Re: [PATCH] fs: erofs: add sanity check for kobject in erofs_unregister_sysfs

[Chao Yu]

On 2022/3/15 21:28, Dongliang Mu wrote:
> From: Dongliang Mu <mudongliangabcd@xxxxxxxxx>
>
> Syzkaller hit 'WARNING: kobject bug in erofs_unregister_sysfs'. This bug
> is triggered by injecting fault in kobject_init_and_add of
> erofs_unregister_sysfs.
>
> Fix this by adding sanity check for kobject in erofs_unregister_sysfs
>
> Note that I've tested the patch and the crash does not occur any more.
>
> Signed-off-by: Dongliang Mu <mudongliangabcd@xxxxxxxxx>

Reviewed-by: Chao Yu <chao@xxxxxxxxxx>

Thanks,