bug#36902: Emacs crashed under X11 suddenly

bug#36902: Emacs crashed under X11 suddenly

[leo]

Emacs crashed under X11 suddenly. Emacs was idle for a few minutes. This
has append before, but does not happen all the time.

Emacs was running under RHEL 6 and displayed via the X server MobaXterm
on Windows 7.

Emacs outputted the following on the console it was started from:

Fatal error 6: Aborted
Backtrace:
emacs[0x504ba2]
emacs[0x4ea224]
emacs[0x504c33]
emacs[0x450752]
emacs[0x452ddd]
emacs[0x599f24]
emacs[0x5a16b5]
emacs[0x4ea044]
emacs[0x4b9ff2]
emacs[0x4ba126]
/usr/lib64/libX11.so.6(_XIOError+0x4e)[0x38d804488e]
/usr/lib64/libX11.so.6(_XEventsQueued+0x7d)[0x38d80436ed]
/usr/lib64/libX11.so.6(XPending+0x5d)[0x38d803437d]
/usr/lib64/libgdk-x11-2.0.so.0[0x38dac60492]
/lib64/libglib-2.0.so.0(g_main_context_prepare+0x1a6)[0x38d6044496]
/lib64/libglib-2.0.so.0[0x38d60448e1]
/lib64/libglib-2.0.so.0(g_main_context_pending+0x64)[0x38d6044fd4]
/usr/lib64/libgtk-x11-2.0.so.0(gtk_events_pending+0x19)[0x38dd54dc19]
emacs[0x4ba9b7]
emacs[0x4f2851]
emacs[0x4f2e45]
emacs[0x59e9e4]
emacs[0x4f667c]
emacs[0x4f8777]
emacs[0x4fa1c6]
emacs[0x55d85e]
emacs[0x4ebc2c]
emacs[0x55d7fc]
emacs[0x4ebbe9]
emacs[0x4f0b13]
emacs[0x4f0e4b]
emacs[0x4eae9e]
/lib64/libc.so.6(__libc_start_main+0xf5)[0x38d4821b45]
emacs[0x415615]



In GNU Emacs 26.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version 2.24.23)
  of 2018-06-29 built on ACCRAD01
Windowing system distributor 'MobaXterm', version 11.0.10605000
System Description:	Oracle Linux Server release 6.9

Recent messages:
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Loading /home/broleo/emacs/.custom...
Loading magit-files...done
Loading /home/broleo/emacs/.custom...done
Loading /home/broleo/emacs/.emacs...done
Loading /home/broleo/emacs/user-lisp/leo-ivy.el (source)...done
Turning on magit-auto-revert-mode...done
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For information about GNU Emacs and the GNU system, type C-h C-a.
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bug#36902: Emacs crashed under X11 suddenly

[Eli Zaretskii]

> From: leo <devel@halloleo.hailmail.net>
> Date: Sat, 03 Aug 2019 16:34:24 +1000
> 
> Emacs crashed under X11 suddenly. Emacs was idle for a few minutes. This
> has append before, but does not happen all the time.
> 
> Emacs was running under RHEL 6 and displayed via the X server MobaXterm
> on Windows 7.
> 
> Emacs outputted the following on the console it was started from:
> 
> Fatal error 6: Aborted
> Backtrace:
> emacs[0x504ba2]
> emacs[0x4ea224]
> emacs[0x504c33]
> emacs[0x450752]
> emacs[0x452ddd]
> emacs[0x599f24]
> emacs[0x5a16b5]
> emacs[0x4ea044]
> emacs[0x4b9ff2]
> emacs[0x4ba126]
> /usr/lib64/libX11.so.6(_XIOError+0x4e)[0x38d804488e]
> /usr/lib64/libX11.so.6(_XEventsQueued+0x7d)[0x38d80436ed]
> /usr/lib64/libX11.so.6(XPending+0x5d)[0x38d803437d]
> /usr/lib64/libgdk-x11-2.0.so.0[0x38dac60492]
> /lib64/libglib-2.0.so.0(g_main_context_prepare+0x1a6)[0x38d6044496]
> /lib64/libglib-2.0.so.0[0x38d60448e1]
> /lib64/libglib-2.0.so.0(g_main_context_pending+0x64)[0x38d6044fd4]
> /usr/lib64/libgtk-x11-2.0.so.0(gtk_events_pending+0x19)[0x38dd54dc19]

Please use the technique described in the Emacs manual's node
"Crashing" to convert these addresses into a human-readable list of
files, function names, and line numbers.

