diff options
| author | Oleg Nesterov <oleg@redhat.com> | 2015-07-08 21:42:11 +0200 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2015-08-27 09:26:58 +0200 |
| commit | 6f137d152fcf65346b399050835addf72ec04642 (patch) | |
| tree | 80acf4d8cfd078b8b0ff39a6cae5771d51407f59 /net/core/pktgen.c | |
| parent | 1085192164c63e293bbfa799a1e64ae4d7dae4a4 (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: Jiri Slaby <jslaby@suse.cz>
Diffstat (limited to 'net/core/pktgen.c')
| -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 a104ba3c5768..cea47344d535 100644 --- a/net/core/pktgen.c +++ b/net/core/pktgen.c @@ -3423,8 +3423,10 @@ 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); |