks
are now written to the target using bdrv_co_pwrite_zeroes() if the
target could be pre-zeroed. This way we already make use of the faster
write_zeroes operation, but avoid writing any blocks twice.
Remove the pre-zeroing because these days this former optimisation has
actually turned into a pessimisation in the common case.
Reported-by: Nir Soffer <nsoffer@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200622151203.35624-1-kwolf@redhat.com>
Tested-by: Nir Soffer <nsoffer@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit edafc70c0c8510862f2f213a3acf7067113bcd08)
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
qemu-img.c | 9 ---------
1 file changed, 9 deletions(-)
diff --git a/qemu-img.c b/qemu-img.c
index a27ad70851..b10dc5129b 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -2029,15 +2029,6 @@ static int convert_do_copy(ImgConvertState *s)
s->has_zero_init = false;
}
- if (!s->has_zero_init && !s->target_has_backing &&
- bdrv_can_write_zeroes_with_unmap(blk_bs(s->target)))
- {
- ret = blk_make_zero(s->target, BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK);
- if (ret == 0) {
- s->has_zero_init = true;
- }
- }
-
/* Allocate buffer for copied data. For compressed images, only one cluster
* can be copied at a time. */
if (s->compressed) {
--
2.27.0

176
SOURCES/kvm-qga-add-reset-argument-to-ssh-add-authorized-keys.patch Normal file
View File

@ -0,0 +1,176 @@
From 7f8888f2c53060c4536856859d5ea94d23ea9e45 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
Date: Thu, 29 Jul 2021 04:55:54 -0400
Subject: [PATCH 03/14] qga: add *reset argument to ssh-add-authorized-keys
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: <20210609100615.2501448-4-marcandre.lureau@redhat.com>
Patchwork-id: 101689
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 3/4] qga: add *reset argument to ssh-add-authorized-keys
Bugzilla: 1967716
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Michal Privoznik <mprivozn@redhat.com>
From: Michael Roth <michael.roth@amd.com>
I prefer 'reset' over 'clear', since 'clear' and keys may have some
other relations or meaning.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
*fix disallowed g_assert* usage reported by checkpatch
Signed-off-by: Michael Roth <michael.roth@amd.com>
(cherry picked from commit 0e3c94758e3851f0ab30d2a1e63a73284499775d)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
qga/commands-posix-ssh.c | 53 ++++++++++++++++++++++++++++++++++++----
qga/qapi-schema.json | 3 ++-
2 files changed, 50 insertions(+), 6 deletions(-)
diff --git a/qga/commands-posix-ssh.c b/qga/commands-posix-ssh.c
index f74d89679c..362c9e8816 100644
--- a/qga/commands-posix-ssh.c
+++ b/qga/commands-posix-ssh.c
@@ -168,6 +168,7 @@ read_authkeys(const char *path, Error **errp)
void
qmp_guest_ssh_add_authorized_keys(const char *username, strList *keys,
+ bool has_reset, bool reset,
Error **errp)
{
g_autofree struct passwd *p = NULL;
@@ -178,6 +179,7 @@ qmp_guest_ssh_add_authorized_keys(const char *username, strList *keys,
size_t nkeys, nauthkeys;
ERRP_GUARD();
+ reset = has_reset && reset;
if (!check_openssh_pub_keys(keys, &nkeys, errp)) {
return;
@@ -191,7 +193,9 @@ qmp_guest_ssh_add_authorized_keys(const char *username, strList *keys,
ssh_path = g_build_filename(p->pw_dir, ".ssh", NULL);
authkeys_path = g_build_filename(ssh_path, "authorized_keys", NULL);
- authkeys = read_authkeys(authkeys_path, NULL);
+ if (!reset) {
+ authkeys = read_authkeys(authkeys_path, NULL);
+ }
if (authkeys == NULL) {
if (!g_file_test(ssh_path, G_FILE_TEST_IS_DIR) &&
!mkdir_for_user(ssh_path, p, 0700, errp)) {
@@ -318,7 +322,7 @@ test_invalid_user(void)
{
Error *err = NULL;
- qmp_guest_ssh_add_authorized_keys("", NULL, &err);
+ qmp_guest_ssh_add_authorized_keys("", NULL, FALSE, FALSE, &err);
error_free_or_abort(&err);
qmp_guest_ssh_remove_authorized_keys("", NULL, &err);
@@ -333,7 +337,8 @@ test_invalid_key(void)
};
Error *err = NULL;
- qmp_guest_ssh_add_authorized_keys(g_get_user_name(), &key, &err);
+ qmp_guest_ssh_add_authorized_keys(g_get_user_name(), &key,
+ FALSE, FALSE, &err);
error_free_or_abort(&err);
qmp_guest_ssh_remove_authorized_keys(g_get_user_name(), &key, &err);
@@ -346,13 +351,17 @@ test_add_keys(void)
Error *err = NULL;
qmp_guest_ssh_add_authorized_keys(g_get_user_name(),
- (strList *)&test_key2, &err);
+ (strList *)&test_key2,
+ FALSE, FALSE,
+ &err);
g_assert(err == NULL);
test_authorized_keys_equal("algo key2 comments");
qmp_guest_ssh_add_authorized_keys(g_get_user_name(),
- (strList *)&test_key1_2, &err);
+ (strList *)&test_key1_2,
+ FALSE, FALSE,
+ &err);
g_assert(err == NULL);
/* key2 came first, and should'nt be duplicated */
@@ -360,6 +369,39 @@ test_add_keys(void)
"algo key1 comments");
}
+static void
+test_add_reset_keys(void)
+{
+ Error *err = NULL;
+
+ qmp_guest_ssh_add_authorized_keys(g_get_user_name(),
+ (strList *)&test_key1_2,
+ FALSE, FALSE,
+ &err);
+ g_assert(err == NULL);
+
+ /* reset with key2 only */
+ test_authorized_keys_equal("algo key1 comments\n"
+ "algo key2 comments");
+
+ qmp_guest_ssh_add_authorized_keys(g_get_user_name(),
+ (strList *)&test_key2,
+ TRUE, TRUE,
+ &err);
+ g_assert(err == NULL);
+
+ test_authorized_keys_equal("algo key2 comments");
+
+ /* empty should clear file */
+ qmp_guest_ssh_add_authorized_keys(g_get_user_name(),
+ (strList *)NULL,
+ TRUE, TRUE,
+ &err);
+ g_assert(err == NULL);
+
+ test_authorized_keys_equal("");
+}
+
static void
test_remove_keys(void)
{
@@ -393,6 +435,7 @@ int main(int argc, char *argv[])
g_test_add_func("/qga/ssh/invalid_user", test_invalid_user);
g_test_add_func("/qga/ssh/invalid_key", test_invalid_key);
g_test_add_func("/qga/ssh/add_keys", test_add_keys);
+ g_test_add_func("/qga/ssh/add_reset_keys", test_add_reset_keys);
g_test_add_func("/qga/ssh/remove_keys", test_remove_keys);
return g_test_run();
diff --git a/qga/qapi-schema.json b/qga/qapi-schema.json
index 3b85f5a03f..a70ea5da77 100644
--- a/qga/qapi-schema.json
+++ b/qga/qapi-schema.json
@@ -1279,6 +1279,7 @@
#
# @username: the user account to add the authorized keys
# @keys: the public keys to add (in OpenSSH/sshd(8) authorized_keys format)
+# @reset: ignore the existing content, set it with the given keys only
#
# Append public keys to user .ssh/authorized_keys on Unix systems (not
# implemented for other systems).
@@ -1288,7 +1289,7 @@
# Since: 5.2
##
{ 'command': 'guest-ssh-add-authorized-keys',
- 'data': { 'username': 'str', 'keys': ['str'] },
+ 'data': { 'username': 'str', 'keys': ['str'], '*reset': 'bool' },
'if': 'defined(CONFIG_POSIX)' }
##
--
2.27.0

525
SOURCES/kvm-qga-add-ssh-add-remove-authorized-keys.patch Normal file
View File

@ -0,0 +1,525 @@
From 4be6cb23235b29d6ce450c2dacaef09c52d1aeea Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
Date: Thu, 29 Jul 2021 04:55:52 -0400
Subject: [PATCH 02/14] qga: add ssh-{add, remove}-authorized-keys
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: <20210609100615.2501448-3-marcandre.lureau@redhat.com>
Patchwork-id: 101688
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 2/4] qga: add ssh-{add, remove}-authorized-keys
Bugzilla: 1967716
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Michal Privoznik <mprivozn@redhat.com>
From: Marc-André Lureau <marcandre.lureau@redhat.com>
Add new commands to add and remove SSH public keys from
~/.ssh/authorized_keys.
I took a different approach for testing, including the unit tests right
with the code. I wanted to overwrite the function to get the user
details, I couldn't easily do that over QMP. Furthermore, I prefer
having unit tests very close to the code, and unit files that are domain
specific (commands-posix is too crowded already). FWIW, that
coding/testing style is Rust-style (where tests can or should even be
part of the documentation!).
Fixes:
https://bugzilla.redhat.com/show_bug.cgi?id=1885332
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
*squashed in fix-ups for setting file ownership and use of QAPI
conditionals for CONFIG_POSIX instead of stub definitions
*disable qga-ssh-test for now due to G_TEST_OPTION_ISOLATE_DIRS
triggering leak detector in build-oss-fuzz
*fix disallowed g_assert* usage reported by checkpatch
Signed-off-by: Michael Roth <michael.roth@amd.com>
(cherry picked from commit 8d769ec777dccbff199711aba43aa6297fe4a0e0)
[ Fixes trivial backport conflicts and use Makefile.objs build-sys ]
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
qga/Makefile.objs | 2 +-
qga/commands-posix-ssh.c | 407 +++++++++++++++++++++++++++++++++++++++
qga/qapi-schema.json | 35 ++++
3 files changed, 443 insertions(+), 1 deletion(-)
create mode 100644 qga/commands-posix-ssh.c
diff --git a/qga/Makefile.objs b/qga/Makefile.objs
index 80e6bb3c2e..c8da634db0 100644
--- a/qga/Makefile.objs
+++ b/qga/Makefile.objs
@@ -1,6 +1,6 @@
commands-posix.o-libs := $(LIBUDEV_LIBS)
qga-obj-y = commands.o guest-agent-command-state.o main.o
-qga-obj-$(CONFIG_POSIX) += commands-posix.o channel-posix.o
+qga-obj-$(CONFIG_POSIX) += commands-posix.o channel-posix.o commands-posix-ssh.o
qga-obj-$(CONFIG_WIN32) += commands-win32.o channel-win32.o service-win32.o
qga-obj-$(CONFIG_WIN32) += vss-win32.o
qga-obj-y += qapi-generated/qga-qapi-types.o qapi-generated/qga-qapi-visit.o
diff --git a/qga/commands-posix-ssh.c b/qga/commands-posix-ssh.c
new file mode 100644
index 0000000000..f74d89679c
--- /dev/null
+++ b/qga/commands-posix-ssh.c
@@ -0,0 +1,407 @@
+ /*
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+#include "qemu/osdep.h"
+
+#include <glib-unix.h>
+#include <glib/gstdio.h>
+#include <locale.h>
+#include <pwd.h>
+
+#include "qapi/error.h"
+#include "qga-qapi-commands.h"
+
+#ifdef QGA_BUILD_UNIT_TEST
+static struct passwd *
+test_get_passwd_entry(const gchar *user_name, GError **error)
+{
+ struct passwd *p;
+ int ret;
+
+ if (!user_name || g_strcmp0(user_name, g_get_user_name())) {
+ g_set_error(error, G_UNIX_ERROR, 0, "Invalid user name");
+ return NULL;
+ }
+
+ p = g_new0(struct passwd, 1);
+ p->pw_dir = (char *)g_get_home_dir();
+ p->pw_uid = geteuid();
+ p->pw_gid = getegid();
+
+ ret = g_mkdir_with_parents(p->pw_dir, 0700);
+ g_assert(ret == 0);
+
+ return p;
+}
+
+#define g_unix_get_passwd_entry_qemu(username, err) \
+ test_get_passwd_entry(username, err)
+#endif
+
+static struct passwd *
+get_passwd_entry(const char *username, Error **errp)
+{
+ g_autoptr(GError) err = NULL;
+ struct passwd *p;
+
+ ERRP_GUARD();
+
+ p = g_unix_get_passwd_entry_qemu(username, &err);
+ if (p == NULL) {
+ error_setg(errp, "failed to lookup user '%s': %s",
+ username, err->message);
+ return NULL;
+ }
+
+ return p;
+}
+
+static bool
+mkdir_for_user(const char *path, const struct passwd *p,
+ mode_t mode, Error **errp)
+{
+ ERRP_GUARD();
+
+ if (g_mkdir(path, mode) == -1) {
+ error_setg(errp, "failed to create directory '%s': %s",
+ path, g_strerror(errno));
+ return false;
+ }
+
+ if (chown(path, p->pw_uid, p->pw_gid) == -1) {
+ error_setg(errp, "failed to set ownership of directory '%s': %s",
+ path, g_strerror(errno));
+ return false;
+ }
+
+ if (chmod(path, mode) == -1) {
+ error_setg(errp, "failed to set permissions of directory '%s': %s",
+ path, g_strerror(errno));
+ return false;
+ }
+
+ return true;
+}
+
+static bool
+check_openssh_pub_key(const char *key, Error **errp)
+{
+ ERRP_GUARD();
+
+ /* simple sanity-check, we may want more? */
+ if (!key || key[0] == '#' || strchr(key, '\n')) {
+ error_setg(errp, "invalid OpenSSH public key: '%s'", key);
+ return false;
+ }
+
+ return true;
+}
+
+static bool
+check_openssh_pub_keys(strList *keys, size_t *nkeys, Error **errp)
+{
+ size_t n = 0;
+ strList *k;
+
+ ERRP_GUARD();
+
+ for (k = keys; k != NULL; k = k->next) {
+ if (!check_openssh_pub_key(k->value, errp)) {
+ return false;
+ }
+ n++;
+ }
+
+ if (nkeys) {
+ *nkeys = n;
+ }
+ return true;
+}
+
+static bool
+write_authkeys(const char *path, const GStrv keys,
+ const struct passwd *p, Error **errp)
+{
+ g_autofree char *contents = NULL;
+ g_autoptr(GError) err = NULL;
+
+ ERRP_GUARD();
+
+ contents = g_strjoinv("\n", keys);
+ if (!g_file_set_contents(path, contents, -1, &err)) {
+ error_setg(errp, "failed to write to '%s': %s", path, err->message);
+ return false;
+ }
+
+ if (chown(path, p->pw_uid, p->pw_gid) == -1) {
+ error_setg(errp, "failed to set ownership of directory '%s': %s",
+ path, g_strerror(errno));
+ return false;
+ }
+
+ if (chmod(path, 0600) == -1) {
+ error_setg(errp, "failed to set permissions of '%s': %s",
+ path, g_strerror(errno));
+ return false;
+ }
+
+ return true;
+}
+
+static GStrv
+read_authkeys(const char *path, Error **errp)
+{
+ g_autoptr(GError) err = NULL;
+ g_autofree char *contents = NULL;
+
+ ERRP_GUARD();
+
+ if (!g_file_get_contents(path, &contents, NULL, &err)) {
+ error_setg(errp, "failed to read '%s': %s", path, err->message);
+ return NULL;
+ }
+
+ return g_strsplit(contents, "\n", -1);
+
+}
+
+void
+qmp_guest_ssh_add_authorized_keys(const char *username, strList *keys,
+ Error **errp)
+{
+ g_autofree struct passwd *p = NULL;
+ g_autofree char *ssh_path = NULL;
+ g_autofree char *authkeys_path = NULL;
+ g_auto(GStrv) authkeys = NULL;
+ strList *k;
+ size_t nkeys, nauthkeys;
+
+ ERRP_GUARD();
+
+ if (!check_openssh_pub_keys(keys, &nkeys, errp)) {
+ return;
+ }
+
+ p = get_passwd_entry(username, errp);
+ if (p == NULL) {
+ return;
+ }
+
+ ssh_path = g_build_filename(p->pw_dir, ".ssh", NULL);
+ authkeys_path = g_build_filename(ssh_path, "authorized_keys", NULL);
+
+ authkeys = read_authkeys(authkeys_path, NULL);
+ if (authkeys == NULL) {
+ if (!g_file_test(ssh_path, G_FILE_TEST_IS_DIR) &&
+ !mkdir_for_user(ssh_path, p, 0700, errp)) {
+ return;
+ }
+ }
+
+ nauthkeys = authkeys ? g_strv_length(authkeys) : 0;
+ authkeys = g_realloc_n(authkeys, nauthkeys + nkeys + 1, sizeof(char *));
+ memset(authkeys + nauthkeys, 0, (nkeys + 1) * sizeof(char *));
+
+ for (k = keys; k != NULL; k = k->next) {
+ if (g_strv_contains((const gchar * const *)authkeys, k->value)) {
+ continue;
+ }
+ authkeys[nauthkeys++] = g_strdup(k->value);
+ }
+
+ write_authkeys(authkeys_path, authkeys, p, errp);
+}
+
+void
+qmp_guest_ssh_remove_authorized_keys(const char *username, strList *keys,
+ Error **errp)
+{
+ g_autofree struct passwd *p = NULL;
+ g_autofree char *authkeys_path = NULL;
+ g_autofree GStrv new_keys = NULL; /* do not own the strings */
+ g_auto(GStrv) authkeys = NULL;
+ GStrv a;
+ size_t nkeys = 0;
+
+ ERRP_GUARD();
+
+ if (!check_openssh_pub_keys(keys, NULL, errp)) {
+ return;
+ }
+
+ p = get_passwd_entry(username, errp);
+ if (p == NULL) {
+ return;
+ }
+
+ authkeys_path = g_build_filename(p->pw_dir, ".ssh",
+ "authorized_keys", NULL);
+ if (!g_file_test(authkeys_path, G_FILE_TEST_EXISTS)) {
+ return;
+ }
+ authkeys = read_authkeys(authkeys_path, errp);
+ if (authkeys == NULL) {
+ return;
+ }
+
+ new_keys = g_new0(char *, g_strv_length(authkeys) + 1);
+ for (a = authkeys; *a != NULL; a++) {
+ strList *k;
+
+ for (k = keys; k != NULL; k = k->next) {
+ if (g_str_equal(k->value, *a)) {
+ break;
+ }
+ }
+ if (k != NULL) {
+ continue;
+ }
+
+ new_keys[nkeys++] = *a;
+ }
+
+ write_authkeys(authkeys_path, new_keys, p, errp);
+}
+
+
+#ifdef QGA_BUILD_UNIT_TEST
+#if GLIB_CHECK_VERSION(2, 60, 0)
+static const strList test_key2 = {
+ .value = (char *)"algo key2 comments"
+};
+
+static const strList test_key1_2 = {
+ .value = (char *)"algo key1 comments",
+ .next = (strList *)&test_key2,
+};
+
+static char *
+test_get_authorized_keys_path(void)
+{
+ return g_build_filename(g_get_home_dir(), ".ssh", "authorized_keys", NULL);
+}
+
+static void
+test_authorized_keys_set(const char *contents)
+{
+ g_autoptr(GError) err = NULL;
+ g_autofree char *path = NULL;
+ int ret;
+
+ path = g_build_filename(g_get_home_dir(), ".ssh", NULL);
+ ret = g_mkdir_with_parents(path, 0700);
+ g_assert(ret == 0);
+ g_free(path);
+
+ path = test_get_authorized_keys_path();
+ g_file_set_contents(path, contents, -1, &err);
+ g_assert(err == NULL);
+}
+
+static void
+test_authorized_keys_equal(const char *expected)
+{
+ g_autoptr(GError) err = NULL;
+ g_autofree char *path = NULL;
+ g_autofree char *contents = NULL;
+
+ path = test_get_authorized_keys_path();
+ g_file_get_contents(path, &contents, NULL, &err);
+ g_assert(err == NULL);
+
+ g_assert(g_strcmp0(contents, expected) == 0);
+}
+
+static void
+test_invalid_user(void)
+{
+ Error *err = NULL;
+
+ qmp_guest_ssh_add_authorized_keys("", NULL, &err);
+ error_free_or_abort(&err);
+
+ qmp_guest_ssh_remove_authorized_keys("", NULL, &err);
+ error_free_or_abort(&err);
+}
+
+static void
+test_invalid_key(void)
+{
+ strList key = {
+ .value = (char *)"not a valid\nkey"
+ };
+ Error *err = NULL;
+
+ qmp_guest_ssh_add_authorized_keys(g_get_user_name(), &key, &err);
+ error_free_or_abort(&err);
+
+ qmp_guest_ssh_remove_authorized_keys(g_get_user_name(), &key, &err);
+ error_free_or_abort(&err);
+}
+
+static void
+test_add_keys(void)
+{
+ Error *err = NULL;
+
+ qmp_guest_ssh_add_authorized_keys(g_get_user_name(),
+ (strList *)&test_key2, &err);
+ g_assert(err == NULL);
+
+ test_authorized_keys_equal("algo key2 comments");
+
+ qmp_guest_ssh_add_authorized_keys(g_get_user_name(),
+ (strList *)&test_key1_2, &err);
+ g_assert(err == NULL);
+
+ /* key2 came first, and should'nt be duplicated */
+ test_authorized_keys_equal("algo key2 comments\n"
+ "algo key1 comments");
+}
+
+static void
+test_remove_keys(void)
+{
+ Error *err = NULL;
+ static const char *authkeys =
+ "algo key1 comments\n"
+ /* originally duplicated */
+ "algo key1 comments\n"
+ "# a commented line\n"
+ "algo some-key another\n";
+
+ test_authorized_keys_set(authkeys);
+ qmp_guest_ssh_remove_authorized_keys(g_get_user_name(),
+ (strList *)&test_key2, &err);
+ g_assert(err == NULL);
+ test_authorized_keys_equal(authkeys);
+
+ qmp_guest_ssh_remove_authorized_keys(g_get_user_name(),
+ (strList *)&test_key1_2, &err);
+ g_assert(err == NULL);
+ test_authorized_keys_equal("# a commented line\n"
+ "algo some-key another\n");
+}
+
+int main(int argc, char *argv[])
+{
+ setlocale(LC_ALL, "");
+
+ g_test_init(&argc, &argv, G_TEST_OPTION_ISOLATE_DIRS, NULL);
+
+ g_test_add_func("/qga/ssh/invalid_user", test_invalid_user);
+ g_test_add_func("/qga/ssh/invalid_key", test_invalid_key);
+ g_test_add_func("/qga/ssh/add_keys", test_add_keys);
+ g_test_add_func("/qga/ssh/remove_keys", test_remove_keys);
+
+ return g_test_run();
+}
+#else
+int main(int argc, char *argv[])
+{
+ g_test_message("test skipped, needs glib >= 2.60");
+ return 0;
+}
+#endif /* GLIB_2_60 */
+#endif /* BUILD_UNIT_TEST */
diff --git a/qga/qapi-schema.json b/qga/qapi-schema.json
index 4222cb92d3..3b85f5a03f 100644
--- a/qga/qapi-schema.json
+++ b/qga/qapi-schema.json
@@ -1273,3 +1273,38 @@
##
{ 'command': 'guest-get-osinfo',
'returns': 'GuestOSInfo' }
+
+##
+# @guest-ssh-add-authorized-keys:
+#
+# @username: the user account to add the authorized keys
+# @keys: the public keys to add (in OpenSSH/sshd(8) authorized_keys format)
+#
+# Append public keys to user .ssh/authorized_keys on Unix systems (not
+# implemented for other systems).
+#
+# Returns: Nothing on success.
+#
+# Since: 5.2
+##
+{ 'command': 'guest-ssh-add-authorized-keys',
+ 'data': { 'username': 'str', 'keys': ['str'] },
+ 'if': 'defined(CONFIG_POSIX)' }
+
+##
+# @guest-ssh-remove-authorized-keys:
+#
+# @username: the user account to remove the authorized keys
+# @keys: the public keys to remove (in OpenSSH/sshd(8) authorized_keys format)
+#
+# Remove public keys from the user .ssh/authorized_keys on Unix systems (not
+# implemented for other systems). It's not an error if the key is already
+# missing.
+#
+# Returns: Nothing on success.
+#
+# Since: 5.2
+##
+{ 'command': 'guest-ssh-remove-authorized-keys',
+ 'data': { 'username': 'str', 'keys': ['str'] },
+ 'if': 'defined(CONFIG_POSIX)' }
--
2.27.0

