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| author | Oleg Nesterov <oleg@redhat.com> | 2015-07-08 21:42:11 +0200 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2015-10-13 03:46:12 +0100 |
| commit | 7d41d849bfffb2571e027828533ea46ee848d349 (patch) | |
| tree | aa0a2be157a8a527a32c454bb4abf01a1fcc6cc7 | |
| parent | 79bff4bc9204dec190576741babecf73786f48a3 (diff) | |
| download | kernel_samsung_smdk4412-7d41d849bfffb2571e027828533ea46ee848d349.zip kernel_samsung_smdk4412-7d41d849bfffb2571e027828533ea46ee848d349.tar.gz kernel_samsung_smdk4412-7d41d849bfffb2571e027828533ea46ee848d349.tar.bz2 | |
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: Ben Hutchings <ben@decadent.org.uk>
| -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 9dd65a9..7879b2f 100644 --- a/net/core/pktgen.c +++ b/net/core/pktgen.c @@ -3481,8 +3481,10 @@ 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); |