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 <torva...@linux-foundation.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Thomas Gleixner <t...@linutronix.de> Cc: Ingo Molnar <mi...@kernel.org> Cc: linux-kernel@vger.kernel.org Signed-off-by: Sasha Levin <alexander.le...@verizon.com> --- 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