1 files changed, 4 insertions, 0 deletions

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index c9483d8f6140..a7ba3bccadc5 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -1430,6 +1430,8 @@ static int cgroup_get_sb(struct file_system_type *fs_type,
         struct super_block *sb;
         struct cgroupfs_root *new_root;
 
+        lock_kernel();
+
         /* First find the desired set of subsystems */
         mutex_lock(&cgroup_mutex);
         ret = parse_cgroupfs_options(data, &opts);
@@ -1559,6 +1561,7 @@ static int cgroup_get_sb(struct file_system_type *fs_type,
         simple_set_mnt(mnt, sb);
         kfree(opts.release_agent);
         kfree(opts.name);
+        unlock_kernel();
         return 0;
 
  drop_new_super:
@@ -1568,6 +1571,7 @@ static int cgroup_get_sb(struct file_system_type *fs_type,
  out_err:
         kfree(opts.release_agent);
         kfree(opts.name);
+        unlock_kernel();
 
         return ret;
 }