diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index e6bb9b2a4cbe..c0bf38a21caa 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -307,6 +307,7 @@ static int sysfs_dentry_revalidate(struct dentry *dentry, struct nameidata *nd)
 {
 	struct sysfs_dirent *sd;
 	int is_dir;
+	int type;
 
 	if (nd->flags & LOOKUP_RCU)
 		return -ECHILD;
@@ -326,6 +327,13 @@ static int sysfs_dentry_revalidate(struct dentry *dentry, struct nameidata *nd)
 	if (strcmp(dentry->d_name.name, sd->s_name) != 0)
 		goto out_bad;
 
+	/* The sysfs dirent has been moved to a different namespace */
+	type = KOBJ_NS_TYPE_NONE;
+	if (sd->s_parent)
+		type = sysfs_ns_type(sd->s_parent);
+	if (type && (sysfs_info(dentry->d_sb)->ns[type] != sd->s_ns))
+		goto out_bad;
+
 	mutex_unlock(&sysfs_mutex);
 out_valid:
 	return 1;