From: Christoph Hellwig <hch@lst.de>
Date: Tue, 11 Apr 2017 23:45:52 +0000 (-0700)
Subject: xfs: fix integer truncation in xfs_bmap_remap_alloc
X-Git-Tag: v4.11.4~16
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=23da04dcc3af73fd69ed4229bf8e095ed524d7c5;p=thirdparty%2Fkernel%2Fstable.git

xfs: fix integer truncation in xfs_bmap_remap_alloc

commit 52813fb13ff90bd9c39a93446cbf1103c290b6e9 upstream.

bno should be a xfs_fsblock_t, which is 64-bit wides instead of a
xfs_aglock_t, which truncates the value to 32 bits.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c
index 9bd104f329089..2a426d127e050 100644
--- a/fs/xfs/libxfs/xfs_bmap.c
+++ b/fs/xfs/libxfs/xfs_bmap.c
@@ -3863,7 +3863,7 @@ xfs_bmap_remap_alloc(
 {
 	struct xfs_trans	*tp = ap->tp;
 	struct xfs_mount	*mp = tp->t_mountp;
-	xfs_agblock_t		bno;
+	xfs_fsblock_t		bno;
 	struct xfs_alloc_arg	args;
 	int			error;