Re: [orca-list] rare orca crash on windows switch

[Joanmarie Diggs <jdiggs igalia com>]

Looks like another instance of
https://bugzilla.gnome.org/show_bug.cgi?id=767074

--joanie

On 04/17/2017 09:34 AM, Michał Zegan wrote:
> Hello.
>
> On my old computer, and also on the far newer, faster one, when
> switching windows, orca sometimes crashes. But, here, I get a backtrace,
> and can paste it.
> I had this problem twice, so I will paste two backtraces.
> 1:
> Fatal Python error: Segmentation fault
> Stack (most recent call first):
>   File "/usr/lib/python3.6/site-packages/pyatspi/Accessibility.py", line
> 184 in <lambda>
>   File "/usr/lib/python3.6/site-packages/orca/event_manager.py", line
> 264 in _queuePrintln
> Started Process Core Dump (PID 15799/UID 0).
>   File "/usr/lib/python3.6/site-packages/orca/event_manager.py", line
> 338 in _dequeue
>   File "/usr/lib/python3.6/site-packages/pyatspi/registry.py", line 155
> in start
>   File "/usr/lib/python3.6/site-packages/orca/orca.py", line 561 in start
>   File "/usr/lib/python3.6/site-packages/orca/orca.py", line 712 in main
>   File "/usr/bin/orca", line 269 in main
>   File "/usr/bin/orca", line 272 in <module>
> Process 935 (orca) of user 1000 dumped core.
>
> Stack trace of thread 935:
> #0  0x00007fd90dbe4ea0 raise (libpthread.so.0)
> #1  0x00007fd90dbe4fe0 __restore_rt (libpthread.so.0)
> #2  0x00007fd909161376 atspi_accessible_get_parent (libatspi.so.0)
> #3  0x00007fd909161619 atspi_accessible_get_application (libatspi.so.0)
> #4  0x00007fd90b82e1c8 ffi_call_unix64 (libffi.so.6)
> #5  0x00007fd90b82dc2a ffi_call (libffi.so.6)
> #6  0x00007fd90c1f697c n/a (_gi.cpython-36m-x86_64-linux-gnu.so)
> #7  0x00007fd90c1f8428 n/a (_gi.cpython-36m-x86_64-linux-gnu.so)
> #8  0x00007fd90c1ec1b9 n/a (_gi.cpython-36m-x86_64-linux-gnu.so)
> #9  0x00007fd90d48c84c _PyObject_FastCallDict (libpython3.6m.so.1.0)
> #10 0x00007fd90d437b86 n/a (libpython3.6m.so.1.0)
> #11 0x00007fd90d3f3d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #12 0x00007fd90d437f47 PyEval_EvalCodeEx (libpython3.6m.so.1.0)
> #13 0x00007fd90d4527d3 n/a (libpython3.6m.so.1.0)
> #14 0x00007fd90d48d91b PyObject_Call (libpython3.6m.so.1.0)
> #15 0x00007fd90d45a13e n/a (libpython3.6m.so.1.0)
> #16 0x00007fd90d469e9d _PyObject_GenericGetAttrWithDict
> (libpython3.6m.so.1.0)
> #17 0x00007fd90d3f3df9 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #18 0x00007fd90d436291 n/a (libpython3.6m.so.1.0)
> #19 0x00007fd90d43778a n/a (libpython3.6m.so.1.0)
> #20 0x00007fd90d437af3 n/a (libpython3.6m.so.1.0)
> #21 0x00007fd90d3f4ba9 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #22 0x00007fd90d436f9a _PyFunction_FastCallDict (libpython3.6m.so.1.0)
> #23 0x00007fd90d48ca4e _PyObject_FastCallDict (libpython3.6m.so.1.0)
> #24 0x00007fd90d48d852 _PyObject_Call_Prepend (libpython3.6m.so.1.0)
> #25 0x00007fd90d48d91b PyObject_Call (libpython3.6m.so.1.0)
> #26 0x00007fd90c1f43dc n/a (_gi.cpython-36m-x86_64-linux-gnu.so)
