From owner-freebsd-current@FreeBSD.ORG Tue May 11 04:05:27 2004 Return-Path: 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 AA75816A4CF for ; Tue, 11 May 2004 04:05:27 -0700 (PDT) Received: from tx2.oucs.ox.ac.uk (tx2.oucs.ox.ac.uk [163.1.2.163]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4041D43D2F for ; Tue, 11 May 2004 04:05:27 -0700 (PDT) (envelope-from colin.percival@wadham.ox.ac.uk) Received: from scan2.oucs.ox.ac.uk ([163.1.2.162] helo=localhost) by tx2.oucs.ox.ac.uk with esmtp (Exim 4.24) id 1BNV4g-0007fs-K2 for freebsd-current@freebsd.org; Tue, 11 May 2004 12:05:26 +0100 Received: from rx2.oucs.ox.ac.uk ([163.1.2.161]) by localhost (scan2.oucs.ox.ac.uk [163.1.2.162]) (amavisd-new, port 25) with ESMTP id 29439-02 for ; Tue, 11 May 2004 12:05:26 +0100 (BST) Received: from gateway.wadham.ox.ac.uk ([163.1.161.253]) by rx2.oucs.ox.ac.uk with smtp (Exim 4.24) id 1BNV4g-0007fj-6Z for freebsd-current@freebsd.org; Tue, 11 May 2004 12:05:26 +0100 Received: (qmail 20235 invoked by uid 1004); 11 May 2004 11:05:25 -0000 Received: from colin.percival@wadham.ox.ac.uk by gateway by uid 71 with qmail-scanner-1.20 (clamscan: 0.67. sweep: 2.18/3.79. Clear:RC:1(163.1.161.131):. Processed in 0.044539 secs); 11 May 2004 11:05:25 -0000 Received: from dhcp1131.wadham.ox.ac.uk (HELO piii600.wadham.ox.ac.uk) (163.1.161.131) by gateway.wadham.ox.ac.uk with SMTP; 11 May 2004 11:05:25 -0000 Message-Id: <6.1.0.6.1.20040511120109.03f42eb8@popserver.sfu.ca> X-Sender: cperciva@popserver.sfu.ca (Unverified) X-Mailer: QUALCOMM Windows Eudora Version 6.1.0.6 Date: Tue, 11 May 2004 12:05:21 +0100 To: Michael Nottebrock From: Colin Percival In-Reply-To: <200405102141.53124.michaelnottebrock@gmx.net> References: <200405102141.53124.michaelnottebrock@gmx.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" cc: freebsd-current@freebsd.org Subject: Re: Panic on 5.2.1-R, netisr related? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 11 May 2004 11:05:27 -0000 Is this problem reproducible? I ask because... At 20:41 10/05/2004, Michael Nottebrock wrote: >#4 0xc0675715 in bremfree (bp=0x0) at ../../../kern/vfs_bio.c:629 ^^^^^^ >#5 0xc06791c4 in getblk (vp=0xc312ab2c, blkno=1, size=16384, slpflag=0, >slptimeo=0, flags=0) > at ../../../kern/vfs_bio.c:2468 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ... this should never happen. getblk dereferences bp during the four lines immediately before it calls bremfree(bp), so if bp is null, you should have seen a panic before getting this far. Colin Percival