1 files changed, 6 insertions, 0 deletions

diff --git a/fs/posix_acl.c b/fs/posix_acl.c
index 9e363e41dacc..0855f772cd41 100644
--- a/fs/posix_acl.c
+++ b/fs/posix_acl.c
@@ -246,6 +246,12 @@ posix_acl_equiv_mode(const struct posix_acl *acl, umode_t *mode_p)
         umode_t mode = 0;
         int not_equiv = 0;
 
+        /*
+         * A null ACL can always be presented as mode bits.
+         */
+        if (!acl)
+                return 0;
+
         FOREACH_ACL_ENTRY(pa, acl, pe) {
                 switch (pa->e_tag) {
                         case ACL_USER_OBJ: