From unknown Mon Aug 18 08:26:14 2025 X-Loop: help-debbugs@gnu.org Subject: bug#56369: 29.0.50; abort-redisplay: Crash after 'recenter' Resent-From: Florian Rommel Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 03 Jul 2022 15:56:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 56369 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: patch To: 56369@debbugs.gnu.org X-Debbugs-Original-To: bug-gnu-emacs@gnu.org Received: via spool by submit@debbugs.gnu.org id=B.165686376121917 (code B ref -1); Sun, 03 Jul 2022 15:56:02 +0000 Received: (at submit) by debbugs.gnu.org; 3 Jul 2022 15:56:01 +0000 Received: from localhost ([127.0.0.1]:45410 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1o81x3-0005hN-2b for submit@debbugs.gnu.org; Sun, 03 Jul 2022 11:56:01 -0400 Received: from lists.gnu.org ([209.51.188.17]:45352) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1o81wz-0005hE-J5 for submit@debbugs.gnu.org; Sun, 03 Jul 2022 11:56:00 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40888) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o81wz-00025c-8S for bug-gnu-emacs@gnu.org; Sun, 03 Jul 2022 11:55:57 -0400 Received: from read.uberspace.de ([185.26.156.133]:53598) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o81ww-0000wj-Km for bug-gnu-emacs@gnu.org; Sun, 03 Jul 2022 11:55:56 -0400 Received: (qmail 21082 invoked by uid 990); 3 Jul 2022 15:55:51 -0000 Authentication-Results: read.uberspace.de; auth=pass (plain) Message-ID: <0114d3daab13a4de33711ba8fd5e0c21091bbb6b.camel@florommel.de> From: Florian Rommel Date: Sun, 03 Jul 2022 17:55:50 +0200 Content-Type: multipart/mixed; boundary="=-ihS6pPhxqUCRJGdHoWVH" User-Agent: Evolution 3.44.2 MIME-Version: 1.0 X-Rspamd-Bar: - X-Rspamd-Report: BAYES_HAM(-2.999217) MIME_GOOD(-0.1) MIME_BASE64_TEXT_BOGUS(1) MIME_BASE64_TEXT(0.1) X-Rspamd-Score: -1.999217 Received: from unknown (HELO unkown) (::1) by read.uberspace.de (Haraka/2.8.28) with ESMTPSA; Sun, 03 Jul 2022 17:55:51 +0200 Received-SPF: pass client-ip=185.26.156.133; envelope-from=mail@florommel.de; helo=read.uberspace.de X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: -1.7 (-) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.7 (--) --=-ihS6pPhxqUCRJGdHoWVH Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Tags: patch I get a crash caused by a failed free() [see attached backtrace] when running vterm [1] which calls 'recenter' from a loaded module. With gdb, in 'safe_free' I see that the address of the to-be-freed arguments array (allocated in 'module_funcall') is off by one word. I don't know the details of the specpdl stack but I assume that there is a missing 'ubind_to' in 'recenter' before an early return. When I add it (see the attached patch) the problem is gone. [1] https://github.com/akermu/emacs-libvterm --=-ihS6pPhxqUCRJGdHoWVH Content-Disposition: attachment; filename="backtrace.txt" Content-Type: text/plain; name="backtrace.txt"; charset="UTF-8" Content-Transfer-Encoding: base64 ZnJlZSgpOiBpbnZhbGlkIHBvaW50ZXIKClRocmVhZCAxICJlbWFjcyIgcmVjZWl2ZWQgc2lnbmFs IFNJR0FCUlQsIEFib3J0ZWQuCjB4MDAwMDdmZmZmNTkxOTM2YyBpbiA/PyAoKSBmcm9tIC91c3Iv bGliL2xpYmMuc28uNgo+Pj4gYnQKIzAgIDB4MDAwMDdmZmZmNTkxOTM2YyBpbiAgKCkgYXQgL3Vz ci9saWIvbGliYy5zby42CiMxICAweDAwMDA3ZmZmZjU4Yzk4MzggaW4gcmFpc2UgKCkgYXQgL3Vz