Bug 20639

 > From wpaul@FreeBSD.ORG  Tue Aug 15 20:07:26 2000
 > Subject: Re: arpintr
 > Cc: freebsd-gnats-submit@FreeBSD.ORG, jblaine@linus.mitre.org,
 >         sheldonh@uunet.co.za
 > From: wpaul@FreeBSD.ORG (Bill Paul)
 >
 > > 
 > > Hi.
 > > 
 > > I've moved to 4.1-RELEASE 3 days ago. Since that, machine did not rebooted,
 > > but it did hang up 2 times (and these 2 times were in 3 minutes one after
 > > another). Looked like very high LA. I had not reniced shell or top handy,
 > > so may be it was some userland tool ( I have some on machine ), but I didn't
 > > seen that since I've installed machine, and my last change in software was
 > > 2 weeks ago.
 > > 
 > > I'm afraid that this bug has turned from easy-trackable page fault panic
 > > to hangup after I've moved to 4.1. What can I do to provide you with
 > > stacktrace under these circumstances?
 >
 > You are making the unwarranted assumption that the problem you're seeing
 > now is related to the problem you were seeing before. Your reasoning is:
 > "Well, something is still wrong, therefore it must be caused by the same
 > thing as the previous problem." This reasoning is faulty. It is not the
 > same bug.
 
 May be it is not, of course.
 
 > If you want to try to debug this, compile your kernel with options DDB
 > and try to break into the kernel debugger next time it wedges.
 
 May I ask you what should I check? In fact, I'll have a very limited time
 for online debugging.
 Is it possible do dump all necessary data, reboot machine, and debug
 later? A sort of make panic so I'll have core?
 
 \bye
 Stas