Re: [syzbot] [block?] WARNING: zero-size vmalloc in disksize_store

[Sergey Senozhatsky]

On (26/09/21 08:53), syzbot wrote:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    73ae59e97596 Merge tag 'erofs-for-7.3-rc1-2' of git://git...
> git tree:       https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux master
> console output: https://syzkaller.appspot.com/x/log.txt?x=11d5d525580000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=c35e49327a11721f
> dashboard link: https://syzkaller.appspot.com/bug?extid=fb23651a7efbea8868ed
> compiler:       aarch64-linux-gnu-gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
> userspace arch: arm64
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=175514c9580000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=123b1005580000

#syz fix: zram: switch to unsigned long indexing