netdev - Re: iproute2 4.14.1 tc class add come to kernel-panic

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Message-ID: <CAM_iQpUh1jzN7otaavAr3jrEDk1KQzOwRhviwxuXhMUSLan-qQ@mail.gmail.com>
Date:   Tue, 30 Jan 2018 22:27:37 -0800
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     Roland Franke <fli4l@...nke-prem.de>
Cc:     Stephen Hemminger <stephen@...workplumber.org>,
        Eric Dumazet <eric.dumazet@...il.com>,
        Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: Re: iproute2 4.14.1 tc class add come to kernel-panic

On Tue, Jan 30, 2018 at 9:46 AM, Roland Franke <fli4l@...nke-prem.de> wrote:
> Hello,
>
>> Well, not min_qdisc things, but it should be resolved by:
>
>
>> commit efbf78973978b0d25af59bc26c8013a942af6e64
>> Author: Cong Wang <xiyou.wangcong@...il.com>
>> Date:   Mon Dec 4 10:48:18 2017 -0800
>
>
>>     net_sched: get rid of rcu_barrier() in tcf_block_put_ext()
>
>
> Against what kernel-version was this be made?
> patch from https://patchwork.ozlabs.org/patch/844372/
> will not fit against kernel 4.14.15
>

It is merged during 4.15 window, it was to address a performance
issue, I don't realize it fixes any bug until you report this.

If you need, we can ask DaveM to queue it for stable, but it may
need some other commit too.

Thanks.