From owner-freebsd-hackers@FreeBSD.ORG Thu Nov 6 23:29:12 2003 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4D42616A4CE; Thu, 6 Nov 2003 23:29:12 -0800 (PST) Received: from firecrest.mail.pas.earthlink.net (firecrest.mail.pas.earthlink.net [207.217.121.247]) by mx1.FreeBSD.org (Postfix) with ESMTP id 64C2343FE3; Thu, 6 Nov 2003 23:29:11 -0800 (PST) (envelope-from tlambert2@mindspring.com) Received: from user-2ivfi0e.dialup.mindspring.com ([165.247.200.14] helo=mindspring.com) by firecrest.mail.pas.earthlink.net with asmtp (SSLv3:RC4-MD5:128) (Exim 3.33 #1) id 1AI13J-0005Lm-00; Thu, 06 Nov 2003 23:29:06 -0800 Message-ID: <3FAB49CF.931D1C48@mindspring.com> Date: Thu, 06 Nov 2003 23:29:19 -0800 From: Terry Lambert X-Mailer: Mozilla 4.79 [en] (Win98; U) X-Accept-Language: en MIME-Version: 1.0 To: Mike Silbersack References: <3F9F9884.3020309@noviforum.si> <20031030050540.GA25906@rot13.obsecurity.org> <20031106005009.D1561@odysseus.silby.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-ELNK-Trace: b1a02af9316fbb217a47c185c03b154d40683398e744b8a46dca913c26aa10fdf732af28134a5bff666fa475841a1c7a350badd9bab72f9c350badd9bab72f9c cc: "Branko F. Grac\(nar" cc: freebsd-hackers@freebsd.org cc: freebsd-current@freebsd.org cc: "Giovanni P. Tirloni" Subject: Re: FreeBSD 5.1-p10 reproducible crash with Apache2 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 07 Nov 2003 07:29:12 -0000 Mike Silbersack wrote: > On Wed, 5 Nov 2003, [ISO-8859-1] "Branko F. Grac(nar" wrote: > > I tried today with yesterday's -CURRENT. Same symptoms. No kernel panic, > > just lockup. > > Ok, submit a PR with clear details on how to recreate the problem, and > we'll see if someone can take a look into it. I'm too busy to look at it, > but at least putting it in a PR will ensure that it doesn't get too lost. > Once the PR is filed, you might want to try asking on the freebsd-threads > list; it sounds like the issue might be thread-related. > > (Note that your original e-mail might contain enough detail, I'm not > certain; I just skimmed it. Filing a good PR is important either way, > mailing list messages get easily lost.) Is gdb good enough in FreeBSD that you can break to the kernel debugger with GDB enabled, and dump out the stacks for all threads currently in the kernel for all processes? The way to find this, if it's a threads related issue, is to do exactly that, and then look to se if there's something like a close in one thread of an fd being used in a blocking operation in another thread. -- Terry