From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Andrea Corallo Newsgroups: gmane.emacs.bugs Subject: bug#41321: 27.0.91; Emacs aborts due to invalid pseudovector objects Date: Fri, 22 May 2020 12:55:18 +0000 Message-ID: References: <83zha8cgpi.fsf@gnu.org> <83r1vibmyj.fsf@gnu.org> <83imgublku.fsf@gnu.org> <831rncjuwf.fsf@gnu.org> <835zco44f0.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="94855"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux) Cc: 41321@debbugs.gnu.org, monnier@iro.umontreal.ca, pipcet@gmail.com To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri May 22 14:56:15 2020 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jc7Di-000OWn-Nd for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 22 May 2020 14:56:14 +0200 Original-Received: from localhost ([::1]:47178 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jc7Dh-0006sJ-PH for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 22 May 2020 08:56:13 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:45644) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jc7DW-0006qc-5L for bug-gnu-emacs@gnu.org; Fri, 22 May 2020 08:56:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:46852) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jc7DV-0000ci-RV for bug-gnu-emacs@gnu.org; Fri, 22 May 2020 08:56:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1jc7DV-0007LM-NC for bug-gnu-emacs@gnu.org; Fri, 22 May 2020 08:56:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Andrea Corallo Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 22 May 2020 12:56:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 41321 X-GNU-PR-Package: emacs Original-Received: via spool by 41321-submit@debbugs.gnu.org id=B41321.159015212528186 (code B ref 41321); Fri, 22 May 2020 12:56:01 +0000 Original-Received: (at 41321) by debbugs.gnu.org; 22 May 2020 12:55:25 +0000 Original-Received: from localhost ([127.0.0.1]:58398 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jc7Cv-0007KX-94 for submit@debbugs.gnu.org; Fri, 22 May 2020 08:55:25 -0400 Original-Received: from mx.sdf.org ([205.166.94.20]:64295) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jc7Cs-0007KK-BA for 41321@debbugs.gnu.org; Fri, 22 May 2020 08:55:24 -0400 Original-Received: from sdf.org (ma.sdf.org [205.166.94.33]) by mx.sdf.org (8.15.2/8.14.5) with ESMTPS id 04MCtIhl010140 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits) verified NO); Fri, 22 May 2020 12:55:19 GMT Original-Received: (from akrl@localhost) by sdf.org (8.15.2/8.12.8/Submit) id 04MCtIe1028316; Fri, 22 May 2020 12:55:18 GMT In-Reply-To: <835zco44f0.fsf@gnu.org> (Eli Zaretskii's message of "Fri, 22 May 2020 14:04:03 +0300") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:180764 Archived-At: Eli Zaretskii writes: >> From: Andrea Corallo >> Cc: pipcet@gmail.com, Stefan Monnier , >> 41321@debbugs.gnu.org >> Date: Fri, 22 May 2020 08:35:55 +0000 >> >> I'be curious of the outcome if you had a look to your 'garbage_collect' >> assembly to investigate the possible relation with 41357 as suggested >> here >> https://lists.gnu.org/archive/html/bug-gnu-emacs/2020-05/msg01095.html > > Sorry, I'm not sure I understand what you mean by the above. Did you > mean whether I disassembled garbage_collect and looked at the code? Yes, should be quick to see if callee-save regs are pushed. > However, given the latest findings, I now doubt even more that the > issue you identified can have any relation to this problem. As seen > by the backtrace I've shown in my last message, the buffer's overlay > list has invalid overlay objects at the point of the crash. The 2 > pointers to the overlay lists of a buffer are unconditionally marked > in mark_buffer, so I don't see how problems in GC with Lisp objects in > registers could interfere in this case. Am I missing something? Not that I'm aware, I'm no expert of the piece of code you are looking at and haven't investigated into. Was just a 'cheap' idea to exclude a potential problem from the table. Andrea -- akrl@sdf.org