Bug #860680 “systray.py crashed with SIGSEGV” : Bugs : python-defaults package : Ubuntu

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Ron Brown (ronw-brown) wrote on 2011-09-27:

#1

BootDmesg.txt Edit (65.1 KiB, text/plain; charset="utf-8")
CupsErrorLog.txt Edit (3.2 KiB, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (1.2 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (713 bytes, text/plain; charset="utf-8")
Disassembly.txt Edit (541 bytes, text/plain; charset="utf-8")
Locale.txt Edit (327 bytes, text/plain; charset="utf-8")
Lspci.txt Edit (12.3 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (825 bytes, text/plain; charset="utf-8")
PrintingPackages.txt Edit (1.2 KiB, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (3.2 KiB, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (1.9 KiB, text/plain; charset="utf-8")
ProcMaps.txt Edit (87.4 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (3.0 KiB, text/plain; charset="utf-8")
ProcStatus.txt Edit (791 bytes, text/plain; charset="utf-8")
Registers.txt Edit (767 bytes, text/plain; charset="utf-8")
Stacktrace.txt Edit (3.2 KiB, text/plain; charset="utf-8")
ThreadStacktrace.txt Edit (5.2 KiB, text/plain; charset="utf-8")
UdevDb.txt Edit (154.5 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (318.1 KiB, text/plain; charset="utf-8")

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Apport retracing service (apport) wrote on 2011-09-27:

#2

StacktraceTop:
setup_context (registry=<synthetic pointer>, module=<synthetic pointer>, lineno=<synthetic pointer>, filename=<synthetic pointer>, stack_level=1) at ../Python/_warnings.c:449
do_warn (message="gdk_xsettings_watch_cb(): Couldn't find window to unwatch", category=<type at remote 0x29397a0>, stack_level=1) at ../Python/_warnings.c:594
PyErr_WarnEx (category=<type at remote 0x29397a0>, text=<optimized out>, stack_level=1) at ../Python/_warnings.c:720
_log_func (log_domain=<optimized out>, log_level=G_LOG_LEVEL_WARNING, message=0x2c50210 "gdk_xsettings_watch_cb(): Couldn't find window to unwatch", user_data=0x29397a0) at /build/buildd/pygobject-2-2.28.6/gobject/gobjectmodule.c:2353
?? ()

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Apport retracing service (apport) wrote on 2011-09-27: Stacktrace.txt

#3

Stacktrace.txt Edit (2.0 KiB, text/plain)

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Apport retracing service (apport) wrote on 2011-09-27: ThreadStacktrace.txt

#4

ThreadStacktrace.txt Edit (3.3 KiB, text/plain)

Changed in hplip (Ubuntu):
importance:	Undecided → Medium
tags:	removed: need-amd64-retrace

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Launchpad Janitor (janitor) wrote on 2011-09-28:

#5

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in hplip (Ubuntu):
status:	New → Confirmed

Jean-Baptiste Lallement (jibel) on 2011-09-28

visibility:

private → public

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Roger James (rogerjames99) wrote on 2014-04-25:

#6

This bug has many duplicates. It appears that systray.py will crash whenever a warning message is generated. The oither bugs report a number of different warning messages.

The following bugs are definite duplicates.

#862779
#1046036
#1046635
#1157504
#1287596
#1299676
#1299764

The following are potential duplicates

#917727
#923137
#963315

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Roger James (rogerjames99) wrote on 2014-04-25:

#7

This bug still exists on 14.04 Trusty Tahr.

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Till Kamppeter (till-kamppeter) wrote on 2014-04-25:

#8

To the HPLIP developers at HP, it seems that the do_warn() function used by systray is generally broken, causing a segmentation fault whenever it is called. Can you have a look into this? Thanks.

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Roger James (rogerjames99) wrote on 2014-04-26:

#9

This looks like a bug in the python interpreter.

