erofs pointer corruption and kernel crash

[Gao Xiang]

On 2026/4/10 18:03, Arseniy Krasnov wrote:
> 
> 
> 10.04.2026 13:01, Gao Xiang пишет:
>>
>>
>> On 2026/4/10 17:59, Arseniy Krasnov wrote:
>>>
>>>
>>> 10.04.2026 12:20, Gao Xiang wrote:
>>>>
>>>>
>>>> On 2026/4/10 16:55, Arseniy Krasnov wrote:
>>>>>
>>>>>
>>>>
>>>> ...
>>>>
>>>>>>>
>>>>>>> BR2_TARGET_ROOTFS_EROFS=y
>>>>>>> BR2_TARGET_ROOTFS_EROFS_CUSTOM_COMPRESSION=y
>>>>>>> BR2_TARGET_ROOTFS_EROFS_COMPRESSION_ALGORITHMS="zstd,22 --max-extent-bytes 65536 -E48bit"
>>>>
>>>> btw, may I ask what's the erofs-utils version?
>>>> erofs-utils 1.9?
>>>
>>> We have 1.8.5 erofs-utils
>>
>> 1.8.5 shouldn't have `-E48bit` support, that is my question.
> 
> You mean to try to reproduce with 1.9 utils ?

Nope, I meant

BR2_TARGET_ROOTFS_EROFS_COMPRESSION_ALGORITHMS="zstd,22 --max-extent-bytes 65536 -E48bit"

is invalid in erofs-utils 1.8.5.

If you were using erofs-utils 1.9+, that may be due to
the new `-E48bit`;

but you said you are using erofs-utils 1.8.5, that makes
me feel confused.

Thanks,
Gao Xiang