linux-kernel - Re: NOHZ: local_softirq

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Message-ID: <4AD1BF06.3050103@phoenixsoftware.de>
Date:	Sun, 11 Oct 2009 13:18:30 +0200
From:	Tilman Schmidt <t.schmidt@...enixsoftware.de>
To:	Johannes Berg <johannes@...solutions.net>
CC:	Dave Young <hidave.darkstar@...il.com>,
	linux-kernel@...r.kernel.org, tglx@...utronix.de,
	linux-wireless <linux-wireless@...r.kernel.org>,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: NOHZ: local_softirq_pending 08

On Sun, 11 Oct 2009 12:08:55 +0200, Johannes Berg wrote:
> On Sun, 2009-10-11 at 17:52 +0800, Dave Young wrote:
> 
>> With kernel 2.6.32-rc3-00052-g0eca52a I got following KERN_ERR
>> messages just while using firefox:
>>
>> [  130.527399] NOHZ: local_softirq_pending 08
> 
>> Any idea? or known issue?
> 
> Are you using b43 (or wl12x1)? If so, it's a known issue, but the driver
> was recently left without an active maintainer in a brouhaha about a bug
> fix.
> 
> Cf. http://thread.gmane.org/gmane.linux.kernel.wireless.general/39440

Can you explain a bit more what that message is about?
I am encountering it in a completely different context
(PPP over ISDN) and I would like to know where to start
looking for the cause and developing a fix. The thread
on linux.kernel.wireless.general only seems to address
the specific situation in the wireless stack.

Thanks,
Tilman

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