netdev - Re: 2.6.20.4: NETDEV WATCHDOG and lockups

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Date:	Wed, 4 Apr 2007 16:53:59 +0300
From:	"Denys" <denys@...p.net.lb>
To:	Jarek Poplawski <jarkao2@...pl>,
	Christian Kujau <christian@...ouse.de>
Cc:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	malte@...ouse.de, Francois Romieu <romieu@...zoreil.com>
Subject: Re: 2.6.20.4: NETDEV WATCHDOG and lockups

IMHO it can be hardware issue also, i had something very similar with faulty 
hardware combinations.

On Wed, 4 Apr 2007 13:21:00 +0200, Jarek Poplawski wrote
> On Tue, Apr 03, 2007 at 04:19:46PM +0100, Christian Kujau wrote:
> > On Tue, 3 Apr 2007, Jarek Poplawski wrote:
> > >Did you try with 8139cp instead of 8139too?
> > 
> > Tried that, 8139cp could not be loaded :(
> 
> Sorry for misleading!
> 
> > >(Maybe even try some other card to narrow the problem?)
> > >You could also try to test without ehci, if it's possible.
> > 
> > USB has been disabled completely. After booting with 'acpi=off lapic' 
> > the box survived ~30min then locked up again and rebooted.
> 
> So, it's a lot sooner than before. (BTW, isn't there anything
> in debug log?) I see both CPUs did interrupt handling again.
> Maybe it's a real locking problem. Here are some more
> suggestions for testing (if you don't find anything better):
> - try without SMP, so: 'acpi=off lapic nosmp'
> - lock debugging turned on as much as possible
> plus maybe for curiosity:
> - different CONFIG_HZ
> - 8139TOO_PIO = y
> 
> ....
> > IRQ-problems with the Un-Interruptible-Power-Supply
> 
> I wouldn't be surprised...
> 
> Cheers,
> Jarek P.
> -
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--
Denys Fedoryshchenko
Technical Manager
Virtual ISP S.A.L.

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