The routine setup_context in Python/_warnings.c looks like this.

setup_context(Py_ssize_t stack_level, PyObject **filename, int *lineno,
PyObject **module, PyObject **registry)
{
PyObject *globals;

/* Setup globals and lineno. */
PyFrameObject *f = PyThreadState_GET()->frame;

PyThreadState_GET is a macro defined in Include/pystate.h

#ifdef Py_DEBUG
#define PyThreadState_GET() PyThreadState_Get()
#else
#define PyThreadState_GET() (_PyThreadState_Current)
#endif

Py_DEBUG does not appear to have been defined when this version of python was compiled. So the contents of _PyThreadState_Current are used as a pointer. Unfortunately it looks like this routine can be called when it is set to NULL. I put a break on the do_warn function in the interpreter and ran hp-systray -g -x. The first time it triggers (_PyThreadState_Current is non NULL and all is OK. The second time it is NULL and the crash occurs. This may be because this warning is being triggered deep in the initialisation code of a python object.

I do not know whether this is a python bug or an hplip bug. Maybe a python expert can comment on this.

P.S. the python assembly code is heavily inline optimised by gcc so is very hard to relate to real line numbers.

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Till Kamppeter (till-kamppeter) wrote on 2014-04-26:

#10

Added python-defaults task so that the Python experts will see this bug report.

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Matthias Klose (doko) wrote on 2014-04-27:

#11

does this work with the python-dbg interpreter?

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Matthias Klose (doko) wrote on 2014-04-27:

#12

another candidate for the real issue are the pygobject bindings.

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Roger James (rogerjames99) wrote on 2014-04-27:

#13

Download full text (16.4 KiB)

I had a quick try with python-dbg but got some error messages very early one in the initialisation process. I have not looked into them any further.

However I have no do a run with a hardware break point on _PyThreadState_Current. This show that it is the /usr/lib/python2.7/dist-packages/PyQt4/QtGui.so module that is causing the problem by calling PyEval_SaveThread () just before the crash. This has the affect of setting the current thread state to NULL. So this no looks like it could be a problem with the Qt4 support in Python not handling multithreading correctly. I think this is a far as I can go diagnosing this. I was hoping I could find some way of hacking a work around into hp-systray but this seems unlikely.

(gdb) ignore 1 1147
Will ignore next 1147 crossings of breakpoint 1.
(gdb) run
Starting program: /usr/bin/python /usr/bin/hp-systray -g -x
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".

HP Linux Imaging and Printing System (ver. 3.14.3)
System Tray Status Service ver. 2.0

Copyright (c) 2001-13 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.

hp-systray[3456]: debug: Locking: /home/roger/.hplip/hp-systray.lock
hp-systray[3456]: debug: Creating pipe: hpssd (5) ==> systemtray (4)
hp-systray[3456]: debug: Creating pipe: hpssd (6) ==> hpdio (4)
hp-systray[3456]: debug: Creating pipe: hpdio (8) ==> hpssd (7)
hp-systray(hpdio)[3458]: debug: PID=3458
hp-systray(hpssd)[3457]: debug: PID=3457
hp-systray(hpssd)[3457]: debug: Entering main dbus loop...
[New Thread 0xb40a9b40 (LWP 3459)]
[New Thread 0xb36ffb40 (LWP 3460)]
/usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:127: RuntimeWarning: PyOS_InputHook is not available for interactive use of PyGTK
set_interactive(1)
hp-systray(qt4)[3456]: debug: PID=3456
hp-systray(qt4)[3456]: debug: Go to here 1!
Hardware watchpoint 1: _PyThreadState_Current

