pi_mutex isn't supposed to be tracked by lockdep, but just
passing NULLs for name and key will cause lockdep to spew a
warning and die, which is not what we want it to do.
Skip lockdep initialization if the caller passed NULLs for
name and key, suggesting such initialization isn't desired.
Fixes: f5694788ad8d ("rt_mutex: Add lockdep annotations")
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: [email protected]
Signed-off-by: Sasha Levin <[email protected]>
---
kernel/locking/rtmutex.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c
index 43123533e9b1..78069895032a 100644
--- a/kernel/locking/rtmutex.c
+++ b/kernel/locking/rtmutex.c
@@ -1661,7 +1661,8 @@ void __rt_mutex_init(struct rt_mutex *lock, const char
*name,
lock->waiters = RB_ROOT;
lock->waiters_leftmost = NULL;
- debug_rt_mutex_init(lock, name, key);
+ if (name && key)
+ debug_rt_mutex_init(lock, name, key);
}
EXPORT_SYMBOL_GPL(__rt_mutex_init);
--
2.11.0
