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 Users list for the GNU Emacs text editor Newsgroups: gmane.emacs.help Subject: Re: Emacs locks up Date: Sun, 20 Jun 2021 09:40:27 -0400 Message-ID: References: <20210619141522.21e71ae3@gauss> 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="652"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:kxfSnXWiGxPapjd7rR2dXDoHum8= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Sun Jun 20 15:41:03 2021 Return-path: Envelope-to: geh-help-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 1luxh9-000AWy-3H for geh-help-gnu-emacs@m.gmane-mx.org; Sun, 20 Jun 2021 15:41:03 +0200 Original-Received: from localhost ([::1]:56892 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1luxh8-0004sm-4R for geh-help-gnu-emacs@m.gmane-mx.org; Sun, 20 Jun 2021 09:41:02 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:39182) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1luxgl-0004sc-6o for help-gnu-emacs@gnu.org; Sun, 20 Jun 2021 09:40:39 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:53730) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1luxgj-00077a-EB for help-gnu-emacs@gnu.org; Sun, 20 Jun 2021 09:40:38 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1luxgg-0009xI-Ox for help-gnu-emacs@gnu.org; Sun, 20 Jun 2021 15:40:34 +0200 X-Injected-Via-Gmane: http://gmane.org/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:131098 Archived-At: Joe Riel [2021-06-19 14:15:22] wrote: > I've written a debugger controlled by Emacs. It uses make-network-process > to communicate with a client over TCP. Works fine on linux and Windows. > However, when running the client in Windows 10 in virtualbox, with Emacs > running on the host system (linux), occasionally Emacs locks up. > > When that occurs I have to kill Emacs---it is otherwise unresponsive. > Have no good idea how to fix or debug this. Just being able to restore Emacs > without killing it would be useful. Any suggestions are appreciated. You might like to try `kill -USR2` which may(!) bring Emacs back to life and give you a Lisp backtrace of where it's stuck. If that doesn't work, you'll need to attach to the process with a debugger to get the C level backtrace. Stefan