qemu-kvm/SOURCES/kvm-hw-ehci-check-return-value-of-usb_packet_map.patch

62 lines
2.4 KiB
Diff

From 6955223aa15ab6ea53322218ec03fb3dc2b776f8 Mon Sep 17 00:00:00 2001
From: Jon Maloy <jmaloy@redhat.com>
Date: Thu, 14 Jan 2021 00:07:05 -0500
Subject: [PATCH 16/17] hw: ehci: check return value of 'usb_packet_map'
RH-Author: Jon Maloy <jmaloy@redhat.com>
Message-id: <20210114000705.945169-2-jmaloy@redhat.com>
Patchwork-id: 100634
O-Subject: [RHEL-8.4.0 qemu-kvm PATCH 1/1] hw: ehci: check return value of 'usb_packet_map'
Bugzilla: 1898628
RH-Acked-by: Gerd Hoffmann <kraxel@redhat.com>
RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
RH-Acked-by: Thomas Huth <thuth@redhat.com>
From: Li Qiang <liq3ea@163.com>
If 'usb_packet_map' fails, we should stop to process the usb
request.
Signed-off-by: Li Qiang <liq3ea@163.com>
Message-Id: <20200812161727.29412-1-liq3ea@163.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
(cherry picked from commit 2fdb42d840400d58f2e706ecca82c142b97bcbd6)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/usb/hcd-ehci.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c
index 56ab2f457f4..024b1ed6b67 100644
--- a/hw/usb/hcd-ehci.c
+++ b/hw/usb/hcd-ehci.c
@@ -1374,7 +1374,10 @@ static int ehci_execute(EHCIPacket *p, const char *action)
spd = (p->pid == USB_TOKEN_IN && NLPTR_TBIT(p->qtd.altnext) == 0);
usb_packet_setup(&p->packet, p->pid, ep, 0, p->qtdaddr, spd,
(p->qtd.token & QTD_TOKEN_IOC) != 0);
- usb_packet_map(&p->packet, &p->sgl);
+ if (usb_packet_map(&p->packet, &p->sgl)) {
+ qemu_sglist_destroy(&p->sgl);
+ return -1;
+ }
p->async = EHCI_ASYNC_INITIALIZED;
}
@@ -1453,7 +1456,10 @@ static int ehci_process_itd(EHCIState *ehci,
if (ep && ep->type == USB_ENDPOINT_XFER_ISOC) {
usb_packet_setup(&ehci->ipacket, pid, ep, 0, addr, false,
(itd->transact[i] & ITD_XACT_IOC) != 0);
- usb_packet_map(&ehci->ipacket, &ehci->isgl);
+ if (usb_packet_map(&ehci->ipacket, &ehci->isgl)) {
+ qemu_sglist_destroy(&ehci->isgl);
+ return -1;
+ }
usb_handle_packet(dev, &ehci->ipacket);
usb_packet_unmap(&ehci->ipacket, &ehci->isgl);
} else {
--
2.27.0