linux-kernel - Re: kernel panic in 4.2.3, rb_erase in sch

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Message-ID: <1446477897.23275.6.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Mon, 02 Nov 2015 07:24:57 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Denys Fedoryshchenko <nuclearcat@...learcat.com>
Cc:	Jamal Hadi Salim <jhs@...atatu.com>,
	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: kernel panic in 4.2.3, rb_erase in sch_fq

On Mon, 2015-11-02 at 16:11 +0200, Denys Fedoryshchenko wrote:
> Hi!
> 
> Actually seems i was getting this panic for a while (once per week) on 
> loaded pppoe server, but just now was able to get full panic message.
> After checking commit logs on sch_fq.c i didnt seen any fixes, so 
> probably upgrading to newer kernel wont help?

I do not think we support sch_fq as a HTB leaf.

If you want both HTB and sch_fq, you need to setup a bonding device.

HTB on bond0

sch_fq on the slaves

Sure, the kernel should not crash, but HTB+sch_fq on same net device is
certainly not something that will work anyway.


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