lockdep: Fix wait-type for empty stack
Even the very first lock can violate the wait-context check, consider
the various IRQ contexts.
Fixes: de8f5e4f2dc1 ("lockdep: Introduce wait-type checks")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Joerg Roedel <jroedel@suse.de>
Link: https://lore.kernel.org/r/20210617190313.256987481@infradead.org
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index 6ff1e84..0584b20 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -4688,7 +4688,7 @@ static int check_wait_context(struct task_struct *curr, struct held_lock *next)
u8 curr_inner;
int depth;
- if (!curr->lockdep_depth || !next_inner || next->trylock)
+ if (!next_inner || next->trylock)
return 0;
if (!next_outer)
