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Path: utzoo!mnetor!seismo!mcvax!unido!ifistg!norbert
From: norbert@ifistg.UUCP
Newsgroups: comp.bugs.4bsd
Subject: bug in ptrace - (nf)
Message-ID: <8800004@ifistg.UUCP>
Date: Thu, 23-Apr-87 07:41:00 EDT
Article-I.D.: ifistg.8800004
Posted: Thu Apr 23 07:41:00 1987
Date-Received: Sat, 2-May-87 02:15:42 EDT
Lines: 18
Nf-ID: #N:ifistg:8800004:000:527
Nf-From: ifistg!norbert    Apr 23 13:41:00 1987

Our system dies really often with 'panic: munhash' if we want to debug a
process with dbx or adb. We have a VAX 11-780 running 4.2bsd.
The stack trace from the post-mortem dump looks like this:

	...
	_panic(8003259e) from 8000b93a
	_munhash(907,fffb89e2) from 80019dd5
	_chgprot(91,20000000) from 80021097
	_procxmt() from	8000d2db
	_issig() from 8000a6f4
	...

I hope that this is a well-known bug and somebody can help us.

Thanks in advance,
				Norbert Jung
				University of Stuttgart
				...!seismo!unido!ifistg!norbert