Re: kernel BUG at mm/slab.c:LINE! (2)

From: Dmitry Vyukov
Date: Mon Jul 09 2018 - 12:16:29 EST


On Mon, Jul 9, 2018 at 6:05 PM, Christopher Lameter <cl@xxxxxxxxx> wrote:
> On Sun, 8 Jul 2018, syzbot wrote:
>
>> kernel BUG at mm/slab.c:4421!
>
> Classic location that indicates memory corruption. Can we rerun this with
> CONFIG_SLAB_DEBUG? Alternatively use SLUB debugging for better debugging
> without rebuilding.

This runs with KASAN which is way more powerful than slab/slub debug.

There two other recent crashes in bpf_test_finish which has more info:

https://syzkaller.appspot.com/bug?id=f831c88feddf5f4de09b846bbe53e5b8c06e5c02
https://syzkaller.appspot.com/bug?id=059cee5623ce519359e7440ba6d0d6af8b82694e