Thanks.

bug#36902: Emacs crashed under X11 suddenly

[leo]

[-- Attachment #1: Type: text/plain, Size: 3070 bytes --]

Hi Eli

Thanks fro the manual info about `addr2line`. I have converted the 
addresses of the crash report:

```
emacs_backtrace
??:0
terminate_due_to_signal
/home/wolly/installs/emacs-26.1/src/emacs.c:378
emacs_abort
??:0
redisplay_internal
/home/wolly/installs/emacs-26.1/src/xdisp.c:13827
redisplay_preserve_echo_area
/home/wolly/installs/emacs-26.1/src/xdisp.c:14631
Fdelete_process
??:0
kill_buffer_processes
??:0
shut_down_emacs
/home/wolly/installs/emacs-26.1/src/emacs.c:2097
x_connection_closed
xterm.c:0
x_io_error_quitter
xterm.c:0
??
??:0
??
??:0
??
??:0
??
??:0
??
??:0
??
??:0
??
??:0
??
??:0
XTread_socket
xterm.c:0
gobble_input
/home/wolly/installs/emacs-26.1/src/keyboard.c:6909
process_pending_signals
/home/wolly/installs/emacs-26.1/src/keyboard.c:7150
wait_reading_process_output
??:0
kbd_buffer_get_event
/home/wolly/installs/emacs-26.1/src/keyboard.c:3831
read_event_from_main_queue
/home/wolly/installs/emacs-26.1/src/keyboard.c:2151
read_decoded_event_from_main_queue
/home/wolly/installs/emacs-26.1/src/keyboard.c:2214
read_char
/home/wolly/installs/emacs-26.1/src/keyboard.c:2802
read_key_sequence.constprop.36
/home/wolly/installs/emacs-26.1/src/keyboard.c:9147
command_loop_1
/home/wolly/installs/emacs-26.1/src/keyboard.c:1368
internal_condition_case
??:0
command_loop_2
/home/wolly/installs/emacs-26.1/src/keyboard.c:1111
internal_catch
??:0
command_loop
/home/wolly/installs/emacs-26.1/src/keyboard.c:1093
recursive_edit_1
/home/wolly/installs/emacs-26.1/src/keyboard.c:696
SPECPDL_INDEX
/home/wolly/installs/emacs-26.1/src/lisp.h:3130
Frecursive_edit
/home/wolly/installs/emacs-26.1/src/keyboard.c:738
main
/home/wolly/installs/emacs-26.1/src/emacs.c:1716
??
??:0
_start
??:0
```

HTH,
Leo

 

On 3 Aug 2019, at 17:03, Eli Zaretskii wrote:

>> From: leo <devel@halloleo.hailmail.net>
>> Date: Sat, 03 Aug 2019 16:34:24 +1000
>>
>> Emacs crashed under X11 suddenly. Emacs was idle for a few minutes. 
>> This
>> has append before, but does not happen all the time.
>>
>> Emacs was running under RHEL 6 and displayed via the X server 
>> MobaXterm
>> on Windows 7.
>>
>> Emacs outputted the following on the console it was started from:
>>
>> Fatal error 6: Aborted
>> Backtrace:
>> emacs[0x504ba2]
>> emacs[0x4ea224]
>> emacs[0x504c33]
>> emacs[0x450752]
>> emacs[0x452ddd]
>> emacs[0x599f24]
>> emacs[0x5a16b5]
>> emacs[0x4ea044]
>> emacs[0x4b9ff2]
>> emacs[0x4ba126]
>> /usr/lib64/libX11.so.6(_XIOError+0x4e)[0x38d804488e]
>> /usr/lib64/libX11.so.6(_XEventsQueued+0x7d)[0x38d80436ed]
>> /usr/lib64/libX11.so.6(XPending+0x5d)[0x38d803437d]
>> /usr/lib64/libgdk-x11-2.0.so.0[0x38dac60492]
>> /lib64/libglib-2.0.so.0(g_main_context_prepare+0x1a6)[0x38d6044496]
>> /lib64/libglib-2.0.so.0[0x38d60448e1]
>> /lib64/libglib-2.0.so.0(g_main_context_pending+0x64)[0x38d6044fd4]
>> /usr/lib64/libgtk-x11-2.0.so.0(gtk_events_pending+0x19)[0x38dd54dc19]
>
> Please use the technique described in the Emacs manual's node
> "Crashing" to convert these addresses into a human-readable list of
> files, function names, and line numbers.
>
> Thanks.

