tree c65567f936e34db07096b4003010c8ba64fe9022
parent 2595646791c319cadfdbf271563aac97d0843dc7
author Stefan Hajnoczi <stefanha@redhat.com> 1544123674 +0000
committer Michael S. Tsirkin <mst@redhat.com> 1544124154 -0500

vhost/vsock: fix reset orphans race with close timeout

If a local process has closed a connected socket and hasn't received a
RST packet yet, then the socket remains in the table until a timeout
expires.

When a vhost_vsock instance is released with the timeout still pending,
the socket is never freed because vhost_vsock has already set the
SOCK_DONE flag.

Check if the close timer is pending and let it close the socket.  This
prevents the race which can leak sockets.

Reported-by: Maximilian Riemensberger <riemensberger@cadami.net>
Cc: Graham Whaley <graham.whaley@gmail.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>