cgroup: fix memory leak in cgroup_mount()

We should free the memory allocated in parse_cgroupfs_options() before
calling this function again.

Signed-off-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 5606c0f08d95c1da85f75b1326f99cfc81e053eb..3fe01102607b164c1fb47a6be951fe0c02832875 100644 (file)
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -1540,6 +1540,8 @@ retry:
                if (!atomic_inc_not_zero(&root->top_cgroup.refcnt)) {
                        mutex_unlock(&cgroup_mutex);
                        mutex_unlock(&cgroup_tree_mutex);
+                       kfree(opts.release_agent);
+                       kfree(opts.name);
                        msleep(10);
                        goto retry;
                }