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|
#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2016 Red Hat Inc. All Rights Reserved.
#
# FS QA Test 411
#
# This test cover linux commit 7ae8fd0, kernel two mnt_group_id == 0
# (no peer)vfsmount as peers. It case kernel dereference a NULL
# address.
#
. ./common/preamble
_begin_fstest auto quick mount
# Override the default cleanup function.
_cleanup()
{
cd /
rm -f $tmp.*
_clear_mount_stack
# make sure there's no bug cause dentry isn't be freed
rm -rf $MNTHEAD
}
# Import common functions.
. ./common/filter
# real QA test starts here
_supported_fs generic
_require_test
_require_scratch
_require_local_device $SCRATCH_DEV
fs_stress()
{
local target=$1
$FSSTRESS_PROG -z -n 500 -p 5 \
-f creat=5 \
-f mkdir=5 \
-f dwrite=1 \
-f dread=1 \
-f link=2 \
-f rename=1 \
-f rmdir=2 \
-f unlink=1 \
-f symlink=1 \
-f write=1 \
-f read=1 \
-f chown=1 \
-f getdents=1 \
-f fiemap=1 \
-d $target >>$seqres.full
sync
}
# prepare some mountpoint dir
MNTHEAD=$TEST_DIR/$seq
rm -rf $MNTHEAD
mkdir $MNTHEAD 2>>$seqres.full
mpA=$MNTHEAD/"$$"_mpA
mpB=$MNTHEAD/"$$"_mpB
mpC=$MNTHEAD/"$$"_mpC
find_mnt()
{
echo "------"
findmnt -n -o TARGET,SOURCE $SCRATCH_DEV | \
sed -e "s;$mpA;mpA;g" \
-e "s;$mpB;mpB;g" \
-e "s;$mpC;mpC;g" | \
_filter_spaces | _filter_testdir_and_scratch | sort
echo "======"
}
start_test()
{
local type=$1
_scratch_mkfs >$seqres.full 2>&1
_get_mount -t $FSTYP $SCRATCH_DEV $MNTHEAD
$MOUNT_PROG --make-"${type}" $MNTHEAD
mkdir $mpA $mpB $mpC
}
end_test()
{
_clear_mount_stack
rm -rf $mpA $mpB $mpC
}
#
# shared New FS shared
# -----------------------[A/mnt1]----------------------
# | | |
# | bind | bind | New FS
# [C/mnt1]--[slave C]<------[shared A]------>[slave B]--[B/mnt1]--[B/mnt1/mnt2]
#
crash_test()
{
start_test shared
_get_mount -t $FSTYP $SCRATCH_DEV $mpA
mkdir $mpA/mnt1
$MOUNT_PROG --make-shared $mpA
_get_mount --bind $mpA $mpB
_get_mount --bind $mpA $mpC
$MOUNT_PROG --make-slave $mpB
$MOUNT_PROG --make-slave $mpC
_get_mount -t $FSTYP $SCRATCH_DEV $mpA/mnt1
mkdir $mpA/mnt1/mnt2
_get_mount -t $FSTYP $SCRATCH_DEV $mpB/mnt1/mnt2
find_mnt
fs_stress $mpB/mnt1/mnt2
end_test
echo "crash test passed"
}
crash_test
# success, all done
status=0
exit
|
