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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2018 Oracle, Inc. All Rights Reserved.
#
# FS QA Test No. 511
#
# Test a specific sequence of fsx operations that causes an mmap read past
# eof to return nonzero contents.
#
. ./common/preamble
_begin_fstest auto quick rw zero prealloc
# Import common functions.
. ./common/punch
# real QA test starts here
_supported_fs generic
_require_scratch
_require_xfs_io_command "falloc" "-k"
_require_xfs_io_command "fzero"
_scratch_mkfs_sized $((1024 * 1024 * 256)) >>$seqres.full 2>&1
_scratch_mount
$XFS_IO_PROG -fc "pwrite 0 256m" -c fsync $SCRATCH_MNT/file >>$seqres.full 2>&1
rm -f $SCRATCH_MNT/file
cat >> $tmp.fsxops << ENDL
truncate 0x0 0x1f0d6 0x380e1
write 0x1ad87 0x6c99 0x180d6
zero_range 0x14426 0xd3aa 0x21a20 keep_size
mapread 0x1f69a 0x2386 0x21a20
ENDL
victim=$SCRATCH_MNT/a
touch $victim
$here/ltp/fsx --replay-ops $tmp.fsxops $victim > $tmp.output 2>&1 || cat $tmp.output
echo "Silence is golden"
status=0
exit
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