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xfs: fix a null pointer dereference in xfs_bmap_extents_to_btree libxfs-4.19-sync
authorShan Hai <shan.hai@oracle.com>
Fri, 5 Oct 2018 02:36:12 +0000 (21:36 -0500)
committerEric Sandeen <sandeen@redhat.com>
Fri, 5 Oct 2018 02:36:12 +0000 (21:36 -0500)
commitb5c71bcd22df6fa891e1c6c178b0871267f78c40
tree00139fd08797ad98be2052aaada186d4fa0d3c19tree
parentc02e03410e8a51959ff376fff301dea8ecb2984fcommit | diff
xfs: fix a null pointer dereference in xfs_bmap_extents_to_btree

Source kernel commit: 01239d77b9dd978863d1a75f0d095ab942a1fe66

Fuzzing tool reports a write to null pointer error in the
xfs_bmap_extents_to_btree, fix it by bailing out on encountering
a null pointer.

Signed-off-by: Shan Hai <shan.hai@oracle.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
libxfs/xfs_bmap.c diff | blob | history
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