From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Daniel Colascione Newsgroups: gmane.emacs.devel Subject: Re: [Emacs-diffs] trunk r116836: Avoid GC crashes. Date: Sun, 23 Mar 2014 12:53:30 -0700 Message-ID: <532F3BBA.4030802@dancol.org> References: <532CCE2F.1030406@dancol.org> <532CE5CE.8090607@dancol.org> <532CE93F.4010900@dancol.org> <87y50220rh.fsf@fencepost.gnu.org> <83ha6o3nm0.fsf@gnu.org> <532F2DE7.6050303@dancol.org> <83a9cg3f5q.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="PX9KH9nsaqaNdHkgvvne387ik30Ja5Fvt" X-Trace: ger.gmane.org 1395604413 23873 80.91.229.3 (23 Mar 2014 19:53:33 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 23 Mar 2014 19:53:33 +0000 (UTC) Cc: dak@gnu.org, schwab@linux-m68k.org, rms@gnu.org, emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sun Mar 23 20:53:43 2014 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1WRoSk-0000Dp-Fq for ged-emacs-devel@m.gmane.org; Sun, 23 Mar 2014 20:53:42 +0100 Original-Received: from localhost ([::1]:33237 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WRoSk-0001jD-2w for ged-emacs-devel@m.gmane.org; Sun, 23 Mar 2014 15:53:42 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:53850) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WRoSh-0001j7-5j for emacs-devel@gnu.org; Sun, 23 Mar 2014 15:53:40 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WRoSg-0005sP-4P for emacs-devel@gnu.org; Sun, 23 Mar 2014 15:53:39 -0400 Original-Received: from dancol.org ([2600:3c01::f03c:91ff:fedf:adf3]:46186) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WRoSb-0005qT-FF; Sun, 23 Mar 2014 15:53:33 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=dancol.org; s=x; h=Content-Type:In-Reply-To:References:Subject:CC:To:MIME-Version:From:Date:Message-ID; bh=9ttoy6WLriptsddpuuwghuodz2knpiXH+A7ick7+qL0=; b=c9RQXq1H07A0cUpEwrYKPIXR1Zwn/RsHwioZ0QSLnibotpPiFDDBrgDALdn5V5eVMkCNfoNEq4WBtYMwXrW0FGHrD2R3yX9H4yNJ3orjGvUK/rhnVxa5oXTvM/gOzeQ0ZTC3SKtJ1yhTnWy8mSlI7RyIjvNMLTvD7YyRgmvvSFewrq8HuMsG+IxU4l2ONmWKtSUdinskGL5oLJhmd1Q7r11vcsAyxAbJANeS4eB5JUr7S+VSDH53t5gg8vFKFBAFfwjj8UR8bKmuVO1RDGeVUBnxFgJdgxM1Zi/okCZ3neG+LdD8KwLISWU9Jn2NjtjV1Ha9ULluWAFIPL9bHq56AQ==; Original-Received: from [2601:8:b200:551::2b1] by dancol.org with esmtpsa (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1WRoSa-00045Z-Ah; Sun, 23 Mar 2014 12:53:32 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 In-Reply-To: <83a9cg3f5q.fsf@gnu.org> X-Enigmail-Version: 1.6 X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2600:3c01::f03c:91ff:fedf:adf3 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:170884 Archived-At: This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --PX9KH9nsaqaNdHkgvvne387ik30Ja5Fvt Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 03/23/2014 12:09 PM, Eli Zaretskii wrote: >> Date: Sun, 23 Mar 2014 11:54:31 -0700 >> From: Daniel Colascione >> CC: dak@gnu.org, rms@gnu.org, emacs-devel@gnu.org >> >>> There were several crashes in GC reported since October, at least som= e >>> of them might be related. In bug#16901, Dmitry mentioned some of >>> them, but there are more. >> >> I thought you found something wrong with gmalloc to explain that one. >=20 > Unfortunately, no. What I found was that the debugging code in > gmalloc had a bugthat would flag correct code as buggy. Once those > bugs were fixed, no memory-related problems were ever reported by > gmalloc. > Hrm. Something does seem very wrong then. Why does Richard's always seem to occur in the same place, though? The rest of these reports seem arbitrarily distributed. 17068 worries me too: either some logical is *very* subtly wrong, or there's a bug that scribbles over allocation metadata (but not other memory?) in such a way as to cause delayed GC failures. --PX9KH9nsaqaNdHkgvvne387ik30Ja5Fvt Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBAgAGBQJTLzu6AAoJEMAaIROpHW7I3vwP/1/H3fw3zXJaQZfWPPRoSmkI HpJfuma0Ya/jk47iam/y4Ary841yeztpiWRDv0mC2E4chFpjBrrZP+/IuuDwQkTc eNyG9Aa5umn++HkHI6KsIZrc7FxrNXCLWBmKsCEnegi7djueHsW1v++Hw8zUq95l S1osbmF8BHZXSL4AwdfmQjMSxuf3vlHeUW/+FdeZ0Q7yP+5T+V1HTeySS33giaYO T91jRBKIJrAKjnhP3lKL4FKYBn4zlzdHmMgW+UPTPTVe+rYjhl6KOtDekNIC/9sm dN80zLTYoVhNrinr4ReCIpL52l3C5NWzJAn+Wx6vLnWrid8uqHrsdWFgjRBxEvny rmBbXcTw/ZBYPXcf1d4tUStqLNzMlwU9q9gNANcqfC1GOnhp7NY969thg9mhkt9l nJoUZwDOITa3/ZL7izF/7beV8Jmjp69wqhlmgB1lSuePR/L4dTHVqMx1R/ZrZYyG jRd+3qY9LtEaOW3gjA7pchnnxyd8dPa4df5DUjgDJmiGR8jUj3GnAaw0reLoLYna gOqd5RaKpwbWujvj8KFMZ5uhWu+c4sA9kUzqog3yNMM38BWh9kE4LsYAIhEVhfqV PXqxZcvoGhChUcp1relBpIuQ5RD1AYII6GJ2bag3BemsPJZh9g8yx64H/PN0BjyH Ub0a8faf1rIgq8GKzFjQ =LcxN -----END PGP SIGNATURE----- --PX9KH9nsaqaNdHkgvvne387ik30Ja5Fvt--