linux-kernel - Re: irq_desc use-after-free in smp_irq_move_cleanup

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 25 Nov 2015 17:02:31 -0500
From:	Joe Lawrence <joe.lawrence@...atus.com>
To:	Thomas Gleixner <tglx@...utronix.de>
CC:	LKML <linux-kernel@...r.kernel.org>,
	Jiang Liu <jiang.liu@...ux.intel.com>, <x86@...nel.org>
Subject: Re: irq_desc use-after-free in smp_irq_move_cleanup_interrupt

On 11/25/2015 04:12 PM, Thomas Gleixner wrote:
> On Wed, 25 Nov 2015, Thomas Gleixner wrote:
>> So if CPU1 gets the IPI _BEFORE_ move_in_progress is set to 0, and
>> does not get another IPI before the next move ..... That has been that
>> way forever.
>>
>> Duh. Working on a real fix this time.
>
> Here you go. Completely untested of course.
>

Hi Thomas -- thanks for taking a look!  (Well, the analysis looks like 
more than *just* a look :)

I'll give the patch a go when I get back in the office next week.

-- Joe
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/