Patch "vhost: fix length for cross region descriptor" has been added to the 3.4-stable tree

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This is a note to let you know that I've just added the patch titled

    vhost: fix length for cross region descriptor

to the 3.4-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:
     vhost-fix-length-for-cross-region-descriptor.patch
and it can be found in the queue-3.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From bd97120fc3d1a11f3124c7c9ba1d91f51829eb85 Mon Sep 17 00:00:00 2001
From: "Michael S. Tsirkin" <mst@xxxxxxxxxx>
Date: Mon, 26 Nov 2012 05:57:27 +0000
Subject: vhost: fix length for cross region descriptor

From: "Michael S. Tsirkin" <mst@xxxxxxxxxx>

commit bd97120fc3d1a11f3124c7c9ba1d91f51829eb85 upstream.

If a single descriptor crosses a region, the
second chunk length should be decremented
by size translated so far, instead it includes
the full descriptor length.

Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
Acked-by: Jason Wang <jasowang@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/vhost/vhost.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -1074,7 +1074,7 @@ static int translate_desc(struct vhost_d
 		}
 		_iov = iov + ret;
 		size = reg->memory_size - addr + reg->guest_phys_addr;
-		_iov->iov_len = min((u64)len, size);
+		_iov->iov_len = min((u64)len - s, size);
 		_iov->iov_base = (void __user *)(unsigned long)
 			(reg->userspace_addr + addr - reg->guest_phys_addr);
 		s += size;


Patches currently in stable-queue which might be from mst@xxxxxxxxxx are

queue-3.4/vhost-fix-length-for-cross-region-descriptor.patch
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