Bug 72866

Summary: ALTQ code and queues seem to trigger crashes in FBSD 5.3-RC1
Product: Base System Reporter: O. Hartmann <hartmann>
Component: kernAssignee: freebsd-pf (Nobody) <pf>
Status: Closed FIXED    
Severity: Affects Only Me    
Priority: Normal    
Version: Unspecified   
Hardware: Any   
OS: Any   

Description O. Hartmann 2004-10-19 09:40:31 UTC 
	Applying queues to network connections with /etc/pf.conf via 'altq' pushes the
	likelyhood of crashes enormously! I recognized this on fxp0 and em0. Disabling
	bandwith limiting in pf-config leaves the system more stable.

Fix: 

Disable queues in pf.conf.
How-To-Repeat: 	Configure pf and ALTQ, use queues in /etc/pf.conf (maybe SMP should also be
	used, but SMP triggers the problem more quickly).
Comment 1 Mark Linimon freebsd_committer freebsd_triage 2004-11-29 08:51:41 UTC 
State Changed
From-To: open->feedback

Is this the same machine as in kern/74156?  If so, does this particular 
problem still recur with the problematic video card removed?
Comment 2 Robert Watson freebsd_committer freebsd_triage 2005-01-03 18:45:47 UTC 
Responsible Changed
From-To: freebsd-bugs->mlaier

Chown to Max Laier.
Comment 3 Max Laier 2005-01-04 00:50:26 UTC 
In order to debug this, I need more information:

1) What kind of "crash" is this? panic, deadlock or something else? If it is a 
panic, do you have a chance to get a crashdump or at least a traceback?

2) I need your *complete* pf.conf (in private mail if you prefer). Please send 
both versions.

3) Does setting debug.mpsafenet=0 in loader.conf change the situation?

-- 
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Comment 4 mlaier freebsd_committer freebsd_triage 2005-02-18 16:18:58 UTC 
Responsible Changed
From-To: mlaier->pf

No feedback from original reporter in a while.  Over to freebsd-pf ML to 
see if somebody else has seen similar problems and can fill in details. 

Thanks.
Comment 5 mlaier freebsd_committer freebsd_triage 2005-02-18 17:40:29 UTC 
State Changed
From-To: feedback->closed

Original author confirmed that the problem was due to bad hardware.  Thanks.