netdev - Re: ppp/pppoe, still panic 4.15.3 in ppp

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Message-ID: <b702287ee6010632632e63605f24c4d0@nuclearcat.com>
Date:   Fri, 23 Feb 2018 11:41:43 +0200
From:   Denys Fedoryshchenko <nuclearcat@...learcat.com>
To:     Guillaume Nault <g.nault@...halink.fr>
Cc:     Cong Wang <xiyou.wangcong@...il.com>,
        Linux Kernel Network Developers <netdev@...r.kernel.org>,
        netdev-owner@...r.kernel.org
Subject: Re: ppp/pppoe, still panic 4.15.3 in ppp_push

On 2018-02-23 11:38, Guillaume Nault wrote:
> On Thu, Feb 22, 2018 at 08:51:19PM +0200, Denys Fedoryshchenko wrote:
>> I'm using accel-ppp that has unit-cache option, i guess for "reusing" 
>> ppp
>> interfaces (because creating a lot of interfaces on BRAS with 8k users 
>> quite
>> expensive).
>> Maybe it is somehow related and can be that scenario causing this bug?
>> 
> Indeed, it'd be interesting to know if unit-cache is part of the
> equation (if it's workable for you to disable it).
Already did that and testing, unfortunately i had to disable KASAN and 
full refcount, as performance hit is too heavy for me. I will try to 
enable KASAN alone tomorrow.