Old value = (PyThreadState *) 0x835d050
New value = (PyThreadState *) 0x0
PyEval_SaveThread () at ../Python/ceval.c:340
340 if (tstate == NULL)
(gdb) bt
#0 PyEval_SaveThread () at ../Python/ceval.c:340
#1 0xb6413d58 in ?? () from /usr/lib/python2.7/dist-packages/PyQt4/QtGui.so
#2 0xb723fd86 in ?? () from /usr/lib/python2.7/dist-packages/sip.so
#3 0x08144c11 in wrap_init.25210 (self=<SystemTrayApp at remote 0xb7a664f4>,
    args=(['/usr/bin/hp-systray', '-g', '-x'],), wrapped=0xb723faa0, kwds=0x0)
    at ../Objects/typeobject.c:4748
#4 0x0814481c in wrapper_call.11136 (wp=wp@entry=0xb7285eac,
    args=args@entry=(['/usr/bin/hp-systray', '-g', '-x'],),
    kwds=kwds@entry=0x0) at ../Objects/descrobject.c:1035
#5 0x081045a9 in PyObject_Call (kw=0x0,
    arg=(['/usr/bin/hp-systray', '-g', '-x'],),
    func=<method-wrapper at remote 0xb7285eac>) at ../Objects/abstract.c:2529
#6 PyEval_CallObjectWithKeywords (
    func=func@entry=<method-wrapper at remote 0xb7285eac>,
    arg=arg@entry=(['/usr/bin/hp-systray', '-g', '-x'],), kw=kw@entry=0x0)
    at ../Python/ceval.c:3889
#7 0x0817c6ed in wrappe...

I had a quick try with python-dbg but got some error messages very early one in the initialisation process. I have not looked into them any further.

However I have no do a run with a hardware break point on _PyThreadState_Current. This show that it is the /usr/lib/python2.7/dist-packages/PyQt4/QtGui.so module that is causing the problem by calling  PyEval_SaveThread () just before the crash. This has the affect of setting the current thread state to NULL. So this no looks like it could be a problem with the Qt4 support in Python not handling multithreading correctly. I think this is a far as I can go diagnosing this. I was hoping I could find some way of hacking a work around into hp-systray but this seems unlikely.

(gdb) ignore 1 1147
Will ignore next 1147 crossings of breakpoint 1.
(gdb) run
Starting program: /usr/bin/python /usr/bin/hp-systray -g -x
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".

HP Linux Imaging and Printing System (ver. 3.14.3)
System Tray Status Service ver. 2.0

Copyright (c) 2001-13 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.

hp-systray[3456]: debug: Locking: /home/roger/.hplip/hp-systray.lock
hp-systray[3456]: debug: Creating pipe: hpssd (5) ==> systemtray (4)
hp-systray[3456]: debug: Creating pipe: hpssd (6) ==> hpdio (4)
hp-systray[3456]: debug: Creating pipe: hpdio (8) ==> hpssd (7)
hp-systray(hpdio)[3458]: debug: PID=3458
hp-systray(hpssd)[3457]: debug: PID=3457
hp-systray(hpssd)[3457]: debug: Entering main dbus loop...
[New Thread 0xb40a9b40 (LWP 3459)]
[New Thread 0xb36ffb40 (LWP 3460)]
/usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:127: RuntimeWarning: PyOS_InputHook is not available for interactive use of PyGTK
  set_interactive(1)
hp-systray(qt4)[3456]: debug: PID=3456
hp-systray(qt4)[3456]: debug: Go to here 1!
Hardware watchpoint 1: _PyThreadState_Current

Old value = (PyThreadState *) 0x835d050
New value = (PyThreadState *) 0x0
PyEval_SaveThread () at ../Python/ceval.c:340
340	    if (tstate == NULL)
(gdb) bt
#0  PyEval_SaveThread () at ../Python/ceval.c:340
#1  0xb6413d58 in ?? () from /usr/lib/python2.7/dist-packages/PyQt4/QtGui.so
#2  0xb723fd86 in ?? () from /usr/lib/python2.7/dist-packages/sip.so
#3  0x08144c11 in wrap_init.25210 (self=<SystemTrayApp at remote 0xb7a664f4>, 
    args=(['/usr/bin/hp-systray', '-g', '-x'],), wrapped=0xb723faa0, kwds=0x0)
    at ../Objects/typeobject.c:4748
#4  0x0814481c in wrapper_call.11136 (wp=wp@entry=0xb7285eac, 
    args=args@entry=(['/usr/bin/hp-systray', '-g', '-x'],), 
    kwds=kwds@entry=0x0) at ../Objects/descrobject.c:1035
#5  0x081045a9 in PyObject_Call (kw=0x0, 
    arg=(['/usr/bin/hp-systray', '-g', '-x'],), 
    func=<method-wrapper at remote 0xb7285eac>) at ../Objects/abstract.c:2529
#6  PyEval_CallObjectWithKeywords (
    func=func@entry=<method-wrapper at remote 0xb7285eac>, 
    arg=arg@entry=(['/usr/bin/hp-systray', '-g', '-x'],), kw=kw@entry=0x0)
    at ../Python/ceval.c:3889
#7  0x0817c6ed in wrapperdescr_call.11249 (descr=0xb72922ac, 
    args=<optimised out>, kwds=0x0) at ../Objects/descrobject.c:343
#8  0x081572f5 in PyObject_Call (kw=0x0, 
    arg=(<SystemTrayApp at remote 0xb7a664f4>, ['/usr/bin/hp-systray', '-g', '-x']), func=<wrapper_descriptor at remote 0xb72922ac>)
    at ../Objects/abstract.c:2529
#9  do_call (nk=<optimised out>, na=<optimised out>, pp_stack=0xbfffea1c, 
---Type <return> to continue, or q <return> to quit---
    func=<wrapper_descriptor at remote 0xb72922ac>) at ../Python/ceval.c:4238
#10 call_function (oparg=<optimised out>, pp_stack=0xbfffea1c)
    at ../Python/ceval.c:4043
#11 PyEval_EvalFrameEx (
    f=f@entry=Frame 0xb421731c, for file /usr/share/hplip/ui4/systemtray.py, line 301, in __init__ (self=<SystemTrayApp at remote 0xb7a664f4>, args=['/usr/bin/hp-systray', '-g', '-x'], read_pipe=4), throwflag=throwflag@entry=0)
    at ../Python/ceval.c:2666
#12 0x080c7212 in PyEval_EvalCodeEx (closure=<optimised out>, defcount=0, 
    defs=0x0, kwcount=<optimised out>, kws=<optimised out>, 
    argcount=<optimised out>, args=<optimised out>, locals=0x0, 
    globals=<optimised out>, co=<optimised out>) at ../Python/ceval.c:3252
#13 function_call.15346 (func=func@entry=<function at remote 0xb421841c>, 
    arg=arg@entry=(<SystemTrayApp at remote 0xb7a664f4>, ['/usr/bin/hp-systray', '-g', '-x'], 4), kw=kw@entry=0x0) at ../Objects/funcobject.c:526
#14 0x08114a22 in PyObject_Call (kw=0x0, 
    arg=(<SystemTrayApp at remote 0xb7a664f4>, ['/usr/bin/hp-systray', '-g', '-x'], 4), func=<function at remote 0xb421841c>) at ../Objects/abstract.c:2529
#15 instancemethod_call.8775 (func=<function at remote 0xb421841c>, 
    func@entry=<instancemethod at remote 0xb76e2824>, 
    arg=(<SystemTrayApp at remote 0xb7a664f4>, ['/usr/bin/hp-systray', '-g', '-x'], 4), arg@entry=(['/usr/bin/hp-systray', '-g', '-x'], 4), kw=kw@entry=0x0)
    at ../Objects/classobject.c:2602
---Type <return> to continue, or q <return> to quit---
#16 0x08114362 in PyObject_Call (kw=0x0, 
    arg=(['/usr/bin/hp-systray', '-g', '-x'], 4), 
    func=<instancemethod at remote 0xb76e2824>) at ../Objects/abstract.c:2529
#17 slot_tp_init.25855 (self=self@entry=<SystemTrayApp at remote 0xb7a664f4>, 
    args=args@entry=(['/usr/bin/hp-systray', '-g', '-x'], 4), 
    kwds=kwds@entry=0x0) at ../Objects/typeobject.c:5692
#18 0x0814415f in type_call.25519 (type=<optimised out>, 
    args=(['/usr/bin/hp-systray', '-g', '-x'], 4), kwds=0x0)
    at ../Objects/typeobject.c:745
#19 0x081572f5 in PyObject_Call (kw=0x0, 
    arg=(['/usr/bin/hp-systray', '-g', '-x'], 4), 
    func=<PyQt4.QtCore.pyqtWrapperType at remote 0xb505fd84>)
    at ../Objects/abstract.c:2529
#20 do_call (nk=<optimised out>, na=<optimised out>, pp_stack=0xbfffee0c, 
    func=<PyQt4.QtCore.pyqtWrapperType at remote 0xb505fd84>)
    at ../Python/ceval.c:4238
#21 call_function (oparg=<optimised out>, pp_stack=0xbfffee0c)
    at ../Python/ceval.c:4043
#22 PyEval_EvalFrameEx (
    f=f@entry=Frame 0xb75ae4ac, for file /usr/share/hplip/ui4/systemtray.py, line 817, in run (read_pipe=4), throwflag=throwflag@entry=0)
    at ../Python/ceval.c:2666
#23 0x0815707c in fast_function (nk=<optimised out>, na=<optimised out>, n=1, 
---Type <return> to continue, or q <return> to quit---
    pp_stack=0xbfffeedc, func=<function at remote 0xb42183e4>)
    at ../Python/ceval.c:4106
#24 call_function (oparg=<optimised out>, pp_stack=0xbfffeedc)
    at ../Python/ceval.c:4041
#25 PyEval_EvalFrameEx (
    f=f@entry=Frame 0xb7cf175c, for file /usr/bin/hp-systray, line 114, in <module> (), throwflag=throwflag@entry=0) at ../Python/ceval.c:2666
#26 0x081a2543 in PyEval_EvalCodeEx (closure=0x0, defcount=0, defs=0x0, 
    kwcount=0, kws=0x0, argcount=0, args=0x0, 