170
SOURCES/kvm-qga-add-ssh-get-authorized-keys.patch Normal file
View File

@ -0,0 +1,170 @@
From 1ed102f5489e6cf3168d9014e9a082909193b6fc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
Date: Thu, 29 Jul 2021 04:55:57 -0400
Subject: [PATCH 04/14] qga: add ssh-get-authorized-keys
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: <20210609100615.2501448-5-marcandre.lureau@redhat.com>
Patchwork-id: 101690
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 4/4] qga: add ssh-get-authorized-keys
Bugzilla: 1967716
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Michal Privoznik <mprivozn@redhat.com>
From: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
*fix-up merge conflicts due to qga-ssh-test being disabled in earlier
patch due to G_TEST_OPTION_ISOLATE_DIRS triggering build-oss-fuzz
leak detector.
*fix up style and disallowed g_assert* usage reported by checkpatch
Signed-off-by: Michael Roth <michael.roth@amd.com>
(cherry picked from commit cad97c08a1c17830d77a46780088bc0199df89d1)
[ Fix trivial schema conflict ]
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
qga/commands-posix-ssh.c | 66 ++++++++++++++++++++++++++++++++++++++++
qga/qapi-schema.json | 30 ++++++++++++++++++
2 files changed, 96 insertions(+)
diff --git a/qga/commands-posix-ssh.c b/qga/commands-posix-ssh.c
index 362c9e8816..749167e82d 100644
--- a/qga/commands-posix-ssh.c
+++ b/qga/commands-posix-ssh.c
@@ -268,6 +268,46 @@ qmp_guest_ssh_remove_authorized_keys(const char *username, strList *keys,
write_authkeys(authkeys_path, new_keys, p, errp);
}
+GuestAuthorizedKeys *
+qmp_guest_ssh_get_authorized_keys(const char *username, Error **errp)
+{
+ g_autofree struct passwd *p = NULL;
+ g_autofree char *authkeys_path = NULL;
+ g_auto(GStrv) authkeys = NULL;
+ g_autoptr(GuestAuthorizedKeys) ret = NULL;
+ int i;
+
+ ERRP_GUARD();
+
+ p = get_passwd_entry(username, errp);
+ if (p == NULL) {
+ return NULL;
+ }
+
+ authkeys_path = g_build_filename(p->pw_dir, ".ssh",
+ "authorized_keys", NULL);
+ authkeys = read_authkeys(authkeys_path, errp);
+ if (authkeys == NULL) {
+ return NULL;
+ }
+
+ ret = g_new0(GuestAuthorizedKeys, 1);
+ for (i = 0; authkeys[i] != NULL; i++) {
+ strList *new;
+
+ g_strstrip(authkeys[i]);
+ if (!authkeys[i][0] || authkeys[i][0] == '#') {
+ continue;
+ }
+
+ new = g_new0(strList, 1);
+ new->value = g_strdup(authkeys[i]);
+ new->next = ret->keys;
+ ret->keys = new;
+ }
+
+ return g_steal_pointer(&ret);
+}
#ifdef QGA_BUILD_UNIT_TEST
#if GLIB_CHECK_VERSION(2, 60, 0)
@@ -426,6 +466,31 @@ test_remove_keys(void)
"algo some-key another\n");
}
+static void
+test_get_keys(void)
+{
+ Error *err = NULL;
+ static const char *authkeys =
+ "algo key1 comments\n"
+ "# a commented line\n"
+ "algo some-key another\n";
+ g_autoptr(GuestAuthorizedKeys) ret = NULL;
+ strList *k;
+ size_t len = 0;
+
+ test_authorized_keys_set(authkeys);
+
+ ret = qmp_guest_ssh_get_authorized_keys(g_get_user_name(), &err);
+ g_assert(err == NULL);
+
+ for (len = 0, k = ret->keys; k != NULL; k = k->next) {
+ g_assert(g_str_has_prefix(k->value, "algo "));
+ len++;
+ }
+
+ g_assert(len == 2);
+}
+
int main(int argc, char *argv[])
{
setlocale(LC_ALL, "");
@@ -437,6 +502,7 @@ int main(int argc, char *argv[])
g_test_add_func("/qga/ssh/add_keys", test_add_keys);
g_test_add_func("/qga/ssh/add_reset_keys", test_add_reset_keys);
g_test_add_func("/qga/ssh/remove_keys", test_remove_keys);
+ g_test_add_func("/qga/ssh/get_keys", test_get_keys);
return g_test_run();
}
diff --git a/qga/qapi-schema.json b/qga/qapi-schema.json
index a70ea5da77..97bf96712e 100644
--- a/qga/qapi-schema.json
+++ b/qga/qapi-schema.json
@@ -1274,6 +1274,36 @@
{ 'command': 'guest-get-osinfo',
'returns': 'GuestOSInfo' }
+##
+# @GuestAuthorizedKeys:
+#
+# @keys: public keys (in OpenSSH/sshd(8) authorized_keys format)
+#
+# Since: 5.2
+##
+{ 'struct': 'GuestAuthorizedKeys',
+ 'data': {
+ 'keys': ['str']
+ },
+ 'if': 'defined(CONFIG_POSIX)' }
+
+##
+# @guest-ssh-get-authorized-keys:
+#
+# @username: the user account to add the authorized keys
+#
+# Return the public keys from user .ssh/authorized_keys on Unix systems (not
+# implemented for other systems).
+#
+# Returns: @GuestAuthorizedKeys
+#
+# Since: 5.2
+##
+{ 'command': 'guest-ssh-get-authorized-keys',
+ 'data': { 'username': 'str' },
+ 'returns': 'GuestAuthorizedKeys',
+ 'if': 'defined(CONFIG_POSIX)' }
+
##
# @guest-ssh-add-authorized-keys:
#
--
2.27.0

54
SOURCES/kvm-rtl8139-switch-to-use-qemu_receive_packet-for-loopba.patch Normal file
View File

@ -0,0 +1,54 @@
From 4079c4e96f910fe7e57af13feb433f06246f1d79 Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Tue, 29 Jun 2021 03:42:44 -0400
Subject: [PATCH 6/9] rtl8139: switch to use qemu_receive_packet() for loopback
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210629034247.3286477-7-jmaloy@redhat.com>
Patchwork-id: 101792
O-Subject: [RHEL-8.4.0.z qemu-kvm PATCH v2 6/9] rtl8139: switch to use qemu_receive_packet() for loopback
Bugzilla: 1932917
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Thomas Huth <thuth@redhat.com>
From: Alexander Bulekov <alxndr@bu.edu>
This patch switches to use qemu_receive_packet() which can detect
reentrancy and return early.
This is intended to address CVE-2021-3416.
Cc: Prasad J Pandit <ppandit@redhat.com>
Cc: qemu-stable@nongnu.org
Buglink: https://bugs.launchpad.net/qemu/+bug/1910826
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit 5311fb805a4403bba024e83886fa0e7572265de4)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/net/rtl8139.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/net/rtl8139.c b/hw/net/rtl8139.c
index 21d80e96cf..ccb04faa4c 100644
--- a/hw/net/rtl8139.c
+++ b/hw/net/rtl8139.c
@@ -1793,7 +1793,7 @@ static void rtl8139_transfer_frame(RTL8139State *s, uint8_t *buf, int size,
}
DPRINTF("+++ transmit loopback mode\n");
- rtl8139_do_receive(qemu_get_queue(s->nic), buf, size, do_interrupt);
+ qemu_receive_packet(qemu_get_queue(s->nic), buf, size);
if (iov) {
g_free(buf2);
--
2.27.0

84
SOURCES/kvm-softmmu-memory-Log-invalid-memory-accesses.patch Normal file
View File

@ -0,0 +1,84 @@
From be0a190e3c5c4ff84f7c53630ed5a55644d18acc Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Wed, 21 Apr 2021 22:30:06 -0400
Subject: [PATCH 7/7] softmmu/memory: Log invalid memory accesses
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210421223006.19650-7-jmaloy@redhat.com>
Patchwork-id: 101481
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH v2 6/6] softmmu/memory: Log invalid memory accesses
Bugzilla: 1842478
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
From: Philippe Mathieu-Daudé <philmd@redhat.com>
Log invalid memory accesses with as GUEST_ERROR.
This is particularly useful since commit 5d971f9e67 which reverted
("memory: accept mismatching sizes in memory_region_access_valid").
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20201005152725.2143444-1-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
(cherry picked from commit 21786c7e59847b1612406ff394958f22e5b323f8)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
memory.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/memory.c b/memory.c
index 0cfcb72a5a..660df8159a 100644
--- a/memory.c
+++ b/memory.c
@@ -14,6 +14,7 @@
*/
#include "qemu/osdep.h"
+#include "qemu/log.h"
#include "qapi/error.h"
#include "cpu.h"
#include "exec/memory.h"
@@ -1353,10 +1354,18 @@ bool memory_region_access_valid(MemoryRegion *mr,
{
if (mr->ops->valid.accepts
&& !mr->ops->valid.accepts(mr->opaque, addr, size, is_write, attrs)) {
+ qemu_log_mask(LOG_GUEST_ERROR, "Invalid access at addr "
+ "0x%" HWADDR_PRIX ", size %u, "
+ "region '%s', reason: rejected\n",
+ addr, size, memory_region_name(mr));
return false;
}
if (!mr->ops->valid.unaligned && (addr & (size - 1))) {
+ qemu_log_mask(LOG_GUEST_ERROR, "Invalid access at addr "
+ "0x%" HWADDR_PRIX ", size %u, "
+ "region '%s', reason: unaligned\n",
+ addr, size, memory_region_name(mr));
return false;
}
@@ -1367,6 +1376,13 @@ bool memory_region_access_valid(MemoryRegion *mr,
if (size > mr->ops->valid.max_access_size
|| size < mr->ops->valid.min_access_size) {
+ qemu_log_mask(LOG_GUEST_ERROR, "Invalid access at addr "
+ "0x%" HWADDR_PRIX ", size %u, "
+ "region '%s', reason: invalid size "
+ "(min:%u max:%u)\n",
+ addr, size, memory_region_name(mr),
+ mr->ops->valid.min_access_size,
+ mr->ops->valid.max_access_size);
return false;
}
return true;
--
2.27.0

