From 9b54d816e00425c3a517514e0d677bb3cec49258 Mon Sep 17 00:00:00 2001 From: Hou Tao Date: Fri, 3 Feb 2017 17:19:07 +0800 Subject: [PATCH] blkcg: fix double free of new_blkg in blkcg_init_queue If blkg_create fails, new_blkg passed as an argument will be freed by blkg_create, so there is no need to free it again. Signed-off-by: Hou Tao Signed-off-by: Jens Axboe --- block/blk-cgroup.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 37fe595cfd70..295e98c2c8cc 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -1079,10 +1079,8 @@ int blkcg_init_queue(struct request_queue *q) if (preloaded) radix_tree_preload_end(); - if (IS_ERR(blkg)) { - blkg_free(new_blkg); + if (IS_ERR(blkg)) return PTR_ERR(blkg); - } q->root_blkg = blkg; q->root_rl.blkg = blkg;