alarmtimer: Init nanosleep alarm timer on stack

[platform/kernel/linux-rpi.git] / kernel / signal.c

diff --git a/kernel/signal.c b/kernel/signal.c
index 8dcd882..6895f6b 100644 (file)
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -78,7 +78,7 @@ static int sig_task_ignored(struct task_struct *t, int sig, bool force)
        handler = sig_handler(t, sig);
 
        if (unlikely(t->signal->flags & SIGNAL_UNKILLABLE) &&
-                       handler == SIG_DFL && !force)
+           handler == SIG_DFL && !(force && sig_kernel_only(sig)))
                return 1;
 
        return sig_handler_ignored(handler, sig);
@@ -94,13 +94,15 @@ static int sig_ignored(struct task_struct *t, int sig, bool force)
        if (sigismember(&t->blocked, sig) || sigismember(&t->real_blocked, sig))
                return 0;
 
-       if (!sig_task_ignored(t, sig, force))
-               return 0;
-
        /*
-        * Tracers may want to know about even ignored signals.
+        * Tracers may want to know about even ignored signal unless it
+        * is SIGKILL which can't be reported anyway but can be ignored
+        * by SIGNAL_UNKILLABLE task.
         */
-       return !t->ptrace;
+       if (t->ptrace && sig != SIGKILL)
+               return 0;
+
+       return sig_task_ignored(t, sig, force);
 }
 
 /*
@@ -929,9 +931,9 @@ static void complete_signal(int sig, struct task_struct *p, int group)
         * then start taking the whole group down immediately.
         */
        if (sig_fatal(p, sig) &&
-           !(signal->flags & (SIGNAL_UNKILLABLE | SIGNAL_GROUP_EXIT)) &&
+           !(signal->flags & SIGNAL_GROUP_EXIT) &&
            !sigismember(&t->real_blocked, sig) &&
-           (sig == SIGKILL || !t->ptrace)) {
+           (sig == SIGKILL || !p->ptrace)) {
                /*
                 * This signal will be fatal to the whole group.
                 */
@@ -1036,8 +1038,7 @@ static int __send_signal(int sig, struct siginfo *info, struct task_struct *t,
        else
                override_rlimit = 0;
 
-       q = __sigqueue_alloc(sig, t, GFP_ATOMIC | __GFP_NOTRACK_FALSE_POSITIVE,
-               override_rlimit);
+       q = __sigqueue_alloc(sig, t, GFP_ATOMIC, override_rlimit);
        if (q) {
                list_add_tail(&q->list, &pending->list);
                switch ((unsigned long) info) {