From: Kirill Korotaev Date: Thu, 23 Jun 2005 07:09:51 +0000 (-0700) Subject: [PATCH] Software suspend and recalc sigpending bug fix X-Git-Tag: v2.6.13-rc1~68^2~423 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4fea2838aa00b9e59efde974dcdb455608192811;p=linux-2.6 [PATCH] Software suspend and recalc sigpending bug fix This patch fixes recalc_sigpending() to work correctly with tasks which are being freezed. The problem is that freeze_processes() sets PF_FREEZE and TIF_SIGPENDING flags on tasks, but recalc_sigpending() called from e.g. sys_rt_sigtimedwait or any other kernel place will clear TIF_SIGPENDING due to no pending signals queued and the tasks won't be freezed until it recieves a real signal or freezed_processes() fail due to timeout. Signed-Off-By: Kirill Korotaev Signed-Off-By: Alexey Kuznetsov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/kernel/signal.c b/kernel/signal.c index c89821b69a..d1258729a5 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -213,6 +213,7 @@ static inline int has_pending_signals(sigset_t *signal, sigset_t *blocked) fastcall void recalc_sigpending_tsk(struct task_struct *t) { if (t->signal->group_stop_count > 0 || + (t->flags & PF_FREEZE) || PENDING(&t->pending, &t->blocked) || PENDING(&t->signal->shared_pending, &t->blocked)) set_tsk_thread_flag(t, TIF_SIGPENDING);