[-- Attachment #2: Type: text/html, Size: 4072 bytes --]

bug#36902: Emacs crashed under X11 suddenly

[Eli Zaretskii]

> From: leo <devel@halloleo.hailmail.net>
> Cc: 36902@debbugs.gnu.org
> Date: Thu, 08 Aug 2019 09:30:24 +1000
> 
> Thanks fro the manual info about addr2line. I have converted the addresses of the crash report:

Thanks.  hard to say what exactly happened here.  Looks like some X
protocol error caused us to close the X connection, with the result
that Emacs crashed, most probably because we tried to display
something on an X window that was already deleted.

bug#36902: Emacs crashed under X11 suddenly

[leo]

Hi Eli

Yes, I have sometimes trouble interrupted X sessions.

Sorry to hog you her on the bugs email, but is there a way to keep emacs 
alive when the X session disappears? And then later, is it possible to 
reconnect to that emacs session via a DISPLAY?

Thanks,
Leo

On 10 Aug 2019, at 19:00, Eli Zaretskii wrote:

>> From: leo <devel@halloleo.hailmail.net>
>> Cc: 36902@debbugs.gnu.org
>> Date: Thu, 08 Aug 2019 09:30:24 +1000
>>
>> Thanks fro the manual info about addr2line. I have converted the 
>> addresses of the crash report:
>
> Thanks.  hard to say what exactly happened here.  Looks like some X
> protocol error caused us to close the X connection, with the result
> that Emacs crashed, most probably because we tried to display
> something on an X window that was already deleted.

bug#36902: Emacs crashed under X11 suddenly

[Eli Zaretskii]

> From: leo <devel@halloleo.hailmail.net>
> Cc: 36902@debbugs.gnu.org
> Date: Sun, 11 Aug 2019 19:35:23 +1000
> 
> Yes, I have sometimes trouble interrupted X sessions.
> 
> Sorry to hog you her on the bugs email, but is there a way to keep emacs 
> alive when the X session disappears? And then later, is it possible to 
> reconnect to that emacs session via a DISPLAY?

You could start Emacs as a daemon and close the frames when you make a
break, then X problems should not cause any harm, and you can restore
the frames later with emacsclient.

Otherwise, I don't think we can survive X problems which happen while
you actually type.

bug#36902: Emacs crashed under X11 suddenly

[Stefan Kangas]

tags 36902 + notabug
close 36902
quit

Eli Zaretskii <eliz@gnu.org> writes:

>> From: leo <devel@halloleo.hailmail.net>
>> Cc: 36902@debbugs.gnu.org
>> Date: Sun, 11 Aug 2019 19:35:23 +1000
>>
>> Yes, I have sometimes trouble interrupted X sessions.
>>
>> Sorry to hog you her on the bugs email, but is there a way to keep emacs
>> alive when the X session disappears? And then later, is it possible to
>> reconnect to that emacs session via a DISPLAY?
>
> You could start Emacs as a daemon and close the frames when you make a
> break, then X problems should not cause any harm, and you can restore
> the frames later with emacsclient.
>
> Otherwise, I don't think we can survive X problems which happen while
> you actually type.

So this does not seem to be due to Emacs, but due to interrupted X
sessions.  The workaround is to start Emacs as a daemon and use
emacsclient.

I'm therefore closing this as notabug.  Please reopen if there is
something that I've misunderstood.

Thanks,
Stefan Kangas