linux-kernel - Re: [block] BUG: KASAN: use-after-free in rb

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Message-ID: <1489121945.13992.1.camel@gmx.de>
Date:   Fri, 10 Mar 2017 05:59:05 +0100
From:   Mike Galbraith <efault@....de>
To:     Jens Axboe <axboe@...nel.dk>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [block] BUG: KASAN: use-after-free in rb_erase+0x1431/0x1970

On Thu, 2017-03-09 at 08:38 -0700, Jens Axboe wrote:
> On 03/09/2017 08:16 AM, Mike Galbraith wrote:
> > Greetings,
> > 
> > Building master.today with kasan enabled (because I saw the same when
> > trying out kasan on rt), the below fell out.
> > 
> > Config is enterprise based (tune for maximum build time), plus PREEMPT.
> > 
> > [    5.335444] ==================================================================
> > [    5.337030] BUG: KASAN: use-after-free in rb_erase+0x1431/0x1970 at addr ffff88035e78abb0
> > [    5.338642] Write of size 8 by task swapper/7/0
> > [    5.340204] CPU: 7 PID: 0 Comm: swapper/7 Tainted: G            E   4.11.0-kasan #160
> > [    5.341774] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
> 
> Should be fixed in my for-linus branch, it'll go out soon. If you want
> to verify, pull:
> 
> git://git.kernel.dk/linux-block for-linus
> 
> into master and see if that works for you.

Yup, all better.

	-Mike