[PATCH 20/33] utrace_get_signal: s/JOBCTL_STOP_PENDING/JOBCTL_PENDING_MASK/

[Oleg Nesterov]

utrace_get_signal() checks JOBCTL_STOP_PENDING to detect the
case when we should not try to dequeue the signal but should
try to participate in the group-stop.

With the recent changes this is not enough, everything which
contrbutes to recalc_sigpending_tsk() should be respected.

Check JOBCTL_PENDING_MASK instead. This matches the
JOBCTL_STOP_PENDING | JOBCTL_TRAP_MASK code in the caller,
get_signal_to_deliver(). Note that this code won't run if
utrace_get_signal() returns signr > 0.

Signed-off-by: Oleg Nesterov <oleg at redhat.com>
---
 kernel/utrace.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/utrace.c b/kernel/utrace.c
index d41b982..0bb0a06 100644
--- a/kernel/utrace.c
+++ b/kernel/utrace.c
@@ -2027,7 +2027,7 @@ int utrace_get_signal(struct task_struct *task, struct pt_regs *regs,
 		ka = NULL;
 		memset(return_ka, 0, sizeof *return_ka);
 	} else if (!(task->utrace_flags & UTRACE_EVENT_SIGNAL_ALL) ||
-		   unlikely(task->jobctl & JOBCTL_STOP_PENDING)) {
+		   unlikely(task->jobctl & JOBCTL_PENDING_MASK)) {
 		/*
 		 * If no engine is interested in intercepting signals or
 		 * we must stop, let the caller just dequeue them normally
-- 
1.5.5.1