workqueue: use kmem_cache_free() instead of kfree()

memory allocated by kmem_cache_alloc() should be freed using
kmem_cache_free(), not kfree().

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index c273376ff73e..154aa12af48e 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -3750,7 +3750,7 @@ static void free_unbound_pwq(struct pool_workqueue *pwq)
 
         if (pwq) {
                 put_unbound_pool(pwq->pool);
-                kfree(pwq);
+                kmem_cache_free(pwq_cache, pwq);
         }
 }