On 8/15/25 05:18, Zorro Lang wrote:
> On Thu, Aug 14, 2025 at 05:07:12PM +0800, Chao Yu wrote:
>> This is a regression test:
>> 1. create directory
>> 2. add a new xattr entry to create xattr node
>> 3. use inject.f2fs to inject nid of xattr node w/ ino in a file
>> 4. check whether f2fs kernel module will detect and report such
>>    corruption in the file
>>
>> Cc: Jaegeuk Kim <jaeg...@kernel.org>
>> Signed-off-by: Chao Yu <c...@kernel.org>
>> ---
>> v3:
>> - use _require_scratch_nocheck instead of _require_scratch
>> - add missing _require_attrs user
>> - add comments for why exporting MKFS_OPTIONS=""
>>  tests/f2fs/020     | 51 ++++++++++++++++++++++++++++++++++++++++++++++
>>  tests/f2fs/020.out |  2 ++
>>  2 files changed, 53 insertions(+)
>>  create mode 100755 tests/f2fs/020
>>  create mode 100644 tests/f2fs/020.out
>>
>> diff --git a/tests/f2fs/020 b/tests/f2fs/020
>> new file mode 100755
>> index 00000000..7ce1f92f
>> --- /dev/null
>> +++ b/tests/f2fs/020
>> @@ -0,0 +1,51 @@
>> +#! /bin/bash
>> +# SPDX-License-Identifier: GPL-2.0
>> +# Copyright (c) 2025 Chao Yu.  All Rights Reserved.
>> +#
>> +# FS QA Test No. f2fs/020
>> +#
>> +# This is a regression test:
>> +# 1. create directory
>> +# 2. add a new xattr entry to create xattr node
>> +# 3. use inject.f2fs to inject nid of xattr node w/ ino in a file
>> +# 4. check whether f2fs kernel module will detect and report such
>> +#    corruption in the file
>> +#
>> +. ./common/preamble
>> +_begin_fstest auto quick rw
>> +
>> +. ./common/attr
>> +
>> +_fixed_by_kernel_commit 061cf3a84bde \
>> +    "f2fs: fix to do sanity check on ino and xnid"
>> +
>> +_require_scratch_nocheck
>> +_require_command "$F2FS_INJECT_PROG" inject.f2fs
>> +_require_attrs user
>> +
>> +# remove all mkfs options to avoid layout change of on-disk inode
>> +export MKFS_OPTIONS=""
>> +
>> +testdir=$SCRATCH_MNT/testdir
>> +
>> +_scratch_mkfs >> $seqres.full
>> +_scratch_mount "-o user_xattr,noinline_xattr"
>> +
>> +mkdir $testdir
>> +# add a new xattr entry to create xattr node
>> +$SETFATTR_PROG -n user.abc -v 123 $testdir
>> +
>> +_scratch_unmount
>> +
>> +# inject i_xattr_nid w/ nid of inode node
>> +$F2FS_INJECT_PROG --node --mb i_xattr_nid --nid 4 --val 4 $SCRATCH_DEV >> 
>> $seqres.full

Zorro, I missed one thing, this testcase relies on a f2fs-tools patch, please 
apply
this before running the testcase.

https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs-tools.git/commit/?h=dev-test&id=2174461cdd0a22edc5e7d172605bff4740582438

Do I need to create a _require_* function for f2fs to verify whether f2fs-tools
support the required feature or not?

>> +
>> +_scratch_mount

Oh, I may missed to add "-o acl,user_xattr" here.

>> +# may potentially trigger a deadlock w/ double inode_lock on parent's inode
>> +mkdir $testdir/dir >> $seqres.full 2>&1
>> +_scratch_unmount
> 
> Can you provide a test result to prove this test case trigger a failure
> on general kernel (not debug kernel). If it can, then this version is good
> to me :)

Well, expectation is it will hang kernel, so that the f2fs/020 will stop here
once we encounter the issue.

Thanks,

> 
> Thanks,
> Zorro
> 
>> +
>> +echo "Silence is golden"
>> +
>> +status=0
>> +exit
>> diff --git a/tests/f2fs/020.out b/tests/f2fs/020.out
>> new file mode 100644
>> index 00000000..20d7944e
>> --- /dev/null
>> +++ b/tests/f2fs/020.out
>> @@ -0,0 +1,2 @@
>> +QA output created by 020
>> +Silence is golden
>> -- 
>> 2.49.0
>>
> 



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