Bug 50658

Summary: ipfw2 unalighed access causes kernel panic
Product: Base System Reporter: j.roeder <j.roeder>
Component: alphaAssignee: freebsd-alpha (Nobody) <alpha>
Status: Closed FIXED    
Severity: Affects Only Me    
Priority: Normal    
Version: 5.0-RELEASE   
Hardware: Any   
OS: Any   

Description j.roeder 2003-04-07 03:00:32 UTC 
Unfortunately the kernel doesn't write a message to /var/log/message when it panics and reboot is too quick to write every down by hand. Anyway, so when using "ipfw show" commanid it usually complains about "unalighned access". The output one can disable with the sysctl variable, as a posting in the news said and promised no further damage. This seems not to be right, as ocasionally the "ipfw show" command causes a kernel panic "kernel trap" due to "unalighend access of ipfw". This errow happens quite often when the "show" command is used. Chances about 1-30 in average.

Fix: 

no idea due to my limited skills
How-To-Repeat: 	install several had full dynnamic rules and use "ipfw show" several times until the kernel panics
Comment 1 ticso freebsd_committer freebsd_triage 2003-06-04 02:34:17 UTC 
State Changed
From-To: open->closed

A fix has been commited to -current. 
It very likely also make it into 5.1-RELEASE.