1 files changed, 4 insertions, 0 deletions

diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index 16f39c30b091..ff93c92164b3 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -470,7 +470,9 @@ int sysfs_update_file(struct kobject * kobj, const struct attribute * attr)
         if (!victim_sd)
                 goto out;
 
+        mutex_lock(&sysfs_rename_mutex);
         victim = sysfs_get_dentry(victim_sd);
+        mutex_unlock(&sysfs_rename_mutex);
         if (IS_ERR(victim)) {
                 rc = PTR_ERR(victim);
                 victim = NULL;
@@ -509,7 +511,9 @@ int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode)
         if (!victim_sd)
                 goto out;
 
+        mutex_lock(&sysfs_rename_mutex);
         victim = sysfs_get_dentry(victim_sd);
+        mutex_unlock(&sysfs_rename_mutex);
         if (IS_ERR(victim)) {
                 rc = PTR_ERR(victim);
                 victim = NULL;