> #27 0x00007fd90b82dfbf ffi_closure_unix64_inner (libffi.so.6)
> #28 0x00007fd90b82e330 ffi_closure_unix64 (libffi.so.6)
> #29 0x00007fd90ba7b45a g_main_context_dispatch (libglib-2.0.so.0)
> #30 0x00007fd90ba7b810 n/a (libglib-2.0.so.0)
> #31 0x00007fd90ba7bb32 g_main_loop_run (libglib-2.0.so.0)
> #32 0x00007fd909167aac atspi_event_main (libatspi.so.0)
> #33 0x00007fd90b82e1c8 ffi_call_unix64 (libffi.so.6)
> #34 0x00007fd90b82dc2a ffi_call (libffi.so.6)
> #35 0x00007fd90c1f697c n/a (_gi.cpython-36m-x86_64-linux-gnu.so)
> #36 0x00007fd90c1f8428 n/a (_gi.cpython-36m-x86_64-linux-gnu.so)
> #37 0x00007fd90d48c84c _PyObject_FastCallDict (libpython3.6m.so.1.0)
> #38 0x00007fd90d437b86 n/a (libpython3.6m.so.1.0)
> #39 0x00007fd90d3f3d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #40 0x00007fd90d436629 n/a (libpython3.6m.so.1.0)
> #41 0x00007fd90d43778a n/a (libpython3.6m.so.1.0)
> #42 0x00007fd90d437af3 n/a (libpython3.6m.so.1.0)
> #43 0x00007fd90d3f4ba9 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #44 0x00007fd90d43753a n/a (libpython3.6m.so.1.0)
> #45 0x00007fd90d437af3 n/a (libpython3.6m.so.1.0)
> #46 0x00007fd90d3f3d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #47 0x00007fd90d435963 n/a (libpython3.6m.so.1.0)
> #48 0x00007fd90d437af3 n/a (libpython3.6m.so.1.0)
> #49 0x00007fd90d3f3d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #50 0x00007fd90d43753a n/a (libpython3.6m.so.1.0)
> #51 0x00007fd90d437af3 n/a (libpython3.6m.so.1.0)
> #52 0x00007fd90d3f3d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #53 0x00007fd90d437f47 PyEval_EvalCodeEx (libpython3.6m.so.1.0)
> #54 0x00007fd90d3f3a5b PyEval_EvalCode (libpython3.6m.so.1.0)
> #55 0x00007fd90d4bcdc2 n/a (libpython3.6m.so.1.0)
> #56 0x00007fd90d4bf62d PyRun_FileExFlags (libpython3.6m.so.1.0)
> #57 0x00007fd90d4bf817 PyRun_SimpleFileExFlags (libpython3.6m.so.1.0)
> #58 0x00007fd90d4b46f1 Py_Main (libpython3.6m.so.1.0)
> #59 0x0000000000400a5d main (python3.6)
> #60 0x00007fd90d84f511 __libc_start_main (libc.so.6)
> #61 0x0000000000400b9a _start (python3.6)
>
> Stack trace of thread 939:
> #0  0x00007fd90d91167d poll (libc.so.6)
> #1  0x00007fd90ba7b7a6 n/a (libglib-2.0.so.0)
> #2  0x00007fd90ba7b8bc g_main_context_iteration (libglib-2.0.so.0)
> #3  0x00007fd90ba7b901 n/a (libglib-2.0.so.0)
> #4  0x00007fd90baa3175 n/a (libglib-2.0.so.0)
> #5  0x00007fd90dbda2e7 start_thread (libpthread.so.0)
> #6  0x00007fd90d91b54f __clone (libc.so.6)
>
> Stack trace of thread 948:
> #0  0x00007fd90d91167d poll (libc.so.6)
> #1  0x00007fd90ba7b7a6 n/a (libglib-2.0.so.0)
> #2  0x00007fd90ba7b8bc g_main_context_iteration (libglib-2.0.so.0)
> #3  0x00007fd9031b14bd n/a (libdconfsettings.so)
> #4  0x00007fd90baa3175 n/a (libglib-2.0.so.0)
> #5  0x00007fd90dbda2e7 start_thread (libpthread.so.0)
> #6  0x00007fd90d91b54f __clone (libc.so.6)
>
> Stack trace of thread 949:
> #0  0x00007fd90d91167d poll (libc.so.6)
> #1  0x00007fd90ba7b7a6 n/a (libglib-2.0.so.0)
