[RFC PATCH v2 0/3] btrfs: add error injection support for checksum verification

[Song Chen]

Hi David,

If no maintainer else sees it and comments, i'm going to send a new 
patch, only keep btrfs part and withdraw rest, and take care of sashiko 
comments as well.

Please still find it, many thanks.

Best regards,

Song



在 2026/9/8 00:13, David Sterba 写道:
> On Fri, Jul 24, 2026 at 10:12:26AM +0800, Song Chen wrote:
>> This patchset adds fault injection support for btrfs_data_csum_ok,
>> enabling controlled simulation of checksum mismatches to test btrfs
>> silent data corruption detection and reporting paths.
>>
>> The first patch extends the error injection framework with a new type,
>> EI_ETYPE_FALSE, which allows bool-returning functions to be overridden
>> with a false return value directly.
>>
>> The second patch marks btrfs_data_csum_ok with ALLOW_ERROR_INJECTION
>> using this new type.
>>
>> The third patch adds a parent field to fei_attr to allow fault injection
>> on a function only when called from a specific parent function.
>>
>> Song Chen (3):
>>    error-injection: Introduce EI_ETYPE_FALSE for fail_function
>>    btrfs: Allow error injection on btrfs_data_csum_ok
>>    error-injection: Introduce parent in fei_attr
> 
> I'm going through my mailbox and found this. No objections to add the
> injection point to btrfs, but the rest is generic fault injection code
> so I can't take it via btrfs tree without acks.
> 
> There are some sashiko comments (as replies in the thread [1]) and there
> have been some changes to btrfs code too so the patchset needs a
> refresh.
> 
> I see maintainers in CC, if somebody could please let us know how to
> proceed.
> 
> [1] https://lore.kernel.org/all/20260724021229.47302-1-chensong_2000@126.com/
> 
>>   arch/arm/lib/error-inject.c           |  6 ++
>>   arch/arm64/lib/error-inject.c         |  6 ++
>>   arch/csky/lib/error-inject.c          |  6 ++
>>   arch/loongarch/lib/error-inject.c     |  6 ++
>>   arch/powerpc/lib/error-inject.c       |  6 ++
>>   arch/riscv/lib/error-inject.c         |  6 ++
>>   arch/s390/lib/error-inject.c          |  6 ++
>>   arch/x86/lib/error-inject.c           |  6 ++
>>   fs/btrfs/inode.c                      |  1 +
>>   include/asm-generic/error-injection.h |  6 ++
>>   kernel/fail_function.c                | 98 ++++++++++++++++++++++++++-
>>   11 files changed, 152 insertions(+), 1 deletion(-)
>