Re: [block] BUG: KASAN: use-after-free in rb_erase+0x1431/0x1970

From	Mike Galbraith <efault@gmx.de>
Newsgroups	linux.kernel
Subject	Re: [block] BUG: KASAN: use-after-free in rb_erase+0x1431/0x1970
Date	2017-03-10 06:00 +0100
Message-ID	<tjkOJ-708-1@gated-at.bofh.it> (permalink)
References	<tj81c-6XD-19@gated-at.bofh.it> <tj9gB-7KS-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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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

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[block] BUG: KASAN: use-after-free in rb_erase+0x1431/0x1970 Mike Galbraith <efault@gmx.de> - 2017-03-09 16:20 +0100
  Re: [block] BUG: KASAN: use-after-free in rb_erase+0x1431/0x1970 Jens Axboe <axboe@kernel.dk> - 2017-03-09 17:40 +0100
    Re: [block] BUG: KASAN: use-after-free in rb_erase+0x1431/0x1970 Mike Galbraith <efault@gmx.de> - 2017-03-10 06:00 +0100

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