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| author | Jason Wang <jasowang@redhat.com> | 2018-03-29 16:00:04 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-03-29 16:22:47 -0400 |
| commit | d65026c6c62e7d9616c8ceb5a53b68bcdc050525 (patch) | |
| tree | dccd59dd04aef986186afb3bb4ff279bebe245b7 /net | |
| parent | 58f101bf87e32753342a6924772c6ebb0fbde24a (diff) | |
| download | linux-stable-d65026c6c62e7d9616c8ceb5a53b68bcdc050525.tar.gz linux-stable-d65026c6c62e7d9616c8ceb5a53b68bcdc050525.tar.bz2 linux-stable-d65026c6c62e7d9616c8ceb5a53b68bcdc050525.zip | |
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 'net')
0 files changed, 0 insertions, 0 deletions