From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Juri Linkov Newsgroups: gmane.emacs.bugs Subject: bug#45277: D-Bus crashes and DND errors Date: Mon, 28 Dec 2020 19:03:47 +0200 Organization: LINKOV.NET Message-ID: <87r1narllw.fsf@mail.linkov.net> References: <87zh2dijdl.fsf@mail.linkov.net> <874kkkz3a9.fsf@gmx.de> <87lfdwhzek.fsf@mail.linkov.net> <87pn37xvkv.fsf@gmx.de> <877dpcp9yg.fsf@mail.linkov.net> <87k0tc9qkx.fsf@gmx.de> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="20653"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (x86_64-pc-linux-gnu) Cc: 45277@debbugs.gnu.org To: Michael Albinus Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Mon Dec 28 18:24:56 2020 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 1ktwGO-0005Go-Nk for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 28 Dec 2020 18:24:56 +0100 Original-Received: from localhost ([::1]:54838 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ktwGN-0007Je-Pf for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 28 Dec 2020 12:24:55 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:48506) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ktwDZ-0004do-V7 for bug-gnu-emacs@gnu.org; Mon, 28 Dec 2020 12:22:02 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:53406) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1ktwDZ-00086q-NQ for bug-gnu-emacs@gnu.org; Mon, 28 Dec 2020 12:22:01 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1ktwDZ-0005CO-J6 for bug-gnu-emacs@gnu.org; Mon, 28 Dec 2020 12:22:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Juri Linkov Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 28 Dec 2020 17:22:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 45277 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: patch Original-Received: via spool by 45277-submit@debbugs.gnu.org id=B45277.160917611919969 (code B ref 45277); Mon, 28 Dec 2020 17:22:01 +0000 Original-Received: (at 45277) by debbugs.gnu.org; 28 Dec 2020 17:21:59 +0000 Original-Received: from localhost ([127.0.0.1]:36717 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ktwDW-0005C0-KB for submit@debbugs.gnu.org; Mon, 28 Dec 2020 12:21:58 -0500 Original-Received: from relay10.mail.gandi.net ([217.70.178.230]:36381) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ktwDT-0005Bg-Sc; Mon, 28 Dec 2020 12:21:57 -0500 Original-Received: from mail.gandi.net (m91-129-99-98.cust.tele2.ee [91.129.99.98]) (Authenticated sender: juri@linkov.net) by relay10.mail.gandi.net (Postfix) with ESMTPSA id 02DE7240005; Mon, 28 Dec 2020 17:21:47 +0000 (UTC) In-Reply-To: <87k0tc9qkx.fsf@gmx.de> (Michael Albinus's message of "Sun, 20 Dec 2020 21:21:02 +0100") 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:196879 Archived-At: retitle 45277 Non-DBus crashes quit >>> Do you have a recipe how to provoke this error? >> >> After dbus-handle-event started to pull random parts of the init file >> to use as its event arg, I realized that something is wrong with the build, >> made clean bootstrap, and D-Bus problems went away. Sorry for false alarm. > > No problem, I'm happy there's no random bug in dbusbind.c. Bad news: after pull from master and recompiling it crashes again. Good news: crashes are not caused by dbusbind.c. Usually, DBUS_DEBUG prints such lines: xd_read_message_1: Event received: ... xd_read_message_1: Event stored: ... xd_read_message_1: Event received: ... xd_read_message_1: Event stored: ... ... But when such error is signaled: Debugger entered--Lisp error: (wrong-type-argument number-or-marker-p "Click to close tab") dbus-handle-event((dbus-event :help "Click to close tab")) funcall-interactively(dbus-handle-event (dbus-event :help "Click to close tab")) call-interactively(dbus-handle-event nil [(dbus-event :help "Click to close tab")]) command-execute(dbus-handle-event nil [(dbus-event :help "Click to close tab")] t) there were no DBUS_DEBUG messages before this error comes. So the erroneous events are not added by dbusbind.c. Here's is a brief sequence of events: 1. In web browser copied a URL to the clipboard; 2. In Emacs this immediately causes a DBUS_EVENT event added to kbd_buffer: Thread 1 "emacs" hit Breakpoint 5, make_lispy_event (event=0x555555cb93c8 ) at keyboard.c:6015 6015 return Fcons (Qdbus_event, event->arg); (gdb) bt #0 make_lispy_event (event=0x555555cb93c8 ) at keyboard.c:6015 #1 0x00005555557131b9 in kbd_buffer_get_event (kbp=0x7fffffffc668, used_mouse_menu=0x7fffffffdcb9, end_time=0x0) at keyboard.c:3978 #2 0x000055555570ed06 in read_event_from_main_queue (end_time=0x0, local_getcjmp=0x7fffffffcab0, used_mouse_menu=0x7fffffffdcb9) at keyboard.c:2159 #3 0x000055555570f023 in read_decoded_event_from_main_queue (end_time=0x0, local_getcjmp=0x7fffffffcab0, prev_event=XIL(0), used_mouse_menu=0x7fffffffdcb9) at keyboard.c:2223 #4 0x0000555555710857 in read_char (commandflag=1, map=XIL(0x55555a5c9943), prev_event=XIL(0), used_mouse_menu=0x7fffffffdcb9, end_time=0x0) at keyboard.c:2833 #5 0x000055555571fab7 in read_key_sequence (keybuf=0x7fffffffdee0, prompt=XIL(0), dont_downcase_last=false, can_return_switch_frame=true, fix_current_buffer=true, prevent_redisplay=false) at keyboard.c:9498 #6 0x000055555570c918 in command_loop_1 () at keyboard.c:1353 #7 0x00005555557caed4 in internal_condition_case (bfun=0x55555570c4b0 , handlers=XIL(0x90), hfun=0x55555570bbed ) at eval.c:1415 #8 0x000055555570c154 in command_loop_2 (ignore=XIL(0)) at keyboard.c:1094 #9 0x00005555557ca6d7 in internal_catch (tag=XIL(0xd800), func=0x55555570c123 , arg=XIL(0)) at eval.c:1176 #10 0x000055555570c0ef in command_loop () at keyboard.c:1073 #11 0x000055555570b79e in recursive_edit_1 () at keyboard.c:720 #12 0x000055555570b929 in Frecursive_edit () at keyboard.c:789 #13 0x00005555557080a0 in main (argc=1, argv=0x7fffffffe368) at emacs.c:2054 (gdb) fr 1 #1 0x00005555557131b9 in kbd_buffer_get_event (kbp=0x7fffffffc668, used_mouse_menu=0x7fffffffdcb9, end_time=0x0) at keyboard.c:3978 3978 obj = make_lispy_event (&event->ie); (gdb) p event->kind $1 = DBUS_EVENT (gdb) p (int)event->kind $2 = 27 (gdb) p event->ie $3 = { kind = DBUS_EVENT, part = scroll_bar_nowhere, code = 0, modifiers = 0, x = XIL(0), y = XIL(0), timestamp = 0, frame_or_window = XIL(0), arg = XIL(0x555557db7e23) } (gdb) p event->ie->arg $4 = XIL(0x555557db7e23) (gdb) pr (:help "Click to close tab") (gdb) p event->sie $5 = { kind = DBUS_EVENT, dpyinfo = 0x0, requestor = 0, selection = 0, target = 0, property = 0, time = 0 } (gdb) c Continuing. Thread 1 "emacs" hit Breakpoint 5, make_lispy_event (event=0x555555cbd0d0 ) at keyboard.c:6015 6015 return Fcons (Qdbus_event, event->arg); (gdb) fr 1 #1 0x00005555557131b9 in kbd_buffer_get_event (kbp=0x7fffffffc668, used_mouse_menu=0x7fffffffdcb9, end_time=0x0) at keyboard.c:3978 3978 obj = make_lispy_event (&event->ie); (gdb) p event->kind $6 = DBUS_EVENT (gdb) p event->ie $7 = { kind = DBUS_EVENT, part = scroll_bar_nowhere, code = 0, modifiers = 0, x = XIL(0), y = XIL(0), timestamp = 0, frame_or_window = XIL(0), arg = XIL(0x555560a70f43) } (gdb) p event->ie->arg $8 = XIL(0x555560a70f43) (gdb) pr # (gdb) c Continuing. Thread 1 "emacs" received signal SIGSEGV, Segmentation fault. string_intervals (s=XIL(0x6c613a5b5e5b285c)) at lisp.h:3404 3404 return XSTRING (s)->u.s.intervals; Maybe making bootstrap after every pull from master will solve these problems?