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Update kdbus

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Latest upstream commit 63c8e2f6f337
This commit is contained in:
Josh Boyer 2015-07-27 14:22:31 -04:00
parent 86b8d46cbb
commit 471c598993
1 changed files with 87 additions and 0 deletions
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kdbus.patch
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@ -49099,3 +49099,90 @@ index af87641db416..8caffe565750 100644
--
2.4.3
From 52e895942ba065db563de042a4fff21fb38b26e6 Mon Sep 17 00:00:00 2001
From: David Herrmann <dh.herrmann@gmail.com>
Date: Fri, 24 Jul 2015 12:57:20 +0200
Subject: [PATCH 1/2] kdbus: fix sparse address-space annotation
Make sure to properly annotate casts in 'struct iovec' if we cross
address-spaces, to make sure sparse does not warn about them.
All those conversions are fine, as we are allowed to pass those kvecs
through the iovec importer.
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
ipc/kdbus/message.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/ipc/kdbus/message.c b/ipc/kdbus/message.c
index 3520f45875df..27a5021fe70f 100644
--- a/ipc/kdbus/message.c
+++ b/ipc/kdbus/message.c
@@ -920,7 +920,7 @@ struct kdbus_pool_slice *kdbus_staging_emit(struct kdbus_staging *staging,
/* msg.size */
v->iov_len = sizeof(msg_size);
- v->iov_base = &msg_size;
+ v->iov_base = (void __user *)&msg_size;
++v;
/* msg (after msg.size) plus items */
@@ -937,7 +937,7 @@ struct kdbus_pool_slice *kdbus_staging_emit(struct kdbus_staging *staging,
if (meta_size > 0) {
/* metadata items */
v->iov_len = meta_size;
- v->iov_base = meta_items;
+ v->iov_base = (void __user *)meta_items;
++v;
/* padding after metadata */
--
2.4.3
From 63c8e2f6f33766723d35a13be094a4e475e6d46d Mon Sep 17 00:00:00 2001
From: David Herrmann <dh.herrmann@gmail.com>
Date: Fri, 24 Jul 2015 12:32:09 +0200
Subject: [PATCH 2/2] kdbus: fix wrong message size on 32bit
When broadcasting messages, each receiver might get a different message
due to different metadata requirements. Therefore, the value of msg->size
might be different for each receiver. To account for that, we use a
temporary variable to store the real size and use it as source for the
iovec-copy transaction instead of &msg->size.
But we incorrectly used "size_t" for this variable. Hence, on 32bit, we
end up missing 4 bytes of the message header as "size_t" might only be
32bit wide.
Fix this and properly use "u64" for the message size that is copied to
user-space.
Reported-by: Alban Browaeys <prahal@yahoo.com>
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
ipc/kdbus/message.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/ipc/kdbus/message.c b/ipc/kdbus/message.c
index 27a5021fe70f..432dba4dcfdc 100644
--- a/ipc/kdbus/message.c
+++ b/ipc/kdbus/message.c
@@ -886,9 +886,9 @@ struct kdbus_pool_slice *kdbus_staging_emit(struct kdbus_staging *staging,
{
struct kdbus_item *item, *meta_items = NULL;
struct kdbus_pool_slice *slice = NULL;
- size_t off, size, msg_size, meta_size;
+ size_t off, size, meta_size;
struct iovec *v;
- u64 attach;
+ u64 attach, msg_size;
int ret;
/*
--
2.4.3