From: Wu Bo <wubo40@xxxxxxxxxx>
If a call of the function blkg_lookup_check() failed,
we should be release the previously allocated block group
before jumping to the lable 'fail_unlock' in the implementation of
the function blkg_conf_prep().
Suggested-by: Markus Elfring <Markus.Elfring@xxxxxx>
Signed-off-by: Wu Bo <wubo40@xxxxxxxxxx>
---
V2: omit the source code quotation from
the change description
---
block/blk-cgroup.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index 930212c..afeb769 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -682,6 +682,7 @@ int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol,
blkg = blkg_lookup_check(pos, pol, q);
if (IS_ERR(blkg)) {
ret = PTR_ERR(blkg);
+ blkg_free(new_blkg);
goto fail_unlock;
}
--
1.8.3.1
