From owner-freebsd-bugs  Thu Jul 22  2:13: 0 1999
Delivered-To: freebsd-bugs@freebsd.org
Received: from freefall.freebsd.org (freefall.FreeBSD.ORG [204.216.27.21])
	by hub.freebsd.org (Postfix) with ESMTP id 9466314D7A
	for <freebsd-bugs@FreeBSD.org>; Thu, 22 Jul 1999 02:12:57 -0700 (PDT)
	(envelope-from gnats@FreeBSD.org)
Received: (from gnats@localhost)
	by freefall.freebsd.org (8.9.3/8.9.2) id CAA89253;
	Thu, 22 Jul 1999 02:10:01 -0700 (PDT)
	(envelope-from gnats@FreeBSD.org)
Received: from gw-nl3.philips.com (gw-nl3.philips.com [192.68.44.35])
	by hub.freebsd.org (Postfix) with ESMTP id 8E61814CF1
	for <FreeBSD-gnats-submit@freebsd.org>; Thu, 22 Jul 1999 02:00:10 -0700 (PDT)
	(envelope-from Jos.Backus@nl.origin-it.com)
Received: from smtprelay-nl1.philips.com (localhost.philips.com [127.0.0.1])
          by gw-nl3.philips.com with ESMTP id KAA16566
          for <FreeBSD-gnats-submit@freebsd.org>; Thu, 22 Jul 1999 10:59:01 +0200 (MEST)
          (envelope-from Jos.Backus@nl.origin-it.com)
Received: from smtprelay-eur1.philips.com(130.139.36.3) by gw-nl3.philips.com via mwrap (4.0a)
	id xma016564; Thu, 22 Jul 99 10:59:01 +0200
Received: from hal.mpn.cp.philips.com (hal.mpn.cp.philips.com [130.139.64.195]) 
	by smtprelay-nl1.philips.com (8.9.3/8.8.5-1.2.2m-19990317) with SMTP id KAA00497
	for <FreeBSD-gnats-submit@freebsd.org>; Thu, 22 Jul 1999 10:59:00 +0200 (MET DST)
Received: (qmail 751 invoked by uid 666); 22 Jul 1999 08:59:22 -0000
Message-Id: <19990722085922.750.qmail@hal.mpn.cp.philips.com>
Date: 22 Jul 1999 08:59:22 -0000
From: Jos Backus <Jos.Backus@nl.origin-it.com>
Reply-To: Jos Backus <Jos.Backus@nl.origin-it.com>
To: FreeBSD-gnats-submit@freebsd.org
X-Send-Pr-Version: 3.2
Subject: kern/12758: idprio-related panic in -stable and -current
Sender: owner-freebsd-bugs@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.org


>Number:         12758
>Category:       kern
>Synopsis:       Adjusting the idle priority of a process causes panic
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Jul 22 02:10:01 PDT 1999
>Closed-Date:
>Last-Modified:
>Originator:     Jos Backus
>Release:        FreeBSD 4.0-CURRENT i386
>Organization:
Origin B.V.
>Environment:

	-current as of today, -stable as of 19 July 1999

>Description:

	See below.

>How-To-Repeat:

	% primes 3 > /dev/null &
	[1] 306
	% primes 3 > /dev/null &
	[2] 307
	% su
	# idprio 31 -306
	# idprio -t -306
	# panic: remrq
	Debugger("panic") at ...
	db> trace
	Debugger(c01dba5b) at Debugger+0x38
	panic(c01c21fe,c012e00b2,c832a8c0,0,c012dfa4) at panic+0x74
	rem1(0,40000000,280ef774,bfbfd940,a) at rem1
	softclock(0,2f,2f,2f,a) at softclock+0xde
	doreti_swi() at doreti_swi+0xf

	Apparently this only happens when the CPU load is above normal, hence
	two instances of the primes program had to be started.

>Fix:
	
	No idea.


>Release-Note:
>Audit-Trail:
>Unformatted:


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-bugs" in the body of the message