diff options
| author | Roland McGrath <roland@redhat.com> | 2007-05-23 13:57:44 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-23 20:14:12 -0700 |
| commit | 7bb44adef39ad3bda2be40bb34686bc56bd563a5 (patch) | |
| tree | 1e9eecbd03877c7ac8b00a8cb1d4ae54ebec3bb1 /kernel/power | |
| parent | 3c6df2a9177c010bf811c361149069e4bfd9bb11 (diff) | |
recalc_sigpending_tsk fixes
Steve Hawkes discovered a problem where recalc_sigpending_tsk was called in
do_sigaction but no signal_wake_up call was made, preventing later signals
from waking up blocked threads with TIF_SIGPENDING already set.
In fact, the few other calls to recalc_sigpending_tsk outside the signals
code are also subject to this problem in other race conditions.
This change makes recalc_sigpending_tsk private to the signals code. It
changes the outside calls, as well as do_sigaction, to use the new
recalc_sigpending_and_wake instead.
Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: <Steve.Hawkes@motorola.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/power')
| -rw-r--r-- | kernel/power/process.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/power/process.c b/kernel/power/process.c index d31d638ab4c0..e0233d8422b9 100644 --- a/kernel/power/process.c +++ b/kernel/power/process.c @@ -101,7 +101,7 @@ static void cancel_freezing(struct task_struct *p) pr_debug(" clean up: %s\n", p->comm); do_not_freeze(p); spin_lock_irqsave(&p->sighand->siglock, flags); - recalc_sigpending_tsk(p); + recalc_sigpending_and_wake(p); spin_unlock_irqrestore(&p->sighand->siglock, flags); } } |