From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: YAMAMOTO Mitsuharu Newsgroups: gmane.emacs.bugs Subject: bug#52461: spontaneous crash with portable dumper Date: Mon, 13 Dec 2021 10:44:04 +0900 Organization: Faculty of Science, Chiba University Message-ID: References: Mime-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="32679"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?Q?Goj=C5=8D?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/27.2 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) To: 52461@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Mon Dec 13 02:45:19 2021 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 1mwaP1-0008GG-HG for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 13 Dec 2021 02:45:19 +0100 Original-Received: from localhost ([::1]:38700 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mwaOz-0005AR-KF for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 12 Dec 2021 20:45:17 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:46186) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mwaOk-00059v-TG for bug-gnu-emacs@gnu.org; Sun, 12 Dec 2021 20:45:03 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:41942) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mwaOk-0004lZ-LM for bug-gnu-emacs@gnu.org; Sun, 12 Dec 2021 20:45:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1mwaOk-0001pl-Cq for bug-gnu-emacs@gnu.org; Sun, 12 Dec 2021 20:45:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: YAMAMOTO Mitsuharu Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 13 Dec 2021 01:45:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 52461 X-GNU-PR-Package: emacs Original-Received: via spool by 52461-submit@debbugs.gnu.org id=B52461.16393598486962 (code B ref 52461); Mon, 13 Dec 2021 01:45:02 +0000 Original-Received: (at 52461) by debbugs.gnu.org; 13 Dec 2021 01:44:08 +0000 Original-Received: from localhost ([127.0.0.1]:53488 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mwaNs-0001oE-6P for submit@debbugs.gnu.org; Sun, 12 Dec 2021 20:44:08 -0500 Original-Received: from mathmail.math.s.chiba-u.ac.jp ([133.82.132.2]:49637) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mwaNp-0001o5-Rn for 52461@debbugs.gnu.org; Sun, 12 Dec 2021 20:44:06 -0500 Original-Received: from mathent.math.s.chiba-u.ac.jp (mathent [192.168.32.5]) by mathmail.math.s.chiba-u.ac.jp (Postfix) with ESMTP id A4986F08DA for <52461@debbugs.gnu.org>; Mon, 13 Dec 2021 10:44:04 +0900 (JST) (envelope-from mituharu@math.s.chiba-u.ac.jp) 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:222283 Archived-At: On Mon, 13 Dec 2021 10:38:28 +0900, YAMAMOTO Mitsuharu wrote: > > Because cs_i >= charset_table_used, charset_table[cs_i] (i.e., *cs) > contains uninitialized contents. So writing to the area that > cs->code_space_mask points to can cause crash or memory corruption. Sorry, cs->code_space_mask was not the destination address but the source address. So it does not cause memory corruption, but still crash can happen. YAMAMOTO Mitsuharu mituharu@math.s.chiba-u.ac.jp