The upper dentry may become stale before we remove it from overlay,
e.g. file was removed from upperdir directly, which triggered
warning/oops in ovl_remove_and_whiteout().
Commit cfc9fde0b07c ("ovl: verify upper dentry in
ovl_remove_and_whiteout()") fixed this issue.
Reviewed-by: Xiong Zhou <xzhou@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
Eryu Guan