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>

1 files changed, 2 insertions, 0 deletions

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 5606c0f08d95..3fe01102607b 100644
--- 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;
                 }