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[PATCH] Fix task state testing properly in do_signal_stop()

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Any tests using < TASK_STOPPED or the like are left over from the time
when the TASK_ZOMBIE and TASK_DEAD bits were in the same word, and it
served to check for "stopped or dead".  I think this one in
do_signal_stop is the only such case.  It has been buggy ever since
exit_state was separated, and isn't testing the exit_state value.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Roland McGrath 2005-09-29 14:54:42 -07:00 • committed by Linus Torvalds
parent 4a8342d233
commit 5acbc5cb50
1 changed files with 2 additions and 1 deletions
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3
kernel/signal.c
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@ -1763,7 +1763,8 @@ do_signal_stop(int signr)
* stop is always done with the siglock held, * stop is always done with the siglock held,
* so this check has no races. * so this check has no races.
*/ */
if (t->state < TASK_STOPPED) { if (!t->exit_state &&
!(t->state & (TASK_STOPPED|TASK_TRACED))) {
stop_count++; stop_count++;
signal_wake_up(t, 0); signal_wake_up(t, 0);
} }