From owner-freebsd-net@FreeBSD.ORG Tue Feb 1 14:53:10 2011 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E83E1106566B for ; Tue, 1 Feb 2011 14:53:10 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from cyrus.watson.org (cyrus.watson.org [65.122.17.42]) by mx1.freebsd.org (Postfix) with ESMTP id BA7198FC13 for ; Tue, 1 Feb 2011 14:53:10 +0000 (UTC) Received: from bigwig.baldwin.cx (66.111.2.69.static.nyinternet.net [66.111.2.69]) by cyrus.watson.org (Postfix) with ESMTPSA id 5D3A546B0D; Tue, 1 Feb 2011 09:53:10 -0500 (EST) Received: from jhbbsd.localnet (unknown [209.249.190.10]) by bigwig.baldwin.cx (Postfix) with ESMTPSA id 59FE08A01D; Tue, 1 Feb 2011 09:53:09 -0500 (EST) From: John Baldwin To: Eugene Grosbein Date: Tue, 1 Feb 2011 08:17:04 -0500 User-Agent: KMail/1.13.5 (FreeBSD/7.4-CBSD-20110107; KDE/4.4.5; amd64; ; ) References: <4D3011DB.9050900@frasunek.com> <201101311146.43119.jhb@freebsd.org> <4D479FE0.70809@rdtc.ru> In-Reply-To: <4D479FE0.70809@rdtc.ru> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201102010817.04927.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.6 (bigwig.baldwin.cx); Tue, 01 Feb 2011 09:53:09 -0500 (EST) X-Virus-Scanned: clamav-milter 0.96.3 at bigwig.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=0.5 required=4.2 tests=BAYES_00,MAY_BE_FORGED, RDNS_DYNAMIC autolearn=no version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on bigwig.baldwin.cx Cc: freebsd-net@freebsd.org Subject: Re: panic: bufwrite: buffer is not busy??? X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Feb 2011 14:53:11 -0000 On Tuesday, February 01, 2011 12:53:36 am Eugene Grosbein wrote: > On 31.01.2011 22:46, John Baldwin wrote: > > >># gdb kernel > >> GNU gdb 6.1.1 [FreeBSD] > >> Copyright 2004 Free Software Foundation, Inc. > >> GDB is free software, covered by the GNU General Public License, and you are > >> welcome to change it and/or distribute copies of it under certain > > conditions. > >> Type "show copying" to see the conditions. > >> There is absolutely no warranty for GDB. Type "show warranty" for details. > >> This GDB was configured as "amd64-marcel-freebsd"... > >> (gdb) l *0xffffffff803c1315 > >> 0xffffffff803c1315 is in ng_address_hook > > (/home/src/sys/netgraph/ng_base.c:3504). > >> 3499 * Quick sanity check.. > >> 3500 * Since a hook holds a reference on it's node, once we know > >> 3501 * that the peer is still connected (even if invalid,) we > > know > >> 3502 * that the peer node is present, though maybe invalid. > >> 3503 */ > >> 3504 if ((hook == NULL) || > >> 3505 NG_HOOK_NOT_VALID(hook) || > >> 3506 NG_HOOK_NOT_VALID(peer = NG_HOOK_PEER(hook)) || > >> 3507 NG_NODE_NOT_VALID(peernode = NG_PEER_NODE(hook))) { > >> 3508 NG_FREE_ITEM(item); > > > > Hmmm. I think you might have a hardware problem. Notice the fault address, > > it is 0x200000030. Can you do 'x/i '? > > (gdb) x/i 0xffffffff803c1315 > 0xffffffff803c1315 : testb $0x1,0x28(%rdx) Hmm, offset is 0x28, so the original pointer would have been 0x200000008, which has two bits set. That is a bit more of a stretch. -- John Baldwin