tree 3ecc82deed99dc11c67d64bfea2737fc68d769d3
parent 2e65a2075cc740b485ab203430bdf3459d5551b6
author Michael S. Tsirkin <mst@redhat.com> 1280129130 +0930
committer Linus Torvalds <torvalds@linux-foundation.org> 1280156731 -0700

virtio: fix oops on OOM

virtio ring was changed to return an error code on OOM,
but one caller was missed and still checks for vq->vring.num.
The fix is just to check for <0 error code.

Long term it might make sense to change goto add_head to
just return an error on oom instead, but let's apply
a minimal fix for 2.6.35.

Reported-by: Chris Mason <chris.mason@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Tested-by: Chris Mason <chris.mason@oracle.com>
Cc: stable@kernel.org # .34.x
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>