Re: port-evbarm/55504: evbarm-earmv7hf testbed hangs during sbin/ifconfig/t_repeated_updown test

[Andreas Gustafsson <gson%gson.org@localhost>]

The following reply was made to PR port-evbarm/55504; it has been noted by GNATS.

From: Andreas Gustafsson <gson%gson.org@localhost>
To: Martin Husemann <martin%duskware.de@localhost>
Cc: gnats-bugs%netbsd.org@localhost,
    Jukka Ruohonen <jruohonen%iki.fi@localhost>
Subject: Re: port-evbarm/55504: evbarm-earmv7hf testbed hangs during sbin/ifconfig/t_repeated_updown test
Date: Fri, 24 Jul 2020 12:54:31 +0300

 Martin Husemann wrote:
 > This sound like a generic driver bug (maybe since the media locking
 > changes or per cpu interface stats) - any chance you could manually
 > try this with a DIAGNOSTIC/DEBUG/LOCKDEBUG kernel?
 
 DIAGNOSTIC should be enabled already as it is enabled by default in
 -current (but I can't check using config -x because it appears to be
 broken).  I'll see what I can do about the others.
 
 > > Note that t_repeated_updown.sh 1.4 will no longer trigger the hang.
 > > Also, if the system is started with "anita --machine virt", it will
 > > have no shmh interface and therefore will not hang.
 > 
 > Is that because the interface is configured UP in your test setup or
 > does the test skip it eroneously?
 
 I believe it is configured UP due to dhcpcd being enabled by default
 on the evbarm-earmv7hf images.
 -- 
 Andreas Gustafsson, gson%gson.org@localhost