> #2  0x00007fd90ba7bb32 g_main_loop_run (libglib-2.0.so.0)
> #3  0x00007fd90b35b446 n/a (libgio-2.0.so.0)
> #4  0x00007fd90baa3175 n/a (libglib-2.0.so.0)
> #5  0x00007fd90dbda2e7 start_thread (libpthread.so.0)
> #6  0x00007fd90d91b54f __clone (libc.so.6)
>
> Stack trace of thread 1008:
> #0  0x00007fd90dbe42df recv (libpthread.so.0)
> #1  0x00007fd90a08ef96 n/a (_socket.cpython-36m-x86_64-linux-gnu.so)
> #2  0x00007fd90a0902f3 n/a (_socket.cpython-36m-x86_64-linux-gnu.so)
> #3  0x00007fd90d42891f _PyCFunction_FastCallDict (libpython3.6m.so.1.0)
> #4  0x00007fd90d437a0f n/a (libpython3.6m.so.1.0)
> #5  0x00007fd90d3f3d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #6  0x00007fd90d43753a n/a (libpython3.6m.so.1.0)
> #7  0x00007fd90d437af3 n/a (libpython3.6m.so.1.0)
> #8  0x00007fd90d3f3d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #9  0x00007fd90d43753a n/a (libpython3.6m.so.1.0)
> #10 0x00007fd90d437af3 n/a (libpython3.6m.so.1.0)
> #11 0x00007fd90d3f3d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #12 0x00007fd90d436f9a _PyFunction_FastCallDict (libpython3.6m.so.1.0)
> #13 0x00007fd90d48ca4e _PyObject_FastCallDict (libpython3.6m.so.1.0)
> #14 0x00007fd90d48d852 _PyObject_Call_Prepend (libpython3.6m.so.1.0)
> #15 0x00007fd90d48d91b PyObject_Call (libpython3.6m.so.1.0)
> #16 0x00007fd90d3f557e _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #17 0x00007fd90d43753a n/a (libpython3.6m.so.1.0)
> #18 0x00007fd90d437af3 n/a (libpython3.6m.so.1.0)
> #19 0x00007fd90d3f3d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #20 0x00007fd90d43753a n/a (libpython3.6m.so.1.0)
> #21 0x00007fd90d437af3 n/a (libpython3.6m.so.1.0)
> #22 0x00007fd90d3f3d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #23 0x00007fd90d436f9a _PyFunction_FastCallDict (libpython3.6m.so.1.0)
> #24 0x00007fd90d48ca4e _PyObject_FastCallDict (libpython3.6m.so.1.0)
> #25 0x00007fd90d48d852 _PyObject_Call_Prepend (libpython3.6m.so.1.0)
> #26 0x00007fd90d48d91b PyObject_Call (libpython3.6m.so.1.0)
> #27 0x00007fd90d4b31e2 n/a (libpython3.6m.so.1.0)
> #28 0x00007fd90dbda2e7 start_thread (libpthread.so.0)
> #29 0x00007fd90d91b54f __clone (libc.so.6)
>
> 2:
> Fatal Python error: Segmentation fault
> Stack (most recent call first):
>   File "/usr/lib/python3.6/site-packages/pyatspi/Accessibility.py", line
> 184 in <lambda>
>   File "/usr/lib/python3.6/site-packages/orca/event_manager.py", line
> 264 in _queuePrintln
>   File "/usr/lib/python3.6/site-packages/orca/event_manager.py", line
> 338 in _dequeue
>   File "/usr/lib/python3.6/site-packages/pyatspi/registry.py", line 155
> in start
>   File "/usr/lib/python3.6/site-packages/orca/orca.py", line 561 in start
>   File "/usr/lib/python3.6/site-packages/orca/orca.py", line 712 in main
>   File "/usr/bin/orca", line 269 in main
>   File "/usr/bin/orca", line 272 in <module>
> Started Process Core Dump (PID 10067/UID 0).
> Process 5153 (orca) of user 1000 dumped core.
