diff options
| author | Jason Wang <jasowang@redhat.com> | 2018-03-27 20:50:52 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-03-27 13:03:18 -0400 |
| commit | dc6455a71c7fc5117977e197f67f71b49f27baba (patch) | |
| tree | 524dca0c836ebcc1f9d2f4e5fbcfd882955a0f6b /kernel | |
| parent | d222a084329f3c0b46ad4ed6d4b074f1d62e2056 (diff) | |
| download | linux-dc6455a71c7fc5117977e197f67f71b49f27baba.tar.gz linux-dc6455a71c7fc5117977e197f67f71b49f27baba.tar.bz2 linux-dc6455a71c7fc5117977e197f67f71b49f27baba.zip | |
vhost: correctly remove wait queue during poll failure
We tried to remove vq poll from wait queue, but do not check whether
or not it was in a list before. This will lead double free. Fixing
this by switching to use vhost_poll_stop() which zeros poll->wqh after
removing poll from waitqueue to make sure it won't be freed twice.
Cc: Darren Kenny <darren.kenny@oracle.com>
Reported-by: syzbot+c0272972b01b872e604a@syzkaller.appspotmail.com
Fixes: 2b8b328b61c79 ("vhost_net: handle polling errors when setting backend")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions