From owner-freebsd-bugs@FreeBSD.ORG Wed Sep 3 21:11:27 2008 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C44FC106567A; Wed, 3 Sep 2008 21:11:27 +0000 (UTC) (envelope-from gavin@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id B57098FC13; Wed, 3 Sep 2008 21:11:27 +0000 (UTC) (envelope-from gavin@FreeBSD.org) Received: from freefall.freebsd.org (gavin@localhost [127.0.0.1]) by freefall.freebsd.org (8.14.2/8.14.2) with ESMTP id m83LBRCC052673; Wed, 3 Sep 2008 21:11:27 GMT (envelope-from gavin@freefall.freebsd.org) Received: (from gavin@localhost) by freefall.freebsd.org (8.14.2/8.14.1/Submit) id m83LBRGr052668; Wed, 3 Sep 2008 21:11:27 GMT (envelope-from gavin) Date: Wed, 3 Sep 2008 21:11:27 GMT Message-Id: <200809032111.m83LBRGr052668@freefall.freebsd.org> To: i.angelov@developers.bg, gavin@FreeBSD.org, freebsd-bugs@FreeBSD.org, gavin@FreeBSD.org From: gavin@FreeBSD.org Cc: Subject: Re: kern/126997: [panic] Kernel panic X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Sep 2008 21:11:27 -0000 Synopsis: [panic] Kernel panic State-Changed-From-To: open->feedback State-Changed-By: gavin State-Changed-When: Wed Sep 3 20:59:12 UTC 2008 State-Changed-Why: To submitter: Sadly, because you have recompiled your kernel, the core dumps are very hard to analyse anywhere but on your own system. However, it's not hard for you to get the basic information we will need: - Make sure you have the same sources in /usr/src as the kernel was compiled with (recompile if necessary) - Make sure the kernel was compiled with "makeoptions DEBUG=-g" in the kernel config file (I believe it's default) - Make sure you are running with the above kernel, and wait for a panic - On the core dump produced, run: kgdb /usr/obj/usr/src/sys/GENERIC/kernel.debug /var/crash/vmcore.X (replacing GENERIC with the name of your kernel, and vmcore.X with the most recent core dump) - When in kgdb, run "bt", and reply-all to this email with the backtrrace Finally: FreeBSD PRs are public, and kernel core dumps may well contain sensitive information such as passwords etc, as they are a full dump of the computer's memory at the time it crashed. Therefore it's probably a good idea for you to remove the core files you've made accessible. If a FreeBSD developer needs them, you can share them privately. Responsible-Changed-From-To: freebsd-bugs->gavin Responsible-Changed-By: gavin Responsible-Changed-When: Wed Sep 3 20:59:12 UTC 2008 Responsible-Changed-Why: Track http://www.freebsd.org/cgi/query-pr.cgi?pr=126997