>
> Stack trace of thread 5153:
> #0  0x00007fac6e651ea0 raise (libpthread.so.0)
> #1  0x00007fac6e651fe0 __restore_rt (libpthread.so.0)
> #2  0x00007fac69bcb376 atspi_accessible_get_parent (libatspi.so.0)
> #3  0x00007fac69bcb619 atspi_accessible_get_application (libatspi.so.0)
> #4  0x00007fac6c29b1c8 ffi_call_unix64 (libffi.so.6)
> #5  0x00007fac6c29ac2a ffi_call (libffi.so.6)
> #6  0x00007fac6cc6397c n/a (_gi.cpython-36m-x86_64-linux-gnu.so)
> #7  0x00007fac6cc65428 n/a (_gi.cpython-36m-x86_64-linux-gnu.so)
> #8  0x00007fac6cc591b9 n/a (_gi.cpython-36m-x86_64-linux-gnu.so)
> #9  0x00007fac6def984c _PyObject_FastCallDict (libpython3.6m.so.1.0)
> #10 0x00007fac6dea4b86 n/a (libpython3.6m.so.1.0)
> #11 0x00007fac6de60d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #12 0x00007fac6dea4f47 PyEval_EvalCodeEx (libpython3.6m.so.1.0)
> #13 0x00007fac6debf7d3 n/a (libpython3.6m.so.1.0)
> #14 0x00007fac6defa91b PyObject_Call (libpython3.6m.so.1.0)
> #15 0x00007fac6dec713e n/a (libpython3.6m.so.1.0)
> #16 0x00007fac6ded6e9d _PyObject_GenericGetAttrWithDict
> (libpython3.6m.so.1.0)
> #17 0x00007fac6de60df9 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #18 0x00007fac6dea3291 n/a (libpython3.6m.so.1.0)
> #19 0x00007fac6dea478a n/a (libpython3.6m.so.1.0)
> #20 0x00007fac6dea4af3 n/a (libpython3.6m.so.1.0)
> #21 0x00007fac6de61ba9 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #22 0x00007fac6dea3f9a _PyFunction_FastCallDict (libpython3.6m.so.1.0)
> #23 0x00007fac6def9a4e _PyObject_FastCallDict (libpython3.6m.so.1.0)
> #24 0x00007fac6defa852 _PyObject_Call_Prepend (libpython3.6m.so.1.0)
> #25 0x00007fac6defa91b PyObject_Call (libpython3.6m.so.1.0)
> #26 0x00007fac6cc613dc n/a (_gi.cpython-36m-x86_64-linux-gnu.so)
> #27 0x00007fac6c29afbf ffi_closure_unix64_inner (libffi.so.6)
> #28 0x00007fac6c29b330 ffi_closure_unix64 (libffi.so.6)
> #29 0x00007fac6c4e845a g_main_context_dispatch (libglib-2.0.so.0)
> #30 0x00007fac6c4e8810 n/a (libglib-2.0.so.0)
> #31 0x00007fac6c4e8b32 g_main_loop_run (libglib-2.0.so.0)
> #32 0x00007fac69bd1aac atspi_event_main (libatspi.so.0)
> #33 0x00007fac6c29b1c8 ffi_call_unix64 (libffi.so.6)
> #34 0x00007fac6c29ac2a ffi_call (libffi.so.6)
> #35 0x00007fac6cc6397c n/a (_gi.cpython-36m-x86_64-linux-gnu.so)
> #36 0x00007fac6cc65428 n/a (_gi.cpython-36m-x86_64-linux-gnu.so)
> #37 0x00007fac6def984c _PyObject_FastCallDict (libpython3.6m.so.1.0)
> #38 0x00007fac6dea4b86 n/a (libpython3.6m.so.1.0)
> #39 0x00007fac6de60d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #40 0x00007fac6dea3629 n/a (libpython3.6m.so.1.0)
> #41 0x00007fac6dea478a n/a (libpython3.6m.so.1.0)
> #42 0x00007fac6dea4af3 n/a (libpython3.6m.so.1.0)
> #43 0x00007fac6de61ba9 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #44 0x00007fac6dea453a n/a (libpython3.6m.so.1.0)
> #45 0x00007fac6dea4af3 n/a (libpython3.6m.so.1.0)
> #46 0x00007fac6de60d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #47 0x00007fac6dea2963 n/a (libpython3.6m.so.1.0)
> #48 0x00007fac6dea4af3 n/a (libpython3.6m.so.1.0)
> #49 0x00007fac6de60d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #50 0x00007fac6dea453a n/a (libpython3.6m.so.1.0)
> #51 0x00007fac6dea4af3 n/a (libpython3.6m.so.1.0)
> #52 0x00007fac6de60d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #53 0x00007fac6dea4f47 PyEval_EvalCodeEx (libpython3.6m.so.1.0)
> #54 0x00007fac6de60a5b PyEval_EvalCode (libpython3.6m.so.1.0)
> #55 0x00007fac6df29dc2 n/a (libpython3.6m.so.1.0)
> #56 0x00007fac6df2c62d PyRun_FileExFlags (libpython3.6m.so.1.0)
> #57 0x00007fac6df2c817 PyRun_SimpleFileExFlags (libpython3.6m.so.1.0)
> #58 0x00007fac6df216f1 Py_Main (libpython3.6m.so.1.0)
