diff options
| author | Oleg Nesterov <oleg@redhat.com> | 2015-07-08 21:42:11 +0200 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2016-08-26 20:02:21 +0200 |
| commit | a454d9740fe378b4a27520d575d6ec0105ace8e8 (patch) | |
| tree | 9ee4d3e518a0304437d61fbc60f073fda66a78e3 /net | |
| parent | 40dd1057bedf53fe7590768699b98fce97d2b0c0 (diff) | |
net: pktgen: fix race between pktgen_thread_worker() and kthread_stop()
[ Upstream commit fecdf8be2d91e04b0a9a4f79ff06499a36f5d14f ]
pktgen_thread_worker() is obviously racy, kthread_stop() can come
between the kthread_should_stop() check and set_current_state().
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reported-by: Jan Stancek <jstancek@redhat.com>
Reported-by: Marcelo Leitner <mleitner@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stefan Guendhoer <stefan@guendhoer.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/pktgen.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/core/pktgen.c b/net/core/pktgen.c index ebbea5371..21a23d97e 100644 --- a/net/core/pktgen.c +++ b/net/core/pktgen.c @@ -3377,8 +3377,10 @@ static int pktgen_thread_worker(void *arg) pktgen_rem_thread(t); /* Wait for kthread_stop */ - while (!kthread_should_stop()) { + for (;;) { set_current_state(TASK_INTERRUPTIBLE); + if (kthread_should_stop()) + break; schedule(); } __set_current_state(TASK_RUNNING); |