linux-kernel - Re: [PATCH] panic: release stale console lock to always get the logbuf printed out

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]

Message-ID: <874mi0us7c.fsf@vitty.brq.redhat.com>
Date:	Fri, 09 Oct 2015 14:44:39 +0200
From:	Vitaly Kuznetsov <vkuznets@...hat.com>
To:	Jan Kara <jack@...e.cz>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	HATAYAMA Daisuke <d.hatayama@...fujitsu.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Jiri Kosina <jkosina@...e.cz>, Baoquan He <bhe@...hat.com>,
	Prarit Bhargava <prarit@...hat.com>,
	Xie XiuQi <xiexiuqi@...wei.com>,
	Seth Jennings <sjenning@...hat.com>,
	linux-kernel@...r.kernel.org,
	"K. Y. Srinivasan" <kys@...rosoft.com>
Subject: Re: [PATCH] panic: release stale console lock to always get the logbuf printed out

Vitaly Kuznetsov <vkuznets@...hat.com> writes:

> Andrew Morton <akpm@...ux-foundation.org> writes:
>
>> On Thu, 08 Oct 2015 12:03:25 +0200 Vitaly Kuznetsov <vkuznets@...hat.com> wrote:
>>
>>> > If we picked up patch "kernel: Avoid softlockups in
>>> > stop_machine() during heavy printing" from my series (it's completely
>>> > independent, I've attached the latest version), the result would look less
>>> > hacky to me (attached). Thoughts?
>>> 
>>> Haven't tested it but should also work...
>>
>> Well, I expect we'll be merging Jan's lockup-avoidance code fairly
>> soon.  There's no point in solving the same problem twice.
>>
>> Sp please, do take a closer look at the proposed patches and if
>> possible, runtime test them?
>
> Sure, I'll take a look.

Jan,

I've just tested patches you suggested and it seems they also solve the
issue I observe. Feel free to add:

Tested-by: Vitaly Kuznetsov <vkuznets@...hat.com>

Thanks!

-- 
  Vitaly
--
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/