linux-kernel - Re: slub freelist issue / BUG: unable to handle page fault for address: 000000003ffe0018

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Message-ID: <202006041054.874AA564@keescook>
Date:   Thu, 4 Jun 2020 10:57:05 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Vegard Nossum <vegard.nossum@...cle.com>
Cc:     Vlastimil Babka <vbabka@...e.cz>, Christoph Lameter <cl@...ux.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Marco Elver <elver@...gle.com>,
        Waiman Long <longman@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux MM <linux-mm@...ck.org>
Subject: Re: slub freelist issue / BUG: unable to handle page fault for
 address: 000000003ffe0018

On Thu, Jun 04, 2020 at 07:20:18PM +0200, Vegard Nossum wrote:
> On 2020-06-04 19:18, Vlastimil Babka wrote:
> > On 6/4/20 7:14 PM, Vegard Nossum wrote:
> > > 
> > > Hi all,
> > > 
> > > I ran into a boot problem with latest linus/master
> > > (6929f71e46bdddbf1c4d67c2728648176c67c555) that manifests like this:
> > 
> > Hi, what's the .config you use?
> 
> Pretty much x86_64 defconfig minus a few options (PCI, USB, ...)

Oh yes indeed. I immediately crash in the same way with this config. I'll
start digging...

(defconfig finishes boot)

-Kees

-- 
Kees Cook