linux-kernel - Re: frequent lockups in 3.18rc4

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: <CA+55aFwA7uOFgb-Y4dHS099HuoV+oQvxXf+cfZYh9T7H_c0PHA@mail.gmail.com>
Date:	Sun, 21 Dec 2014 14:19:03 -0800
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Dave Jones <davej@...hat.com>, Chris Mason <clm@...com>,
	Mike Galbraith <umgwanakikbuti@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Dâniel Fraga <fragabr@...il.com>,
	Sasha Levin <sasha.levin@...cle.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Suresh Siddha <sbsiddha@...il.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Peter Anvin <hpa@...ux.intel.com>
Subject: Re: frequent lockups in 3.18rc4

On Sun, Dec 21, 2014 at 1:22 PM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>
> So the range of 1-251 seconds  is not entirely random. It's all in
> that "32-bit HPET range".

DaveJ, I assume it's too late now, and you don't effectively have any
access to the machine any more, but "hpet=disable" or "nohpet" on the
command line might be worth trying if you ever see that piece of
hardware again.

And for posterity, do you have a dmidecode with motherboard/BIOS
information for the problematic machine? And your configuration?

And finally, and stupidly, is there any chance that you have anything
accessing /dev/hpet?

                       Linus
--
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/