Re: port-amd64/55661: pppoe renegotiation timeout causing pani

[s ymgch <s.ymgch228%gmail.com@localhost>]

Hi,

I committed some fixes around pppoe(4). And these may have fixed the panic.
Can you check?

-- yamaguchi

On Thu, Sep 24, 2020 at 12:00 PM Roy Marples <roy%marples.name@localhost> wrote:
>
> The following reply was made to PR port-amd64/55661; it has been noted by GNATS.
>
> From: Roy Marples <roy%marples.name@localhost>
> To: gnats-bugs%NetBSD.org@localhost
> Cc:
> Subject: Re: port-amd64/55661: pppoe renegotiation timeout causing pani
> Date: Thu, 24 Sep 2020 03:56:03 +0100
>
>  I can reliably reproduce this on NetBSD-9.99.73 without an ISP.
>
>  I have setup a pppoe(4) interface with LINK0 and enabled PPPOE server in the kernel.
>  I have a VM that in turn is a pppoe client for the above.
>  Upon shutting down the VM, the NetBSD host panics.
>
>  Slightly blurred backtrace here:
>  https://photos.app.goo.gl/6KRiUe3ifdhRDgy19
>
>  Riastradh | sppp_keepalive needs to defer if_down to workqueue
>  Riastradh | not fully fixed, please reopen and share stack trace with yamaguchi-san
>
>  Roy
>