linux-kernel - Re: smp_call_function

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: <20150401161047.GD12730@canonical.com>
Date:	Wed, 1 Apr 2015 11:10:48 -0500
From:	Chris J Arges <chris.j.arges@...onical.com>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Rafael David Tinoco <inaddy@...ntu.com>,
	Peter Anvin <hpa@...or.com>,
	Jiang Liu <jiang.liu@...ux.intel.com>,
	Peter Zijlstra <peterz@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Jens Axboe <axboe@...nel.dk>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Gema Gomez <gema.gomez-solano@...onical.com>,
	the arch/x86 maintainers <x86@...nel.org>
Subject: Re: smp_call_function_single lockups

On Wed, Apr 01, 2015 at 02:43:36PM +0200, Ingo Molnar wrote:

<snip> 
> Have you already tested whether the hang goes away if you remove 
> irq-affinity fiddling daemons from the system? Do you have irqbalance 
> installed or similar mechanisms?
> 
> Thanks,
> 
> 	Ingo
>

Even with irqbalance removed from the L0/L1 machines the hang still occurs.
Using the debug patch as described here:
https://lkml.org/lkml/2015/4/1/338

This results in no 'apic: vector* or 'ack_APIC*' messages being displayed.

--chris
--
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/