altq on ng0 sometimes causing system panic

Volker volker at vwsoft.com
Sun Sep 10 17:32:26 PDT 2006


Hi folks,

two or three weeks ago I've switched from userland ppp to mpd for my
internet connection. While using ng0 as the public interface I'm
also using altq (cbq) for bw management.

Everything works (haven't yet measured for queue effectiveness) but
when issuing a `pfctl -gf mypf.conf' sometimes the system will
panic. I need to reload my ruleset as soon as the internet
connection has been set up because I've been lazy and am not using
anchors so I'm just reloading my complete ruleset by a link-up
script. I've been able to panic the machine just by reloading the
ruleset manually several times in a row.

As I currently don't have a serial console setup I'm unable to post
any dumps or panic messages. Has anyone else experienced that? I've
had queue statements in my pf rules before (even while using ppp and
knowing about the problems with altq and tun) I've never experienced
any panics. This is really just since changing from a tun to an ng
device.

If no one else has experienced panics like this I'll go and hook up
the serial console and try to get a panic again. Current workaround
is not to use altq on ng0 so I don't get panics ATM.

Running RELENG_6, almost recently csup'ed.

Greetings,

Volker


More information about the freebsd-pf mailing list