205
SOURCES/kvm-spapr-Adjust-firmware-path-of-PCI-devices.patch Normal file
View File

@ -0,0 +1,205 @@
From dfdf950e893c23e77c9dc0be18fca66ad195d260 Mon Sep 17 00:00:00 2001
From: Greg Kurz <gkurz@redhat.com>
Date: Wed, 10 Feb 2021 15:56:45 +0000
Subject: [PATCH 2/2] spapr: Adjust firmware path of PCI devices
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Greg Kurz <gkurz@redhat.com>
Message-id: <20210210165645.470195-2-gkurz@redhat.com>
Patchwork-id: 101038
O-Subject: [RHEL-8.4.0 qemu-kvm PATCH 1/1] spapr: Adjust firmware path of PCI devices
Bugzilla: 1912891
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: David Gibson <dgibson@redhat.com>
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
From: Greg Kurz <groug@kaod.org>
It is currently not possible to perform a strict boot from USB storage:
$ qemu-system-ppc64 -accel kvm -nodefaults -nographic -serial stdio \
-boot strict=on \
-device qemu-xhci \
-device usb-storage,drive=disk,bootindex=0 \
-blockdev driver=file,node-name=disk,filename=fedora-ppc64le.qcow2
SLOF **********************************************************************
QEMU Starting
Build Date = Jul 17 2020 11:15:24
FW Version = git-e18ddad8516ff2cf
Press "s" to enter Open Firmware.
Populating /vdevice methods
Populating /vdevice/vty@71000000
Populating /vdevice/nvram@71000001
Populating /pci@800000020000000
00 0000 (D) : 1b36 000d serial bus [ usb-xhci ]
No NVRAM common partition, re-initializing...
Scanning USB
XHCI: Initializing
USB Storage
SCSI: Looking for devices
101000000000000 DISK : "QEMU QEMU HARDDISK 2.5+"
Using default console: /vdevice/vty@71000000
Welcome to Open Firmware
Copyright (c) 2004, 2017 IBM Corporation All rights reserved.
This program and the accompanying materials are made available
under the terms of the BSD License available at
http://www.opensource.org/licenses/bsd-license.php
Trying to load: from: /pci@800000020000000/usb@0/storage@1/disk@101000000000000 ...
E3405: No such device
E3407: Load failed
Type 'boot' and press return to continue booting the system.
Type 'reset-all' and press return to reboot the system.
Ready!
0 >
The device tree handed over by QEMU to SLOF indeed contains:
qemu,boot-list =
"/pci@800000020000000/usb@0/storage@1/disk@101000000000000 HALT";
but the device node is named usb-xhci@0, not usb@0.
This happens because the firmware names of PCI devices returned
by get_boot_devices_list() come from pcibus_get_fw_dev_path(),
while the sPAPR PHB code uses a different naming scheme for
device nodes. This inconsistency has always been there but it was
hidden for a long time because SLOF used to rename USB device
nodes, until this commit, merged in QEMU 4.2.0 :
commit 85164ad4ed9960cac842fa4cc067c6b6699b0994
Author: Alexey Kardashevskiy <aik@ozlabs.ru>
Date: Wed Sep 11 16:24:32 2019 +1000
pseries: Update SLOF firmware image
This fixes USB host bus adapter name in the device tree to match QEMU's
one.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Fortunately, sPAPR implements the firmware path provider interface.
This provides a way to override the default firmware paths.
Just factor out the sPAPR PHB naming logic from spapr_dt_pci_device()
to a helper, and use it in the sPAPR firmware path provider hook.
Fixes: 85164ad4ed99 ("pseries: Update SLOF firmware image")
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <20210122170157.246374-1-groug@kaod.org>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
(cherry picked from commit 040bdafce12f750816d879442014df2999a995c4)
Signed-off-by: Greg Kurz <gkurz@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/ppc/spapr.c | 5 +++++
hw/ppc/spapr_pci.c | 33 ++++++++++++++++++---------------
include/hw/pci-host/spapr.h | 2 ++
3 files changed, 25 insertions(+), 15 deletions(-)
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 00b1ef075e..bee2299199 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -3013,6 +3013,7 @@ static char *spapr_get_fw_dev_path(FWPathProvider *p, BusState *bus,
SCSIDevice *d = CAST(SCSIDevice, dev, TYPE_SCSI_DEVICE);
SpaprPhbState *phb = CAST(SpaprPhbState, dev, TYPE_SPAPR_PCI_HOST_BRIDGE);
VHostSCSICommon *vsc = CAST(VHostSCSICommon, dev, TYPE_VHOST_SCSI_COMMON);
+ PCIDevice *pcidev = CAST(PCIDevice, dev, TYPE_PCI_DEVICE);
if (d) {
void *spapr = CAST(void, bus->parent, "spapr-vscsi");
@@ -3086,6 +3087,10 @@ static char *spapr_get_fw_dev_path(FWPathProvider *p, BusState *bus,
return g_strdup_printf("pci@%x", PCI_SLOT(pcidev->devfn));
}
+ if (pcidev) {
+ return spapr_pci_fw_dev_name(pcidev);
+ }
+
return NULL;
}
diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
index f6fbcf99ed..befa570aa8 100644
--- a/hw/ppc/spapr_pci.c
+++ b/hw/ppc/spapr_pci.c
@@ -1348,15 +1348,29 @@ static int spapr_dt_pci_bus(SpaprPhbState *sphb, PCIBus *bus,
return offset;
}
+char *spapr_pci_fw_dev_name(PCIDevice *dev)
+{
+ const gchar *basename;
+ int slot = PCI_SLOT(dev->devfn);
+ int func = PCI_FUNC(dev->devfn);
+ uint32_t ccode = pci_default_read_config(dev, PCI_CLASS_PROG, 3);
+
+ basename = dt_name_from_class((ccode >> 16) & 0xff, (ccode >> 8) & 0xff,
+ ccode & 0xff);
+
+ if (func != 0) {
+ return g_strdup_printf("%s@%x,%x", basename, slot, func);
+ } else {
+ return g_strdup_printf("%s@%x", basename, slot);
+ }
+}
+
/* create OF node for pci device and required OF DT properties */
static int spapr_dt_pci_device(SpaprPhbState *sphb, PCIDevice *dev,
void *fdt, int parent_offset)
{
int offset;
- const gchar *basename;
- gchar *nodename;
- int slot = PCI_SLOT(dev->devfn);
- int func = PCI_FUNC(dev->devfn);
+ g_autofree gchar *nodename = spapr_pci_fw_dev_name(dev);
PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev);
ResourceProps rp;
SpaprDrc *drc = drc_from_dev(sphb, dev);
@@ -1373,19 +1387,8 @@ static int spapr_dt_pci_device(SpaprPhbState *sphb, PCIDevice *dev,
uint32_t pci_status = pci_default_read_config(dev, PCI_STATUS, 2);
gchar *loc_code;
- basename = dt_name_from_class((ccode >> 16) & 0xff, (ccode >> 8) & 0xff,
- ccode & 0xff);
-
- if (func != 0) {
- nodename = g_strdup_printf("%s@%x,%x", basename, slot, func);
- } else {
- nodename = g_strdup_printf("%s@%x", basename, slot);
- }
-
_FDT(offset = fdt_add_subnode(fdt, parent_offset, nodename));
- g_free(nodename);
-
/* in accordance with PAPR+ v2.7 13.6.3, Table 181 */
_FDT(fdt_setprop_cell(fdt, offset, "vendor-id", vendor_id));
_FDT(fdt_setprop_cell(fdt, offset, "device-id", device_id));
diff --git a/include/hw/pci-host/spapr.h b/include/hw/pci-host/spapr.h
index 8877ff51fb..9522db9047 100644
--- a/include/hw/pci-host/spapr.h
+++ b/include/hw/pci-host/spapr.h
@@ -212,4 +212,6 @@ static inline unsigned spapr_phb_windows_supported(SpaprPhbState *sphb)
return sphb->ddw_enabled ? SPAPR_PCI_DMA_MAX_WINDOWS : 1;
}
+char *spapr_pci_fw_dev_name(PCIDevice *dev);
+
#endif /* PCI_HOST_SPAPR_H */
--
2.27.0

165
SOURCES/kvm-spapr-Fix-EEH-capability-issue-on-KVM-guest-for-PCI-.patch Normal file
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@ -0,0 +1,165 @@
From f9d332b1280cd3f6009b59323719548a36a7c52b Mon Sep 17 00:00:00 2001
From: Daniel Henrique Barboza <dbarboza@redhat.com>
Date: Mon, 21 Jun 2021 14:40:24 -0400
Subject: [PATCH 2/4] spapr: Fix EEH capability issue on KVM guest for PCI
passthru
RH-Author: Daniel Henrique Barboza <dbarboza@redhat.com>
Message-id: <20210621144024.199732-2-dbarboza@redhat.com>
Patchwork-id: 101740
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 1/1] spapr: Fix EEH capability issue on KVM guest for PCI passthru
Bugzilla: 1957866
RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
RH-Acked-by: Greg Kurz <gkurz@redhat.com>
RH-Acked-by: David Gibson <dgibson@redhat.com>
From: Mahesh Salgaonkar <mahesh@linux.ibm.com>
With upstream kernel, especially after commit 98ba956f6a389
("powerpc/pseries/eeh: Rework device EEH PE determination") we see that KVM
guest isn't able to enable EEH option for PCI pass-through devices anymore.
[root@atest-guest ~]# dmesg | grep EEH
[ 0.032337] EEH: pSeries platform initialized
[ 0.298207] EEH: No capable adapters found: recovery disabled.
[root@atest-guest ~]#
So far the linux kernel was assuming pe_config_addr equal to device's
config_addr and using it to enable EEH on the PE through ibm,set-eeh-option
RTAS call. Which wasn't the correct way as per PAPR. The linux kernel
commit 98ba956f6a389 fixed this flow. With that fixed, linux now uses PE
config address returned by ibm,get-config-addr-info2 RTAS call to enable
EEH option per-PE basis instead of per-device basis. However this has
uncovered a bug in qemu where ibm,set-eeh-option is treating PE config
address as per-device config address.
Hence in qemu guest with recent kernel the ibm,set-eeh-option RTAS call
fails with -3 return value indicating that there is no PCI device exist for
the specified PE config address. The rtas_ibm_set_eeh_option call uses
pci_find_device() to get the PC device that matches specific bus and devfn
extracted from PE config address passed as argument. Thus it tries to map
the PE config address to a single specific PCI device 'bus->devices[devfn]'
which always results into checking device on slot 0 'bus->devices[0]'.
This succeeds when there is a pass-through device (vfio-pci) present on
slot 0. But in cases where there is no pass-through device present in slot
0, but present in non-zero slots, ibm,set-eeh-option call fails to enable
the EEH capability.
hw/ppc/spapr_pci_vfio.c: spapr_phb_vfio_eeh_set_option()
case RTAS_EEH_ENABLE: {
PCIHostState *phb;
PCIDevice *pdev;
/*
* The EEH functionality is enabled on basis of PCI device,
* instead of PE. We need check the validity of the PCI
* device address.
*/
phb = PCI_HOST_BRIDGE(sphb);
pdev = pci_find_device(phb->bus,
(addr >> 16) & 0xFF, (addr >> 8) & 0xFF);
if (!pdev || !object_dynamic_cast(OBJECT(pdev), "vfio-pci")) {
return RTAS_OUT_PARAM_ERROR;
}
hw/pci/pci.c:pci_find_device()
PCIDevice *pci_find_device(PCIBus *bus, int bus_num, uint8_t devfn)
{
bus = pci_find_bus_nr(bus, bus_num);
if (!bus)
return NULL;
return bus->devices[devfn];
}
This patch fixes ibm,set-eeh-option to check for presence of any PCI device
(vfio-pci) under specified bus and enable the EEH if found. The current
code already makes sure that all the devices on that bus are from same
iommu group (within same PE) and fail very early if it does not.
After this fix guest is able to find EEH capable devices and enable EEH
recovery on it.
[root@atest-guest ~]# dmesg | grep EEH
[ 0.048139] EEH: pSeries platform initialized
[ 0.405115] EEH: Capable adapter found: recovery enabled.
[root@atest-guest ~]#
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Mahesh Salgaonkar <mahesh@linux.ibm.com>
Message-Id: <162158429107.145117.5843504911924013125.stgit@jupiter>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
(cherry picked from commit ac9ef668321ebb6eb871a0c4dd380fa7d7891b4e)
Signed-off-by: Daniel Henrique Barboza <dbarboza@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/ppc/spapr_pci_vfio.c | 40 +++++++++++++++++++++++++++++++++-------
1 file changed, 33 insertions(+), 7 deletions(-)
diff --git a/hw/ppc/spapr_pci_vfio.c b/hw/ppc/spapr_pci_vfio.c
index ecb34aaade..a411b08d60 100644
--- a/hw/ppc/spapr_pci_vfio.c
+++ b/hw/ppc/spapr_pci_vfio.c
@@ -48,6 +48,16 @@ void spapr_phb_vfio_reset(DeviceState *qdev)
spapr_phb_vfio_eeh_reenable(SPAPR_PCI_HOST_BRIDGE(qdev));
}
+static void spapr_eeh_pci_find_device(PCIBus *bus, PCIDevice *pdev,
+ void *opaque)
+{
+ bool *found = opaque;
+
+ if (object_dynamic_cast(OBJECT(pdev), "vfio-pci")) {
+ *found = true;
+ }
+}
+
int spapr_phb_vfio_eeh_set_option(SpaprPhbState *sphb,
unsigned int addr, int option)
{
@@ -60,17 +70,33 @@ int spapr_phb_vfio_eeh_set_option(SpaprPhbState *sphb,
break;
case RTAS_EEH_ENABLE: {
PCIHostState *phb;
- PCIDevice *pdev;
+ bool found = false;
/*
- * The EEH functionality is enabled on basis of PCI device,
- * instead of PE. We need check the validity of the PCI
- * device address.
+ * The EEH functionality is enabled per sphb level instead of
+ * per PCI device. We have already identified this specific sphb
+ * based on buid passed as argument to ibm,set-eeh-option rtas
+ * call. Now we just need to check the validity of the PCI
+ * pass-through devices (vfio-pci) under this sphb bus.
+ * We have already validated that all the devices under this sphb
+ * are from same iommu group (within same PE) before comming here.
+ *
+ * Prior to linux commit 98ba956f6a389 ("powerpc/pseries/eeh:
+ * Rework device EEH PE determination") kernel would call
+ * eeh-set-option for each device in the PE using the device's
+ * config_address as the argument rather than the PE address.
+ * Hence if we check validity of supplied config_addr whether
+ * it matches to this PHB will cause issues with older kernel
+ * versions v5.9 and older. If we return an error from
+ * eeh-set-option when the argument isn't a valid PE address
+ * then older kernels (v5.9 and older) will interpret that as
+ * EEH not being supported.
*/
phb = PCI_HOST_BRIDGE(sphb);
- pdev = pci_find_device(phb->bus,
- (addr >> 16) & 0xFF, (addr >> 8) & 0xFF);
- if (!pdev || !object_dynamic_cast(OBJECT(pdev), "vfio-pci")) {
+ pci_for_each_device(phb->bus, (addr >> 16) & 0xFF,
+ spapr_eeh_pci_find_device, &found);
+
+ if (!found) {
return RTAS_OUT_PARAM_ERROR;
}
--
2.27.0

50
SOURCES/kvm-spapr-Remove-stale-comment-about-power-saving-LPCR-b.patch Normal file
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@ -0,0 +1,50 @@
From b46fdf56b1a7938468565838bdadf260870e4f9b Mon Sep 17 00:00:00 2001
From: Laurent Vivier <lvivier@redhat.com>
Date: Wed, 9 Jun 2021 10:05:00 -0400
Subject: [PATCH 3/4] spapr: Remove stale comment about power-saving LPCR bits
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Laurent Vivier <lvivier@redhat.com>
Message-id: <20210609100501.427096-2-lvivier@redhat.com>
Patchwork-id: 101682
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 1/2] spapr: Remove stale comment about power-saving LPCR bits
Bugzilla: 1969768
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: David Gibson <dgibson@redhat.com>
RH-Acked-by: Greg Kurz <gkurz@redhat.com>
From: Nicholas Piggin <npiggin@gmail.com>
Commit 47a9b551547 ("spapr: Clean up handling of LPCR power-saving exit
bits") moved this logic but did not remove the comment from the
previous location.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20210526091626.3388262-2-npiggin@gmail.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
(cherry picked from commit 7be3bf6c8429969f97728bb712d9a99997835607)
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/ppc/spapr_rtas.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/hw/ppc/spapr_rtas.c b/hw/ppc/spapr_rtas.c
index 8d8d8cdfcb..295eac986e 100644
--- a/hw/ppc/spapr_rtas.c
+++ b/hw/ppc/spapr_rtas.c
@@ -163,7 +163,6 @@ static void rtas_start_cpu(PowerPCCPU *callcpu, SpaprMachineState *spapr,
env->msr = (1ULL << MSR_SF) | (1ULL << MSR_ME);
- /* Enable Power-saving mode Exit Cause exceptions for the new CPU */
lpcr = env->spr[SPR_LPCR];
if (!pcc->interrupts_big_endian(callcpu)) {
lpcr |= LPCR_ILE;
--
2.27.0

89
SOURCES/kvm-spapr-Set-LPCR-to-current-AIL-mode-when-starting-a-n.patch Normal file
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@ -0,0 +1,89 @@
From 28794dca79a94d01c8732b84fe6ac6ba2986ce45 Mon Sep 17 00:00:00 2001
From: Laurent Vivier <lvivier@redhat.com>
Date: Wed, 9 Jun 2021 10:05:01 -0400
Subject: [PATCH 4/4] spapr: Set LPCR to current AIL mode when starting a new
CPU
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Laurent Vivier <lvivier@redhat.com>
Message-id: <20210609100501.427096-3-lvivier@redhat.com>
Patchwork-id: 101683
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 2/2] spapr: Set LPCR to current AIL mode when starting a new CPU
Bugzilla: 1969768
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: David Gibson <dgibson@redhat.com>
RH-Acked-by: Greg Kurz <gkurz@redhat.com>
From: Nicholas Piggin <npiggin@gmail.com>
TCG does not keep track of AIL mode in a central place, it's based on
the current LPCR[AIL] bits. Synchronize the new CPU's LPCR to the
current LPCR in rtas_start_cpu(), similarly to the way the ILE bit is
synchronized.
Open-code the ILE setting as well now that the caller's LPCR is
available directly, there is no need for the indirection.
Without this, under both TCG and KVM, adding a POWER8/9/10 class CPU
with a new core ID after a modern Linux has booted results in the new
CPU's LPCR missing the LPCR[AIL]=0b11 setting that the other CPUs have.
This can cause crashes and unexpected behaviour.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20210526091626.3388262-3-npiggin@gmail.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
(cherry picked from commit ac559ecbea2649819e7b3fdd09f4e0243e0128db)
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/ppc/spapr_rtas.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/hw/ppc/spapr_rtas.c b/hw/ppc/spapr_rtas.c
index 295eac986e..5acb7c1f10 100644
--- a/hw/ppc/spapr_rtas.c
+++ b/hw/ppc/spapr_rtas.c
@@ -132,8 +132,8 @@ static void rtas_start_cpu(PowerPCCPU *callcpu, SpaprMachineState *spapr,
target_ulong id, start, r3;
PowerPCCPU *newcpu;
CPUPPCState *env;
- PowerPCCPUClass *pcc;
target_ulong lpcr;
+ target_ulong caller_lpcr;
if (nargs != 3 || nret != 1) {
rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
@@ -152,7 +152,6 @@ static void rtas_start_cpu(PowerPCCPU *callcpu, SpaprMachineState *spapr,
}
env = &newcpu->env;
- pcc = POWERPC_CPU_GET_CLASS(newcpu);
if (!CPU(newcpu)->halted) {
rtas_st(rets, 0, RTAS_OUT_HW_ERROR);
@@ -163,10 +162,15 @@ static void rtas_start_cpu(PowerPCCPU *callcpu, SpaprMachineState *spapr,
env->msr = (1ULL << MSR_SF) | (1ULL << MSR_ME);
+ caller_lpcr = callcpu->env.spr[SPR_LPCR];
lpcr = env->spr[SPR_LPCR];
- if (!pcc->interrupts_big_endian(callcpu)) {
- lpcr |= LPCR_ILE;
- }
+
+ /* Set ILE the same way */
+ lpcr = (lpcr & ~LPCR_ILE) | (caller_lpcr & LPCR_ILE);
+
+ /* Set AIL the same way */
+ lpcr = (lpcr & ~LPCR_AIL) | (caller_lpcr & LPCR_AIL);
+
if (env->mmu_model == POWERPC_MMU_3_00) {
/*
* New cpus are expected to start in the same radix/hash mode
--
2.27.0

