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lockdep: Fix incorrect condition to print bug msgs for MAX_LOCKDEP_CHAIN_HLOCKS 

Bug messages and stack dump for MAX_LOCKDEP_CHAIN_HLOCKS should only
be printed once.

Signed-off-by: Byungchul Park <byungchul.park@lge.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1484275324-28192-1-git-send-email-byungchul.park@lge.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Byungchul Park 2017-01-13 11:42:04 +09:00 committed by Ingo Molnar
parent ff86b30010
commit f9af456a61
1 changed files with 1 additions and 1 deletions
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2
kernel/locking/lockdep.c
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@ -2203,7 +2203,7 @@ static inline int lookup_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!");