    locals={'STATUS_TYPE_PML_AND_PJL': 9, 'STATUS_PRINTER_HARD_ERROR': 1018, 'EVENT_ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 5034, 'FAX_TYPE_LEDM': 6, 'STATUS_PRINTER_CANCELING': 1005, 'STATUS_PRINTER_TRAY_2_OUT_OF_PAPER': 1038, 'IO_MODE_DOT4': 3, 'CLEAN_TYPE_PCL': 1, 'PLUGIN_REASON_NONE': 0, 'COPY_TYPE_SCAN_TO_PRINT': 2, 'STATUS_TYPE_LEDM': 10, 'PLUGIN_REASON_FASTER_PRINTING': 2, 'AGENT_KIND_NONE': 0, 'QUEUES_CONFIG_ERROR': 1, 'MODEL_TYPE2_DESKJET_AIO': 2, 'PLUGIN_FILES_CORRUPTED': '-2', 'STATUS_PRINTER_MEDIA_SIZE_MISMATCH': 1023, 'UserConfig': <type at remote 0xb7a53d14>, 'ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 34, 'SUPPORT_RELEASED': 1, 'STATUS_PRINTER_LOW_CYAN_TONER': 1604, 'AGENT_TYPE_GGK': 10, 'MODEL_TYPE2_OFFICEJET': 4, 'ALIGN_TYPE_9XX': 3, 'PLUGIN_REASON_UI_FEATURES': 32768, 'SYSTRAY_MESSAGES_SHOW_NONE': 3, 'IO_SUPPORT_USB': 2, 'EVENT_START_PRINT_JOB': 500, 'AGENT_TYPE_BLACK_B8800': 39, 'DEVICE_STATE_NOT_FOUND': -1, 'STATUS_TYPE_LJ_XML': 6, 'STATUS_PRINTER_DRY_WAIT_TIME': 1007, 'JOB_STORAGE_TYPE_OFF': 0, 'PC...(truncated), locals@entry=<code at remote 0xb7d00b18>, 
---Type <return> to continue, or q <return> to quit---
    globals={'STATUS_TYPE_PML_AND_PJL': 9, 'STATUS_PRINTER_HARD_ERROR': 1018, 'EVENT_ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 5034, 'FAX_TYPE_LEDM': 6, 'STATUS_PRINTER_CANCELING': 1005, 'STATUS_PRINTER_TRAY_2_OUT_OF_PAPER': 1038, 'IO_MODE_DOT4': 3, 'CLEAN_TYPE_PCL': 1, 'PLUGIN_REASON_NONE': 0, 'COPY_TYPE_SCAN_TO_PRINT': 2, 'STATUS_TYPE_LEDM': 10, 'PLUGIN_REASON_FASTER_PRINTING': 2, 'AGENT_KIND_NONE': 0, 'QUEUES_CONFIG_ERROR': 1, 'MODEL_TYPE2_DESKJET_AIO': 2, 'PLUGIN_FILES_CORRUPTED': '-2', 'STATUS_PRINTER_MEDIA_SIZE_MISMATCH': 1023, 'UserConfig': <type at remote 0xb7a53d14>, 'ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 34, 'SUPPORT_RELEASED': 1, 'STATUS_PRINTER_LOW_CYAN_TONER': 1604, 'AGENT_TYPE_GGK': 10, 'MODEL_TYPE2_OFFICEJET': 4, 'ALIGN_TYPE_9XX': 3, 'PLUGIN_REASON_UI_FEATURES': 32768, 'SYSTRAY_MESSAGES_SHOW_NONE': 3, 'IO_SUPPORT_USB': 2, 'EVENT_START_PRINT_JOB': 500, 'AGENT_TYPE_BLACK_B8800': 39, 'DEVICE_STATE_NOT_FOUND': -1, 'STATUS_TYPE_LJ_XML': 6, 'STATUS_PRINTER_DRY_WAIT_TIME': 1007, 'JOB_STORAGE_TYPE_OFF': 0, 'PC...(truncated), co=0xb7d00b18) at ../Python/ceval.c:3252
#27 PyEval_EvalCode (co=co@entry=0xb7d00b18, 
    globals=globals@entry={'STATUS_TYPE_PML_AND_PJL': 9, 'STATUS_PRINTER_HARD_ERROR': 1018, 'EVENT_ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 5034, 'FAX_TYPE_LEDM': 6, 'STATUS_PRINTER_CANCELING': 1005, 'STATUS_PRINTER_TRAY_2_OUT_OF_PAPER': 1038, 'IO_MODE_DOT4': 3, 'CLEAN_TYPE_PCL': 1, 'PLUGIN_REASON_NONE': 0, 'COPY_TYPE_SCAN_TO_PRINT': 2, 'STATUS_TYPE_LEDM': 10, 'PLUGIN_REASON_FASTER_PRINTING': 2, 'AGENT_KIND_NONE': 0, 'QUEUES_CONFIG_ERROR': 1, 'MODEL_TYPE2_DESKJET_AIO': 2, 'PLUGIN_FILES_CORRUPTED': '-2', 'STATUS_PRINTER_MEDIA_SIZE_MISMATCH': 1023, 'UserConfig': <type at remote 0xb7a53d14>, 'ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': ---Type <return> to continue, or q <return> to quit---