ci9saWIvbGliYy5zby42CiMyICAweDAwMDA3ZmZmZjU4YjM1MzUgaW4gYWJvcnQgKCkgYXQgL3Vz ci9saWIvbGliYy5zby42CiMzICAweDAwMDA3ZmZmZjU5MGQ0NWUgaW4gICgpIGF0IC91c3IvbGli L2xpYmMuc28uNgojNCAgMHgwMDAwN2ZmZmY1OTIzMGNjIGluICAoKSBhdCAvdXNyL2xpYi9saWJj LnNvLjYKIzUgIDB4MDAwMDdmZmZmNTkyNGY2YyBpbiAgKCkgYXQgL3Vzci9saWIvbGliYy5zby42 CiM2ICAweDAwMDA3ZmZmZjU5Mjc4ZjMgaW4gZnJlZSAoKSBhdCAvdXNyL2xpYi9saWJjLnNvLjYK IzcgIDB4MDAwMDU1NTU1NTZlZTZmNSBpbiB4ZnJlZSAoYmxvY2s9PG9wdGltaXplZCBvdXQ+KSBh 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aWwpOwogCSAgICAgIHJldHVybiBRbmlsOwogCSAgICB9CiAKLS0gCjIuMzcuMAoK --=-ihS6pPhxqUCRJGdHoWVH-- From unknown Mon Aug 18 08:26:14 2025 X-Loop: help-debbugs@gnu.org Subject: bug#56369: 29.0.50; abort-redisplay: Crash after 'recenter' Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 03 Jul 2022 16:09:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 56369 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: patch To: Florian Rommel Cc: 56369@debbugs.gnu.org Received: via spool by 56369-submit@debbugs.gnu.org id=B56369.165686451523227 (code B ref 56369); Sun, 03 Jul 2022 16:09:01 +0000 Received: (at 56369) by debbugs.gnu.org; 3 Jul 2022 16:08:35 +0000 Received: from localhost ([127.0.0.1]:45416 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1o829D-00062Z-GF for submit@debbugs.gnu.org; Sun, 03 Jul 2022 12:08:35 -0400 Received: from eggs.gnu.org ([209.51.188.92]:58194) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1o829B-00062J-JE for 56369@debbugs.gnu.org; Sun, 03 Jul 2022 12:08:34 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]:39630) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o8293-0003JO-M4; Sun, 03 Jul 2022 12:08:26 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=1brhwW8ulWy5XcLA5LU9rS5hANbWzF9awbnkLlGhILk=; b=kaBaQgDfRNpz goiCWTObmSD0c4Txvx7skhe+7KuuVetYTLuAnF47w1GNRgNkwZxO3vlghISbjXIrLf6PujGYz88Ct vxz6pohwohX0f5408fh9e0niPg95cZ5v7R5KXvAy3h3V9VeS02FEGFpFWLNQao/CLCKpb5wBJts36 QzSAq0+hO86N5JYW275PHiPqwcxZJNhGcn0yRWC5Iyg1isuzRf66WhrKMxmtYG+gT3daoYtl6ImTI lxmOq6lMuL2LCo2TLY6BkWYbSbeeXeIK5sWMn8l68G6g8q/nKeRanBvDCH/gXhl1jLPlF2U03YyUS FNiR8CWPo9r2J/ZUSIaTYA==; Received: from [87.69.77.57] (port=2763 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o8293-0004IR-64; Sun, 03 Jul 2022 12:08:25 -0400 Date: Sun, 03 Jul 2022 19:08:13 +0300 Message-Id: <83edz29o2a.fsf@gnu.org> From: Eli Zaretskii In-Reply-To: <0114d3daab13a4de33711ba8fd5e0c21091bbb6b.camel@florommel.de> (message from Florian Rommel on Sun, 03 Jul 2022 17:55:50 +0200) References: <0114d3daab13a4de33711ba8fd5e0c21091bbb6b.camel@florommel.de> X-Spam-Score: -2.3 (--) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -3.3 (---) > From: Florian Rommel > Date: Sun, 03 Jul 2022 17:55:50 +0200 > > I get a crash caused by a failed free() [see attached backtrace] when > running vterm [1] which calls 'recenter' from a loaded module. > With gdb, in 'safe_free' I see that the address of the to-be-freed > arguments array (allocated in 'module_funcall') is off by one word. > > I don't know the details of the specpdl stack but I assume that there > is a missing 'ubind_to' in 'recenter' before an early return. When I > add it (see the attached patch) the problem is gone. Thanks, installed. From unknown Mon Aug 18 08:26:14 