54
SOURCES/kvm-sungem-switch-to-use-qemu_receive_packet-for-loopbac.patch Normal file
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@ -0,0 +1,54 @@
From 07df0f52c26a3819bc02b4f2970b6735bcf15c5b Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Tue, 29 Jun 2021 03:42:42 -0400
Subject: [PATCH 4/9] sungem: switch to use qemu_receive_packet() for loopback
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210629034247.3286477-5-jmaloy@redhat.com>
Patchwork-id: 101786
O-Subject: [RHEL-8.4.0.z qemu-kvm PATCH v2 4/9] sungem: switch to use qemu_receive_packet() for loopback
Bugzilla: 1932917
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Thomas Huth <thuth@redhat.com>
From: Jason Wang <jasowang@redhat.com>
This patch switches to use qemu_receive_packet() which can detect
reentrancy and return early.
This is intended to address CVE-2021-3416.
Cc: Prasad J Pandit <ppandit@redhat.com>
Cc: qemu-stable@nongnu.org
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit 8c92060d3c0248bd4d515719a35922cd2391b9b4)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/net/sungem.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/net/sungem.c b/hw/net/sungem.c
index f31d41ac5b..8b202b5c15 100644
--- a/hw/net/sungem.c
+++ b/hw/net/sungem.c
@@ -305,7 +305,7 @@ static void sungem_send_packet(SunGEMState *s, const uint8_t *buf,
NetClientState *nc = qemu_get_queue(s->nic);
if (s->macregs[MAC_XIFCFG >> 2] & MAC_XIFCFG_LBCK) {
- nc->info->receive(nc, buf, size);
+ qemu_receive_packet(nc, buf, size);
} else {
qemu_send_packet(nc, buf, size);
}
--
2.27.0

59
SOURCES/kvm-target-i386-add-fast-short-REP-MOV-support.patch Normal file
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@ -0,0 +1,59 @@
From f33880c5f7a4e2cad25c22112da073273c6e2cfb Mon Sep 17 00:00:00 2001
From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Date: Wed, 24 Feb 2021 11:30:35 -0500
Subject: [PATCH 2/4] target/i386: add fast short REP MOV support
RH-Author: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-id: <20210224113037.15599-3-dgilbert@redhat.com>
Patchwork-id: 101201
O-Subject: [RHEL-8.4.0 qemu-kvm PATCH 2/4] target/i386: add fast short REP MOV support
Bugzilla: 1790620
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
RH-Acked-by: Sergio Lopez Pascual <slp@redhat.com>
RH-Acked-by: Peter Xu <peterx@redhat.com>
From: Chenyi Qiang <chenyi.qiang@intel.com>
For CPUs support fast short REP MOV[CPUID.(EAX=7,ECX=0):EDX(bit4)], e.g
Icelake and Tigerlake, expose it to the guest VM.
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Chenyi Qiang <chenyi.qiang@intel.com>
Message-Id: <20200714084148.26690-2-chenyi.qiang@intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
(cherry picked from commit 5cb287d2bd578dfe4897458793b4fce35bc4f744)
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
target/i386/cpu.c | 2 +-
target/i386/cpu.h | 2 ++
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 67dab94aa5..f6a9ed84b3 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1077,7 +1077,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
.type = CPUID_FEATURE_WORD,
.feat_names = {
NULL, NULL, "avx512-4vnniw", "avx512-4fmaps",
- NULL, NULL, NULL, NULL,
+ "fsrm", NULL, NULL, NULL,
"avx512-vp2intersect", NULL, "md-clear", NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL /* pconfig */, NULL,
diff --git a/target/i386/cpu.h b/target/i386/cpu.h
index 8e2e52ed31..f5a4efcec6 100644
--- a/target/i386/cpu.h
+++ b/target/i386/cpu.h
@@ -770,6 +770,8 @@ typedef uint64_t FeatureWordArray[FEATURE_WORDS];
#define CPUID_7_0_EDX_AVX512_4VNNIW (1U << 2)
/* AVX512 Multiply Accumulation Single Precision */
#define CPUID_7_0_EDX_AVX512_4FMAPS (1U << 3)
+/* Fast Short Rep Mov */
+#define CPUID_7_0_EDX_FSRM (1U << 4)
/* AVX512 Vector Pair Intersection to a Pair of Mask Registers */
#define CPUID_7_0_EDX_AVX512_VP2INTERSECT (1U << 8)
/* Speculation Control */
--
2.27.0

53
SOURCES/kvm-tftp-check-tftp_input-buffer-size.patch Normal file
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@ -0,0 +1,53 @@
From 6bd4d80f9274f76eb402ce85aa60729150b39980 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
Date: Thu, 29 Jul 2021 04:56:34 -0400
Subject: [PATCH 09/14] tftp: check tftp_input buffer size
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: <20210708082537.1550263-6-marcandre.lureau@redhat.com>
Patchwork-id: 101823
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 5/8] tftp: check tftp_input buffer size
Bugzilla: 1970843
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Eric Blake <eblake@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
From: Marc-André Lureau <marcandre.lureau@redhat.com>
Fixes: CVE-2021-3595
Fixes: https://gitlab.freedesktop.org/slirp/libslirp/-/issues/46
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1970843
(cherry picked from commit 3f17948137155f025f7809fdc38576d5d2451c3d)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
slirp/src/tftp.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/slirp/src/tftp.c b/slirp/src/tftp.c
index 093c2e06a3..07e8f3cb2f 100644
--- a/slirp/src/tftp.c
+++ b/slirp/src/tftp.c
@@ -444,7 +444,11 @@ static void tftp_handle_error(Slirp *slirp, struct sockaddr_storage *srcsas,
void tftp_input(struct sockaddr_storage *srcsas, struct mbuf *m)
{
- struct tftp_t *tp = (struct tftp_t *)m->m_data;
+ struct tftp_t *tp = mtod_check(m, offsetof(struct tftp_t, x.tp_buf));
+
+ if (tp == NULL) {
+ return;
+ }
switch (ntohs(tp->tp_op)) {
case TFTP_RRQ:
--
2.27.0

263
SOURCES/kvm-tftp-introduce-a-header-structure.patch Normal file
View File

@ -0,0 +1,263 @@
From af72e344459614fcf2746739f05494ef7e691a78 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
Date: Thu, 29 Jul 2021 04:56:36 -0400
Subject: [PATCH 10/14] tftp: introduce a header structure
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: <20210708082537.1550263-7-marcandre.lureau@redhat.com>
Patchwork-id: 101825
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 6/8] tftp: introduce a header structure
Bugzilla: 1970819 1970835 1970843 1970853
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Eric Blake <eblake@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
From: Marc-André Lureau <marcandre.lureau@redhat.com>
Instead of using a composed structure and potentially reading past the
incoming buffer, use a different structure for the header.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
(cherry picked from commit 990163cf3ac86b7875559f49602c4d76f46f6f30)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
slirp/src/tftp.c | 58 +++++++++++++++++++++++++-----------------------
slirp/src/tftp.h | 6 ++++-
2 files changed, 35 insertions(+), 29 deletions(-)
diff --git a/slirp/src/tftp.c b/slirp/src/tftp.c
index 07e8f3cb2f..53e04d0aeb 100644
--- a/slirp/src/tftp.c
+++ b/slirp/src/tftp.c
@@ -50,7 +50,7 @@ static void tftp_session_terminate(struct tftp_session *spt)
}
static int tftp_session_allocate(Slirp *slirp, struct sockaddr_storage *srcsas,
- struct tftp_t *tp)
+ struct tftphdr *hdr)
{
struct tftp_session *spt;
int k;
@@ -75,7 +75,7 @@ found:
memcpy(&spt->client_addr, srcsas, sockaddr_size(srcsas));
spt->fd = -1;
spt->block_size = 512;
- spt->client_port = tp->udp.uh_sport;
+ spt->client_port = hdr->udp.uh_sport;
spt->slirp = slirp;
tftp_session_update(spt);
@@ -84,7 +84,7 @@ found:
}
static int tftp_session_find(Slirp *slirp, struct sockaddr_storage *srcsas,
- struct tftp_t *tp)
+ struct tftphdr *hdr)
{
struct tftp_session *spt;
int k;
@@ -94,7 +94,7 @@ static int tftp_session_find(Slirp *slirp, struct sockaddr_storage *srcsas,
if (tftp_session_in_use(spt)) {
if (sockaddr_equal(&spt->client_addr, srcsas)) {
- if (spt->client_port == tp->udp.uh_sport) {
+ if (spt->client_port == hdr->udp.uh_sport) {
return k;
}
}
@@ -146,13 +146,13 @@ static struct tftp_t *tftp_prep_mbuf_data(struct tftp_session *spt,
}
static void tftp_udp_output(struct tftp_session *spt, struct mbuf *m,
- struct tftp_t *recv_tp)
+ struct tftphdr *hdr)
{
if (spt->client_addr.ss_family == AF_INET6) {
struct sockaddr_in6 sa6, da6;
sa6.sin6_addr = spt->slirp->vhost_addr6;
- sa6.sin6_port = recv_tp->udp.uh_dport;
+ sa6.sin6_port = hdr->udp.uh_dport;
da6.sin6_addr = ((struct sockaddr_in6 *)&spt->client_addr)->sin6_addr;
da6.sin6_port = spt->client_port;
@@ -161,7 +161,7 @@ static void tftp_udp_output(struct tftp_session *spt, struct mbuf *m,
struct sockaddr_in sa4, da4;
sa4.sin_addr = spt->slirp->vhost_addr;
- sa4.sin_port = recv_tp->udp.uh_dport;
+ sa4.sin_port = hdr->udp.uh_dport;
da4.sin_addr = ((struct sockaddr_in *)&spt->client_addr)->sin_addr;
da4.sin_port = spt->client_port;
@@ -183,7 +183,7 @@ static int tftp_send_oack(struct tftp_session *spt, const char *keys[],
tp = tftp_prep_mbuf_data(spt, m);
- tp->tp_op = htons(TFTP_OACK);
+ tp->hdr.tp_op = htons(TFTP_OACK);
for (i = 0; i < nb; i++) {
n += snprintf(tp->x.tp_buf + n, sizeof(tp->x.tp_buf) - n, "%s",
keys[i]) +
@@ -195,7 +195,7 @@ static int tftp_send_oack(struct tftp_session *spt, const char *keys[],
m->m_len = sizeof(struct tftp_t) - (TFTP_BLOCKSIZE_MAX + 2) + n -
sizeof(struct udphdr);
- tftp_udp_output(spt, m, recv_tp);
+ tftp_udp_output(spt, m, &recv_tp->hdr);
return 0;
}
@@ -216,21 +216,21 @@ static void tftp_send_error(struct tftp_session *spt, uint16_t errorcode,
tp = tftp_prep_mbuf_data(spt, m);
- tp->tp_op = htons(TFTP_ERROR);
+ tp->hdr.tp_op = htons(TFTP_ERROR);
tp->x.tp_error.tp_error_code = htons(errorcode);
slirp_pstrcpy((char *)tp->x.tp_error.tp_msg, sizeof(tp->x.tp_error.tp_msg),
msg);
m->m_len = sizeof(struct tftp_t) - (TFTP_BLOCKSIZE_MAX + 2) + 3 +
strlen(msg) - sizeof(struct udphdr);
- tftp_udp_output(spt, m, recv_tp);
+ tftp_udp_output(spt, m, &recv_tp->hdr);
out:
tftp_session_terminate(spt);
}
static void tftp_send_next_block(struct tftp_session *spt,
- struct tftp_t *recv_tp)
+ struct tftphdr *hdr)
{
struct mbuf *m;
struct tftp_t *tp;
@@ -244,7 +244,7 @@ static void tftp_send_next_block(struct tftp_session *spt,
tp = tftp_prep_mbuf_data(spt, m);
- tp->tp_op = htons(TFTP_DATA);
+ tp->hdr.tp_op = htons(TFTP_DATA);
tp->x.tp_data.tp_block_nr = htons((spt->block_nr + 1) & 0xffff);
nobytes = tftp_read_data(spt, spt->block_nr, tp->x.tp_data.tp_buf,
@@ -262,7 +262,7 @@ static void tftp_send_next_block(struct tftp_session *spt,
m->m_len = sizeof(struct tftp_t) - (TFTP_BLOCKSIZE_MAX - nobytes) -
sizeof(struct udphdr);
- tftp_udp_output(spt, m, recv_tp);
+ tftp_udp_output(spt, m, hdr);
if (nobytes == spt->block_size) {
tftp_session_update(spt);
@@ -285,12 +285,12 @@ static void tftp_handle_rrq(Slirp *slirp, struct sockaddr_storage *srcsas,
int nb_options = 0;
/* check if a session already exists and if so terminate it */
- s = tftp_session_find(slirp, srcsas, tp);
+ s = tftp_session_find(slirp, srcsas, &tp->hdr);
if (s >= 0) {
tftp_session_terminate(&slirp->tftp_sessions[s]);
}
- s = tftp_session_allocate(slirp, srcsas, tp);
+ s = tftp_session_allocate(slirp, srcsas, &tp->hdr);
if (s < 0) {
return;
@@ -411,29 +411,29 @@ static void tftp_handle_rrq(Slirp *slirp, struct sockaddr_storage *srcsas,
}
spt->block_nr = 0;
- tftp_send_next_block(spt, tp);
+ tftp_send_next_block(spt, &tp->hdr);
}
static void tftp_handle_ack(Slirp *slirp, struct sockaddr_storage *srcsas,
- struct tftp_t *tp, int pktlen)
+ struct tftphdr *hdr)
{
int s;
- s = tftp_session_find(slirp, srcsas, tp);
+ s = tftp_session_find(slirp, srcsas, hdr);
if (s < 0) {
return;
}
- tftp_send_next_block(&slirp->tftp_sessions[s], tp);
+ tftp_send_next_block(&slirp->tftp_sessions[s], hdr);
}
static void tftp_handle_error(Slirp *slirp, struct sockaddr_storage *srcsas,
- struct tftp_t *tp, int pktlen)
+ struct tftphdr *hdr)
{
int s;
- s = tftp_session_find(slirp, srcsas, tp);
+ s = tftp_session_find(slirp, srcsas, hdr);
if (s < 0) {
return;
@@ -444,23 +444,25 @@ static void tftp_handle_error(Slirp *slirp, struct sockaddr_storage *srcsas,
void tftp_input(struct sockaddr_storage *srcsas, struct mbuf *m)
{
- struct tftp_t *tp = mtod_check(m, offsetof(struct tftp_t, x.tp_buf));
+ struct tftphdr *hdr = mtod_check(m, sizeof(struct tftphdr));
- if (tp == NULL) {
+ if (hdr == NULL) {
return;
}
- switch (ntohs(tp->tp_op)) {
+ switch (ntohs(hdr->tp_op)) {
case TFTP_RRQ:
- tftp_handle_rrq(m->slirp, srcsas, tp, m->m_len);
+ tftp_handle_rrq(m->slirp, srcsas,
+ mtod(m, struct tftp_t *),
+ m->m_len);
break;
case TFTP_ACK:
- tftp_handle_ack(m->slirp, srcsas, tp, m->m_len);
+ tftp_handle_ack(m->slirp, srcsas, hdr);
break;
case TFTP_ERROR:
- tftp_handle_error(m->slirp, srcsas, tp, m->m_len);
+ tftp_handle_error(m->slirp, srcsas, hdr);
break;
}
}
diff --git a/slirp/src/tftp.h b/slirp/src/tftp.h
index c47bb43c7d..021f6cf109 100644
--- a/slirp/src/tftp.h
+++ b/slirp/src/tftp.h
@@ -18,9 +18,13 @@
#define TFTP_FILENAME_MAX 512
#define TFTP_BLOCKSIZE_MAX 1428
-struct tftp_t {
+struct tftphdr {
struct udphdr udp;
uint16_t tp_op;
+} SLIRP_PACKED;
+
+struct tftp_t {
+ struct tftphdr hdr;
union {
struct {
uint16_t tp_block_nr;
--
2.27.0

53
SOURCES/kvm-tx_pkt-switch-to-use-qemu_receive_packet_iov-for-loo.patch Normal file
View File

@ -0,0 +1,53 @@
From 87cacc268f37758553ad93fefa8b312ed0bd2520 Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Tue, 29 Jun 2021 03:42:43 -0400
Subject: [PATCH 5/9] tx_pkt: switch to use qemu_receive_packet_iov() for
loopback
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210629034247.3286477-6-jmaloy@redhat.com>
Patchwork-id: 101788
O-Subject: [RHEL-8.4.0.z qemu-kvm PATCH v2 5/9] tx_pkt: switch to use qemu_receive_packet_iov() for loopback
Bugzilla: 1932917
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Thomas Huth <thuth@redhat.com>
From: Jason Wang <jasowang@redhat.com>
This patch switches to use qemu_receive_receive_iov() which can detect
reentrancy and return early.
This is intended to address CVE-2021-3416.
Cc: Prasad J Pandit <ppandit@redhat.com>
Cc: qemu-stable@nongnu.org
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit 8c552542b81e56ff532dd27ec6e5328954bdda73)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/net/net_tx_pkt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/net/net_tx_pkt.c b/hw/net/net_tx_pkt.c
index 54d4c3bbd0..646cdfaf4d 100644
--- a/hw/net/net_tx_pkt.c
+++ b/hw/net/net_tx_pkt.c
@@ -544,7 +544,7 @@ static inline void net_tx_pkt_sendv(struct NetTxPkt *pkt,
NetClientState *nc, const struct iovec *iov, int iov_cnt)
{
if (pkt->is_loopback) {
- nc->info->receive_iov(nc, iov, iov_cnt);
+ qemu_receive_packet_iov(nc, iov, iov_cnt);
} else {
qemu_sendv_packet(nc, iov, iov_cnt);
}
--
2.27.0

52
SOURCES/kvm-udp-check-upd_input-buffer-size.patch Normal file
View File

@ -0,0 +1,52 @@
From 1b8aa33b218a8ff3e8aa2f1b6875df40fd70f0ed Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
Date: Thu, 29 Jul 2021 04:56:40 -0400
Subject: [PATCH 11/14] udp: check upd_input buffer size
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: <20210708082537.1550263-8-marcandre.lureau@redhat.com>
Patchwork-id: 101826
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 7/8] udp: check upd_input buffer size
Bugzilla: 1970853
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Eric Blake <eblake@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
From: Marc-André Lureau <marcandre.lureau@redhat.com>
Fixes: CVE-2021-3594
Fixes: https://gitlab.freedesktop.org/slirp/libslirp/-/issues/47
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1970853
(cherry picked from commit 74572be49247c8c5feae7c6e0b50c4f569ca9824)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
slirp/src/udp.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/slirp/src/udp.c b/slirp/src/udp.c
index ae23ba4b2a..86142bba14 100644
--- a/slirp/src/udp.c
+++ b/slirp/src/udp.c
@@ -90,7 +90,10 @@ void udp_input(register struct mbuf *m, int iphlen)
/*
* Get IP and UDP header together in first mbuf.
*/
- ip = mtod(m, struct ip *);
+ ip = mtod_check(m, iphlen + sizeof(struct udphdr));
+ if (ip == NULL) {
+ goto bad;
+ }
uh = (struct udphdr *)((char *)ip + iphlen);
/*
--
2.27.0

