From: John L. Hammond <jhammond@whamcloud.com>
Date: Tue, 6 Oct 2020 19:14:29 +0000 (-0500)
Subject: LU-14012 lod: properly initialize lcm in lod_layout_convert()
X-Git-Tag: 2.13.57~132
X-Git-Url: https://git.whamcloud.com/?a=commitdiff_plain;h=6f2a1c911f0a326765e6d11f35bb602daf057948;p=fs%2Flustre-release.git

LU-14012 lod: properly initialize lcm in lod_layout_convert()

In lod_layout_convert() zero out lcm and lcme before constructing the
converted layout.

Signed-off-by: John L. Hammond <jhammond@whamcloud.com>
Change-Id: I40f96d51cb63816a9bfc34217f02ff7c450de974
Reviewed-on: https://review.whamcloud.com/40153
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: Jian Yu <yujian@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
---

diff --git a/lustre/lod/lod_object.c b/lustre/lod/lod_object.c
index 1385967..73dab58 100644
--- a/lustre/lod/lod_object.c
+++ b/lustre/lod/lod_object.c
@@ -3206,13 +3206,13 @@ static int lod_layout_convert(struct lod_thread_info *info)
 	}
 
 	lcm = info->lti_ea_store;
+	memset(lcm, 0, sizeof(*lcm) + sizeof(*lcme));
 	lcm->lcm_magic = cpu_to_le32(LOV_MAGIC_COMP_V1);
 	lcm->lcm_size = cpu_to_le32(size);
 	lcm->lcm_layout_gen = cpu_to_le32(le16_to_cpu(
 						lmm_save->lmm_layout_gen));
 	lcm->lcm_flags = cpu_to_le16(LCM_FL_NONE);
 	lcm->lcm_entry_count = cpu_to_le16(1);
-	lcm->lcm_mirror_count = 0;
 
 	lcme = &lcm->lcm_entries[0];
 	lcme->lcme_flags = cpu_to_le32(LCME_FL_INIT);