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authorJason Wang <jasowang@redhat.com>2018-03-29 16:00:04 +0800
committerDavid S. Miller <davem@davemloft.net>2018-03-29 16:22:47 -0400
commitd65026c6c62e7d9616c8ceb5a53b68bcdc050525 (patch)
treedccd59dd04aef986186afb3bb4ff279bebe245b7 /drivers/atm/iphase.c
parent58f101bf87e32753342a6924772c6ebb0fbde24a (diff)
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vhost: validate log when IOTLB is enabled
Vq log_base is the userspace address of bitmap which has nothing to do with IOTLB. So it needs to be validated unconditionally otherwise we may try use 0 as log_base which may lead to pin pages that will lead unexpected result (e.g trigger BUG_ON() in set_bit_to_user()). Fixes: 6b1e6cc7855b0 ("vhost: new device IOTLB API") Reported-by: syzbot+6304bf97ef436580fede@syzkaller.appspotmail.com 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>
Diffstat (limited to 'drivers/atm/iphase.c')
0 files changed, 0 insertions, 0 deletions