[PATCH v5 02/13] lockdep: Fix wrong condition to print bug msgs for MAX_LOCKDEP_CHAIN_HLOCKS

Byungchul Park
2017-01-18T13:18:05Z

Bug messages and stack dump for MAX_LOCKDEP_CHAIN_HLOCKS should be
printed only at the first time.

Signed-off-by: Byungchul Park <byungchul.park@lge.com>
---
kernel/locking/lockdep.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index f37156f..a143eb4 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -2166,7 +2166,7 @@ static inline int add_chain_cache(struct task_struct *curr,
* Important for check_no_collision().
*/
if (unlikely(nr_chain_hlocks > MAX_LOCKDEP_CHAIN_HLOCKS)) {
- if (debug_locks_off_graph_unlock())
+ if (!debug_locks_off_graph_unlock())
return 0;

print_lockdep_off("BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!");
--
1.9.1