52
SOURCES/kvm-upd6-check-udp6_input-buffer-size.patch Normal file
View File

@ -0,0 +1,52 @@
From 6808086932ddc83fd748c46fea495e7004299b55 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
Date: Thu, 29 Jul 2021 04:56:31 -0400
Subject: [PATCH 08/14] upd6: check udp6_input buffer size
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: <20210708082537.1550263-5-marcandre.lureau@redhat.com>
Patchwork-id: 101822
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 4/8] upd6: check udp6_input buffer size
Bugzilla: 1970835
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Eric Blake <eblake@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
From: Marc-André Lureau <marcandre.lureau@redhat.com>
Fixes: CVE-2021-3593
Fixes: https://gitlab.freedesktop.org/slirp/libslirp/-/issues/45
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1970835
(cherry picked from commit de71c15de66ba9350bf62c45b05f8fbff166517b)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
slirp/src/udp6.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/slirp/src/udp6.c b/slirp/src/udp6.c
index 6f9486bbca..8c490e4d10 100644
--- a/slirp/src/udp6.c
+++ b/slirp/src/udp6.c
@@ -28,7 +28,10 @@ void udp6_input(struct mbuf *m)
ip = mtod(m, struct ip6 *);
m->m_len -= iphlen;
m->m_data += iphlen;
- uh = mtod(m, struct udphdr *);
+ uh = mtod_check(m, sizeof(struct udphdr));
+ if (uh == NULL) {
+ goto bad;
+ }
m->m_len += iphlen;
m->m_data -= iphlen;
--
2.27.0

128
SOURCES/kvm-vfio-ccw-Connect-the-device-request-notifier.patch Normal file
View File

@ -0,0 +1,128 @@
From db6a782f8b9ba062f195ff504b4d2f93e471fecc Mon Sep 17 00:00:00 2001
From: Thomas Huth <thuth@redhat.com>
Date: Tue, 11 May 2021 11:24:05 -0400
Subject: [PATCH 2/5] vfio-ccw: Connect the device request notifier
RH-Author: Thomas Huth <thuth@redhat.com>
Message-id: <20210511112405.297037-3-thuth@redhat.com>
Patchwork-id: 101536
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 2/2] vfio-ccw: Connect the device request notifier
Bugzilla: 1940450
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
RH-Acked-by: David Hildenbrand <david@redhat.com>
Now that the vfio-ccw code has a notifier interface to request that
a device be unplugged, let's wire that together.
Signed-off-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20210104202057.48048-4-farman@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
(cherry picked from commit b2f96f9e4f5fbc8f2770a436191cb328da4d5350)
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1940450
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/vfio/ccw.c | 40 ++++++++++++++++++++++++++++++++++++----
1 file changed, 36 insertions(+), 4 deletions(-)
diff --git a/hw/vfio/ccw.c b/hw/vfio/ccw.c
index b72a505893..3d450fe1c9 100644
--- a/hw/vfio/ccw.c
+++ b/hw/vfio/ccw.c
@@ -49,6 +49,7 @@ struct VFIOCCWDevice {
struct ccw_crw_region *crw_region;
EventNotifier io_notifier;
EventNotifier crw_notifier;
+ EventNotifier req_notifier;
bool force_orb_pfch;
bool warned_orb_pfch;
};
@@ -287,6 +288,21 @@ static void vfio_ccw_crw_read(VFIOCCWDevice *vcdev)
} while (1);
}
+static void vfio_ccw_req_notifier_handler(void *opaque)
+{
+ VFIOCCWDevice *vcdev = opaque;
+ Error *err = NULL;
+
+ if (!event_notifier_test_and_clear(&vcdev->req_notifier)) {
+ return;
+ }
+
+ qdev_unplug(DEVICE(vcdev), &err);
+ if (err) {
+ warn_reportf_err(err, VFIO_MSG_PREFIX, vcdev->vdev.name);
+ }
+}
+
static void vfio_ccw_crw_notifier_handler(void *opaque)
{
VFIOCCWDevice *vcdev = opaque;
@@ -386,6 +402,10 @@ static void vfio_ccw_register_irq_notifier(VFIOCCWDevice *vcdev,
notifier = &vcdev->crw_notifier;
fd_read = vfio_ccw_crw_notifier_handler;
break;
+ case VFIO_CCW_REQ_IRQ_INDEX:
+ notifier = &vcdev->req_notifier;
+ fd_read = vfio_ccw_req_notifier_handler;
+ break;
default:
error_setg(errp, "vfio: Unsupported device irq(%d)", irq);
return;
@@ -440,6 +460,9 @@ static void vfio_ccw_unregister_irq_notifier(VFIOCCWDevice *vcdev,
case VFIO_CCW_CRW_IRQ_INDEX:
notifier = &vcdev->crw_notifier;
break;
+ case VFIO_CCW_REQ_IRQ_INDEX:
+ notifier = &vcdev->req_notifier;
+ break;
default:
error_report("vfio: Unsupported device irq(%d)", irq);
return;
@@ -657,20 +680,28 @@ static void vfio_ccw_realize(DeviceState *dev, Error **errp)
vfio_ccw_register_irq_notifier(vcdev, VFIO_CCW_IO_IRQ_INDEX, &err);
if (err) {
- goto out_notifier_err;
+ goto out_io_notifier_err;
}
if (vcdev->crw_region) {
vfio_ccw_register_irq_notifier(vcdev, VFIO_CCW_CRW_IRQ_INDEX, &err);
if (err) {
- vfio_ccw_unregister_irq_notifier(vcdev, VFIO_CCW_IO_IRQ_INDEX);
- goto out_notifier_err;
+ goto out_crw_notifier_err;
}
}
+ vfio_ccw_register_irq_notifier(vcdev, VFIO_CCW_REQ_IRQ_INDEX, &err);
+ if (err) {
+ goto out_req_notifier_err;
+ }
+
return;
-out_notifier_err:
+out_req_notifier_err:
+ vfio_ccw_unregister_irq_notifier(vcdev, VFIO_CCW_CRW_IRQ_INDEX);
+out_crw_notifier_err:
+ vfio_ccw_unregister_irq_notifier(vcdev, VFIO_CCW_IO_IRQ_INDEX);
+out_io_notifier_err:
vfio_ccw_put_region(vcdev);
out_region_err:
vfio_ccw_put_device(vcdev);
@@ -692,6 +723,7 @@ static void vfio_ccw_unrealize(DeviceState *dev, Error **errp)
S390CCWDeviceClass *cdc = S390_CCW_DEVICE_GET_CLASS(cdev);
VFIOGroup *group = vcdev->vdev.group;
+ vfio_ccw_unregister_irq_notifier(vcdev, VFIO_CCW_REQ_IRQ_INDEX);
vfio_ccw_unregister_irq_notifier(vcdev, VFIO_CCW_CRW_IRQ_INDEX);
vfio_ccw_unregister_irq_notifier(vcdev, VFIO_CCW_IO_IRQ_INDEX);
vfio_ccw_put_region(vcdev);
--
2.27.0

72
SOURCES/kvm-virtiofsd-Disable-remote-posix-locks-by-default.patch Normal file
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@ -0,0 +1,72 @@
From 3ec945ba7c2649cca13cf6070c6365b1262ad1ec Mon Sep 17 00:00:00 2001
From: Max Reitz <mreitz@redhat.com>
Date: Fri, 6 Aug 2021 11:58:26 -0400
Subject: [PATCH 1/2] virtiofsd: Disable remote posix locks by default
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Max Reitz <mreitz@redhat.com>
Message-id: <20210806115827.740945-2-mreitz@redhat.com>
Patchwork-id: 101970
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 1/2] virtiofsd: Disable remote posix locks by default
Bugzilla: 1967496
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Vivek Goyal <vgoyal@redhat.com>
From: Vivek Goyal <vgoyal@redhat.com>
Right now we enable remote posix locks by default. That means when guest
does a posix lock it sends request to server (virtiofsd). But currently
we only support non-blocking posix lock and return -EOPNOTSUPP for
blocking version.
This means that existing applications which are doing blocking posix
locks get -EOPNOTSUPP and fail. To avoid this, people have been
running virtiosd with option "-o no_posix_lock". For new users it
is still a surprise and trial and error takes them to this option.
Given posix lock implementation is not complete in virtiofsd, disable
it by default. This means that posix locks will work with-in applications
in a guest but not across guests. Anyway we don't support sharing
filesystem among different guests yet in virtiofs so this should
not lead to any kind of surprise or regression and will make life
little easier for virtiofs users.
Reported-by: Aa Aa <jimbothom@yandex.com>
Suggested-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
(cherry picked from commit 88fc107956a5812649e5918e0c092d3f78bb28ad)
Conflicts:
docs/tools/virtiofsd.rst
We do not have virtiofsd.rst downstream (added upstream in
commit 6a7e2bbee5fa), so I dropped that hunk (which effectively
updated the default value in the man page).
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
tools/virtiofsd/passthrough_ll.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c
index cb0992f2db..b47029da89 100644
--- a/tools/virtiofsd/passthrough_ll.c
+++ b/tools/virtiofsd/passthrough_ll.c
@@ -3001,7 +3001,7 @@ int main(int argc, char *argv[])
struct lo_data lo = {
.debug = 0,
.writeback = 0,
- .posix_lock = 1,
+ .posix_lock = 0,
.proc_self_fd = -1,
};
struct lo_map_elem *root_elem;
--
2.27.0

51
SOURCES/kvm-virtiofsd-Fix-the-help-message-of-posix-lock.patch Normal file
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@ -0,0 +1,51 @@
From 6abfb7b3c37015ff901d11f178bc6900deec2acf Mon Sep 17 00:00:00 2001
From: Max Reitz <mreitz@redhat.com>
Date: Fri, 6 Aug 2021 11:58:27 -0400
Subject: [PATCH 2/2] virtiofsd: Fix the help message of posix lock
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Max Reitz <mreitz@redhat.com>
Message-id: <20210806115827.740945-3-mreitz@redhat.com>
Patchwork-id: 101969
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 2/2] virtiofsd: Fix the help message of posix lock
Bugzilla: 1967496
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Vivek Goyal <vgoyal@redhat.com>
From: Jiachen Zhang <zhangjiachen.jaycee@bytedance.com>
The commit 88fc107956a5812649e5918e0c092d3f78bb28ad disabled remote
posix locks by default. But the --help message still says it is enabled
by default. So fix it to output no_posix_lock.
Signed-off-by: Jiachen Zhang <zhangjiachen.jaycee@bytedance.com>
Message-Id: <20201027081558.29904-1-zhangjiachen.jaycee@bytedance.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
(cherry picked from commit 0429eaf518be1d4742356056e6c886b7f9bc9712)
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
tools/virtiofsd/helper.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/virtiofsd/helper.c b/tools/virtiofsd/helper.c
index 5b222ea49b..813d9490e5 100644
--- a/tools/virtiofsd/helper.c
+++ b/tools/virtiofsd/helper.c
@@ -163,7 +163,7 @@ void fuse_cmdline_help(void)
" default: false\n"
" -o posix_lock|no_posix_lock\n"
" enable/disable remote posix lock\n"
- " default: posix_lock\n"
+ " default: no_posix_lock\n"
" -o readdirplus|no_readdirplus\n"
" enable/disable readirplus\n"
" default: readdirplus except with "
--
2.27.0

79
SOURCES/kvm-virtiofsd-Whitelist-fchmod.patch Normal file
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@ -0,0 +1,79 @@
From 181ed1777c3dd50b1ff9907b0a4199e845af1270 Mon Sep 17 00:00:00 2001
From: Max Reitz <mreitz@redhat.com>
Date: Fri, 18 Jun 2021 16:21:17 -0400
Subject: [PATCH 1/4] virtiofsd: Whitelist fchmod
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Max Reitz <mreitz@redhat.com>
Message-id: <20210618162117.97775-2-mreitz@redhat.com>
Patchwork-id: 101719
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH 1/1] virtiofsd: Whitelist fchmod
Bugzilla: 1967914
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Vivek Goyal <vgoyal@redhat.com>
RH-Acked-by: Connor Kuehl <ckuehl@redhat.com>
lo_setattr() invokes fchmod() in a rarely used code path, so it should
be whitelisted or virtiofsd will crash with EBADSYS.
Said code path can be triggered for example as follows:
On the host, in the shared directory, create a file with the sticky bit
set and a security.capability xattr:
(1) # touch foo
(2) # chmod u+s foo
(3) # setcap '' foo
Then in the guest let some process truncate that file after it has
dropped all of its capabilities (at least CAP_FSETID):
int main(int argc, char *argv[])
{
capng_setpid(getpid());
capng_clear(CAPNG_SELECT_BOTH);
capng_updatev(CAPNG_ADD, CAPNG_PERMITTED | CAPNG_EFFECTIVE, 0);
capng_apply(CAPNG_SELECT_BOTH);
ftruncate(open(argv[1], O_RDWR), 0);
}
This will cause the guest kernel to drop the sticky bit (i.e. perform a
mode change) as part of the truncate (where FATTR_FH is set), and that
will cause virtiofsd to invoke fchmod() instead of fchmodat().
(A similar configuration exists further below with futimens() vs.
utimensat(), but the former is not a syscall but just a wrapper for the
latter, so no further whitelisting is required.)
Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1842667
Reported-by: Qian Cai <caiqian@redhat.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200608093111.14942-1-mreitz@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
(cherry picked from commit 63659fe74e76f5c5285466f0c5cfbdca65b3688e)
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
tools/virtiofsd/seccomp.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/virtiofsd/seccomp.c b/tools/virtiofsd/seccomp.c
index bd9e7b083c..3b1522acdd 100644
--- a/tools/virtiofsd/seccomp.c
+++ b/tools/virtiofsd/seccomp.c
@@ -42,6 +42,7 @@ static const int syscall_whitelist[] = {
SCMP_SYS(exit_group),
SCMP_SYS(fallocate),
SCMP_SYS(fchdir),
+ SCMP_SYS(fchmod),
SCMP_SYS(fchmodat),
SCMP_SYS(fchownat),
SCMP_SYS(fcntl),
--
2.27.0

167
SOURCES/kvm-virtiofsd-extract-lo_do_open-from-lo_open.patch Normal file
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@ -0,0 +1,167 @@
From c02ebc7e43f55b9423a065a7c53ba72bdb821c98 Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Tue, 9 Feb 2021 23:14:54 -0500
Subject: [PATCH 1/3] virtiofsd: extract lo_do_open() from lo_open()
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210209231456.1555472-2-jmaloy@redhat.com>
Patchwork-id: 101024
O-Subject: [RHEL-8.4.0 qemu-kvm PATCH 1/3] virtiofsd: extract lo_do_open() from lo_open()
Bugzilla: 1919111
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Greg Kurz <gkurz@redhat.com>
RH-Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
From: Stefan Hajnoczi <stefanha@redhat.com>
Both lo_open() and lo_create() have similar code to open a file. Extract
a common lo_do_open() function from lo_open() that will be used by
lo_create() in a later commit.
Since lo_do_open() does not otherwise need fuse_req_t req, convert
lo_add_fd_mapping() to use struct lo_data *lo instead.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20210204150208.367837-2-stefanha@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
(cherry-picked from commit 8afaaee976965b7fb90ec225a51d60f35c5f173c)
Conflict: update_open_flags() takes fewer arguments in this version
than in upstream. Instead of applying commit e12a0edafeb
("virtiofsd: Add -o allow_direct_io|no_allow_direct_io
options") we keep the old signature, since this seems to
be an unrelated change.
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Jon Maloy <jmaloy.redhat.com>
---
tools/virtiofsd/passthrough_ll.c | 73 ++++++++++++++++++++------------
1 file changed, 46 insertions(+), 27 deletions(-)
diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c
index f41a6b07c8..518ba11c47 100644
--- a/tools/virtiofsd/passthrough_ll.c
+++ b/tools/virtiofsd/passthrough_ll.c
@@ -439,17 +439,17 @@ static void lo_map_remove(struct lo_map *map, size_t key)
}
/* Assumes lo->mutex is held */
-static ssize_t lo_add_fd_mapping(fuse_req_t req, int fd)
+static ssize_t lo_add_fd_mapping(struct lo_data *lo, int fd)
{
struct lo_map_elem *elem;
- elem = lo_map_alloc_elem(&lo_data(req)->fd_map);
+ elem = lo_map_alloc_elem(&lo->fd_map);
if (!elem) {
return -1;
}
elem->fd = fd;
- return elem - lo_data(req)->fd_map.elems;
+ return elem - lo->fd_map.elems;
}
/* Assumes lo->mutex is held */
@@ -1712,6 +1712,38 @@ static void update_open_flags(int writeback, struct fuse_file_info *fi)
fi->flags &= ~O_DIRECT;
}
+static int lo_do_open(struct lo_data *lo, struct lo_inode *inode,
+ struct fuse_file_info *fi)
+{
+ char buf[64];
+ ssize_t fh;
+ int fd;
+
+ update_open_flags(lo->writeback, fi);
+
+ sprintf(buf, "%i", inode->fd);
+ fd = openat(lo->proc_self_fd, buf, fi->flags & ~O_NOFOLLOW);
+ if (fd == -1) {
+ return errno;
+ }
+
+ pthread_mutex_lock(&lo->mutex);
+ fh = lo_add_fd_mapping(lo, fd);
+ pthread_mutex_unlock(&lo->mutex);
+ if (fh == -1) {
+ close(fd);
+ return ENOMEM;
+ }
+
+ fi->fh = fh;
+ if (lo->cache == CACHE_NONE) {
+ fi->direct_io = 1;
+ } else if (lo->cache == CACHE_ALWAYS) {
+ fi->keep_cache = 1;
+ }
+ return 0;
+}
+
static void lo_create(fuse_req_t req, fuse_ino_t parent, const char *name,
mode_t mode, struct fuse_file_info *fi)
{
@@ -1752,7 +1784,7 @@ static void lo_create(fuse_req_t req, fuse_ino_t parent, const char *name,
ssize_t fh;
pthread_mutex_lock(&lo->mutex);
- fh = lo_add_fd_mapping(req, fd);
+ fh = lo_add_fd_mapping(lo, fd);
pthread_mutex_unlock(&lo->mutex);
if (fh == -1) {
close(fd);
@@ -1943,38 +1975,25 @@ static void lo_fsyncdir(fuse_req_t req, fuse_ino_t ino, int datasync,
static void lo_open(fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi)
{
- int fd;
- ssize_t fh;
- char buf[64];
struct lo_data *lo = lo_data(req);
+ struct lo_inode *inode = lo_inode(req, ino);
+ int err;
fuse_log(FUSE_LOG_DEBUG, "lo_open(ino=%" PRIu64 ", flags=%d)\n", ino,
fi->flags);
- update_open_flags(lo->writeback, fi);
-
- sprintf(buf, "%i", lo_fd(req, ino));
- fd = openat(lo->proc_self_fd, buf, fi->flags & ~O_NOFOLLOW);
- if (fd == -1) {
- return (void)fuse_reply_err(req, errno);
- }
-
- pthread_mutex_lock(&lo->mutex);
- fh = lo_add_fd_mapping(req, fd);
- pthread_mutex_unlock(&lo->mutex);
- if (fh == -1) {
- close(fd);
- fuse_reply_err(req, ENOMEM);
+ if (!inode) {
+ fuse_reply_err(req, EBADF);
return;
}
- fi->fh = fh;
- if (lo->cache == CACHE_NONE) {
- fi->direct_io = 1;
- } else if (lo->cache == CACHE_ALWAYS) {
- fi->keep_cache = 1;
+ err = lo_do_open(lo, inode, fi);
+ lo_inode_put(lo, &inode);
+ if (err) {
+ fuse_reply_err(req, err);
+ } else {
+ fuse_reply_open(req, fi);
}
- fuse_reply_open(req, fi);
}
static void lo_release(fuse_req_t req, fuse_ino_t ino,
--
2.18.2

