[PATCH v2 2/4] signal: Fix the lock_task_sighand() annotation

[Bart Van Assche]

lock_task_sighand() may return NULL. Make this clear in its lock context
annotation.

Fixes: 04e49d926f43 ("sched: Enable context analysis for core.c and fair.c")
Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
---
 include/linux/sched/signal.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/sched/signal.h b/include/linux/sched/signal.h
index a22248aebcf9..a4835a7de07e 100644
--- a/include/linux/sched/signal.h
+++ b/include/linux/sched/signal.h
@@ -739,7 +739,7 @@ static inline int thread_group_empty(struct task_struct *p)
 
 extern struct sighand_struct *lock_task_sighand(struct task_struct *task,
 						unsigned long *flags)
-	__acquires(&task->sighand->siglock);
+	__cond_acquires(nonnull, &task->sighand->siglock);
 
 static inline void unlock_task_sighand(struct task_struct *task,
 						unsigned long *flags)