From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Nicolas =?UTF-8?Q?B=C3=A9rtolo?= Newsgroups: gmane.emacs.bugs Subject: bug#41755: feature/native-comp (master?): temacs crash in GC during mark phase Date: Sun, 7 Jun 2020 16:57:59 -0300 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="91541"; mail-complaints-to="usenet@ciao.gmane.io" Cc: Paul Eggert , 41755@debbugs.gnu.org, Andrea Corallo To: Pip Cet Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Jun 07 22:09:17 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 1ji1bZ-000Ni7-OR for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 07 Jun 2020 22:09:17 +0200 Original-Received: from localhost ([::1]:58278 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ji1bY-0003jc-RK for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 07 Jun 2020 16:09:16 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:32830) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ji1Re-0003aF-Ql for bug-gnu-emacs@gnu.org; Sun, 07 Jun 2020 15:59:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:43457) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1ji1Re-0006ee-GJ for bug-gnu-emacs@gnu.org; Sun, 07 Jun 2020 15:59:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1ji1Re-0003XT-Fw for bug-gnu-emacs@gnu.org; Sun, 07 Jun 2020 15:59:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Nicolas =?UTF-8?Q?B=C3=A9rtolo?= Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 07 Jun 2020 19:59:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 41755 X-GNU-PR-Package: emacs Original-Received: via spool by 41755-submit@debbugs.gnu.org id=B41755.159155989913542 (code B ref 41755); Sun, 07 Jun 2020 19:59:02 +0000 Original-Received: (at 41755) by debbugs.gnu.org; 7 Jun 2020 19:58:19 +0000 Original-Received: from localhost ([127.0.0.1]:55003 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ji1Qx-0003WM-24 for submit@debbugs.gnu.org; Sun, 07 Jun 2020 15:58:19 -0400 Original-Received: from mail-oo1-f46.google.com ([209.85.161.46]:37652) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ji1Qu-0003W6-V5 for 41755@debbugs.gnu.org; Sun, 07 Jun 2020 15:58:17 -0400 Original-Received: by mail-oo1-f46.google.com with SMTP id q188so3068908ooq.4 for <41755@debbugs.gnu.org>; Sun, 07 Jun 2020 12:58:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=F4iI36isrMDIfoaswv37hpuPx+PLHrELKRyVXB+jrOI=; b=N3i0JMcHZ23HLcuKUTSPNKMxhczxrlok7uQkOYXDlOj+ZZrVuoewfAuu4xcJqKiJv+ /Qe1XYwSjoZ9inlIOeyRQs2KDXB8ayaVsxPwcf7ry1++5FhohxU6AV4vpLKxweBlBMld sFa/lA7flDt7c/ujqA/xpED4eXU04/CoOAqVqvSBcN3nwS5ZEz0ZY+ccwfM3PqCTAlK3 uwuDye9PrXI8RSF3yS68gAD6J6i4o+erWEs1qMvTSGDshe6QMEITWvBeT1nNjaTDSCOQ //MyBIM9yFICZfKCPgzptwHZarRWwbS1KT+Ap8jSav7B10KxlMjxu09MT+DQH+G4fHcL aGFg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=F4iI36isrMDIfoaswv37hpuPx+PLHrELKRyVXB+jrOI=; b=O2IcaUjAh3EKssoyxyY1odXnT4MlhCp82JUC4zRf9W04jt5JGDamBgmVjOlwQkUpXc N53LhqTtN69OOjotLLv+JMCFyWmfVdTH8hZ8YwpHmPtQuYi+g3D84BidcbWQe//170eQ V8zDWVwE55Q1XxahFJoPutbrPfhM2zEIrnJNppGSfZHZFGa4u9p898+5KImQMNDJHY1D wJaymorEK5TeOyAs2yrr7yrqdlPed0SoOlcLGuk4zjh6R8cnFg6gZk61kDgr3pxbG8gq FwjWYCfGhmgDo4dYbIvH7NrQSoIa2I6b+CmwNcUibVEfBxOGAupB6B3O8Q9EIhOdOydl +Y9w== X-Gm-Message-State: AOAM530f2uOgpcg/OqomiDq2VVztzbguJVi0yi6/CsBMp6BsFpDn5nI7 313q5MI2y7OeYok8v5RT5lbYRstoIj6Q4tfqE+M= X-Google-Smtp-Source: ABdhPJygAmaQBdjMzsXsaSaFgNtpXqvlZ4oApdQST01KgnJj9BkrlY3AWKy9GCLIbv8BM3fRmrAXWSUif2B1/zd0dxw= X-Received: by 2002:a4a:e049:: with SMTP id v9mr1478090oos.22.1591559891330; Sun, 07 Jun 2020 12:58:11 -0700 (PDT) In-Reply-To: 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:181708 Archived-At: Hi, I can confirm that what I found was this issue. > Does it happen for non-optimized builds? Also, what symbol is at > Lisp_Object value 0xb4f0 (i.e. iQwhatever == 405)? I haven't been able to reproduce it in non-optimized builds. What I understand so far is that the GC begins marking the stack of the main thread and it takes some data in the stack as a pointer to valid Lisp data. It starts following all the pointers and it eventually SIGSEGVs. I have seen it crash trying to read symbols, conses and strings.