124
SOURCES/kvm-virtiofsd-optionally-return-inode-pointer-from-lo_do.patch Normal file
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@ -0,0 +1,124 @@
From f2c0b07088966c396ddcee54f4bed97cdb01192f Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Tue, 9 Feb 2021 23:14:55 -0500
Subject: [PATCH 2/3] virtiofsd: optionally return inode pointer from
lo_do_lookup()
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210209231456.1555472-3-jmaloy@redhat.com>
Patchwork-id: 101022
O-Subject: [RHEL-8.4.0 qemu-kvm PATCH 2/3] virtiofsd: optionally return inode pointer from lo_do_lookup()
Bugzilla: 1919111
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Greg Kurz <gkurz@redhat.com>
RH-Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
From: Stefan Hajnoczi <stefanha@redhat.com>
lo_do_lookup() finds an existing inode or allocates a new one. It
increments nlookup so that the inode stays alive until the client
releases it.
Existing callers don't need the struct lo_inode so the function doesn't
return it. Extend the function to optionally return the inode. The next
commit will need it.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Message-Id: <20210204150208.367837-3-stefanha@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
(cherry-picked from commit 22d2ece71e533310da31f2857ebc4a00d91968b3)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Jon Maloy <jmaloy.redhat.com>
---
tools/virtiofsd/passthrough_ll.c | 29 +++++++++++++++++++++--------
1 file changed, 21 insertions(+), 8 deletions(-)
diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c
index 518ba11c47..e5bd3d73e4 100644
--- a/tools/virtiofsd/passthrough_ll.c
+++ b/tools/virtiofsd/passthrough_ll.c
@@ -878,11 +878,13 @@ static void posix_locks_value_destroy(gpointer data)
}
/*
- * Increments nlookup and caller must release refcount using
- * lo_inode_put(&parent).
+ * Increments nlookup on the inode on success. unref_inode_lolocked() must be
+ * called eventually to decrement nlookup again. If inodep is non-NULL, the
+ * inode pointer is stored and the caller must call lo_inode_put().
*/
static int lo_do_lookup(fuse_req_t req, fuse_ino_t parent, const char *name,
- struct fuse_entry_param *e)
+ struct fuse_entry_param *e,
+ struct lo_inode **inodep)
{
int newfd;
int res;
@@ -891,6 +893,10 @@ static int lo_do_lookup(fuse_req_t req, fuse_ino_t parent, const char *name,
struct lo_inode *inode = NULL;
struct lo_inode *dir = lo_inode(req, parent);
+ if (inodep) {
+ *inodep = NULL;
+ }
+
/*
* name_to_handle_at() and open_by_handle_at() can reach here with fuse
* mount point in guest, but we don't have its inode info in the
@@ -953,7 +959,14 @@ static int lo_do_lookup(fuse_req_t req, fuse_ino_t parent, const char *name,
pthread_mutex_unlock(&lo->mutex);
}
e->ino = inode->fuse_ino;
- lo_inode_put(lo, &inode);
+
+ /* Transfer ownership of inode pointer to caller or drop it */
+ if (inodep) {
+ *inodep = inode;
+ } else {
+ lo_inode_put(lo, &inode);
+ }
+
lo_inode_put(lo, &dir);
fuse_log(FUSE_LOG_DEBUG, " %lli/%s -> %lli\n", (unsigned long long)parent,
@@ -988,7 +1001,7 @@ static void lo_lookup(fuse_req_t req, fuse_ino_t parent, const char *name)
return;
}
- err = lo_do_lookup(req, parent, name, &e);
+ err = lo_do_lookup(req, parent, name, &e, NULL);
if (err) {
fuse_reply_err(req, err);
} else {
@@ -1098,7 +1111,7 @@ static void lo_mknod_symlink(fuse_req_t req, fuse_ino_t parent,
goto out;
}
- saverr = lo_do_lookup(req, parent, name, &e);
+ saverr = lo_do_lookup(req, parent, name, &e, NULL);
if (saverr) {
goto out;
}
@@ -1599,7 +1612,7 @@ static void lo_do_readdir(fuse_req_t req, fuse_ino_t ino, size_t size,
if (plus) {
if (!is_dot_or_dotdot(name)) {
- err = lo_do_lookup(req, ino, name, &e);
+ err = lo_do_lookup(req, ino, name, &e, NULL);
if (err) {
goto error;
}
@@ -1793,7 +1806,7 @@ static void lo_create(fuse_req_t req, fuse_ino_t parent, const char *name,
}
fi->fh = fh;
- err = lo_do_lookup(req, parent, name, &e);
+ err = lo_do_lookup(req, parent, name, &e, NULL);
}
if (lo->cache == CACHE_NONE) {
fi->direct_io = 1;
--
2.18.2

314
SOURCES/kvm-virtiofsd-prevent-opening-of-special-files-CVE-2020-.patch Normal file
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@ -0,0 +1,314 @@
From cc9a776fba8ec62c862db55753107f19459dafa8 Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Tue, 9 Feb 2021 23:14:56 -0500
Subject: [PATCH 3/3] virtiofsd: prevent opening of special files
(CVE-2020-35517)
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210209231456.1555472-4-jmaloy@redhat.com>
Patchwork-id: 101023
O-Subject: [RHEL-8.4.0 qemu-kvm PATCH 3/3] virtiofsd: prevent opening of special files (CVE-2020-35517)
Bugzilla: 1919111
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Greg Kurz <gkurz@redhat.com>
RH-Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
From: Stefan Hajnoczi <stefanha@redhat.com>
A well-behaved FUSE client does not attempt to open special files with
FUSE_OPEN because they are handled on the client side (e.g. device nodes
are handled by client-side device drivers).
The check to prevent virtiofsd from opening special files is missing in
a few cases, most notably FUSE_OPEN. A malicious client can cause
virtiofsd to open a device node, potentially allowing the guest to
escape. This can be exploited by a modified guest device driver. It is
not exploitable from guest userspace since the guest kernel will handle
special files inside the guest instead of sending FUSE requests.
This patch fixes this issue by introducing the lo_inode_open() function
to check the file type before opening it. This is a short-term solution
because it does not prevent a compromised virtiofsd process from opening
device nodes on the host.
Restructure lo_create() to try O_CREAT | O_EXCL first. Note that O_CREAT
| O_EXCL does not follow symlinks, so O_NOFOLLOW masking is not
necessary here. If the file exists and the user did not specify O_EXCL,
open it via lo_do_open().
Reported-by: Alex Xu <alex@alxu.ca>
Fixes: CVE-2020-35517
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Vivek Goyal <vgoyal@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20210204150208.367837-4-stefanha@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
(cherry picked from commit a3fdbbc7f271bff7d53d0501b29d910ece0b3789)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Jon Maloy <jmaloy.redhat.com>
---
tools/virtiofsd/passthrough_ll.c | 144 ++++++++++++++++++++-----------
1 file changed, 92 insertions(+), 52 deletions(-)
diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c
index e5bd3d73e4..cb0992f2db 100644
--- a/tools/virtiofsd/passthrough_ll.c
+++ b/tools/virtiofsd/passthrough_ll.c
@@ -535,6 +535,38 @@ static int lo_fd(fuse_req_t req, fuse_ino_t ino)
return fd;
}
+/*
+ * Open a file descriptor for an inode. Returns -EBADF if the inode is not a
+ * regular file or a directory.
+ *
+ * Use this helper function instead of raw openat(2) to prevent security issues
+ * when a malicious client opens special files such as block device nodes.
+ * Symlink inodes are also rejected since symlinks must already have been
+ * traversed on the client side.
+ */
+static int lo_inode_open(struct lo_data *lo, struct lo_inode *inode,
+ int open_flags)
+{
+ g_autofree char *fd_str = g_strdup_printf("%d", inode->fd);
+ int fd;
+
+ if (!S_ISREG(inode->filetype) && !S_ISDIR(inode->filetype)) {
+ return -EBADF;
+ }
+
+ /*
+ * The file is a symlink so O_NOFOLLOW must be ignored. We checked earlier
+ * that the inode is not a special file but if an external process races
+ * with us then symlinks are traversed here. It is not possible to escape
+ * the shared directory since it is mounted as "/" though.
+ */
+ fd = openat(lo->proc_self_fd, fd_str, open_flags & ~O_NOFOLLOW);
+ if (fd < 0) {
+ return -errno;
+ }
+ return fd;
+}
+
static void lo_init(void *userdata, struct fuse_conn_info *conn)
{
struct lo_data *lo = (struct lo_data *)userdata;
@@ -788,9 +820,9 @@ static void lo_setattr(fuse_req_t req, fuse_ino_t ino, struct stat *attr,
if (fi) {
truncfd = fd;
} else {
- sprintf(procname, "%i", ifd);
- truncfd = openat(lo->proc_self_fd, procname, O_RDWR);
+ truncfd = lo_inode_open(lo, inode, O_RDWR);
if (truncfd < 0) {
+ errno = -truncfd;
goto out_err;
}
}
@@ -894,7 +926,7 @@ static int lo_do_lookup(fuse_req_t req, fuse_ino_t parent, const char *name,
struct lo_inode *dir = lo_inode(req, parent);
if (inodep) {
- *inodep = NULL;
+ *inodep = NULL; /* in case there is an error */
}
/*
@@ -1725,19 +1757,26 @@ static void update_open_flags(int writeback, struct fuse_file_info *fi)
fi->flags &= ~O_DIRECT;
}
+/*
+ * Open a regular file, set up an fd mapping, and fill out the struct
+ * fuse_file_info for it. If existing_fd is not negative, use that fd instead
+ * opening a new one. Takes ownership of existing_fd.
+ *
+ * Returns 0 on success or a positive errno.
+ */
static int lo_do_open(struct lo_data *lo, struct lo_inode *inode,
- struct fuse_file_info *fi)
+ int existing_fd, struct fuse_file_info *fi)
{
- char buf[64];
ssize_t fh;
- int fd;
+ int fd = existing_fd;
update_open_flags(lo->writeback, fi);
- sprintf(buf, "%i", inode->fd);
- fd = openat(lo->proc_self_fd, buf, fi->flags & ~O_NOFOLLOW);
- if (fd == -1) {
- return errno;
+ if (fd < 0) {
+ fd = lo_inode_open(lo, inode, fi->flags);
+ if (fd < 0) {
+ return -fd;
+ }
}
pthread_mutex_lock(&lo->mutex);
@@ -1760,9 +1799,10 @@ static int lo_do_open(struct lo_data *lo, struct lo_inode *inode,
static void lo_create(fuse_req_t req, fuse_ino_t parent, const char *name,
mode_t mode, struct fuse_file_info *fi)
{
- int fd;
+ int fd = -1;
struct lo_data *lo = lo_data(req);
struct lo_inode *parent_inode;
+ struct lo_inode *inode = NULL;
struct fuse_entry_param e;
int err;
struct lo_cred old = {};
@@ -1788,36 +1828,38 @@ static void lo_create(fuse_req_t req, fuse_ino_t parent, const char *name,
update_open_flags(lo->writeback, fi);
- fd = openat(parent_inode->fd, name, (fi->flags | O_CREAT) & ~O_NOFOLLOW,
- mode);
+ /* Try to create a new file but don't open existing files */
+ fd = openat(parent_inode->fd, name, fi->flags | O_CREAT | O_EXCL, mode);
err = fd == -1 ? errno : 0;
- lo_restore_cred(&old);
- if (!err) {
- ssize_t fh;
+ lo_restore_cred(&old);
- pthread_mutex_lock(&lo->mutex);
- fh = lo_add_fd_mapping(lo, fd);
- pthread_mutex_unlock(&lo->mutex);
- if (fh == -1) {
- close(fd);
- err = ENOMEM;
- goto out;
- }
+ /* Ignore the error if file exists and O_EXCL was not given */
+ if (err && (err != EEXIST || (fi->flags & O_EXCL))) {
+ goto out;
+ }
- fi->fh = fh;
- err = lo_do_lookup(req, parent, name, &e, NULL);
+ err = lo_do_lookup(req, parent, name, &e, &inode);
+ if (err) {
+ goto out;
}
- if (lo->cache == CACHE_NONE) {
- fi->direct_io = 1;
- } else if (lo->cache == CACHE_ALWAYS) {
- fi->keep_cache = 1;
+
+ err = lo_do_open(lo, inode, fd, fi);
+ fd = -1; /* lo_do_open() takes ownership of fd */
+ if (err) {
+ /* Undo lo_do_lookup() nlookup ref */
+ unref_inode_lolocked(lo, inode, 1);
}
out:
+ lo_inode_put(lo, &inode);
lo_inode_put(lo, &parent_inode);
if (err) {
+ if (fd >= 0) {
+ close(fd);
+ }
+
fuse_reply_err(req, err);
} else {
fuse_reply_create(req, &e, fi);
@@ -1831,7 +1873,6 @@ static struct lo_inode_plock *lookup_create_plock_ctx(struct lo_data *lo,
pid_t pid, int *err)
{
struct lo_inode_plock *plock;
- char procname[64];
int fd;
plock =
@@ -1848,12 +1889,10 @@ static struct lo_inode_plock *lookup_create_plock_ctx(struct lo_data *lo,
}
/* Open another instance of file which can be used for ofd locks. */
- sprintf(procname, "%i", inode->fd);
-
/* TODO: What if file is not writable? */
- fd = openat(lo->proc_self_fd, procname, O_RDWR);
- if (fd == -1) {
- *err = errno;
+ fd = lo_inode_open(lo, inode, O_RDWR);
+ if (fd < 0) {
+ *err = -fd;
free(plock);
return NULL;
}
@@ -2000,7 +2039,7 @@ static void lo_open(fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi)
return;
}
- err = lo_do_open(lo, inode, fi);
+ err = lo_do_open(lo, inode, -1, fi);
lo_inode_put(lo, &inode);
if (err) {
fuse_reply_err(req, err);
@@ -2056,39 +2095,40 @@ static void lo_flush(fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi)
static void lo_fsync(fuse_req_t req, fuse_ino_t ino, int datasync,
struct fuse_file_info *fi)
{
+ struct lo_inode *inode = lo_inode(req, ino);
+ struct lo_data *lo = lo_data(req);
int res;
int fd;
- char *buf;
fuse_log(FUSE_LOG_DEBUG, "lo_fsync(ino=%" PRIu64 ", fi=0x%p)\n", ino,
(void *)fi);
- if (!fi) {
- struct lo_data *lo = lo_data(req);
-
- res = asprintf(&buf, "%i", lo_fd(req, ino));
- if (res == -1) {
- return (void)fuse_reply_err(req, errno);
- }
+ if (!inode) {
+ fuse_reply_err(req, EBADF);
+ return;
+ }
- fd = openat(lo->proc_self_fd, buf, O_RDWR);
- free(buf);
- if (fd == -1) {
- return (void)fuse_reply_err(req, errno);
+ if (!fi) {
+ fd = lo_inode_open(lo, inode, O_RDWR);
+ if (fd < 0) {
+ res = -fd;
+ goto out;
}
} else {
fd = lo_fi_fd(req, fi);
}
if (datasync) {
- res = fdatasync(fd);
+ res = fdatasync(fd) == -1 ? errno : 0;
} else {
- res = fsync(fd);
+ res = fsync(fd) == -1 ? errno : 0;
}
if (!fi) {
close(fd);
}
- fuse_reply_err(req, res == -1 ? errno : 0);
+out:
+ lo_inode_put(lo, &inode);
+ fuse_reply_err(req, res);
}
static void lo_read(fuse_req_t req, fuse_ino_t ino, size_t size, off_t offset,
--
2.18.2

63
SOURCES/kvm-x86-cpu-Enable-AVX512_VP2INTERSECT-cpu-feature.patch Normal file
View File

@ -0,0 +1,63 @@
From ad50e0e2d310277f06a9c512fe6e31da183ead6e Mon Sep 17 00:00:00 2001
From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Date: Wed, 24 Feb 2021 11:30:34 -0500
Subject: [PATCH 1/4] x86/cpu: Enable AVX512_VP2INTERSECT cpu feature
RH-Author: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-id: <20210224113037.15599-2-dgilbert@redhat.com>
Patchwork-id: 101203
O-Subject: [RHEL-8.4.0 qemu-kvm PATCH 1/4] x86/cpu: Enable AVX512_VP2INTERSECT cpu feature
Bugzilla: 1790620
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
RH-Acked-by: Sergio Lopez Pascual <slp@redhat.com>
RH-Acked-by: Peter Xu <peterx@redhat.com>
From: Cathy Zhang <cathy.zhang@intel.com>
AVX512_VP2INTERSECT compute vector pair intersection to a pair
of mask registers, which is introduced with intel Tiger Lake,
defining as CPUID.(EAX=7,ECX=0):EDX[bit 08].
Refer to the following release spec:
https://software.intel.com/sites/default/files/managed/c5/15/\
architecture-instruction-set-extensions-programming-reference.pdf
Signed-off-by: Cathy Zhang <cathy.zhang@intel.com>
Message-Id: <1586760758-13638-1-git-send-email-cathy.zhang@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit 353f98c9ad52ff4b8cfe553c90be04f747a14c98)
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
target/i386/cpu.c | 2 +-
target/i386/cpu.h | 2 ++
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index ff39fc9905..67dab94aa5 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1078,7 +1078,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
.feat_names = {
NULL, NULL, "avx512-4vnniw", "avx512-4fmaps",
NULL, NULL, NULL, NULL,
- NULL, NULL, "md-clear", NULL,
+ "avx512-vp2intersect", NULL, "md-clear", NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL /* pconfig */, NULL,
NULL, NULL, NULL, NULL,
diff --git a/target/i386/cpu.h b/target/i386/cpu.h
index f3da25cb8a..8e2e52ed31 100644
--- a/target/i386/cpu.h
+++ b/target/i386/cpu.h
@@ -770,6 +770,8 @@ typedef uint64_t FeatureWordArray[FEATURE_WORDS];
#define CPUID_7_0_EDX_AVX512_4VNNIW (1U << 2)
/* AVX512 Multiply Accumulation Single Precision */
#define CPUID_7_0_EDX_AVX512_4FMAPS (1U << 3)
+/* AVX512 Vector Pair Intersection to a Pair of Mask Registers */
+#define CPUID_7_0_EDX_AVX512_VP2INTERSECT (1U << 8)
/* Speculation Control */
#define CPUID_7_0_EDX_SPEC_CTRL (1U << 26)
/* Single Thread Indirect Branch Predictors */
--
2.27.0

