From 29d84d6fd7a0bb5c2df79a10bb94440168bb342b Mon Sep 17 00:00:00 2001
From: Jian Yu <jian.yu@intel.com>
Date: Wed, 17 Jan 2018 22:44:14 -0800
Subject: [PATCH] LU-10504 flr: check layout pointer before using it

This patch fixes mirror_create() to check layout pointer
before using it.

Change-Id: Ia1454b5c7fcfcee227d0b954a477cefe5d7bb5f7
Test-Parameters: trivial testlist=sanity-flr
Signed-off-by: Jian Yu <jian.yu@intel.com>
Reviewed-on: https://review.whamcloud.com/30915
Tested-by: Jenkins
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
---
 lustre/utils/lfs.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lustre/utils/lfs.c b/lustre/utils/lfs.c
index 3a387c4..7c866b3 100644
--- a/lustre/utils/lfs.c
+++ b/lustre/utils/lfs.c
@@ -1319,6 +1319,11 @@ static int mirror_create(char *fname, struct mirror_args *mirror_list)
 		cur_mirror = cur_mirror->m_next;
 	}
 
+	if (layout == NULL) {
+		fprintf(stderr, "error: %s: layout is NULL\n", progname);
+		return -EINVAL;
+	}
+
 	rc = llapi_layout_mirror_count_set(layout, mirror_count);
 	if (rc) {
 		rc = -errno;
-- 
1.8.3.1