Bug#911766: libatspi2.0-0: All GTK+ applications segfault unless exporting NO_AT_BRIDGE=1

Wed Oct 24 15:10:46 BST 2018

Package: libatspi2.0-0
Version: 2.30.0-3
Severity: important

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

Hello.

I just got the upgrade of the libatspi2.0-0 from Unstable and I'm not
able to use GTK applications.

- I can't connect with lightdm-gtk-greeter, but slick-greeter works fine
- I can't run emacs-gtk

After installing several -dbgsym I finally got the following backtrace
for Emacs:

gdb emacs
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Reading symbols from emacs...Reading symbols from /usr/lib/debug/.build-id/3c/737718fa7c1b4dfcd5201b9e40af46f36d9222.debug...done.
done.
(gdb) run
Starting program: /usr/bin/emacs
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffedb9f700 (LWP 5346)]

Thread 1 "emacs" received signal SIGSEGV, Segmentation fault.
__strcmp_sse2_unaligned () at ../sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S:32
32      ../sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S: No such file or directory.
(gdb) backtrace
#0  __strcmp_sse2_unaligned () at ../sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S:32
#1  0x00007ffff6bb2974 in g_log_find_domain_L (log_domain=log_domain at entry=0x696e6422 <error: Cannot access memory at address 0x696e6422>) at ../../../../glib/gmessages.c:618
#2  0x00007ffff6bb3c21 in g_logv (log_domain=0x696e6422 <error: Cannot access memory at address 0x696e6422>, log_level=G_LOG_LEVEL_WARNING, format=<optimized out>, args=args at entry=0x7fffffffc260) at ../../../../glib/gmessages.c:1334
#3  0x00007ffff6bb3edf in g_log (log_domain=log_domain at entry=0x696e6422 <error: Cannot access memory at address 0x696e6422>, log_level=log_l
    at ../../../../glib/gmessages.c:1413
#4  0x00007fffee89a342 in get_accessibility_bus_address_dbus () at ../atspi/atspi-misc.c:1533
#5  atspi_get_a11y_bus () at ../atspi/atspi-misc.c:1597
#6  0x00007ffff34e760a in atk_bridge_adaptor_init () from /usr/lib/x86_64-linux-gnu/libatk-bridge-2.0.so.0
#7  0x00007ffff71d5664 in _gtk_accessibility_init () at ../../../../gtk/a11y/gtkaccessibility.c:992
#8  0x00007ffff737fd39 in default_display_notify_cb (dm=<optimized out>) at ../../../../gtk/gtkmain.c:712
#9  0x00007ffff6c8cb6d in g_closure_invoke (closure=0xb42ca0, return_value=0x0, n_param_values=2, param_values=0x7fffffffc610, invocation_hi
#10 0x00007ffff6c9f8f3 in signal_emit_unlocked_R (node=node at entry=0xb3c200, detail=detail at entry=62, instance=instance at entry=0x13aa200, emiss
#11 0x00007ffff6ca8882 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_ar
#12 0x00007ffff6ca8ecf in g_signal_emit (instance=instance at entry=0x13aa200, signal_id=<optimized out>, detail=<optimized out>) at ../../../.
#13 0x00007ffff6c911d4 in g_object_dispatch_properties_changed (object=0x13aa200, n_pspecs=<optimized out>, pspecs=<optimized out>) at ../..
#14 0x00007ffff6c93651 in g_object_notify_by_spec_internal (pspec=<optimized out>, object=0x13aa200) at ../../../../gobject/gobject.c:1181
#15 g_object_notify (object=object at entry=0x13aa200, property_name=property_name at entry=0x7ffff70ec76f "default-display") at ../../../../gobje
#16 0x00007ffff707f629 in gdk_display_manager_set_default_display (manager=manager at entry=0x13aa200, display=<optimized out>) at ../../../../
#17 0x00007ffff707f9b8 in _gdk_display_manager_add_display (manager=0x13aa200, display=0xb58100) at ../../../../gdk/gdkdisplaymanager.c:489
#18 0x00007ffff6c8cb6d in g_closure_invoke (closure=0xb413e0, return_value=0x0, n_param_values=1, param_values=0x7fffffffcb00, invocation_hi
#19 0x00007ffff6c9f124 in signal_emit_unlocked_R (node=node at entry=0xb42800, detail=detail at entry=0, instance=instance at entry=0xb58100, emissio
#20 0x00007ffff6ca8882 in g_signal_emit_valist (instance=instance at entry=0xb58100, signal_id=signal_id at entry=3, detail=detail at entry=0, var_ar
#21 0x00007ffff6ca93a4 in g_signal_emit_by_name (instance=instance at entry=0xb58100, detailed_signal=detailed_signal at entry=0x7ffff70ec73c "ope
#22 0x00007ffff70aaf5a in _gdk_x11_display_open (display_name=<optimized out>) at ../../../../../gdk/x11/gdkdisplay-x11.c:1799
#23 0x00007ffff707f82d in gdk_display_manager_open_display (manager=<optimized out>, name=0xab3260 ":0") at ../../../../gdk/gdkdisplaymanage
#24 0x00007ffff7380f1a in gtk_init_check (argc=<optimized out>, argv=<optimized out>) at ../../../../gtk/gtkmain.c:1104
