diff options
| author |   Tomas Bortoli <tomasbortoli@gmail.com> | 2018-07-20 11:27:30 +0200 |
|---|---|---|
| committer |   Dominique Martinet <dominique.martinet@cea.fr> | 2018-08-13 09:34:58 +0900 |
| commit | 430ac66eb4c5b5c4eb846b78ebf65747510b30f1 (patch) | |
| tree | 231ed517b90b2417c631ed567e27b2f983ea1751 /net/9p | |
| parent | net/9p/virtio: Fix hard lockup in req_done (diff) | |
| download | linux-dev-430ac66eb4c5b5c4eb846b78ebf65747510b30f1.tar.xz linux-dev-430ac66eb4c5b5c4eb846b78ebf65747510b30f1.zip | |
net/9p/trans_fd.c: fix race-condition by flushing workqueue before the kfree()
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>
Diffstat (limited to 'net/9p')
| -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 588bf88c3305..b161184f77f6 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); } /** |