This is a note to let you know that I've just added the patch titled
hyperv: Fix the total_data_buflen in send path
to the 3.17-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
hyperv-fix-the-total_data_buflen-in-send-path.patch
and it can be found in the queue-3.17 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Fri Nov 7 11:36:50 PST 2014
From: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
Date: Wed, 22 Oct 2014 13:47:18 -0700
Subject: hyperv: Fix the total_data_buflen in send path
From: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
[ Upstream commit 942396b01989d54977120f3625e5ba31afe7a75c ]
total_data_buflen is used by netvsc_send() to decide if a packet can be put
into send buffer. It should also include the size of RNDIS message before the
Ethernet frame. Otherwise, a messge with total size bigger than send_section_size
may be copied into the send buffer, and cause data corruption.
[Request to include this patch to the Stable branches]
Signed-off-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
Reviewed-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/hyperv/netvsc_drv.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -556,6 +556,7 @@ do_lso:
do_send:
/* Start filling in the page buffers with the rndis hdr */
rndis_msg->msg_len += rndis_msg_size;
+ packet->total_data_buflen = rndis_msg->msg_len;
packet->page_buf_cnt = init_page_array(rndis_msg, rndis_msg_size,
skb, &packet->page_buf[0]);
Patches currently in stable-queue which might be from haiyangz@xxxxxxxxxxxxx are
queue-3.17/hyperv-fix-the-total_data_buflen-in-send-path.patch
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