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| author | Oleg Nesterov <oleg@redhat.com> | 2011-05-25 19:22:27 +0200 |
|---|---|---|
| committer | Oleg Nesterov <oleg@redhat.com> | 2011-05-25 19:22:27 +0200 |
| commit | d92fcf0552a15891b25c343cee340d295e24109c (patch) | |
| tree | ad43a9c62d926f223d699544bcef4695af4f3e9d | |
| parent | ptrace: ptrace_resume() shouldn't wake up !TASK_TRACED thread (diff) | |
| download | linux-d92fcf0552a15891b25c343cee340d295e24109c.tar.xz linux-d92fcf0552a15891b25c343cee340d295e24109c.zip | |
signal: sys_pause() should check signal_pending()
ERESTART* is always wrong without TIF_SIGPENDING. Teach sys_pause()
to handle the spurious wakeup correctly.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
| -rw-r--r-- | kernel/signal.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index ad5e818baacc..86c32b884f8e 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -3023,8 +3023,10 @@ SYSCALL_DEFINE2(signal, int, sig, __sighandler_t, handler) SYSCALL_DEFINE0(pause) { - current->state = TASK_INTERRUPTIBLE; - schedule(); + while (!signal_pending(current)) { + current->state = TASK_INTERRUPTIBLE; + schedule(); + } return -ERESTARTNOHAND; } |