Problems with 6.2-PRE and udp applications - dhcpd and named
rwatson at FreeBSD.org
Fri Oct 13 17:45:50 PDT 2006
On Fri, 13 Oct 2006, Jonathan Feally wrote:
> I have a P4 2.8 box running on an intel MB with a em0 acting as a firewall.
> The em0 has multiple tagged vlans on it, no ip assigned to main interface.
> Almost clockwork now, 6-7 days after bootup named or dhcpd completly locks
> up. I can't even kill -9 the apps. I have recompiled both apps since
> upgrading. I have only made two changes to this system around the same time.
> 1. Removed 2nd em nic that had only 1 network connected not vlan tagged. 2.
> Upgraded to 6.2-PRE
> Has anyone else had these problems? I am going to try running the system
> with the internet connection not tagged to see if that helps.
I've not seen this on any boxes. The usual debugging path here is to:
(1) Look at the process wait channel in ps axl.
(2) Compile KDB/DDB into the kernel, and do a kernel stack trace of the
Once you know what the kernel thread associated with the process is doing, we
can attempt to figure out why it's doing it.
Robert N M Watson
University of Cambridge
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