Re: KASAN: use-after-free Read in addr_handler

From: Dmitry Vyukov
Date: Tue Mar 26 2019 - 05:56:26 EST


On Sun, Mar 24, 2019 at 2:21 PM Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
>
> On Sun, 24 Mar 2019, syzbot wrote:
>
> > syzbot has bisected this bug to:
> >
> > commit 4f4c867c91e644fc9d461c8c5cf2f09d6d5bcac2
> > Author: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
> > Date: Tue Oct 2 08:54:16 2018 +0000
> >
> > irqchip/irq-mvebu-icu: Support ICU subnodes
>
> Yet another bogus bisect result. Why? That code is ARM only and cannot
> influence x86 by any means.

>From the bisection log it seems the process diverged to a different
bug mid way ("WARNING: ODEBUG bug in netdev_freemem").