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Re: Lockup with 2.6.9-ac15 related to netconsole

To: Matt Mackall <mpm@xxxxxxxxxxx>
Subject: Re: Lockup with 2.6.9-ac15 related to netconsole
From: Francois Romieu <romieu@xxxxxxxxxxxxx>
Date: Tue, 21 Dec 2004 01:22:18 +0100
Cc: Mark Broadbent <markb@xxxxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxx
In-reply-to: <20041220211419.GC5974@waste.org>
References: <59719.192.102.214.6.1103214002.squirrel@webmail.wetlettuce.com> <20041216211024.GK2767@waste.org> <34721.192.102.214.6.1103274614.squirrel@webmail.wetlettuce.com> <20041217215752.GP2767@waste.org> <20041217233524.GA11202@electric-eye.fr.zoreil.com> <36901.192.102.214.6.1103535728.squirrel@webmail.wetlettuce.com> <20041220211419.GC5974@waste.org>
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Matt Mackall <mpm@xxxxxxxxxxx> :
> On Mon, Dec 20, 2004 at 09:42:08AM -0000, Mark Broadbent wrote:
> > 
> > Exactly the same happens, I still get a 'NMI Watchdog detected LOCKUP'
> > with the r8169 device using the above patch on top of 2.6.10-rc3-bk10.
> 
> Ok, that suggests a problem localized to netpoll itself. Do you have
> spinlock debugging turned on by any chance? 

Any chance of:
1 dev_queue_xmit
2 dev->xmit_lock taken
3 interruption
4 printk
5 netconsole write
6 dev->xmit_lock again
7 lockup

?

This is probably the silly question of the day.

--
Ueimor

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