diff options
| -rw-r--r-- | drivers/md/bcache/super.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index c40db9c161c1..9e6dfe2ec147 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -1732,7 +1732,12 @@ static CLOSURE_CALLBACK(cache_set_flush) mutex_unlock(&b->write_lock); } - if (ca->alloc_thread) + /* + * If the register_cache_set() call to bch_cache_set_alloc() failed, + * ca has not been assigned a value and return error. + * So we need check ca is not NULL during bch_cache_set_unregister(). + */ + if (ca && ca->alloc_thread) kthread_stop(ca->alloc_thread); if (c->journal.cur) { |