From owner-freebsd-current@FreeBSD.ORG Fri May 14 06:44:10 2010 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id EEE501065672; Fri, 14 May 2010 06:44:10 +0000 (UTC) (envelope-from kaduk@mit.edu) Received: from dmz-mailsec-scanner-7.mit.edu (DMZ-MAILSEC-SCANNER-7.MIT.EDU [18.7.68.36]) by mx1.freebsd.org (Postfix) with ESMTP id 7F8A58FC29; Fri, 14 May 2010 06:44:10 +0000 (UTC) X-AuditID: 12074424-b7b9dae000002832-fb-4becf1399b32 Received: from mailhub-auth-2.mit.edu (MAILHUB-AUTH-2.MIT.EDU [18.7.62.36]) by dmz-mailsec-scanner-7.mit.edu (Symantec Brightmail Gateway) with SMTP id 1E.5A.10290.931FCEB4; Fri, 14 May 2010 02:44:09 -0400 (EDT) Received: from outgoing.mit.edu (OUTGOING-AUTH.MIT.EDU [18.7.22.103]) by mailhub-auth-2.mit.edu (8.13.8/8.9.2) with ESMTP id o4E6i9KO029750; Fri, 14 May 2010 02:44:09 -0400 Received: from multics.mit.edu (MULTICS.MIT.EDU [18.187.1.73]) (authenticated bits=56) (User authenticated as kaduk@ATHENA.MIT.EDU) by outgoing.mit.edu (8.13.6/8.12.4) with ESMTP id o4E6i7j6008998 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Fri, 14 May 2010 02:44:08 -0400 (EDT) Received: (from kaduk@localhost) by multics.mit.edu (8.12.9.20060308) id o4E6i7Rk004052; Fri, 14 May 2010 02:44:07 -0400 (EDT) Date: Fri, 14 May 2010 02:44:07 -0400 (EDT) From: Benjamin Kaduk To: Kostik Belousov In-Reply-To: <20100514053907.GL83316@deviant.kiev.zoral.com.ua> Message-ID: References: <20100514053907.GL83316@deviant.kiev.zoral.com.ua> User-Agent: Alpine 1.10 (GSO 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Brightmail-Tracker: AAAAAA== Cc: alc@freebsd.org, attilio@freebsd.org, freebsd-current@freebsd.org Subject: Re: kgdb unuseable with cores on current (for some people) 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: Fri, 14 May 2010 06:44:11 -0000 On Fri, 14 May 2010, Kostik Belousov wrote: > On Fri, May 14, 2010 at 12:55:35AM -0400, Benjamin Kaduk wrote: >> Hi all, >> >> As was revealed in a recent thread here [1], several people have been >> unable to use kgdb on coredumps for the past few months (but possibly not >> everyone). >> >> I am one of those affected, and have narrowed the breakage with a binary >> search to between SVN revisions 202883 and 202954 (that is, Jan 23 1200h >> and Jan 25 0000h). Looking at the changes, alc's revision 202897 and >> attilio's revision 202933 look to be the most plausible culprits in terms >> of what they touched. I will continue with my bisection, but with only 36 >> revisions in play, it is probably worth looking for the bug in parallel >> with the bisection. > > Try reverting r202897 on fresh HEAD. I very much doubt that r202933 > can be responsible. > Indeed, 202933 was cleared of blame in the latest bisection. I'm currently pulling up to HEAD and will try reverting 202897. -Ben