From owner-freebsd-current@FreeBSD.ORG Thu May 24 16:30:08 2007 Return-Path: X-Original-To: Current@freebsd.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id F047416A469 for ; Thu, 24 May 2007 16:30:08 +0000 (UTC) (envelope-from asmrookie@gmail.com) Received: from wx-out-0506.google.com (wx-out-0506.google.com [66.249.82.228]) by mx1.freebsd.org (Postfix) with ESMTP id 98A1913C4BB for ; Thu, 24 May 2007 16:30:08 +0000 (UTC) (envelope-from asmrookie@gmail.com) Received: by wx-out-0506.google.com with SMTP id h28so340379wxd for ; Thu, 24 May 2007 09:30:08 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=k1cl3NqVN62uON6KTWcIk6+GmWRJxuvZ4rm8QVaH7podCde68W3gfxI8nGWme0XK/xldJAuCEQCthLg2uNUmjzRvEksRDKFzpQFaHcqFi0SAD91U3WlViyCGN9l98M9ecL5hVmEYmPR331id22FL2Y6zIEywrIA8gsVYq+6cxBA= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=e3wFMWh0E5XLhG2pZohcXKUZuScMZ/vfKLwoCCjp7T8ymsPwtY74qoNcNh2E/4aQ6A7OmbJsVrOTzyBZkuEimdNJMaMArcFpUiRiDjgbPlkkhSClSEg5L7TpxzMicZRcDlgOB+CeC2MyiaN+K8XXC1GQZNKrthkJ6aFLPG51chE= Received: by 10.78.181.13 with SMTP id d13mr592088huf.1180024207327; Thu, 24 May 2007 09:30:07 -0700 (PDT) Received: by 10.78.97.18 with HTTP; Thu, 24 May 2007 09:30:07 -0700 (PDT) Message-ID: <3bbf2fe10705240930o10f37febt9fb5f0a46bd193c3@mail.gmail.com> Date: Thu, 24 May 2007 18:30:07 +0200 From: "Attilio Rao" Sender: asmrookie@gmail.com To: "Joe Marcus Clarke" In-Reply-To: <1180022919.10757.24.camel@shumai.marcuscom.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <1179962663.75721.6.camel@shumai.marcuscom.com> <20070523165051.G9443@10.0.0.1> <4655D5C1.2010905@FreeBSD.org> <1180022919.10757.24.camel@shumai.marcuscom.com> X-Google-Sender-Auth: 33b170e86964c879 Cc: Jeff Roberson , Current@freebsd.org Subject: Re: Panic on -CURRENT after LDT changes X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 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: Thu, 24 May 2007 16:30:09 -0000 2007/5/24, Joe Marcus Clarke : > On Thu, 2007-05-24 at 20:13 +0200, Attilio Rao wrote: > > Jeff Roberson wrote: > > > Thanks, Attilio and I will look at this right away. > > > > > > Jeff > > > > > > On Wed, 23 May 2007, Joe Marcus Clarke wrote: > > > > > >> On a -CURRENT build today with Jeff's LDT locking changes, I get an > > >> instant, reproducible panic by doing: > > >> > > >> # cd /usr/src > > >> # make -DNO_CLEAN buildworld > > >> > > >> Backing out the LDT changes to /sys/i386/i386/*machdep* corrects the > > >> problem. Here is a dmesg and backtrace. In frame 6, it appears mdp is > > >> NULL (i.e. td->td_proc->p_md = 0x0). > > > > Did you enable WITNESS/INVARIANTS/INVARIANT_SUPPORT? > > No, this kernel does not have WITNESS or INVARIANTS. I can enable those > tomorrow if that would give you more useful information. It would be very appreciated, since I've been unable to reproduce your panic on a centrino dual core. Thanks, Attilio -- Peace can only be achieved by understanding - A. Einstein