About Segmentation fault of mkfs.erofs in AOSP

[Gao Xiang]

Hi Yue,

On Tue, Dec 01, 2020 at 07:23:09PM +0800, Yue Hu wrote:
> hi guys,
> 
> I'm trying using erofs for super.img(dynamic partition) under Android 10. But i have met an issue below when building images:
> 
> ```log
> EROFS: write_uncompressed_block() Line[140] Writing 3517 uncompressed data to block 63950
> EROFS: erofs_mkfs_build_tree() Line[1011] add file /tmp/merge_target_files_jnIVhM/output/VENDOR/etc/xtwifi.conf (nid 8185600, type 1)
> EROFS: erofs_mkfs_build_tree() Line[1011] add file /tmp/merge_target_files_jnIVhM/output/VENDOR/etc (nid 1790208, type 2)
> out/host/linux-x86/bin/mkerofsimage.sh: line 79: 188014 Segmentation fault      (core dumped) $MAKE_EROFS_CMD
> ```
> 
> Have you met this kind of issue? I'm trying to debug the problem, looks like memory related.
> 
> BTW: i'm using latest erofs-utils in AOSP master branch (https://android.googlesource.com/platform/external/erofs-utils/).

Which lz4 version is used? it would be better to use lz4 1.9.3
(or 1.9.2 with some unexpected CR issues.)
For more details, please see README.

If the expected lz4 version is used, could you kindly leave gdb
backtrace message here as well? 

Thanks,
Gao Xiang

> 
> Thx.
>