erofs pointer corruption and kernel crash

[Gao Xiang]

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?

I guess it's related to a relatively new experimental
feature (-E48bit + encoded extents + zstd) introduced in v6.15.

If you don't use this new feature, the issue may not be
reproduced anymore.

Thanks,
Gao Xiang


>>> BR2_TARGET_ROOTFS_EROFS_FRAGMENTS=y
>>> BR2_TARGET_ROOTFS_EROFS_PCLUSTERSIZE=65536
>>>
>>>
>>>
>>> May be You know how to fix it or some ideas? Because we are new at erofs and need to discover and
>>> learn its source code.
>>>
>>> Thanks
>>