Add tizen_rcar-m2_defconfig

[platform/adaptation/renesas_rcar/renesas_kernel.git] / fs / posix_acl.c

diff --git a/fs/posix_acl.c b/fs/posix_acl.c
index 11c54fd..0855f77 100644 (file)
--- 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:
@@ -723,7 +729,7 @@ posix_acl_to_xattr(struct user_namespace *user_ns, const struct posix_acl *acl,
                   void *buffer, size_t size)
 {
        posix_acl_xattr_header *ext_acl = (posix_acl_xattr_header *)buffer;
-       posix_acl_xattr_entry *ext_entry = ext_acl->a_entries;
+       posix_acl_xattr_entry *ext_entry;
        int real_size, n;
 
        real_size = posix_acl_xattr_size(acl->a_count);
@@ -731,7 +737,8 @@ posix_acl_to_xattr(struct user_namespace *user_ns, const struct posix_acl *acl,
                return real_size;
        if (real_size > size)
                return -ERANGE;
-       
+
+       ext_entry = ext_acl->a_entries;
        ext_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION);
 
        for (n=0; n < acl->a_count; n++, ext_entry++) {