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authorZorro Lang <zlang@redhat.com>2017-05-15 08:40:02 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-06-07 12:07:52 +0200
commit0e542792a046c788f39ab13fcd68c7ba65930407 (patch)
treeac772594cbd79472c08a7e68846a1a53b6bf7b96
parentf60d76efa91a1450c73589d9c61b3af74bf2cf73 (diff)
downloadlinux-aarch64-0e542792a046c788f39ab13fcd68c7ba65930407.tar.gz
xfs: bad assertion for delalloc an extent that start at i_size
commit 892d2a5f705723b2cb488bfb38bcbdcf83273184 upstream. By run fsstress long enough time enough in RHEL-7, I find an assertion failure (harder to reproduce on linux-4.11, but problem is still there): XFS: Assertion failed: (iflags & BMV_IF_DELALLOC) != 0, file: fs/xfs/xfs_bmap_util.c The assertion is in xfs_getbmap() funciton: if (map[i].br_startblock == DELAYSTARTBLOCK && --> map[i].br_startoff <= XFS_B_TO_FSB(mp, XFS_ISIZE(ip))) ASSERT((iflags & BMV_IF_DELALLOC) != 0); When map[i].br_startoff == XFS_B_TO_FSB(mp, XFS_ISIZE(ip)), the startoff is just at EOF. But we only need to make sure delalloc extents that are within EOF, not include EOF. Signed-off-by: Zorro Lang <zlang@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> 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>
-rw-r--r--fs/xfs/xfs_bmap_util.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index 15be2c973c40..87b495e2f15a 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -722,7 +722,7 @@ xfs_getbmap(
* extents.
*/
if (map[i].br_startblock == DELAYSTARTBLOCK &&
- map[i].br_startoff <= XFS_B_TO_FSB(mp, XFS_ISIZE(ip)))
+ map[i].br_startoff < XFS_B_TO_FSB(mp, XFS_ISIZE(ip)))
ASSERT((iflags & BMV_IF_DELALLOC) != 0);
if (map[i].br_startblock == HOLESTARTBLOCK &&