> #59 0x0000000000400a5d main (python3.6)
> #60 0x00007fac6e2bc511 __libc_start_main (libc.so.6)
> #61 0x0000000000400b9a _start (python3.6)
>
> Stack trace of thread 5156:
> #0  0x00007fac6e37e67d poll (libc.so.6)
> #1  0x00007fac6c4e87a6 n/a (libglib-2.0.so.0)
> #2  0x00007fac6c4e8b32 g_main_loop_run (libglib-2.0.so.0)
> #3  0x00007fac6bdc8446 n/a (libgio-2.0.so.0)
> #4  0x00007fac6c510175 n/a (libglib-2.0.so.0)
> #5  0x00007fac6e6472e7 start_thread (libpthread.so.0)
> #6  0x00007fac6e38854f __clone (libc.so.6)
>
> Stack trace of thread 5154:
> #0  0x00007fac6e37e67d poll (libc.so.6)
> #1  0x00007fac6c4e87a6 n/a (libglib-2.0.so.0)
> #2  0x00007fac6c4e88bc g_main_context_iteration (libglib-2.0.so.0)
> #3  0x00007fac6c4e8901 n/a (libglib-2.0.so.0)
> #4  0x00007fac6c510175 n/a (libglib-2.0.so.0)
> #5  0x00007fac6e6472e7 start_thread (libpthread.so.0)
> #6  0x00007fac6e38854f __clone (libc.so.6)
>
> Stack trace of thread 5155:
> #0  0x00007fac6e37e67d poll (libc.so.6)
> #1  0x00007fac6c4e87a6 n/a (libglib-2.0.so.0)
> #2  0x00007fac6c4e88bc g_main_context_iteration (libglib-2.0.so.0)
> #3  0x00007fac63bf84bd n/a (libdconfsettings.so)
> #4  0x00007fac6c510175 n/a (libglib-2.0.so.0)
> #5  0x00007fac6e6472e7 start_thread (libpthread.so.0)
> #6  0x00007fac6e38854f __clone (libc.so.6)
>
> Stack trace of thread 5176:
> #0  0x00007fac6e6512df recv (libpthread.so.0)
> #1  0x00007fac6aafbf96 n/a (_socket.cpython-36m-x86_64-linux-gnu.so)
> #2  0x00007fac6aafd2f3 n/a (_socket.cpython-36m-x86_64-linux-gnu.so)
> #3  0x00007fac6de9591f _PyCFunction_FastCallDict (libpython3.6m.so.1.0)
> #4  0x00007fac6dea4a0f n/a (libpython3.6m.so.1.0)
> #5  0x00007fac6de60d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #6  0x00007fac6dea453a n/a (libpython3.6m.so.1.0)
> #7  0x00007fac6dea4af3 n/a (libpython3.6m.so.1.0)
> #8  0x00007fac6de60d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #9  0x00007fac6dea453a n/a (libpython3.6m.so.1.0)
> #10 0x00007fac6dea4af3 n/a (libpython3.6m.so.1.0)
> #11 0x00007fac6de60d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #12 0x00007fac6dea3f9a _PyFunction_FastCallDict (libpython3.6m.so.1.0)
> #13 0x00007fac6def9a4e _PyObject_FastCallDict (libpython3.6m.so.1.0)
> #14 0x00007fac6defa852 _PyObject_Call_Prepend (libpython3.6m.so.1.0)
> #15 0x00007fac6defa91b PyObject_Call (libpython3.6m.so.1.0)
> #16 0x00007fac6de6257e _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #17 0x00007fac6dea453a n/a (libpython3.6m.so.1.0)
> #18 0x00007fac6dea4af3 n/a (libpython3.6m.so.1.0)
> #19 0x00007fac6de60d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #20 0x00007fac6dea453a n/a (libpython3.6m.so.1.0)
> #21 0x00007fac6dea4af3 n/a (libpython3.6m.so.1.0)
> #22 0x00007fac6de60d77 _PyEval_EvalFrameDefault (libpython3.6m.so.1.0)
> #23 0x00007fac6dea3f9a _PyFunction_FastCallDict (libpython3.6m.so.1.0)
> #24 0x00007fac6def9a4e _PyObject_FastCallDict (libpython3.6m.so.1.0)
> #25 0x00007fac6defa852 _PyObject_Call_Prepend (libpython3.6m.so.1.0)
> #26 0x00007fac6defa91b PyObject_Call (libpython3.6m.so.1.0)
> #27 0x00007fac6df201e2 n/a (libpython3.6m.so.1.0)
> #28 0x00007fac6e6472e7 start_thread (libpthread.so.0)
> #29 0x00007fac6e38854f __clone (libc.so.6)
>
> Also, although this does not give a crash, I often get the following:
> atspi_accessible_set_cache_mask: assertion 'accessible ==
> accessible->parent.app->root' failed
>
>
>
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> Orca wiki: https://wiki.gnome.org/Projects/Orca
> Orca documentation: https://help.gnome.org/users/orca/stable/
> GNOME Universal Access guide: https://help.gnome.org/users/gnome-help/stable/a11y.html
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