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authorTejun Heo <tj@kernel.org>2013-04-01 11:23:31 -0700
committerTejun Heo <tj@kernel.org>2013-04-01 11:23:31 -0700
commit4862125b0256a946d2749a1d5003b0604bc3cb4d (patch)
tree0091a7104afb64d1ae7db22b880a8f5975ba2dab
parent13e2e556013a543eebd238d1c2759195e3c0c9fc (diff)
workqueue: fix memory leak in apply_workqueue_attrs()
apply_workqueue_attrs() wasn't freeing temp attrs variable @new_attrs in its success path. Fix it. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Lai Jiangshan <laijs@cn.fujitsu.com>
-rw-r--r--kernel/workqueue.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index abe1f0da4600..89480fc8eaa3 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -3636,6 +3636,7 @@ int apply_workqueue_attrs(struct workqueue_struct *wq,
struct workqueue_attrs *new_attrs;
struct pool_workqueue *pwq = NULL, *last_pwq;
struct worker_pool *pool;
+ int ret;
/* only unbound workqueues can change attributes */
if (WARN_ON(!(wq->flags & WQ_UNBOUND)))
@@ -3668,12 +3669,16 @@ int apply_workqueue_attrs(struct workqueue_struct *wq,
spin_unlock_irq(&last_pwq->pool->lock);
}
- return 0;
+ ret = 0;
+ /* fall through */
+out_free:
+ free_workqueue_attrs(new_attrs);
+ return ret;
enomem:
kmem_cache_free(pwq_cache, pwq);
- free_workqueue_attrs(new_attrs);
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto out_free;
}
static int alloc_and_link_pwqs(struct workqueue_struct *wq)