From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Christopher Wellons Newsgroups: gmane.emacs.bugs Subject: bug#16344: 24.3; xml-parse-region stuck on specific input, uses lots of memory Date: Sat, 04 Jan 2014 18:39:30 -0500 Message-ID: <87ha9jqpu5.fsf@susie.zeus.nullprogram.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1388878813 1347 80.91.229.3 (4 Jan 2014 23:40:13 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 4 Jan 2014 23:40:13 +0000 (UTC) To: 16344@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sun Jan 05 00:40:20 2014 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1VzapH-0000KN-Mr for geb-bug-gnu-emacs@m.gmane.org; Sun, 05 Jan 2014 00:40:19 +0100 Original-Received: from localhost ([::1]:56099 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VzapH-0001UO-AJ for geb-bug-gnu-emacs@m.gmane.org; Sat, 04 Jan 2014 18:40:19 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:54555) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Vzap6-0001Nr-PY for bug-gnu-emacs@gnu.org; Sat, 04 Jan 2014 18:40:14 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Vzap1-0005q9-Ek for bug-gnu-emacs@gnu.org; Sat, 04 Jan 2014 18:40:08 -0500 Original-Received: from debbugs.gnu.org ([140.186.70.43]:48863) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Vzap1-0005px-AW for bug-gnu-emacs@gnu.org; Sat, 04 Jan 2014 18:40:03 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1Vzap0-0000SB-Rb for bug-gnu-emacs@gnu.org; Sat, 04 Jan 2014 18:40:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Christopher Wellons Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 04 Jan 2014 23:40:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 16344 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: X-Debbugs-Original-To: bug-gnu-emacs@gnu.org Original-Received: via spool by submit@debbugs.gnu.org id=B.13888787971725 (code B ref -1); Sat, 04 Jan 2014 23:40:02 +0000 Original-Received: (at submit) by debbugs.gnu.org; 4 Jan 2014 23:39:57 +0000 Original-Received: from localhost ([127.0.0.1]:34649 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Vzaou-0000Ri-IC for submit@debbugs.gnu.org; Sat, 04 Jan 2014 18:39:56 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:52789) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Vzaor-0000RY-5d for submit@debbugs.gnu.org; Sat, 04 Jan 2014 18:39:53 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Vzaol-0005l1-Gz for submit@debbugs.gnu.org; Sat, 04 Jan 2014 18:39:52 -0500 Original-Received: from lists.gnu.org ([2001:4830:134:3::11]:45265) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Vzaol-0005kx-E3 for submit@debbugs.gnu.org; Sat, 04 Jan 2014 18:39:47 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:54474) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Vzaog-00015X-C8 for bug-gnu-emacs@gnu.org; Sat, 04 Jan 2014 18:39:47 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Vzaob-0005j1-H6 for bug-gnu-emacs@gnu.org; Sat, 04 Jan 2014 18:39:42 -0500 Original-Received: from mail.nullprogram.com ([192.241.191.137]:58884) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Vzaob-0005ip-Dg for bug-gnu-emacs@gnu.org; Sat, 04 Jan 2014 18:39:37 -0500 Original-Received: from localhost ([127.0.0.1] helo=susie.zeus.nullprogram.com) by mail.nullprogram.com with esmtp (Exim 4.82) (envelope-from ) id 1VzaoV-00039X-1q; Sat, 04 Jan 2014 18:39:31 -0500 User-Agent: Notmuch/0.16+156~gdb5189a (http://notmuchmail.org) Emacs/24.3.1 (x86_64-pc-linux-gnu) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 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.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:82956 Archived-At: The function `xml-parse-region' is never returning from parsing this specific input. It's saturing a CPU core while using huge quantities of memory. Fortunately it can be aborted with C-g. (with-temp-buffer (insert "< /x>") (xml-parse-region)) The trigger is a comment followed by at least one opening tag followed by a stray less-than character. This is not valid XML due to that extra space in the closing tag, but I'm expecting `xml-parse-region' to signal an error in the case of invalid input rather than lock up Emacs. Just for the sake of context, this issue was initially discovered here: https://github.com/skeeto/elfeed/issues/17