91
SOURCES/kvm-x86-cpu-Populate-SVM-CPUID-feature-bits.patch Normal file
View File

@ -0,0 +1,91 @@
From 655e723a5190206302f6cc4f2e794563b8e1c226 Mon Sep 17 00:00:00 2001
From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Date: Wed, 24 Feb 2021 11:30:36 -0500
Subject: [PATCH 3/4] x86/cpu: Populate SVM CPUID feature bits
RH-Author: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-id: <20210224113037.15599-4-dgilbert@redhat.com>
Patchwork-id: 101200
O-Subject: [RHEL-8.4.0 qemu-kvm PATCH 3/4] x86/cpu: Populate SVM CPUID feature bits
Bugzilla: 1790620
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
RH-Acked-by: Sergio Lopez Pascual <slp@redhat.com>
RH-Acked-by: Peter Xu <peterx@redhat.com>
From: Wei Huang <wei.huang2@amd.com>
Newer AMD CPUs will add CPUID_0x8000000A_EDX[28] bit, which indicates
that SVM instructions (VMRUN/VMSAVE/VMLOAD) will trigger #VMEXIT before
CPU checking their EAX against reserved memory regions. This change will
allow the hypervisor to avoid intercepting #GP and emulating SVM
instructions. KVM turns on this CPUID bit for nested VMs. In order to
support it, let us populate this bit, along with other SVM feature bits,
in FEAT_SVM.
Signed-off-by: Wei Huang <wei.huang2@amd.com>
Message-Id: <20210126202456.589932-1-wei.huang2@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit 5447089c2b3b084b51670af36fc86ee3979e04be)
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
target/i386/cpu.c | 6 +++---
target/i386/cpu.h | 24 ++++++++++++++----------
2 files changed, 17 insertions(+), 13 deletions(-)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index f6a9ed84b3..7227c803c3 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1026,11 +1026,11 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
"npt", "lbrv", "svm-lock", "nrip-save",
"tsc-scale", "vmcb-clean", "flushbyasid", "decodeassists",
NULL, NULL, "pause-filter", NULL,
- "pfthreshold", NULL, NULL, NULL,
- NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL,
+ "pfthreshold", "avic", NULL, "v-vmsave-vmload",
+ "vgif", NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
+ "svme-addr-chk", NULL, NULL, NULL,
},
.cpuid = { .eax = 0x8000000A, .reg = R_EDX, },
.tcg_features = TCG_SVM_FEATURES,
diff --git a/target/i386/cpu.h b/target/i386/cpu.h
index f5a4efcec6..e1b67910c2 100644
--- a/target/i386/cpu.h
+++ b/target/i386/cpu.h
@@ -667,16 +667,20 @@ typedef uint64_t FeatureWordArray[FEATURE_WORDS];
#define CPUID_EXT3_PERFCORE (1U << 23)
#define CPUID_EXT3_PERFNB (1U << 24)
-#define CPUID_SVM_NPT (1U << 0)
-#define CPUID_SVM_LBRV (1U << 1)
-#define CPUID_SVM_SVMLOCK (1U << 2)
-#define CPUID_SVM_NRIPSAVE (1U << 3)
-#define CPUID_SVM_TSCSCALE (1U << 4)
-#define CPUID_SVM_VMCBCLEAN (1U << 5)
-#define CPUID_SVM_FLUSHASID (1U << 6)
-#define CPUID_SVM_DECODEASSIST (1U << 7)
-#define CPUID_SVM_PAUSEFILTER (1U << 10)
-#define CPUID_SVM_PFTHRESHOLD (1U << 12)
+#define CPUID_SVM_NPT (1U << 0)
+#define CPUID_SVM_LBRV (1U << 1)
+#define CPUID_SVM_SVMLOCK (1U << 2)
+#define CPUID_SVM_NRIPSAVE (1U << 3)
+#define CPUID_SVM_TSCSCALE (1U << 4)
+#define CPUID_SVM_VMCBCLEAN (1U << 5)
+#define CPUID_SVM_FLUSHASID (1U << 6)
+#define CPUID_SVM_DECODEASSIST (1U << 7)
+#define CPUID_SVM_PAUSEFILTER (1U << 10)
+#define CPUID_SVM_PFTHRESHOLD (1U << 12)
+#define CPUID_SVM_AVIC (1U << 13)
+#define CPUID_SVM_V_VMSAVE_VMLOAD (1U << 15)
+#define CPUID_SVM_VGIF (1U << 16)
+#define CPUID_SVM_SVME_ADDR_CHK (1U << 28)
/* Support RDFSBASE/RDGSBASE/WRFSBASE/WRGSBASE */
#define CPUID_7_0_EBX_FSGSBASE (1U << 0)
--
2.27.0

76
SOURCES/kvm-xhci-fix-valid.max_access_size-to-access-address-reg.patch Normal file
View File

@ -0,0 +1,76 @@
From f38f51d422e82d1241b678960dd6a033ffa398da Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Wed, 21 Apr 2021 22:30:05 -0400
Subject: [PATCH 6/7] xhci: fix valid.max_access_size to access address
registers
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210421223006.19650-6-jmaloy@redhat.com>
Patchwork-id: 101483
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH v2 5/6] xhci: fix valid.max_access_size to access address registers
Bugzilla: 1842478
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
From: Laurent Vivier <lvivier@redhat.com>
QEMU XHCI advertises AC64 (64-bit addressing) but doesn't allow
64-bit mode access in "runtime" and "operational" MemoryRegionOps.
Set the max_access_size based on sizeof(dma_addr_t) as AC64 is set.
XHCI specs:
"If the xHC supports 64-bit addressing (AC64 = ‘1’), then software
should write 64-bit registers using only Qword accesses. If a
system is incapable of issuing Qword accesses, then writes to the
64-bit address fields shall be performed using 2 Dword accesses;
low Dword-first, high-Dword second. If the xHC supports 32-bit
addressing (AC64 = ‘0’), then the high Dword of registers containing
64-bit address fields are unused and software should write addresses
using only Dword accesses"
The problem has been detected with SLOF, as linux kernel always accesses
registers using 32-bit access even if AC64 is set and revealed by
5d971f9e6725 ("memory: Revert "memory: accept mismatching sizes in memory_region_access_valid"")
Suggested-by: Alexey Kardashevskiy <aik@au1.ibm.com>
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Message-id: 20200721083322.90651-1-lvivier@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
(cherry picked from commit 8e67fda2dd6202ccec093fda561107ba14830a17)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/usb/hcd-xhci.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c
index 646c78cde9..ab449bb003 100644
--- a/hw/usb/hcd-xhci.c
+++ b/hw/usb/hcd-xhci.c
@@ -3183,7 +3183,7 @@ static const MemoryRegionOps xhci_oper_ops = {
.read = xhci_oper_read,
.write = xhci_oper_write,
.valid.min_access_size = 4,
- .valid.max_access_size = 4,
+ .valid.max_access_size = sizeof(dma_addr_t),
.endianness = DEVICE_LITTLE_ENDIAN,
};
@@ -3199,7 +3199,7 @@ static const MemoryRegionOps xhci_runtime_ops = {
.read = xhci_runtime_read,
.write = xhci_runtime_write,
.valid.min_access_size = 4,
- .valid.max_access_size = 4,
+ .valid.max_access_size = sizeof(dma_addr_t),
.endianness = DEVICE_LITTLE_ENDIAN,
};
--
2.27.0

