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| author | Oleg Nesterov <oleg@redhat.com> | 2013-01-21 20:48:17 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-01-22 19:08:17 +0100 |
| commit | 9067ac85d533651b98c2ff903182a20cbb361fcb (patch) | |
| tree | 30e741b4f1fa71b155c216d7e7212e3befa3cde3 /kernel | |
| parent | ptrace: ensure arch_ptrace/ptrace_request can never race with SIGKILL (diff) | |
| download | linux-9067ac85d533651b98c2ff903182a20cbb361fcb.tar.xz linux-9067ac85d533651b98c2ff903182a20cbb361fcb.zip | |
wake_up_process() should be never used to wakeup a TASK_STOPPED/TRACED task
wake_up_process() should never wakeup a TASK_STOPPED/TRACED task.
Change it to use TASK_NORMAL and add the WARN_ON().
TASK_ALL has no other users, probably can be killed.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched/core.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 257002c13bb0..26058d0bebba 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -1523,7 +1523,8 @@ out: */ int wake_up_process(struct task_struct *p) { - return try_to_wake_up(p, TASK_ALL, 0); + WARN_ON(task_is_stopped_or_traced(p)); + return try_to_wake_up(p, TASK_NORMAL, 0); } EXPORT_SYMBOL(wake_up_process); |