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-rw-r--r--kernel/signal.c16
1 files changed, 13 insertions, 3 deletions
diff --git a/kernel/signal.c b/kernel/signal.c
index 92a1ab004498..8bf7a40e5c71 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -55,10 +55,21 @@ static int sig_handler_ignored(void __user *handler, int sig)
(handler == SIG_DFL && sig_kernel_ignore(sig));
}
-static int sig_ignored(struct task_struct *t, int sig)
+static int sig_task_ignored(struct task_struct *t, int sig)
{
void __user *handler;
+ handler = sig_handler(t, sig);
+
+ if (unlikely(t->signal->flags & SIGNAL_UNKILLABLE) &&
+ handler == SIG_DFL)
+ return 1;
+
+ return sig_handler_ignored(handler, sig);
+}
+
+static int sig_ignored(struct task_struct *t, int sig)
+{
/*
* Blocked signals are never ignored, since the
* signal handler may change by the time it is
@@ -67,8 +78,7 @@ static int sig_ignored(struct task_struct *t, int sig)
if (sigismember(&t->blocked, sig) || sigismember(&t->real_blocked, sig))
return 0;
- handler = sig_handler(t, sig);
- if (!sig_handler_ignored(handler, sig))
+ if (!sig_task_ignored(t, sig))
return 0;
/*