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-rw-r--r--fs/sysfs/file.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index 62f4fb37789e..00012e31829d 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -493,6 +493,12 @@ int sysfs_attr_ns(struct kobject *kobj, const struct attribute *attr,
const void *ns = NULL;
int err;
+ if (!dir_sd) {
+ WARN(1, KERN_ERR "sysfs: kobject %s without dirent\n",
+ kobject_name(kobj));
+ return -ENOENT;
+ }
+
err = 0;
if (!sysfs_ns_type(dir_sd))
goto out;
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