criu: pie -- Zap parasite_dump_creds::gids

Fixes #95
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

criu/pie/parasite.c

@@ -250,6 +250,16 @@ static int dump_creds(struct parasite_dump_creds *args)
 
 	args->uids[3] = sys_setfsuid(-1L);
 
+	/*
+	 * FIXME In https://github.com/xemul/criu/issues/95 it is
+	 * been reported that only low 16 bits are set upon syscall
+	 * on ARMv7.
+	 *
+	 * We may rather need implement builtin-memset and clear the
+	 * whole memory needed here.
+	 */
+	args->gids[0] = args->gids[1] = args->gids[2] = args->gids[3] = 0;
+
 	ret = sys_getresgid(&args->gids[0], &args->gids[1], &args->gids[2]);
 	if (ret) {
 		pr_err("Unable to get uids: %d\n", ret);