diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-27 09:11:25 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-27 09:11:25 +0200 |
| commit | 1c816bad41fea5470e8077ae4e661f3f9b5ada64 (patch) | |
| tree | 5e923d12b6284a711d66efee822ca48f95ebf1af /kernel/locking/lockdep.c | |
| parent | b0fe8f7b9b5adea2c85c72bba46e20fb21522769 (diff) | |
| parent | c02ed2e75ef4c74e41e421acb4ef1494671585e8 (diff) | |
Merge 4.11-rc4 into staging-next
We need the IIO fixes in here as well to handle merge issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/locking/lockdep.c')
| -rw-r--r-- | kernel/locking/lockdep.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c index 12e38c213b70..a95e5d1f4a9c 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -3262,10 +3262,17 @@ static int __lock_acquire(struct lockdep_map *lock, unsigned int subclass, if (depth) { hlock = curr->held_locks + depth - 1; if (hlock->class_idx == class_idx && nest_lock) { - if (hlock->references) + if (hlock->references) { + /* + * Check: unsigned int references:12, overflow. + */ + if (DEBUG_LOCKS_WARN_ON(hlock->references == (1 << 12)-1)) + return 0; + hlock->references++; - else + } else { hlock->references = 2; + } return 1; } |