netdev - Re: iproute2: tc deletion freezes whole server

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Message-ID: <CAM_iQpV0g+yUjrzPdzsm=4t7+ZBt8Y=RTwYJdn9RUqFb1aCE1A@mail.gmail.com>
Date:   Thu, 26 Mar 2020 10:07:21 -0700
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     Václav Zindulka <vaclav.zindulka@...pnet.cz>
Cc:     Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: Re: iproute2: tc deletion freezes whole server

On Thu, Mar 26, 2020 at 7:24 AM Václav Zindulka
<vaclav.zindulka@...pnet.cz> wrote:
>
> > On Wed, Mar 25, 2020 at 6:43 PM Cong Wang <xiyou.wangcong@...il.com> wrote:
> > > Are you able to test an experimental patch attached in this email?
> >
> > Sure. I'll compile new kernel tomorrow. Thank you for quick patch.
> > I'll let you know as soon as I have anything.
>
> I've compiled kernel with the patch you provided and tested it.
> However the problem is not solved. It behaves exactly the same way.
> I'm trying to put some printk into the fq_codel_reset() to test it
> more.

Are the stack traces captured by perf any different with unpatched?

Thanks.