diff options
| author | Tomas Bortoli <tomasbortoli@gmail.com> | 2018-07-20 11:27:30 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-09 20:04:33 +0200 |
| commit | 06d7a39a9c397a62615122d21dafa4c16506e7e2 (patch) | |
| tree | 2cbd9c58baa846607b17ca60fc765fd85b6d41da /net/9p/trans_fd.c | |
| parent | 34cc7cf15e16a34447581a5956bf1a434fcb190f (diff) | |
net/9p/trans_fd.c: fix race-condition by flushing workqueue before the kfree()
commit 430ac66eb4c5b5c4eb846b78ebf65747510b30f1 upstream.
The patch adds the flush in p9_mux_poll_stop() as it the function used by
p9_conn_destroy(), in turn called by p9_fd_close() to stop the async
polling associated with the data regarding the connection.
Link: http://lkml.kernel.org/r/20180720092730.27104-1-tomasbortoli@gmail.com
Signed-off-by: Tomas Bortoli <tomasbortoli@gmail.com>
Reported-by: syzbot+39749ed7d9ef6dfb23f6@syzkaller.appspotmail.com
To: Eric Van Hensbergen <ericvh@gmail.com>
To: Ron Minnich <rminnich@sandia.gov>
To: Latchesar Ionkov <lucho@ionkov.net>
Cc: Yiwen Jiang <jiangyiwen@huwei.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dominique Martinet <dominique.martinet@cea.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/9p/trans_fd.c')
| -rw-r--r-- | net/9p/trans_fd.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c index bced8c074c12..c923221bb8b9 100644 --- a/net/9p/trans_fd.c +++ b/net/9p/trans_fd.c @@ -185,6 +185,8 @@ static void p9_mux_poll_stop(struct p9_conn *m) spin_lock_irqsave(&p9_poll_lock, flags); list_del_init(&m->poll_pending_link); spin_unlock_irqrestore(&p9_poll_lock, flags); + + flush_work(&p9_poll_work); } /** |