Re: erofs pointer corruption and kernel crash

From: Gao Xiang

Date: Fri Apr 10 2026 - 06:12:28 EST




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