netdev - Re: Fw: oops during unregister_netdevice interface enslaved to bond

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Message-ID: <1305032613.2614.26.camel@edumazet-laptop>
Date:	Tue, 10 May 2011 15:03:33 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Einar EL Lueck <ELELUECK@...ibm.com>
Cc:	davem@...emloft.net, netdev@...r.kernel.org,
	Frank Blaschka <Frank.Blaschka@...ibm.com>
Subject: Re: Fw: oops during unregister_netdevice interface enslaved to
 bond - regression

Le mardi 10 mai 2011 à 10:59 +0200, Eric Dumazet a écrit :
> Le mardi 10 mai 2011 à 10:54 +0200, Eric Dumazet a écrit :
> 
> > I am currently working on this stuff [adding even more batching and
> > probably bugs as well ], so instead of revert I'll try to find a way to
> > fix this.
> > 
> > If you already have a script to reproduce the bug on virtual devices on
> > x86 (not on s390 machines I dont have ;) ), I'll appreciate having a
> > copy of it.
> > 
> > Thanks for the reminder.
> 
> BTW make sure latest linux-2.6 still exhibits the problem, we fixed some
> things after original Octavian commit
> 
> List of commits :
> 
> commit ceaaec98ad99859ac90ac6863ad0a6cd075d8e0e
> net: deinit automatic LIST_HEAD
> 
> commit f87e6f47933e3ebeced9bb12615e830a72cedce4 
> net: dont leave active on stack LIST_HEAD 
> 
> 

OK I trigger the bug on linux-2.6 with :

modprobe bonding
ip link add testa type veth peer name testb
ifconfig bond0 up
ifenslave bond0 testa
ip link del testa

I'll cook a patch, stay tuned :)


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