Merge branch 'siginfo-si_trapno-for-v5.15' of git://git.kernel.org/pub/scm/linux...

[linux-2.6-microblaze.git] / kernel / signal.c

diff --git a/kernel/signal.c b/kernel/signal.c
index 332b21f..65a5411 100644 (file)
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1413,6 +1413,21 @@ struct sighand_struct *__lock_task_sighand(struct task_struct *tsk,
        return sighand;
 }
 
+#ifdef CONFIG_LOCKDEP
+void lockdep_assert_task_sighand_held(struct task_struct *task)
+{
+       struct sighand_struct *sighand;
+
+       rcu_read_lock();
+       sighand = rcu_dereference(task->sighand);
+       if (sighand)
+               lockdep_assert_held(&sighand->siglock);
+       else
+               WARN_ON_ONCE(1);
+       rcu_read_unlock();
+}
+#endif
+
 /*
  * send signal info to all the members of a group
  */