linux-kernel - Re: IO-APIC + timer doesn't work

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Message-ID: <20061217131033.GA25999@tomodachi.de>
Date:	Sun, 17 Dec 2006 14:10:33 +0100
From:	Tobias Diedrich <ranma+kernel@...edrich.de>
To:	Linus Torvalds <torvalds@...l.org>
Cc:	Tobias Diedrich <ranma+kernel@...edrich.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andi Kleen <ak@...e.de>, Yinghai Lu <yinghai.lu@....com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Andrew Morton <akpm@...l.org>
Subject: Re: IO-APIC + timer doesn't work

Linus Torvalds wrote:
> On Sun, 17 Dec 2006, Tobias Diedrich wrote:
> > 
> > No such luck, it still panics and the APIC error is also unchanged.
> 
> Ok. I don't see anything wrong off-hand, but I'll keep the patch in the 
> tree in the hopes that Andi and/or Eric can see what's wrong and solve it.
> 
> If we don't find a solution, I'll have to revert it, but let's give it a 
> few more days. 
> 
> Tobias, can you please make sure to remind me about this if nothing seems 
> to happen? 

Sure.

BTW, I'm also wondering if this secondary Oops is supposed to happen:
http://www.tdiedrich.de/~ranma/2.6.20-rc1-oops2.jpg
I guess the NMI watchdog is never disabled after the test failed?

|[68.908000] Kernel panic - not syncing: IO-APIC + timer doesn't work! Try using the 'noapic' kernel parameter
|[68.908002]
[~4 seconds later]
|[68.908300] NMI Watchdog detected LOCKUP on CPU 0
  ^^^^^^^^^ wrong timestamp?
|[73.637325] CPU 0
|[73.637451] Modules linked in:
|[73.637579] Pid: 1, comm: swapper Not tainted 2.6.20-rc1-amd64 #27
[...]
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