linux-kernel - Re: [Bugme-new] [Bug 11543] New: kernel panic: softlockup in tick

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Date:	Tue, 16 Sep 2008 21:56:29 +0400
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Joshua Hoblitt <josh@...litt.com>, Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, bugme-daemon@...zilla.kernel.org,
	j_kernel@...litt.com
Subject: Re: [Bugme-new] [Bug 11543] New: kernel panic: softlockup in
	tick_periodic() ???

[Thomas Gleixner - Tue, Sep 16, 2008 at 07:14:40AM -0700]
| On Mon, 15 Sep 2008, Joshua Hoblitt wrote:
| 
| > In addition to the deadlocks, we still have the watchdog warning:
| > 
| > [    0.460034] Testing NMI watchdog ... 
| > [    0.532557] WARNING: CPU#0: NMI appears to be stuck (0->0)!
| > [    0.533301] Please report this to bugzilla.kernel.org,
| > [    0.536635] and attach the output of the 'dmesg' command.
| > 
| > Perhaps an HPET problem:
| > 
| > [    0.993800] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 31
| > [    0.999969] hpet0: 3 32-bit timers, 25000000 Hz
| > [    1.004396] ACPI: RTC can wake from S4
| > [    1.006637] Clockevents: could not switch to one-shot
| > mode:<6>Clockevents: could not switch to one-shot mode: lapic is not functional.
| > [    1.009844] Could not switch to high resolution mode on CPU 3
| > [    1.009848] Clockevents: could not switch to one-shot mode: lapic is not functional.
| > [    1.009852] Could not switch to high resolution mode on CPU 2
| > [    1.009855] Clockevents: could not switch to one-shot mode: lapic is not functional.
| > [    1.009858] Could not switch to high resolution mode on CPU 1
| > [    1.009969]  lapic is not functional.
| > [    1.056944] Could not switch to high resolution mode on CPU 0
| 
| No, that's documented behaviour:
| 
| > > > [    0.126660] APIC timer registered as dummy, due to nmi_watchdog=1!
| 
| Can you try nmi_watchdog=2 ?
| 
| Thanks,
| 
| 	tglx
| 

And get apic=debug a try too please. I remember there
was a problem with SB600 on ACPI side (but they should
be already fixed)

		- Cyrill -
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