blob: ad37d32f8c9920c1eb489e55dc085461bc61689c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2024 Oracle. All Rights Reserved.
#
# FS QA Test No. 743
#
# This is a regression test for a kernel hang that I saw when creating a memory
# mapping, injecting EIO errors on the block device, and invoking
# MADV_POPULATE_READ on the mapping to fault in the pages.
#
. ./common/preamble
_begin_fstest auto rw eio
# Override the default cleanup function.
_cleanup()
{
cd /
rm -f $tmp.*
_dmerror_unmount
_dmerror_cleanup
}
# Import common functions.
. ./common/dmerror
_fixed_by_kernel_commit XXXXXXXXXXXX \
"mm/madvise: make MADV_POPULATE_(READ|WRITE) handle VM_FAULT_RETRY properly"
# real QA test starts here
# Modify as appropriate.
_supported_fs generic
_require_xfs_io_command madvise -R
_require_scratch
_require_dm_target error
_require_command "$TIMEOUT_PROG" "timeout"
_scratch_mkfs >> $seqres.full 2>&1
_dmerror_init
filesz=2m
# Create a file that we'll read, then cycle mount to zap pagecache
_dmerror_mount
$XFS_IO_PROG -f -c "pwrite -S 0x58 0 $filesz" "$SCRATCH_MNT/a" >> $seqres.full
_dmerror_unmount
_dmerror_mount
# Try to read the file data in a regular fashion just to prove that it works.
echo read with no errors
$TIMEOUT_PROG -s KILL 10s $XFS_IO_PROG -c "mmap -r 0 $filesz" -c "madvise -R 0 $filesz" "$SCRATCH_MNT/a"
_dmerror_unmount
_dmerror_mount
# Load file metadata and induce EIO errors on read. Try to provoke the kernel;
# kill the process after 10s so we can clean up.
stat "$SCRATCH_MNT/a" >> $seqres.full
echo read with IO errors
_dmerror_load_error_table
$TIMEOUT_PROG -s KILL 10s $XFS_IO_PROG -c "mmap -r 0 $filesz" -c "madvise -R 0 $filesz" "$SCRATCH_MNT/a"
_dmerror_load_working_table
# success, all done
status=0
exit
|
