1 files changed, 4 insertions, 1 deletions

diff --git a/security/device_cgroup.c b/security/device_cgroup.c
index 5ba78701adc3..3aacd0fe7179 100644
--- a/security/device_cgroup.c
+++ b/security/device_cgroup.c
@@ -513,11 +513,14 @@ int devcgroup_inode_mknod(int mode, dev_t dev)
         struct dev_cgroup *dev_cgroup;
         struct dev_whitelist_item *wh;
 
+        if (!S_ISBLK(mode) && !S_ISCHR(mode))
+                return 0;
+
         rcu_read_lock();
 
         dev_cgroup = task_devcgroup(current);
 
-        list_for_each_entry(wh, &dev_cgroup->whitelist, list) {
+        list_for_each_entry_rcu(wh, &dev_cgroup->whitelist, list) {
                 if (wh->type & DEV_ALL)
                         goto acc_check;
                 if ((wh->type & DEV_BLOCK) && !S_ISBLK(mode))