linux-kernel - Re: 2.6.23-rc5: possible irq lock inversion dependency detected

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Message-Id: <1189425813.21778.13.camel@twins>
Date:	Mon, 10 Sep 2007 14:03:33 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Christian Kujau <lists@...dbynature.de>
Cc:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: 2.6.23-rc5: possible irq lock inversion dependency detected

On Sun, 2007-09-02 at 15:11 +0200, Christian Kujau wrote:
> Hi,
> 
> after upgrading to 2.6.23-rc5 (and applying davem's fix [0]), lockdep 
> was quite noisy when I tried to shape my external (wireless) interface:
> 
> [ 6400.534545] FahCore_78.exe/3552 just changed the state of lock:
> [ 6400.534713]  (&dev->ingress_lock){-+..}, at: [<c038d595>] netif_receive_skb+0x2d5/0x3c0
> [ 6400.534941] but this lock took another, soft-read-irq-unsafe lock in the past:
> [ 6400.535145]  (police_lock){-.--}
> 
> This happened when I executed: http://nerdbynature.de/bits/2.6.23-rc5/qos.sh.txt
> (using iproute2-ss070313). The is still running, I just noticed a short 
> hickup, probably when it was busy writing the warning to the disk.
> 
> More details and .config: http://nerdbynature.de/bits/2.6.23-rc5/

seems unavailable at this time, please submit the whole lockdep report
if possible.

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