nfsd4: fix corruption on setting an ACL.



As of 06f9cc12 "nfsd4: don't create
unnecessary mask acl", any non-trivial ACL will be left with an
unitialized entry, and a trivial ACL may write one entry beyond what's
allocated.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

parent aa07c713

fs/nfsd/nfs4acl.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -590,7 +590,7 @@ posix_state_to_acl(struct posix_acl_state *state, unsigned int flags)
		add_to_mask(state, &state->groups->aces[i].perms);
		}

		if (!state->users->n && !state->groups->n) {
		if (state->users->n \|\| state->groups->n) {
		pace++;
		pace->e_tag = ACL_MASK;
		low_mode_from_nfs4(state->mask.allow, &pace->e_perm, flags);