#25 0x00007ffff7380f49 in gtk_init (argc=argc at entry=0x7fffffffd060, argv=argv at entry=0x7fffffffd080) at ../../../../gtk/gtkmain.c:1161
#26 0x00000000004cdd55 in x_term_init (display_name=display_name at entry=11740228, xrm_option=xrm_option at entry=0x0, resource_name=0xb33978 "em
#27 0x00000000004d0547 in Fx_open_connection (display=11740228, xrm_string=<optimized out>, must_succeed=44544) at ./debian/build-src/src/li
#28 0x00000000005648be in Ffuncall (nargs=4, args=args at entry=0x7fffffffd550) at ./debian/build-src/src/lisp.h:1061
#29 0x0000000000599a6b in exec_byte_code (bytestr=<optimized out>, vector=<optimized out>, maxdepth=<optimized out>, args_template=<optimize
#30 0x000000000056698b in funcall_lambda (fun=140737488345392, nargs=nargs at entry=0, arg_vector=0x12ff030, arg_vector at entry=0x7fffffffd858) a
#31 0x000000000056473b in Ffuncall (nargs=nargs at entry=1, args=args at entry=0x7fffffffd850) at ./debian/build-src/src/eval.c:2760
#32 0x0000000000565fac in Fapply (nargs=2, args=0x7fffffffd850) at ./debian/build-src/src/eval.c:2280
#33 0x0000000000564831 in Ffuncall (nargs=3, args=args at entry=0x7fffffffd848) at ./debian/build-src/src/lisp.h:1061
#34 0x0000000000599a6b in exec_byte_code (bytestr=<optimized out>, vector=<optimized out>, maxdepth=<optimized out>, args_template=<optimize
#35 0x000000000056698b in funcall_lambda (fun=140737488345968, nargs=nargs at entry=0, arg_vector=0x12a1738, arg_vector at entry=0x7fffffffda50) a
#36 0x000000000056473b in Ffuncall (nargs=1, args=args at entry=0x7fffffffda48) at ./debian/build-src/src/eval.c:2760
#37 0x0000000000599a6b in exec_byte_code (bytestr=<optimized out>, vector=<optimized out>, maxdepth=<optimized out>, args_template=<optimize
#38 0x000000000056698b in funcall_lambda (fun=140737488346464, nargs=nargs at entry=0, arg_vector=0x8beca3 <pure+2523971>, arg_vector at entry=0x7
#39 0x000000000056473b in Ffuncall (nargs=1, args=args at entry=0x7fffffffdc90) at ./debian/build-src/src/eval.c:2760
#40 0x0000000000599a6b in exec_byte_code (bytestr=<optimized out>, vector=<optimized out>, maxdepth=<optimized out>, args_template=<optimize
#41 0x000000000056698b in funcall_lambda (fun=0, fun at entry=7845757, nargs=nargs at entry=0, arg_vector=0x8bf857 <pure+2526967>, arg_vector at entr
#42 0x0000000000566d8b in apply_lambda (fun=7845757, args=<optimized out>, count=count at entry=4) at ./debian/build-src/src/eval.c:2800
#43 0x0000000000566368 in eval_sub (form=form at entry=16743907) at ./debian/build-src/src/eval.c:2247
#44 0x000000000056807c in Feval (form=16743907, lexical=<optimized out>) at ./debian/build-src/src/eval.c:1994
#45 0x0000000000563ce2 in internal_condition_case (bfun=bfun at entry=0x4f0e70 <top_level_2>, handlers=handlers at entry=19104, hfun=hfun at entry=0x
#46 0x00000000004f1d60 in top_level_1 (ignore=ignore at entry=0) at ./debian/build-src/src/lisp.h:1113
#47 0x0000000000563c61 in internal_catch (tag=tag at entry=45936, func=func at entry=0x4f1d00 <top_level_1>, arg=arg at entry=0) at ./debian/build-sr
#48 0x00000000004f0de8 in command_loop () at ./debian/build-src/src/lisp.h:1113
#49 0x00000000004f5557 in recursive_edit_1 () at ./debian/build-src/src/keyboard.c:697
#50 0x00000000004f58a8 in Frecursive_edit () at ./debian/build-src/src/keyboard.c:768
#51 0x000000000041923e in main (argc=1, argv=0x7fffffffe188) at ./debian/build-src/src/emacs.c:1629

After looking on internet I fonud the following post:

    https://www.raspberrypi.org/forums/viewtopic.php?p=1227373&sid=d4270389c8db8ce5b543ed7461e32567#p1227389

I tried the following and it's working:

    NO_AT_BRIDGE=1 emacs

Something changed since the previous libatspi2.0-0 package (2.30.0-2)
because my workstation was working yesterday.

Regards.

*** End of the template - remove these template lines ***

-- System Information:
Debian Release: buster/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 4.18.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE=C.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libatspi2.0-0 depends on:
ii  libc6         2.27-6
ii  libdbus-1-3   1.12.10-1
ii  libglib2.0-0  2.58.1-2
ii  libx11-6      2:1.6.7-1

Versions of packages libatspi2.0-0 recommends:
pn  at-spi2-core  <none>

libatspi2.0-0 suggests no packages.

-- no debconf information
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