From owner-freebsd-alpha@FreeBSD.ORG Mon Nov 15 18:55:16 2004 Return-Path: Delivered-To: freebsd-alpha@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id BB97316A4CE; Mon, 15 Nov 2004 18:55:16 +0000 (GMT) Received: from tigra.ip.net.ua (tigra.ip.net.ua [82.193.96.10]) by mx1.FreeBSD.org (Postfix) with ESMTP id DCBB143D31; Mon, 15 Nov 2004 18:55:15 +0000 (GMT) (envelope-from ru@ip.net.ua) Received: from localhost (rocky.ip.net.ua [82.193.96.2]) by tigra.ip.net.ua (8.12.11/8.12.11) with ESMTP id iAFItEZF035039; Mon, 15 Nov 2004 20:55:14 +0200 (EET) (envelope-from ru@ip.net.ua) Received: from tigra.ip.net.ua ([82.193.96.10]) by localhost (rocky.ipnet [82.193.96.2]) (amavisd-new, port 10024) with LMTP id 31427-19; Mon, 15 Nov 2004 20:55:14 +0200 (EET) Received: from heffalump.ip.net.ua (heffalump.ip.net.ua [82.193.96.213]) by tigra.ip.net.ua (8.12.11/8.12.11) with ESMTP id iAFItCvR034935 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 15 Nov 2004 20:55:14 +0200 (EET) (envelope-from ru@ip.net.ua) Received: (from ru@localhost) by heffalump.ip.net.ua (8.13.1/8.13.1) id iAFItEOf070702; Mon, 15 Nov 2004 20:55:14 +0200 (EET) (envelope-from ru) Date: Mon, 15 Nov 2004 20:55:14 +0200 From: Ruslan Ermilov To: John Baldwin Message-ID: <20041115185514.GA65300@ip.net.ua> References: <20041115081659.GA30262@ip.net.ua> <200411151112.49535.jhb@FreeBSD.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="qDbXVdCdHGoSgWSk" Content-Disposition: inline In-Reply-To: <200411151112.49535.jhb@FreeBSD.org> User-Agent: Mutt/1.5.6i X-Virus-Scanned: by amavisd-new at ip.net.ua cc: alpha@freebsd.org Subject: Re: Removing VGA card panics the box on boot X-BeenThere: freebsd-alpha@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Porting FreeBSD to the Alpha List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 15 Nov 2004 18:55:16 -0000 --qDbXVdCdHGoSgWSk Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Nov 15, 2004 at 11:12:49AM -0500, John Baldwin wrote: > On Monday 15 November 2004 03:16 am, Ruslan Ermilov wrote: > > Hi there, > > > > I needed the unused PCI VGA card for testing another machine, > > so I pulled it out from my AlphaPC 164SX, and that gave me an > > > > instant panic on boot: > > : Timecounter "i8254" frequency 1193182 Hz quality 0 > > : Timecounter "alpha" frequency 533183689 Hz quality 800 > > : Timecounters tick every 0.976 msec > > : panic: mtx_lock() of spin mutex (null) @ /usr/src/sys/netinet/igmp.c:= 431 > > : cpuid =3D 0 > > : KDB: enter: panic > > : [thread 100004] > > : Stopped at kdb_enter+0x48: or zero,zero,zero > > : db> > > > > Putting it back in results in normal behavior (no panic). > > Any hints? >=20 > Sounds like something is messing with free'd memory through a stale point= er=20 > and happens to be trashing that spin mutex as a result. Not sure on how = to=20 > track it down however. >=20 The funny thing is that it happens in exactly this same place, and only when I pull the VGA card out. ;) Cheers, --=20 Ruslan Ermilov ru@FreeBSD.org FreeBSD committer --qDbXVdCdHGoSgWSk Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQFBmPuSqRfpzJluFF4RAnyMAJ9BepQfSMed1B5qCY8X2LP8Wf/s0QCfZxYi isNA+JEIl7Qvwhlu9JY0LGA= =69Dr -----END PGP SIGNATURE----- --qDbXVdCdHGoSgWSk--