diff options
| author | Oleg Nesterov <oleg@redhat.com> | 2015-07-08 21:42:11 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-07-09 15:05:32 -0700 |
| commit | fecdf8be2d91e04b0a9a4f79ff06499a36f5d14f (patch) | |
| tree | 32cd5f2438ccdf55752a090cd86f3443e2c78ee7 | |
| parent | 4a0e3e989d66bb7204b163d9cfaa7fa96d0f2023 (diff) | |
| download | linux-fecdf8be2d91e04b0a9a4f79ff06499a36f5d14f.tar.bz2 | |
net: pktgen: fix race between pktgen_thread_worker() and kthread_stop()
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>
| -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 05badbb58865..41489e3c69af 100644 --- a/net/core/pktgen.c +++ b/net/core/pktgen.c @@ -3572,8 +3572,10 @@ 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); |