From cfa7d8964bc41463ecf1fcea75a18459e63723f8 Mon Sep 17 00:00:00 2001
From: "Darrick J. Wong" <darrick.wong@oracle.com>
Date: Thu, 28 Jun 2018 15:11:55 -0500
Subject: [PATCH] xfs: add missing rmap error return

Source kernel commit: 52101dfe56f71d8cb140c2440d95affa25a53746

xfs_rmap_lookup_le_range can return errors, so we need to check for
them and bail out.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
---
 libxfs/xfs_rmap.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libxfs/xfs_rmap.c b/libxfs/xfs_rmap.c
index 09f74a5f4..7ed309179 100644
--- a/libxfs/xfs_rmap.c
+++ b/libxfs/xfs_rmap.c
@@ -1372,6 +1372,8 @@ xfs_rmap_convert_shared(
 	 */
 	error = xfs_rmap_lookup_le_range(cur, bno, owner, offset, flags,
 			&PREV, &i);
+	if (error)
+		goto done;
 	XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done);
 
 	ASSERT(PREV.rm_offset <= offset);
-- 
2.47.2