When get_pending detects the task has been marked to be killed we try to
clean up the SIGKLL by doing a sigdelset and recalc_sigpending, but we
still leave it in shared_pending. If the signal is being short circuit
delivered there is no need to put in shared_pending so this adds a check
in complete_signal.
This patch was modified from Eric Biederman <ebiederm@xxxxxxxxxxxx>
original patch.
Signed-off-by: Mike Christie <michael.christie@xxxxxxxxxx>
---
kernel/signal.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/kernel/signal.c b/kernel/signal.c
index 8f6330f0e9ca..3dc99b9aec7f 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1052,6 +1052,14 @@ static void complete_signal(int sig, struct task_struct *p, enum pid_type type)
signal->flags = SIGNAL_GROUP_EXIT;
signal->group_exit_code = sig;
signal->group_stop_count = 0;
+
+ /*
+ * The signal is being short circuit delivered so
+ * don't set pending.
+ */
+ if (type != PIDTYPE_PID)
+ sigdelset(&signal->shared_pending.signal, sig);
+
t = p;
do {
task_clear_jobctl_pending(t, JOBCTL_PENDING_MASK);
--
2.25.1
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