293
SPECS/qemu-kvm.spec
View File

@ -61,13 +61,13 @@ Requires: %{name}-block-ssh = %{epoch}:%{version}-%{release}
# Macro to properly setup RHEL/RHEV conflict handling
%define rhev_ma_conflicts() \
Obsoletes: %1-ma \
Obsoletes: %1-rhev
Obsoletes: %1-ma <= %{epoch}:%{version}-%{release} \
Obsoletes: %1-rhev <= %{epoch}:%{version}-%{release}
Summary: QEMU is a machine emulator and virtualizer
Name: qemu-kvm
Version: 4.2.0
Release: 44%{?dist}
Release: 58%{?dist}
# Epoch because we pushed a qemu-1.0 package. AIUI this can't ever be dropped
Epoch: 15
License: GPLv2 and GPLv2+ and CC-BY
@ -1112,6 +1112,140 @@ Patch479: kvm-block-Require-aligned-image-size-to-avoid-assertion-.patch
Patch480: kvm-file-posix-Allow-byte-aligned-O_DIRECT-with-NFS.patch
# For bz#1912974 - CVE-2020-11947 virt:rhel/qemu-kvm: QEMU: heap buffer overflow in iscsi_aio_ioctl_cb() in block/iscsi.c may lead to information disclosure [rhel-8]
Patch481: kvm-block-iscsi-fix-heap-buffer-overflow-in-iscsi_aio_io.patch
# For bz#1919111 - CVE-2020-35517 virt:rhel/qemu-kvm: QEMU: virtiofsd: potential privileged host device access from guest [rhel-8.4.0]
Patch482: kvm-virtiofsd-extract-lo_do_open-from-lo_open.patch
# For bz#1919111 - CVE-2020-35517 virt:rhel/qemu-kvm: QEMU: virtiofsd: potential privileged host device access from guest [rhel-8.4.0]
Patch483: kvm-virtiofsd-optionally-return-inode-pointer-from-lo_do.patch
# For bz#1919111 - CVE-2020-35517 virt:rhel/qemu-kvm: QEMU: virtiofsd: potential privileged host device access from guest [rhel-8.4.0]
Patch484: kvm-virtiofsd-prevent-opening-of-special-files-CVE-2020-.patch
# For bz#1912891 - [ppc64le] --disk cdimage.iso,bus=usb fails to boot
Patch486: kvm-spapr-Adjust-firmware-path-of-PCI-devices.patch
# For bz#1790620 - [RFE] AMD Milan - Add KVM/support for EPYC-Milan CPU Model - Slow Train
Patch487: kvm-x86-cpu-Enable-AVX512_VP2INTERSECT-cpu-feature.patch
# For bz#1790620 - [RFE] AMD Milan - Add KVM/support for EPYC-Milan CPU Model - Slow Train
Patch488: kvm-target-i386-add-fast-short-REP-MOV-support.patch
# For bz#1790620 - [RFE] AMD Milan - Add KVM/support for EPYC-Milan CPU Model - Slow Train
Patch489: kvm-x86-cpu-Populate-SVM-CPUID-feature-bits.patch
# For bz#1790620 - [RFE] AMD Milan - Add KVM/support for EPYC-Milan CPU Model - Slow Train
Patch490: kvm-i386-Add-the-support-for-AMD-EPYC-3rd-generation-pro.patch
# For bz#1917451 - CVE-2020-29443 virt:rhel/qemu-kvm: QEMU: ide: atapi: OOB access while processing read commands [rhel-8.4.0]
Patch491: kvm-ide-atapi-check-logical-block-address-and-read-size-.patch
# For bz#1892350 - CVE-2020-27617 virt:rhel/qemu-kvm: QEMU: net: an assert failure via eth_get_gso_type [rhel-8.5.0]
Patch492: kvm-net-remove-an-assert-call-in-eth_get_gso_type.patch
# For bz#1930092 - CVE-2021-20257 virt:rhel/qemu-kvm: QEMU: net: e1000: infinite loop while processing transmit descriptors [rhel-8.5.0]
Patch493: kvm-e1000-fail-early-for-evil-descriptor.patch
# For bz#1859175 - CVE-2020-15859 virt:rhel/qemu-kvm: QEMU: net: e1000e: use-after-free while sending packets [rhel-8]
Patch494: kvm-net-forbid-the-reentrant-RX.patch
# For bz#1855250 - qemu-img convert uses possibly slow pre-zeroing on block storage
Patch495: kvm-qemu-img-convert-Don-t-pre-zero-images.patch
# For bz#1932823 - after upgrade from 4.3 to 4.4 audio stops working in guests after couple of seconds
Patch496: kvm-audio-audio_generic_get_buffer_in-should-honor-size.patch
# For bz#1925430 - CVE-2021-20221 virt:rhel/qemu-kvm: qemu: out-of-bound heap buffer access via an interrupt ID field [rhel-8.5.0]
Patch497: kvm-hw-intc-arm_gic-Fix-interrupt-ID-in-GICD_SGIR-regist.patch
# For bz#1842478 - CVE-2020-13754 virt:rhel/qemu-kvm: QEMU: msix: OOB access during mmio operations may lead to DoS [rhel-8.5.0]
Patch498: kvm-libqos-usb-hcd-ehci-use-32-bit-write-for-config-regi.patch
# For bz#1842478 - CVE-2020-13754 virt:rhel/qemu-kvm: QEMU: msix: OOB access during mmio operations may lead to DoS [rhel-8.5.0]
Patch499: kvm-libqos-pci-pc-use-32-bit-write-for-EJ-register.patch
# For bz#1842478 - CVE-2020-13754 virt:rhel/qemu-kvm: QEMU: msix: OOB access during mmio operations may lead to DoS [rhel-8.5.0]
Patch500: kvm-memory-Revert-memory-accept-mismatching-sizes-in-mem.patch
# For bz#1842478 - CVE-2020-13754 virt:rhel/qemu-kvm: QEMU: msix: OOB access during mmio operations may lead to DoS [rhel-8.5.0]
Patch501: kvm-acpi-accept-byte-and-word-access-to-core-ACPI-regist.patch
# For bz#1842478 - CVE-2020-13754 virt:rhel/qemu-kvm: QEMU: msix: OOB access during mmio operations may lead to DoS [rhel-8.5.0]
Patch502: kvm-xhci-fix-valid.max_access_size-to-access-address-reg.patch
# For bz#1842478 - CVE-2020-13754 virt:rhel/qemu-kvm: QEMU: msix: OOB access during mmio operations may lead to DoS [rhel-8.5.0]
Patch503: kvm-softmmu-memory-Log-invalid-memory-accesses.patch
# For bz#1940450 - RHEL8.5 - Mediated Device already in use by same domain we are booting (vfio-ccw/Multipath Testing) (kvm) - qemu-kvm part (also has kernel and libvirt parts)
Patch504: kvm-linux-headers-Add-VFIO_CCW_REQ_IRQ_INDEX.patch
# For bz#1940450 - RHEL8.5 - Mediated Device already in use by same domain we are booting (vfio-ccw/Multipath Testing) (kvm) - qemu-kvm part (also has kernel and libvirt parts)
Patch505: kvm-vfio-ccw-Connect-the-device-request-notifier.patch
# For bz#1942880 - RHEL8.4 Nightly[0322] - KVM guest fails to find zipl boot menu index (qemu-kvm)
Patch506: kvm-pc-bios-s390-ccw-fix-off-by-one-error.patch
# For bz#1942880 - RHEL8.4 Nightly[0322] - KVM guest fails to find zipl boot menu index (qemu-kvm)
Patch507: kvm-pc-bios-s390-ccw-break-loop-if-a-null-block-number-i.patch
# For bz#1942880 - RHEL8.4 Nightly[0322] - KVM guest fails to find zipl boot menu index (qemu-kvm)
Patch508: kvm-pc-bios-s390-ccw-don-t-try-to-read-the-next-block-if.patch
# For bz#1877163 - [FJ 8.3 Bug] The progress bar of the "virt-clone --nonsparse" command shows the progress rate exceeding 100%.
Patch509: kvm-file-posix-Mitigate-file-fragmentation-with-extent-s.patch
# For bz#1944861 - Qemu-img convert fails when source image is on gpfs
Patch510: kvm-block-file-posix-Fix-problem-with-fallocate-PUNCH_HO.patch
# For bz#1969768 - [ppc64le] Hotplug vcpu device hit call trace:[qemu output] KVM: unknown exit, hardware reason 7fff9ce87ed8
Patch511: kvm-spapr-Remove-stale-comment-about-power-saving-LPCR-b.patch
# For bz#1969768 - [ppc64le] Hotplug vcpu device hit call trace:[qemu output] KVM: unknown exit, hardware reason 7fff9ce87ed8
Patch512: kvm-spapr-Set-LPCR-to-current-AIL-mode-when-starting-a-n.patch
# For bz#1967914 - [virtio-fs] virtiofsd quit when coping file to a folder in virtio-fs mounted volume(windows guest)
Patch513: kvm-virtiofsd-Whitelist-fchmod.patch
# For bz#1957866 - RHEL8.4 - EEH capability disabled on KVM guest and recovery of PCI passthru device fails(CX5 / mlx5_core) (qemu-kvm)
Patch514: kvm-spapr-Fix-EEH-capability-issue-on-KVM-guest-for-PCI-.patch
# For bz#1970912 - Deployment fails with "Invalid or missing agent token received"
Patch515: kvm-Compress-lines-for-immediate-return.patch
# For bz#1970912 - Deployment fails with "Invalid or missing agent token received"
Patch516: kvm-file-posix-Handle-EINVAL-fallocate-return-value.patch
# For bz#1932917 - CVE-2021-3416 virt:rhel/qemu-kvm: QEMU: net: infinite loop in loopback mode may lead to stack overflow
Patch517: kvm-net-introduce-qemu_receive_packet.patch
# For bz#1932917 - CVE-2021-3416 virt:rhel/qemu-kvm: QEMU: net: infinite loop in loopback mode may lead to stack overflow
Patch518: kvm-e1000-switch-to-use-qemu_receive_packet-for-loopback.patch
# For bz#1932917 - CVE-2021-3416 virt:rhel/qemu-kvm: QEMU: net: infinite loop in loopback mode may lead to stack overflow
Patch519: kvm-dp8393x-switch-to-use-qemu_receive_packet-for-loopba.patch
# For bz#1932917 - CVE-2021-3416 virt:rhel/qemu-kvm: QEMU: net: infinite loop in loopback mode may lead to stack overflow
Patch520: kvm-sungem-switch-to-use-qemu_receive_packet-for-loopbac.patch
# For bz#1932917 - CVE-2021-3416 virt:rhel/qemu-kvm: QEMU: net: infinite loop in loopback mode may lead to stack overflow
Patch521: kvm-tx_pkt-switch-to-use-qemu_receive_packet_iov-for-loo.patch
# For bz#1932917 - CVE-2021-3416 virt:rhel/qemu-kvm: QEMU: net: infinite loop in loopback mode may lead to stack overflow
Patch522: kvm-rtl8139-switch-to-use-qemu_receive_packet-for-loopba.patch
# For bz#1932917 - CVE-2021-3416 virt:rhel/qemu-kvm: QEMU: net: infinite loop in loopback mode may lead to stack overflow
Patch523: kvm-pcnet-switch-to-use-qemu_receive_packet-for-loopback.patch
# For bz#1932917 - CVE-2021-3416 virt:rhel/qemu-kvm: QEMU: net: infinite loop in loopback mode may lead to stack overflow
Patch524: kvm-cadence_gem-switch-to-use-qemu_receive_packet-for-lo.patch
# For bz#1932917 - CVE-2021-3416 virt:rhel/qemu-kvm: QEMU: net: infinite loop in loopback mode may lead to stack overflow
Patch525: kvm-lan9118-switch-to-use-qemu_receive_packet-for-loopba.patch
# For bz#1967716 - RFE: rebuild guest agent to include public ssh injection api support
Patch526: kvm-glib-compat-add-g_unix_get_passwd_entry_qemu.patch
# For bz#1967716 - RFE: rebuild guest agent to include public ssh injection api support
Patch527: kvm-qga-add-ssh-add-remove-authorized-keys.patch
# For bz#1967716 - RFE: rebuild guest agent to include public ssh injection api support
Patch528: kvm-qga-add-reset-argument-to-ssh-add-authorized-keys.patch
# For bz#1967716 - RFE: rebuild guest agent to include public ssh injection api support
Patch529: kvm-qga-add-ssh-get-authorized-keys.patch
# For bz#1970819 - CVE-2021-3592 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (bootp) [rhel-8]
# For bz#1970835 - CVE-2021-3593 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (udp6) [rhel-8]
# For bz#1970843 - CVE-2021-3595 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (tftp) [rhel-8]
# For bz#1970853 - CVE-2021-3594 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (udp) [rhel-8]
Patch530: kvm-Add-mtod_check.patch
# For bz#1970819 - CVE-2021-3592 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (bootp) [rhel-8]
# For bz#1970835 - CVE-2021-3593 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (udp6) [rhel-8]
# For bz#1970843 - CVE-2021-3595 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (tftp) [rhel-8]
# For bz#1970853 - CVE-2021-3594 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (udp) [rhel-8]
Patch531: kvm-bootp-limit-vendor-specific-area-to-input-packet-mem.patch
# For bz#1970819 - CVE-2021-3592 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (bootp) [rhel-8]
Patch532: kvm-bootp-check-bootp_input-buffer-size.patch
# For bz#1970835 - CVE-2021-3593 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (udp6) [rhel-8]
Patch533: kvm-upd6-check-udp6_input-buffer-size.patch
# For bz#1970843 - CVE-2021-3595 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (tftp) [rhel-8]
Patch534: kvm-tftp-check-tftp_input-buffer-size.patch
# For bz#1970819 - CVE-2021-3592 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (bootp) [rhel-8]
# For bz#1970835 - CVE-2021-3593 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (udp6) [rhel-8]
# For bz#1970843 - CVE-2021-3595 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (tftp) [rhel-8]
# For bz#1970853 - CVE-2021-3594 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (udp) [rhel-8]
Patch535: kvm-tftp-introduce-a-header-structure.patch
# For bz#1970853 - CVE-2021-3594 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (udp) [rhel-8]
Patch536: kvm-udp-check-upd_input-buffer-size.patch
# For bz#1970819 - CVE-2021-3592 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (bootp) [rhel-8]
# For bz#1970835 - CVE-2021-3593 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (udp6) [rhel-8]
# For bz#1970843 - CVE-2021-3595 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (tftp) [rhel-8]
# For bz#1970853 - CVE-2021-3594 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (udp) [rhel-8]
Patch537: kvm-Fix-DHCP-broken-in-libslirp-v4.6.0.patch
# For bz#1982134 - QEMU core dump while booting guest with a non-exist fd on tap
Patch538: kvm-net-check-if-the-file-descriptor-is-valid-before-usi.patch
# For bz#1982134 - QEMU core dump while booting guest with a non-exist fd on tap
Patch539: kvm-net-detect-errors-from-probing-vnet-hdr-flag-for-TAP.patch
# For bz#1969848 - qemu-img convert hangs on aarch64
Patch540: kvm-aio-wait-delegate-polling-of-main-AioContext-if-BQL-.patch
# For bz#1969848 - qemu-img convert hangs on aarch64
Patch541: kvm-async-use-explicit-memory-barriers.patch
# For bz#1967496 - [virtio-fs] nfs/xfstest generic/089 generic/478 generic/632 failed
Patch542: kvm-virtiofsd-Disable-remote-posix-locks-by-default.patch
# For bz#1967496 - [virtio-fs] nfs/xfstest generic/089 generic/478 generic/632 failed
Patch543: kvm-virtiofsd-Fix-the-help-message-of-posix-lock.patch
BuildRequires: wget
BuildRequires: rpm-build
@ -1486,7 +1620,7 @@ buildldflags="VL_LDFLAGS=-Wl,--build-id"
--audio-drv-list= \
--block-drv-ro-whitelist=vmdk,vhdx,vpc,https,ssh \
--with-coroutine=ucontext \
--tls-priority=NORMAL \
--tls-priority=@QEMU,SYSTEM \
--disable-bluez \
--disable-brlapi \
--enable-cap-ng \
@ -2060,6 +2194,157 @@ useradd -r -u 107 -g qemu -G kvm -d / -s /sbin/nologin \
%changelog
* Wed Aug 18 2021 Danilo Cesar Lemes de Paula <ddepaula@redhat.com> - 4.2.0-58.el8
- kvm-virtiofsd-Disable-remote-posix-locks-by-default.patch [bz#1967496]
- kvm-virtiofsd-Fix-the-help-message-of-posix-lock.patch [bz#1967496]
- Resolves: bz#1967496
([virtio-fs] nfs/xfstest generic/089 generic/478 generic/632 failed)
* Wed Aug 04 2021 Miroslav Rezanina <mrezanin@redhat.com> - 4.2.0-57
- kvm-aio-wait-delegate-polling-of-main-AioContext-if-BQL-.patch [bz#1969848]
- kvm-async-use-explicit-memory-barriers.patch [bz#1969848]
- Resolves: bz#1969848
(qemu-img convert hangs on aarch64)
* Thu Jul 29 2021 Miroslav Rezanina <mrezanin@redhat.com> - 4.2.0-56
- kvm-glib-compat-add-g_unix_get_passwd_entry_qemu.patch [bz#1967716]
- kvm-qga-add-ssh-add-remove-authorized-keys.patch [bz#1967716]
- kvm-qga-add-reset-argument-to-ssh-add-authorized-keys.patch [bz#1967716]
- kvm-qga-add-ssh-get-authorized-keys.patch [bz#1967716]
- kvm-Add-mtod_check.patch [bz#1970819 bz#1970835 bz#1970843 bz#1970853]
- kvm-bootp-limit-vendor-specific-area-to-input-packet-mem.patch [bz#1970819 bz#1970835 bz#1970843 bz#1970853]
- kvm-bootp-check-bootp_input-buffer-size.patch [bz#1970819]
- kvm-upd6-check-udp6_input-buffer-size.patch [bz#1970835]
- kvm-tftp-check-tftp_input-buffer-size.patch [bz#1970843]
- kvm-tftp-introduce-a-header-structure.patch [bz#1970819 bz#1970835 bz#1970843 bz#1970853]
- kvm-udp-check-upd_input-buffer-size.patch [bz#1970853]
- kvm-Fix-DHCP-broken-in-libslirp-v4.6.0.patch [bz#1970819 bz#1970835 bz#1970843 bz#1970853]
- kvm-net-check-if-the-file-descriptor-is-valid-before-usi.patch [bz#1982134]
- kvm-net-detect-errors-from-probing-vnet-hdr-flag-for-TAP.patch [bz#1982134]
- Resolves: bz#1967716
(RFE: rebuild guest agent to include public ssh injection api support)
- Resolves: bz#1970819
(CVE-2021-3592 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (bootp) [rhel-8])
- Resolves: bz#1970835
(CVE-2021-3593 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (udp6) [rhel-8])
- Resolves: bz#1970843
(CVE-2021-3595 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (tftp) [rhel-8])
- Resolves: bz#1970853
(CVE-2021-3594 virt:rhel/qemu-kvm: QEMU: slirp: invalid pointer initialization may lead to information disclosure (udp) [rhel-8])
- Resolves: bz#1982134
(QEMU core dump while booting guest with a non-exist fd on tap)
* Fri Jul 23 2021 Danilo Cesar Lemes de Paula <ddepaula@redhat.com> - 4.2.0-55.el8
- kvm-net-introduce-qemu_receive_packet.patch [bz#1932917]
- kvm-e1000-switch-to-use-qemu_receive_packet-for-loopback.patch [bz#1932917]
- kvm-dp8393x-switch-to-use-qemu_receive_packet-for-loopba.patch [bz#1932917]
- kvm-sungem-switch-to-use-qemu_receive_packet-for-loopbac.patch [bz#1932917]
- kvm-tx_pkt-switch-to-use-qemu_receive_packet_iov-for-loo.patch [bz#1932917]
- kvm-rtl8139-switch-to-use-qemu_receive_packet-for-loopba.patch [bz#1932917]
- kvm-pcnet-switch-to-use-qemu_receive_packet-for-loopback.patch [bz#1932917]
- kvm-cadence_gem-switch-to-use-qemu_receive_packet-for-lo.patch [bz#1932917]
- kvm-lan9118-switch-to-use-qemu_receive_packet-for-loopba.patch [bz#1932917]
- Resolves: bz#1932917
(CVE-2021-3416 virt:rhel/qemu-kvm: QEMU: net: infinite loop in loopback mode may lead to stack overflow)
* Thu Jul 22 2021 Danilo Cesar Lemes de Paula <ddepaula@redhat.com> - 4.2.0-54.el8
- kvm-redhat-Fix-unversioned-Obsoletes-warning.patch [bz#1967329]
- Resolves: bz#1967329
(Make qemu-kvm use versioned obsoletes for qemu-kvm-ma and qemu-kvm-rhev)
* Fri Jul 02 2021 Danilo Cesar Lemes de Paula <ddepaula@redhat.com> - 4.2.0-53.el8
- kvm-virtiofsd-Whitelist-fchmod.patch [bz#1967914]
- kvm-spapr-Fix-EEH-capability-issue-on-KVM-guest-for-PCI-.patch [bz#1957866]
- kvm-Compress-lines-for-immediate-return.patch [bz#1970912]
- kvm-file-posix-Handle-EINVAL-fallocate-return-value.patch [bz#1970912]
- Resolves: bz#1967914
([virtio-fs] virtiofsd quit when coping file to a folder in virtio-fs mounted volume(windows guest))
- Resolves: bz#1957866
(RHEL8.4 - EEH capability disabled on KVM guest and recovery of PCI passthru device fails(CX5 / mlx5_core) (qemu-kvm))
- Resolves: bz#1970912
(Deployment fails with "Invalid or missing agent token received")
* Fri Jun 11 2021 Danilo Cesar Lemes de Paula <ddepaula@redhat.com> - 4.2.0-52.el8
- kvm-file-posix-Mitigate-file-fragmentation-with-extent-s.patch [bz#1877163]
- kvm-block-file-posix-Fix-problem-with-fallocate-PUNCH_HO.patch [bz#1944861]
- kvm-spapr-Remove-stale-comment-about-power-saving-LPCR-b.patch [bz#1969768]
- kvm-spapr-Set-LPCR-to-current-AIL-mode-when-starting-a-n.patch [bz#1969768]
- Resolves: bz#1877163
([FJ 8.3 Bug] The progress bar of the "virt-clone --nonsparse" command shows the progress rate exceeding 100%.)
- Resolves: bz#1944861
(Qemu-img convert fails when source image is on gpfs)
- Resolves: bz#1969768
([ppc64le] Hotplug vcpu device hit call trace:[qemu output] KVM: unknown exit, hardware reason 7fff9ce87ed8)
* Tue May 25 2021 Danilo Cesar Lemes de Paula <ddepaula@redhat.com> - 4.2.0-51.el8
- kvm-linux-headers-Add-VFIO_CCW_REQ_IRQ_INDEX.patch [bz#1940450]
- kvm-vfio-ccw-Connect-the-device-request-notifier.patch [bz#1940450]
- kvm-pc-bios-s390-ccw-fix-off-by-one-error.patch [bz#1942880]
- kvm-pc-bios-s390-ccw-break-loop-if-a-null-block-number-i.patch [bz#1942880]
- kvm-pc-bios-s390-ccw-don-t-try-to-read-the-next-block-if.patch [bz#1942880]
- Resolves: bz#1940450
(RHEL8.5 - Mediated Device already in use by same domain we are booting (vfio-ccw/Multipath Testing) (kvm) - qemu-kvm part (also has kernel and libvirt parts))
- Resolves: bz#1942880
(RHEL8.4 Nightly[0322] - KVM guest fails to find zipl boot menu index (qemu-kvm))
* Wed May 05 2021 Danilo Cesar Lemes de Paula <ddepaula@redhat.com> - 4.2.0-50.el8
- kvm-hw-intc-arm_gic-Fix-interrupt-ID-in-GICD_SGIR-regist.patch [bz#1925430]
- kvm-libqos-usb-hcd-ehci-use-32-bit-write-for-config-regi.patch [bz#1842478]
- kvm-libqos-pci-pc-use-32-bit-write-for-EJ-register.patch [bz#1842478]
- kvm-memory-Revert-memory-accept-mismatching-sizes-in-mem.patch [bz#1842478]
- kvm-acpi-accept-byte-and-word-access-to-core-ACPI-regist.patch [bz#1842478]
- kvm-xhci-fix-valid.max_access_size-to-access-address-reg.patch [bz#1842478]
- kvm-softmmu-memory-Log-invalid-memory-accesses.patch [bz#1842478]
- Resolves: bz#1925430
(CVE-2021-20221 virt:rhel/qemu-kvm: qemu: out-of-bound heap buffer access via an interrupt ID field [rhel-8.5.0])
- Resolves: bz#1842478
(CVE-2020-13754 virt:rhel/qemu-kvm: QEMU: msix: OOB access during mmio operations may lead to DoS [rhel-8.5.0])
* Wed Apr 28 2021 Danilo Cesar Lemes de Paula <ddepaula@redhat.com> - 4.2.0-49.el8
- kvm-net-remove-an-assert-call-in-eth_get_gso_type.patch [bz#1892350]
- kvm-e1000-fail-early-for-evil-descriptor.patch [bz#1930092]
- kvm-net-forbid-the-reentrant-RX.patch [bz#1859175]
- kvm-qemu-img-convert-Don-t-pre-zero-images.patch [bz#1855250]
- kvm-audio-audio_generic_get_buffer_in-should-honor-size.patch [bz#1932823]
- Resolves: bz#1892350
(CVE-2020-27617 virt:rhel/qemu-kvm: QEMU: net: an assert failure via eth_get_gso_type [rhel-8.5.0])
- Resolves: bz#1930092
(CVE-2021-20257 virt:rhel/qemu-kvm: QEMU: net: e1000: infinite loop while processing transmit descriptors [rhel-8.5.0])
- Resolves: bz#1859175
(CVE-2020-15859 virt:rhel/qemu-kvm: QEMU: net: e1000e: use-after-free while sending packets [rhel-8])
- Resolves: bz#1855250
(qemu-img convert uses possibly slow pre-zeroing on block storage)
- Resolves: bz#1932823
(after upgrade from 4.3 to 4.4 audio stops working in guests after couple of seconds)
* Tue Mar 16 2021 Danilo Cesar Lemes de Paula <ddepaula@redhat.com> - 4.2.0-48.el8
- kvm-ide-atapi-check-logical-block-address-and-read-size-.patch [bz#1917451]
- Resolves: bz#1917451
(CVE-2020-29443 virt:rhel/qemu-kvm: QEMU: ide: atapi: OOB access while processing read commands [rhel-8.4.0])
* Mon Mar 08 2021 Danilo Cesar Lemes de Paula <ddepaula@redhat.com> - 4.2.0-47.el8
- kvm-x86-cpu-Enable-AVX512_VP2INTERSECT-cpu-feature.patch [bz#1790620]
- kvm-target-i386-add-fast-short-REP-MOV-support.patch [bz#1790620]
- kvm-x86-cpu-Populate-SVM-CPUID-feature-bits.patch [bz#1790620]
- kvm-i386-Add-the-support-for-AMD-EPYC-3rd-generation-pro.patch [bz#1790620]
- Resolves: bz#1790620
([RFE] AMD Milan - Add KVM/support for EPYC-Milan CPU Model - Slow Train)
* Wed Mar 03 2021 Danilo Cesar Lemes de Paula <ddepaula@redhat.com> - 4.2.0-46.el8
- kvm-redhat-makes-qemu-respect-system-s-crypto-profile.patch [bz#1902960]
- kvm-spapr-Adjust-firmware-path-of-PCI-devices.patch [bz#1912891]
- Resolves: bz#1902960
(QEMU doesn't honour system crypto policies)
- Resolves: bz#1912891
([ppc64le] --disk cdimage.iso,bus=usb fails to boot)
* Wed Feb 10 2021 Jon Maloy <jmaloy@redhat.com> - 4.2.0-45.el8
- kvm-virtiofsd-extract-lo_do_open-from-lo_open.patch [bz#1919111]
- kvm-virtiofsd-optionally-return-inode-pointer-from-lo_do.patch [bz#1919111]
- kvm-virtiofsd-prevent-opening-of-special-files-CVE-2020-.patch [bz#1919111]
- Resolves: bz#1919111
(CVE-2020-35517 virt:rhel/qemu-kvm: QEMU: virtiofsd: potential privileged host device access from guest [rhel-8.4.0])
* Tue Feb 02 2021 Jon Maloy <jmaloy@redhat.com> - 4.2.0-44.el8
- kvm-spapr-Improve-handling-of-fdt-buffer-size.patch [bz#1901837]
- kvm-spapr-Fold-h_cas_compose_response-into-h_client_arch.patch [bz#1901837]