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From: "Michal Piotrowski" <michal.k.k.piotrowski@gmail.com>
To: "Ingo Molnar" <mingo@elte.hu>
Cc: "Michal Piotrowski" <michal.k.k.piotrowski@googlemail.com>,
	tglx@linutronix.de, LKML <linux-kernel@vger.kernel.org>
Subject: Re: 2.6.20-git15 BUG: soft lockup detected on CPU#0! - timers?
Date: Sat, 24 Feb 2007 23:45:54 +0100	[thread overview]
Message-ID: <6bffcb0e0702241445v562be44y5ddac6d6abdb5131@mail.gmail.com> (raw)
In-Reply-To: <20070223060802.GA8562@elte.hu>

Hi Ingo,

On 23/02/07, Ingo Molnar <mingo@elte.hu> wrote:
>
> Michal,
>
> * Michal Piotrowski <michal.k.k.piotrowski@gmail.com> wrote:
>
> > Here is more
> >
> > hardirqs last  enabled at (30787): [<c0104249>] syscall_exit_work+0x11/0x26
> > hardirqs last disabled at (30788): [<c0103fc9>] ret_from_exception+0x9/0xc
> > softirqs last  enabled at (30202): [<c01265df>] __do_softirq+0xe4/0xea
> > softirqs last disabled at (30193): [<c0106a75>] do_softirq+0x64/0xd1
>
> could you please try the patch below? This is pretty much the only
> condition under which we can silently 'leak' pending softirqs, and
> trigger the new warning: if something does cond_resched_softirq() in
> non-runnable state. (which is a no-no, but nothing enforced this, so it
> could in theory happen.) So the question is, with this patch applied, do
> you get these new warnings from sched.c?

Here is a dmesg after over 25 hours of uptime
http://www.stardust.webpages.pl/files/tbf/bitis-gabonica/2.6.21-rc1/git-dmesg3
nothing new.

Regards,
Michal

-- 
Michal K. K. Piotrowski
LTG - Linux Testers Group (PL)
(http://www.stardust.webpages.pl/ltg/)
LTG - Linux Testers Group (EN)
(http://www.stardust.webpages.pl/linux_testers_group_en/)

  parent reply	other threads:[~2007-02-24 22:45 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-20 18:54 Michal Piotrowski
2007-02-20 21:56 ` Thomas Gleixner
2007-02-20 22:37   ` Michal Piotrowski
2007-02-21 15:33     ` Thomas Gleixner
2007-02-21 15:38       ` Michal Piotrowski
2007-02-21 20:00         ` Thomas Gleixner
2007-02-22  1:47           ` Michal Piotrowski
2007-02-22 10:50             ` Michal Piotrowski
2007-02-23  6:08               ` Ingo Molnar
2007-02-23  7:32                 ` Mike Galbraith
2007-02-23 10:10                 ` Ingo Molnar
2007-02-24 22:45                 ` Michal Piotrowski [this message]
2007-02-25  9:53                   ` Thomas Gleixner
2007-02-26 13:01                     ` Michal Piotrowski
2007-02-26 13:25                       ` [patch] sched: fix SMT scheduler bug Ingo Molnar

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