1 files changed, 10 insertions, 2 deletions

diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 6cbe0330249..ea76c9c5d42 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -2499,8 +2499,16 @@ void cpuset_print_task_mems_allowed(struct task_struct *tsk)
 
         dentry = task_cs(tsk)->css.cgroup->dentry;
         spin_lock(&cpuset_buffer_lock);
-        snprintf(cpuset_name, CPUSET_NAME_LEN,
-                 dentry ? (const char *)dentry->d_name.name : "/");
+
+        if (!dentry) {
+                strcpy(cpuset_name, "/");
+        } else {
+                spin_lock(&dentry->d_lock);
+                strlcpy(cpuset_name, (const char *)dentry->d_name.name,
+                        CPUSET_NAME_LEN);
+                spin_unlock(&dentry->d_lock);
+        }
+
         nodelist_scnprintf(cpuset_nodelist, CPUSET_NODELIST_LEN,
                            tsk->mems_allowed);
         printk(KERN_INFO "%s cpuset=%s mems_allowed=%s\n",