From 698a496aac51e11791717a9cbd0a86b3525f4557 Mon Sep 17 00:00:00 2001
From: Lai Siyao <lai.siyao@whamcloud.com>
Date: Fri, 8 May 2020 22:53:47 +0800
Subject: [PATCH] LU-13437 lmv: check stripe FID sanity

Striped directory layout may be broken, if some stripe FID is insane,
return -ENODEV.

Signed-off-by: Lai Siyao <lai.siyao@whamcloud.com>
Change-Id: I7ed8c7c561e34625e2cb29bfd14bc0ecf3fce46c
Reviewed-on: https://review.whamcloud.com/38560
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Hongchao Zhang <hongchao@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
---
 lustre/lmv/lmv_obd.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lustre/lmv/lmv_obd.c b/lustre/lmv/lmv_obd.c
index 062a44a..3a2db46 100644
--- a/lustre/lmv/lmv_obd.c
+++ b/lustre/lmv/lmv_obd.c
@@ -1569,6 +1569,10 @@ lmv_locate_tgt_by_name(struct lmv_obd *lmv, struct lmv_stripe_md *lsm,
 			return ERR_CAST(oinfo);
 	}
 
+	/* check stripe FID is sane */
+	if (!fid_is_sane(&oinfo->lmo_fid))
+		return ERR_PTR(-ENODEV);
+
 	*fid = oinfo->lmo_fid;
 	*mds = oinfo->lmo_mds;
 	tgt = lmv_tgt(lmv, oinfo->lmo_mds);
-- 
1.8.3.1