diff options
| author | Amit Pundir <amit.pundir@linaro.org> | 2017-11-20 21:48:45 +0530 |
|---|---|---|
| committer | Amit Pundir <amit.pundir@linaro.org> | 2017-11-20 21:48:45 +0530 |
| commit | baa6b7f93aec81644160ca02a8a6a5ae3be4ce85 (patch) | |
| tree | 2a6bf027912ae74a354ce3b7d460d04ccfac4e55 /kernel/locking/lockdep.c | |
| parent | 7bc703cde6592016ed3eadd8bd592ee9adbe6647 (diff) | |
| parent | f409333f361fed0c71c479b2a0c4e032d496cd94 (diff) | |
Merge branch 'linux-linaro-lsk-v3.18' into linux-linaro-lsk-v3.18-androidlsk-v3.18-18.03-androidlsk-v3.18-18.02-androidlsk-v3.18-17.11-androidlinux-linaro-lsk-v3.18-android
Conflicts:
net/packet/af_packet.c
Fix conflicts by refactoring changes from LTS commit
e4ffdf9ead59 ("packet: hold bind lock when rebinding to fanout hook"),
to align with the changes from AOSP commit 6bec212418d2
("UPSTREAM: packet: fix races in fanout_add()").
Signed-off-by: Amit Pundir <amit.pundir@linaro.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 88d0d4420ad2..3467618cc0ea 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -3107,10 +3107,17 @@ 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; } |