From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of text editors" Newsgroups: gmane.emacs.bugs Subject: bug#58042: 29.0.50; ASAN use-after-free in re_match_2_internal Date: Mon, 08 May 2023 22:25:11 -0400 Message-ID: References: <83edvnv965.fsf@gnu.org> <83pmf6u76i.fsf@gnu.org> <83mtaau43p.fsf@gnu.org> <83ilkytyif.fsf@gnu.org> <877d1ewnx0.fsf@yahoo.com> <87o7muiad8.fsf@yahoo.com> Reply-To: Stefan Monnier Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="5229"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: Gerd =?UTF-8?Q?M=C3=B6llmann?= , Eli Zaretskii , 58042@debbugs.gnu.org, Alan Third To: Po Lu Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Tue May 09 04:26:31 2023 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 1pwD3f-0001B4-Gy for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 09 May 2023 04:26:31 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pwD3E-0007oK-J4; Mon, 08 May 2023 22:26:04 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pwD3D-0007oC-0F for bug-gnu-emacs@gnu.org; Mon, 08 May 2023 22:26:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1pwD3C-0002pw-Nn for bug-gnu-emacs@gnu.org; Mon, 08 May 2023 22:26:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1pwD3C-0000FU-Bj for bug-gnu-emacs@gnu.org; Mon, 08 May 2023 22:26:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Stefan Monnier Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 09 May 2023 02:26:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 58042 X-GNU-PR-Package: emacs Original-Received: via spool by 58042-submit@debbugs.gnu.org id=B58042.1683599129903 (code B ref 58042); Tue, 09 May 2023 02:26:02 +0000 Original-Received: (at 58042) by debbugs.gnu.org; 9 May 2023 02:25:29 +0000 Original-Received: from localhost ([127.0.0.1]:42048 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1pwD2f-0000ET-Kl for submit@debbugs.gnu.org; Mon, 08 May 2023 22:25:29 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:56616) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1pwD2e-0000EF-6z for 58042@debbugs.gnu.org; Mon, 08 May 2023 22:25:28 -0400 Original-Received: from pmg3.iro.umontreal.ca (localhost [127.0.0.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id E2043442E95; Mon, 8 May 2023 22:25:22 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id 90138442E8F; Mon, 8 May 2023 22:25:21 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1683599121; bh=HNsycMR+xBPz/HG0eIcZLFujYqjG+qLrQqewF4hNpdc=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=Hjx4yzmWvsE0YSx1AEFjPm+a9vzPgu2Gi0q4D7e5W7j1xflEpJXlitxIttmc+trtw LxEoCT3kwycqqf5XlfcOd27VnPnMo4t60W/oDkPd71aKCXli0uwNnuCEMF45qWs025 nEiA7UqJlrtotXeETYMrdsv9UU5qVqo1rX8V3oZAfuYKFaPiREcWjuaDHDfodLCWCI UQgAI5Ju9l/w4mMxwGub2VM841nssqUR6ULZ+Q7tmXHrv2mKSsfemaeCtV4wNgU+65 ZSJFxp5TIW4T3rOhhCbBabVZGk+Dothq0vFNYYmU8kdRr8z4MQiH2GJOTvTVaWjtop YHp7Sygt7OS5Q== Original-Received: from pastel (unknown [45.72.217.176]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 34F511208DC; Mon, 8 May 2023 22:25:21 -0400 (EDT) In-Reply-To: <87o7muiad8.fsf@yahoo.com> (Po Lu's message of "Tue, 09 May 2023 09:04:03 +0800") 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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:261375 Archived-At: >> Really? > Yes. Damn! I thought at least `handle_one_xevent` was "ELisp-clean". >> In bug#62732 we have a related problem when code run from `maybe_quit` >> (an atimer in that case) from the regexp engine, and that atimer >> itself performs a regexp-operation, which messes up the outer regexp >> engine invocation because the regexp engine is still not re-entrant (in >> that bug, the problem is the `gl_state` global variable). > > bug#62732? That's: Hmm... not sure how I ended up writing this. I meant bug#63253 Sorry 'bout that. > I don't see how it's related to reentrant use of the regexp engine. > BTW, which atimer is it? The atimer for `with-delayed-message`. Stefan