linux-kernel - [PATCH 5.4 063/129] xfs: fix xfs_bmap_validate_extent

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Date:   Tue,  8 Sep 2020 17:25:04 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        "Darrick J. Wong" <darrick.wong@...cle.com>,
        Eric Sandeen <sandeen@...hat.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 063/129] xfs: fix xfs_bmap_validate_extent_raw when checking attr fork of rt files

From: Darrick J. Wong <darrick.wong@...cle.com>

[ Upstream commit d0c20d38af135b2b4b90aa59df7878ef0c8fbef4 ]

The realtime flag only applies to the data fork, so don't use the
realtime block number checks on the attr fork of a realtime file.

Fixes: 30b0984d9117 ("xfs: refactor bmap record validation")
Signed-off-by: Darrick J. Wong <darrick.wong@...cle.com>
Reviewed-by: Eric Sandeen <sandeen@...hat.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 fs/xfs/libxfs/xfs_bmap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c
index 3f76da11197c4..19a600443b9ee 100644
--- a/fs/xfs/libxfs/xfs_bmap.c
+++ b/fs/xfs/libxfs/xfs_bmap.c
@@ -6179,7 +6179,7 @@ xfs_bmap_validate_extent(
 
 	isrt = XFS_IS_REALTIME_INODE(ip);
 	endfsb = irec->br_startblock + irec->br_blockcount - 1;
-	if (isrt) {
+	if (isrt && whichfork == XFS_DATA_FORK) {
 		if (!xfs_verify_rtbno(mp, irec->br_startblock))
 			return __this_address;
 		if (!xfs_verify_rtbno(mp, endfsb))
-- 
2.25.1