From owner-freebsd-current@FreeBSD.ORG  Wed Jun 22 11:45:43 2005
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
X-Original-To: current@freebsd.org
Delivered-To: freebsd-current@FreeBSD.ORG
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 69E2B16A41C
	for <current@freebsd.org>; Wed, 22 Jun 2005 11:45:43 +0000 (GMT)
	(envelope-from avatar@mmlab.cse.yzu.edu.tw)
Received: from www.mmlab.cse.yzu.edu.tw (www.mmlab.cse.yzu.edu.tw
	[140.138.150.166])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 30CF443D53
	for <current@freebsd.org>; Wed, 22 Jun 2005 11:45:43 +0000 (GMT)
	(envelope-from avatar@mmlab.cse.yzu.edu.tw)
Received: by www.mmlab.cse.yzu.edu.tw (qmail, from userid 1000)
	id 471135078F2; Wed, 22 Jun 2005 19:45:42 +0800 (CST)
Received: from localhost (localhost [127.0.0.1])
	by www.mmlab.cse.yzu.edu.tw (qmail) with ESMTP id 419D95078D1;
	Wed, 22 Jun 2005 19:45:42 +0800 (CST)
Date: Wed, 22 Jun 2005 19:45:42 +0800 (CST)
From: Tai-hwa Liang <avatar@mmlab.cse.yzu.edu.tw>
To: Khetan Gajjar <khetan@os.org.za>
In-Reply-To: <20050621174902.G1593@bastion.os.org.za>
Message-ID: <05062219434218.29380@www.mmlab.cse.yzu.edu.tw>
References: <20050621174902.G1593@bastion.os.org.za>
MIME-Version: 1.0
Content-Type: MULTIPART/MIXED; BOUNDARY="0-1235423882-1119440742=:29380"
Cc: current@freebsd.org
Subject: Re: Panic potentially related to imgacct_shell.c commit
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 22 Jun 2005 11:45:43 -0000

  This message is in MIME format.  The first part should be readable text,
  while the remaining parts are likely unreadable without MIME-aware tools.

--0-1235423882-1119440742=:29380
Content-Type: TEXT/PLAIN; charset=big5; format=flowed
Content-Transfer-Encoding: 8BIT

On Tue, 21 Jun 2005, Khetan Gajjar wrote:
[...]
> (kgdb) backtrace
> 165             __asm __volatile("movl %%fs:0,%0" : "=r" (td));
> #0  doadump () at pcpu.h:165
> #1  0xc04f9568 in boot (howto=260) at ../../../kern/kern_shutdown.c:397
> #2  0xc04f987d in panic (fmt=0xc069d6ac "cur != NULL")
>    at ../../../kern/kern_shutdown.c:553
> #3  0xc0593a4c in tcp_sack_option (tp=0xc23c0730, th=0xd4400aac,
>    cp=0xc242da66 "\005\022\002Nu\020\002Nz\223\002N\200\026\002N¬.\223¦T\222!¸Ï+zYã¬+<Û\031\016Öñêî1£\006\177~\017A·\221æºu\227$Ñ9Tõ\232ÿ\003\024\234îÅs¦a\206¨e\236ôLZÔï\r] imapd[8272]: login: dustpuppy.is.co.za[19", optlen=0)
>    at ../../../netinet/tcp_sack.c:478
> #4  0xc0591a3b in tcp_dooptions (tp=0xc23c0730, to=0xd4400bb4,
>    cp=0xc242da66 "\005\022\002Nu\020\002Nz\223\002N\200\026\002N¬.\223¦T\222!¸Ï+zYã¬+<Û\031\016Öñêî1£\006\177~\017A·\221æºu\227$Ñ9Tõ\232ÿ\003\024\234îÅs¦a\206¨e\236ôLZÔï\r] imapd[8272]: login: dustpuppy.is.co.za[19", cnt=18, is_syn=0,
>    th=0xc242da44) at ../../../netinet/tcp_input.c:2647

Try "sysctl net.inet.tcp.sack.enable=0" to see if that helps.
--0-1235423882-1119440742=:29380--