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-rw-r--r--fs/autofs4/waitq.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c
index 1fe28e4754c2..75e5955c3f6d 100644
--- a/fs/autofs4/waitq.c
+++ b/fs/autofs4/waitq.c
@@ -171,7 +171,7 @@ static int autofs4_getpath(struct autofs_sb_info *sbi,
for (tmp = dentry ; tmp != root ; tmp = tmp->d_parent)
len += tmp->d_name.len + 1;
- if (--len > NAME_MAX) {
+ if (!len || --len > NAME_MAX) {
spin_unlock(&dcache_lock);
return 0;
}