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vhost: reject zero size iova range
authorJason Wang <jasowang@redhat.com>
Tue, 9 Apr 2019 04:10:25 +0000 (12:10 +0800)
committerDavid S. Miller <davem@davemloft.net>
Thu, 11 Apr 2019 05:45:38 +0000 (22:45 -0700)
commit813dbeb656d6c90266f251d8bd2b02d445afa63f
tree24909b6cd09af83979b11b7e7b6f5b7cc2d2ba35tree
parentb4f47f3848eb70986f75d06112af7b48b7f5f462commit | diff
vhost: reject zero size iova range

We used to accept zero size iova range which will lead a infinite loop
in translate_desc(). Fixing this by failing the request in this case.

Reported-by: syzbot+d21e6e297322a900c128@syzkaller.appspotmail.com
Fixes: 6b1e6cc7 ("vhost: new device IOTLB API")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/vhost/vhost.c diff | blob | blame | history
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