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[08/20] lustre: lmv: check stripe FID sanity

Message ID 1592065636-28333-9-git-send-email-jsimmons@infradead.org (mailing list archive)
State New, archived
Headers show
Series lustre: patches landed for week of June 8 2020 | expand

Commit Message

James Simmons June 13, 2020, 4:27 p.m. UTC
From: Lai Siyao <lai.siyao@whamcloud.com>

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

WC-bug-id: https://jira.whamcloud.com/browse/LU-13437
Lustre-commit: 698a496aac51e ("LU-13437 lmv: check stripe FID sanity")
Signed-off-by: Lai Siyao <lai.siyao@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/38560
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Hongchao Zhang <hongchao@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
 fs/lustre/lmv/lmv_obd.c | 4 ++++
 1 file changed, 4 insertions(+)
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diff --git a/fs/lustre/lmv/lmv_obd.c b/fs/lustre/lmv/lmv_obd.c
index 4583cea..203a17b 100644
--- a/fs/lustre/lmv/lmv_obd.c
+++ b/fs/lustre/lmv/lmv_obd.c
@@ -1539,6 +1539,10 @@  static struct lu_tgt_desc *lmv_locate_tgt_rr(struct lmv_obd *lmv, u32 *mdt)
 			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);