2025 MIME-Version: 1.0 X-Mailer: MIME-tools 5.505 (Entity 5.505) X-Loop: help-debbugs@gnu.org From: help-debbugs@gnu.org (GNU bug Tracking System) To: Florian Rommel Subject: bug#56369: closed (Re: bug#56369: 29.0.50; abort-redisplay: Crash after 'recenter') Message-ID: References: <83czem9nxe.fsf@gnu.org> <0114d3daab13a4de33711ba8fd5e0c21091bbb6b.camel@florommel.de> X-Gnu-PR-Message: they-closed 56369 X-Gnu-PR-Package: emacs X-Gnu-PR-Keywords: patch Reply-To: 56369@debbugs.gnu.org Date: Sun, 03 Jul 2022 16:12:02 +0000 Content-Type: multipart/mixed; boundary="----------=_1656864722-23597-1" This is a multi-part message in MIME format... ------------=_1656864722-23597-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Your bug report #56369: 29.0.50; abort-redisplay: Crash after 'recenter' which was filed against the emacs package, has been closed. The explanation is attached below, along with your original report. If you require more details, please reply to 56369@debbugs.gnu.org. --=20 56369: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D56369 GNU Bug Tracking System Contact help-debbugs@gnu.org with problems ------------=_1656864722-23597-1 Content-Type: message/rfc822 Content-Disposition: inline Content-Transfer-Encoding: 7bit Received: (at 56369-done) by debbugs.gnu.org; 3 Jul 2022 16:11:29 +0000 Received: from localhost ([127.0.0.1]:45425 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1o82C1-00067n-6e for submit@debbugs.gnu.org; Sun, 03 Jul 2022 12:11:29 -0400 Received: from eggs.gnu.org ([209.51.188.92]:58568) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1o82C0-00067c-CD for 56369-done@debbugs.gnu.org; Sun, 03 Jul 2022 12:11:28 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]:39718) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o82Bv-0003jy-6M for 56369-done@debbugs.gnu.org; Sun, 03 Jul 2022 12:11:23 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=lHZ9a+XiV5epK7xMYM6DNSvfPlei7cSv9nKUpTAkcrw=; b=QeMy7W38jE+q RXEoDhbL39YEcmLMlCiBzFX1f4uLeuNac1Djv0QcmfP2DDj5SwUbCwLc42fZBqCizRiGh49/RcGGh r1pGnQ9PKG0YuwRAZ+3+acaZBghmsvZIOjQaUhLdTKthx5M4E9578blBkrKDs+uLHU3d0NNB8hmKo aIAKKHBUr9uNy718/CtUlA5JXQxNPbcvAzwlvkAtvVaXOgf6wSWmUTTJzPkgD0BrSNXZuanWL/0Tv AnxK2IhlcQAkd2ru8wWf1iKzuHszBkLn+SaUUukzfHTKWOZq31groxXAt3Vy8pLVkHOVVpjYGLrHk rPJKVxWzclluhPT9AvLSTA==; Received: from [87.69.77.57] (port=2943 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o82Bt-0004Wy-3w for 56369-done@debbugs.gnu.org; Sun, 03 Jul 2022 12:11:23 -0400 Date: Sun, 03 Jul 2022 19:11:09 +0300 Message-Id: <83czem9nxe.fsf@gnu.org> From: Eli Zaretskii To: 56369-done@debbugs.gnu.org In-Reply-To: <0114d3daab13a4de33711ba8fd5e0c21091bbb6b.camel@florommel.de> (message from Florian Rommel on Sun, 03 Jul 2022 17:55:50 +0200) Subject: Re: bug#56369: 29.0.50; abort-redisplay: Crash after 'recenter' References: <0114d3daab13a4de33711ba8fd5e0c21091bbb6b.camel@florommel.de> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 56369-done X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -3.3 (---) Closing. ------------=_1656864722-23597-1 Content-Type: message/rfc822 Content-Disposition: inline Content-Transfer-Encoding: 7bit Received: (at submit) by debbugs.gnu.org; 3 Jul 2022 15:56:01 +0000 Received: from localhost ([127.0.0.1]:45410 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1o81x3-0005hN-2b for submit@debbugs.gnu.org; Sun, 03 Jul 2022 11:56:01 -0400 Received: from lists.gnu.org ([209.51.188.17]:45352) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1o81wz-0005hE-J5 for submit@debbugs.gnu.org; Sun, 03 Jul 2022 11:56:00 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40888) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o81wz-00025c-8S for bug-gnu-emacs@gnu.org; Sun, 03 Jul 2022 11:55:57 -0400 Received: from read.uberspace.de ([185.26.156.133]:53598) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o81ww-0000wj-Km for bug-gnu-emacs@gnu.org; Sun, 03 Jul 2022 11:55:56 -0400 Received: (qmail 21082 invoked by uid 990); 3 Jul 2022 15:55:51 -0000 Authentication-Results: read.uberspace.de; auth=pass (plain) Message-ID: <0114d3daab13a4de33711ba8fd5e0c21091bbb6b.camel@florommel.de> Subject: 29.0.50; abort-redisplay: Crash after 'recenter' From: Florian Rommel To: bug-gnu-emacs@gnu.org Date: Sun, 03 Jul 2022 17:55:50 +0200 Content-Type: multipart/mixed; boundary="=-ihS6pPhxqUCRJGdHoWVH" User-Agent: Evolution 3.44.2 MIME-Version: 1.0 X-Rspamd-Bar: - X-Rspamd-Report: BAYES_HAM(-2.999217) MIME_GOOD(-0.1) MIME_BASE64_TEXT_BOGUS(1) MIME_BASE64_TEXT(0.1) X-Rspamd-Score: -1.999217 Received: from unknown (HELO unkown) (::1) by read.uberspace.de (Haraka/2.8.28) with ESMTPSA; Sun, 03 Jul 2022 17:55:51 +0200 Received-SPF: pass client-ip=185.26.156.133; envelope-from=mail@florommel.de; helo=read.uberspace.de X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: -1.7 (-) X-Debbugs-Envelope-To: submit X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.7 (--) --=-ihS6pPhxqUCRJGdHoWVH Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Tags: patch I get a crash caused by a failed free() [see attached backtrace] when running vterm [1] which calls 'recenter' from a loaded module. With gdb, in 'safe_free' I see that the address of the to-be-freed arguments array (allocated in 'module_funcall') is off by one word. I don't know the details of the specpdl stack but I assume that there is a missing 'ubind_to' in 'recenter' before an early return. When I add it (see the attached patch) the problem is gone. [1] https://github.com/akermu/emacs-libvterm --=-ihS6pPhxqUCRJGdHoWVH Content-Disposition: attachment; filename="backtrace.txt" Content-Type: text/plain; name="backtrace.txt"; charset="UTF-8" Content-Transfer-Encoding: base64 ZnJlZSgpOiBpbnZhbGlkIHBvaW50ZXIKClRocmVhZCAxICJlbWFjcyIgcmVjZWl2ZWQgc2lnbmFs IFNJR0FCUlQsIEFib3J0ZWQuCjB4MDAwMDdmZmZmNTkxOTM2YyBpbiA/PyAoKSBmcm9tIC91c3Iv bGliL2xpYmMuc28uNgo+Pj4gYnQKIzAgIDB4MDAwMDdmZmZmNTkxOTM2YyBpbiAgKCkgYXQgL3Vz ci9saWIvbGliYy5zby42CiMxICAweDAwMDA3ZmZmZjU4Yzk4MzggaW4gcmFpc2UgKCkgYXQgL3Vz ci9saWIvbGliYy5zby42CiMyICAweDAwMDA3ZmZmZjU4YjM1MzUgaW4gYWJvcnQgKCkgYXQgL3Vz ci9saWIvbGliYy5zby42CiMzICAweDAwMDA3ZmZmZjU5MGQ0NWUgaW4gICgpIGF0IC91c3IvbGli L2xpYmMuc28uNgojNCAgMHgwMDAwN2ZmZmY1OTIzMGNjIGluICAoKSBhdCAvdXNyL2xpYi9saWJj LnNvLjYKIzUgIDB4MDAwMDdmZmZmNTkyNGY2YyBpbiAgKCkgYXQgL3Vzci9saWIvbGliYy5zby42 CiM2ICAweDAwMDA3ZmZmZjU5Mjc4ZjMgaW4gZnJlZSAoKSBhdCAvdXNyL2xpYi9saWJjLnNvLjYK IzcgIDB4MDAwMDU1NTU1NTZlZTZmNSBpbiB4ZnJlZSAoYmxvY2s9PG9wdGltaXplZCBvdXQ+KSBh 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