ibus-ui-gtk3 crashed with SIGTRAP right after changing keybinding in Kubuntu 14.10

[fujiwarat]

What version of the product are you using? On what operating system?
OS (Linux distributions, UNIX or ...):Kubuntu 14.10 
Architecture (i386, x86_64):x86 32bit
IBus version:1.5.8
Input method name and version:chewing 1.4.10
Python version:2.7.8
dbus version:1.8.8
dbus-python version:1.2.0
gtk version (if bug is about gtk applications):3.12.2
qt version (if bug is about qt applications):4.8.6

## Reproduce steps
1. Launch ibus-setup
2. Change switch input method keybinding to <ctrl><shift><release>
3. Restart ibus

## Expected behavior
ibus running normally with the new keybinding setuped.

## Current behavior
ibus crashed right after restarting with

traps: ibus-ui-gtk3[4182] trap int3 ip:7fb5db001d30 sp:7fffb2526670 error:0

in kernel log

## Stacktrace

(gdb) run
Starting program: /usr/lib/ibus/ibus-ui-gtk3
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffedbad700 (LWP 6386)]
[New Thread 0x7fffed3ac700 (LWP 6387)]
[New Thread 0x7fffecbab700 (LWP 6389)]

(ibus-ui-gtk3:6382): Gdk-ERROR **: The program 'ibus-ui-gtk3' received an X Window
System error.
This probably reflects a bug in the program.
The error was 'BadValue (integer parameter out of range for operation)'.
(Details: serial 647 error_code 2 request_code 131 (XInputExtension) minor_code 54)
(Note to programmers: normally, X errors are reported asynchronously;
that is, you will receive the error a while after causing it.
To debug your program, run it with the GDK_SYNCHRONIZE environment
variable to change this behavior. You can then get a meaningful
backtrace from your debugger if you break on the gdk_x_error() function.)

Program received signal SIGTRAP, Trace/breakpoint trap.
g_logv (log_domain=0x7ffff744c166 "Gdk", log_level=G_LOG_LEVEL_ERROR, format=,
args=args@entry=0x7fffffffd510) at /build/buildd/glib2.0-2.42.0/./glib/gmessages.c:1046
1046 /build/buildd/glib2.0-2.42.0/./glib/gmessages.c: 沒有此一檔案或目錄.
(gdb) bt
#0 g_logv (log_domain=0x7ffff744c166 "Gdk", log_level=G_LOG_LEVEL_ERROR,

format=<optimized out>, args=args@entry=0x7fffffffd510)
at /build/buildd/glib2.0-2.42.0/./glib/gmessages.c:1046

#1 0x00007ffff55f7f6f in g_log (log_domain=log_domain@entry=0x7ffff744c166 "Gdk",

log_level=log_level@entry=G_LOG_LEVEL_ERROR, format=format@entry=0x7ffff74681d7

"%s")
at /build/buildd/glib2.0-2.42.0/./glib/gmessages.c:1079
#2 0x00007ffff742397b in _gdk_x11_display_error_event (display=display@entry=0x687000,

error=error@entry=0x7fffffffd6c0)
at /build/buildd/gtk+3.0-3.12.2/./gdk/x11/gdkdisplay-x11.c:2536

#3 0x00007ffff742c351 in gdk_x_error (xdisplay=0x6796e0, error=0x7fffffffd6c0)

at /build/buildd/gtk+3.0-3.12.2/./gdk/x11/gdkmain-x11.c:302

#4 0x00007ffff67547ed in _XError (dpy=dpy@entry=0x6796e0, rep=rep@entry=0x80b970)

at ../../src/XlibInt.c:1463

#5 0x00007ffff67517e7 in handle_error (dpy=dpy@entry=0x6796e0, err=0x80b970,

in_XReply=in_XReply@entry=1) at ../../src/xcb_io.c:213

#6 0x00007ffff67528b1 in _XReply (dpy=dpy@entry=0x6796e0, rep=rep@entry=0x7fffffffd880,

extra=extra@entry=0, discard=discard@entry=0) at ../../src/xcb_io.c:699

#7 0x00007ffff651070d in _XIPassiveGrabDevice (dpy=0x6796e0, deviceid=1,

grabtype=grabtype@entry=1, detail=<optimized out>, grab_window=157, cursor=cursor@entry=0,
grab_mode=1, paired_device_mode=1, owner_events=1, mask=0x7fffffffd980, num_modifiers=8,
modifiers_inout=0x80b9a0) at ../../src/XIPassiveGrab.c:88

#8 0x00007ffff651086c in XIGrabKeycode (dpy=, deviceid=,

keycode=<optimized out>, grab_window=<optimized out>, grab_mode=<optimized out>,
paired_device_mode=<optimized out>, owner_events=1, mask=0x7fffffffd980, num_modifiers=8,
modifiers_inout=0x80b9a0) at ../../src/XIPassiveGrab.c:130

#9 0x000000000040dffe in ?? ()
#10 0x0000000000411385 in ?? ()
#11 0x0000000000412d66 in ?? ()
#12 0x0000000000408f5d in ?? ()
#13 0x00007ffff5bcf274 in emit_signal_instance_in_idle_cb (data=0x7fffe80088a0)

at /build/buildd/glib2.0-2.42.0/./gio/gdbusconnection.c:3753

#14 0x00007ffff55f0b6d in g_main_dispatch (context=0x673e20)

at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3111

#15 g_main_context_dispatch (context=context@entry=0x673e20)

at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3710

#16 0x00007ffff55f0f48 in g_main_context_iterate (context=0x673e20, block=block@entry=1,

dispatch=dispatch@entry=1, self=<optimized out>)
at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3781

#17 0x00007ffff55f1272 in g_main_loop_run (loop=0x6c54d0)

at /build/buildd/glib2.0-2.42.0/./glib/gmain.c:3975

#18 0x00007ffff7844045 in gtk_main () at /build/buildd/gtk+3.0-3.12.2/./gtk/gtkmain.c:1192
#19 0x000000000040945e in ?? ()
#20 0x00000000004097f8 in ?? ()
#21 0x0000000000408c30 in ?? ()
#22 0x00007ffff4fe5ec5 in __libc_start_main (main=0x408c20, argc=1, argv=0x7fffffffdd28,

init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>,
stack_end=0x7fffffffdd18) at libc-start.c:287

#23 0x0000000000408c60 in ?? ()

(gdb)

## Workarounds
Currently there's no known workaround, set keybinding back to default value didn't
work.

## Downstream bugreport
https://bugs.launchpad.net/ubuntu/+source/ibus/+bug/1391265

Original issue reported on code.google.com by Vdragon.Taiwan on 2014-11-10 18:56:18

[fujiwarat]

Thank you for the report.
It seems "<Release>" does not work in XIGrabKeycode().
I will remove the "<Release>" button on ibus-setup.

The workaround:
% gsettings reset org.freedesktop.ibus.general.hotkey triggers

Original issue reported on code.google.com by takao.fujiwara1 on 2014-11-11 04:18:01

• Labels added: Component-ibus

[fujiwarat]

https://github.com/ibus/ibus/commit/de3541d2a26c673f27c068559f6d363064e03760

Original issue reported on code.google.com by takao.fujiwara1 on 2014-11-13 02:30:28