From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Ryan Thompson Newsgroups: gmane.emacs.bugs Subject: bug#5802: emacsclient -c crashes emacs --daemon intermittently; have strace Date: Sat, 3 Apr 2010 14:20:04 -0700 Message-ID: References: <2a4ba2fd1003251154w52283ce8w9a728b4d1e1c4170@mail.gmail.com> <2a4ba2fd1003291508t5fccd372h2c13bbd3f19f83f7@mail.gmail.com> <2a4ba2fd1003301006w23d9110ch87068e1a6862a687@mail.gmail.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 X-Trace: dough.gmane.org 1270329980 30640 80.91.229.12 (3 Apr 2010 21:26:20 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Sat, 3 Apr 2010 21:26:20 +0000 (UTC) Cc: 5802@debbugs.gnu.org To: Dan Nicolaescu Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Apr 03 23:26:15 2010 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1NyAr7-0003ga-7O for geb-bug-gnu-emacs@m.gmane.org; Sat, 03 Apr 2010 23:26:13 +0200 Original-Received: from localhost ([127.0.0.1]:40442 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NyAr4-0002s8-1F for geb-bug-gnu-emacs@m.gmane.org; Sat, 03 Apr 2010 17:26:10 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1NyAqt-0002oh-EH for bug-gnu-emacs@gnu.org; Sat, 03 Apr 2010 17:25:59 -0400 Original-Received: from [140.186.70.92] (port=46600 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NyAqr-0002ng-QJ for bug-gnu-emacs@gnu.org; Sat, 03 Apr 2010 17:25:58 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1NyAqo-0006WB-Rl for bug-gnu-emacs@gnu.org; Sat, 03 Apr 2010 17:25:57 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:49973) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1NyAqo-0006W4-BR for bug-gnu-emacs@gnu.org; Sat, 03 Apr 2010 17:25:54 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.69) (envelope-from ) id 1NyAm6-0007eA-FP; Sat, 03 Apr 2010 17:21:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Ryan Thompson Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-To: owner@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 03 Apr 2010 21:21:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 5802 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 5802-submit@debbugs.gnu.org id=B5802.127032963529386 (code B ref 5802); Sat, 03 Apr 2010 21:21:02 +0000 Original-Received: (at 5802) by debbugs.gnu.org; 3 Apr 2010 21:20:35 +0000 Original-Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1NyAle-0007dv-FS for submit@debbugs.gnu.org; Sat, 03 Apr 2010 17:20:34 -0400 Original-Received: from mail-iw0-f192.google.com ([209.85.223.192]) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1NyAlY-0007do-Q7 for 5802@debbugs.gnu.org; Sat, 03 Apr 2010 17:20:32 -0400 Original-Received: by iwn30 with SMTP id 30so2131512iwn.28 for <5802@debbugs.gnu.org>; Sat, 03 Apr 2010 14:20:24 -0700 (PDT) Original-Received: by 10.231.14.193 with HTTP; Sat, 3 Apr 2010 14:20:04 -0700 (PDT) In-Reply-To: Original-Received: by 10.231.153.205 with SMTP id l13mr1685787ibw.64.1270329624253; Sat, 03 Apr 2010 14:20:24 -0700 (PDT) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list Resent-Date: Sat, 03 Apr 2010 17:21:02 -0400 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) 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: , Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:35900 Archived-At: On Thu, Apr 1, 2010 at 12:50 PM, Dan Nicolaescu wrote: > Ryan Thompson writes: > >> On Tue, Mar 30, 2010 at 10:47 AM, Dan Nicolaescu wrote: >>> Ryan Thompson writes: >>> >>>> On Tue, Mar 30, 2010 at 8:46 AM, Dan Nicolaescu wrote: >>>>> Ryan Thompson writes: >>>>> >>>>>> I am trying to set myself up using emacs --daemon so that I can easily >>>>>> manage multiple emacs frames within one process. However, I have hit a >>>>>> significant stumbling block. If I run emacs --daemon (or emacs -nw and >>>>>> then do (server-start) ) and then repeatedly run emacsclient -c and >>>>>> clost the resulting window, emacs will randomly crash. Sometimes it >>>>>> happens on the first time that I run emacsclient -c, sometimes on the >>>>>> 20th. >>>>>> >>>>>> I use Ubuntu 9.10, and I have reported this bug in Launchpad. However, >>>>>> I have also compiled both emacs 23.1 and trunk from vanilla sources, >>>>>> and both of these exhibit the same bug as the Ubuntu-packaged >>>>>> versions. >>>>>> >>>>>> I have generated some stack traces by the following procedure, as >>>>>> described at https://bugs.launchpad.net/ubuntu/+source/emacs23/+bug/543611 >>>>>> >>>>>> Open two terminals. In the first terminal, run the following commands >>>>>> to start emacs with strace: >>>>>> >>>>>> $ mkdir -p /tmp/emacs-strace >>>>>> $ strace -o /tmp/emacs-strace/trace-`date +%s`.log emacs -Q -nw >>>>>> >>>>>> When emacs has started, do M-x server-start so that emacsclient can >>>>>> work. Now, in the second terminal, run the following command: >>>>>> >>>>>> $ x=0; while emacsclient -c ; do x=$(( $x + 1 )); done; echo "Created >>>>>> $x windows before crash." >>>>>> >>>>>> Now, an emacs window will open. Close it. Each time you close a >>>>>> window, a new emacs window will open. Keep closing each one that >>>>>> appears. If emacs exhibits the bug, then eventually you will close one >>>>>> window, and emacs will crash when it tries to create the next one. At >>>>>> this point, you can go get your stack trace in /tmp/emacs-strace. >>>>> >>>>> This is very likely due to a long standing bug in Gtk+, see: >>>>> http://bugzilla.gnome.org/show_bug.cgi?id=85715 >>>>> >>>>> Please compile emacs using >>>>> >>>>> ./configure --with-x-toolkit=lucid >>>>> >>>>> and try to reproduce the problem you are seeing with that emacs. >>>>> >>>> >>>> I tried that; same problem. Would you like a stack trace? >>> >>> Sure, for the lucid version please. >>> But please get the stack trace using by attaching gdb to emacs. >>> See etc/DEBUG for more info. >>> >>> Also, please start emacs using "emacs -Q" >>> >>> >>> >> >> I tried to figure out gdb, but I couldn't figure it out in the time I >> had. But I have been running all my tests with -Q. I'll try again when >> I have more time to mess around with it. > > cd emacs/src > gdb ./emacs > run -Q -nw -f server-start > > > do whatever you do to to crash emacs, and when that happens type > > xbacktrace > > in gdb > > Again, this is only useful for the version compiled using ./configure --with-x-toolkit=lucid > On further inspection, I can no longer reproduce the crash --with-x-toolkit=lucid. The segfault in the gtk version occurs in "gdk_screen_get_display," from /usr/lib/libgdk-x11-2.0.so.0, which is in Ubuntu package libgtk2.0-0 version 2.18.3-1ubuntu2.2. When the lucid version, emacs does not crash, but for some reason, when I run the emacsclient frame-creating loop that I described previously, sometimes the client frame disappears as soon as it appears, and I assumed that a crash had occurred. But in this case, emacs does not crash, and I only get the problem in a loop like this. Simply running "emacsclient -c" manually over and over at the command-line never causes a frame to disappear. So, I think I will move forward using the lucid version, and you can mark this as a GTK problem. Thanks for your patience.