34, 'SUPPORT_RELEASED': 1, 'STATUS_PRINTER_LOW_CYAN_TONER': 1604, 'AGENT_TYPE_GGK': 10, 'MODEL_TYPE2_OFFICEJET': 4, 'ALIGN_TYPE_9XX': 3, 'PLUGIN_REASON_UI_FEATURES': 32768, 'SYSTRAY_MESSAGES_SHOW_NONE': 3, 'IO_SUPPORT_USB': 2, 'EVENT_START_PRINT_JOB': 500, 'AGENT_TYPE_BLACK_B8800': 39, 'DEVICE_STATE_NOT_FOUND': -1, 'STATUS_TYPE_LJ_XML': 6, 'STATUS_PRINTER_DRY_WAIT_TIME': 1007, 'JOB_STORAGE_TYPE_OFF': 0, 'PC...(truncated), 
    locals=locals@entry={'STATUS_TYPE_PML_AND_PJL': 9, 'STATUS_PRINTER_HARD_ERROR': 1018, 'EVENT_ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 5034, 'FAX_TYPE_LEDM': 6, 'STATUS_PRINTER_CANCELING': 1005, 'STATUS_PRINTER_TRAY_2_OUT_OF_PAPER': 1038, 'IO_MODE_DOT4': 3, 'CLEAN_TYPE_PCL': 1, 'PLUGIN_REASON_NONE': 0, 'COPY_TYPE_SCAN_TO_PRINT': 2, 'STATUS_TYPE_LEDM': 10, 'PLUGIN_REASON_FASTER_PRINTING': 2, 'AGENT_KIND_NONE': 0, 'QUEUES_CONFIG_ERROR': 1, 'MODEL_TYPE2_DESKJET_AIO': 2, 'PLUGIN_FILES_CORRUPTED': '-2', 'STATUS_PRINTER_MEDIA_SIZE_MISMATCH': 1023, 'UserConfig': <type at remote 0xb7a53d14>, 'ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 34, 'SUPPORT_RELEASED': 1, 'STATUS_PRINTER_LOW_CYAN_TONER': 1604, 'AGENT_TYPE_GGK': 10, 'MODEL_TYPE2_OFFICEJET': 4, 'ALIGN_TYPE_9XX': 3, 'PLUGIN_REASON_UI_FEATURES': 32768, 'SYSTRAY_MESSAGES_SHOW_NONE': 3, 'IO_SUPPORT_USB': 2, 'EVENT_START_PRINT_JOB': 500, 'AGENT_TYPE_BLACK_B8800': 39, 'DEVICE_STATE_NOT_FOUND': -1, 'STATUS_TYPE_LJ_XML': 6, 'STATUS_PRINTER_DRY_WAIT_TIME': 1007, 'JOB_STORAGE_TYPE_OFF': 0, 'PC...(truncated)) at ../Python/ceval.c:667
#28 0x080ac4a2 in run_mod.42624 (mod=<optimised out>, 
    filename=<optimised out>, 
    globals={'STATUS_TYPE_PML_AND_PJL': 9, 'STATUS_PRINTER_HARD_ERROR': 1018, 'E---Type <return> to continue, or q <return> to quit---
VENT_ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 5034, 'FAX_TYPE_LEDM': 6, 'STATUS_PRINTER_CANCELING': 1005, 'STATUS_PRINTER_TRAY_2_OUT_OF_PAPER': 1038, 'IO_MODE_DOT4': 3, 'CLEAN_TYPE_PCL': 1, 'PLUGIN_REASON_NONE': 0, 'COPY_TYPE_SCAN_TO_PRINT': 2, 'STATUS_TYPE_LEDM': 10, 'PLUGIN_REASON_FASTER_PRINTING': 2, 'AGENT_KIND_NONE': 0, 'QUEUES_CONFIG_ERROR': 1, 'MODEL_TYPE2_DESKJET_AIO': 2, 'PLUGIN_FILES_CORRUPTED': '-2', 'STATUS_PRINTER_MEDIA_SIZE_MISMATCH': 1023, 'UserConfig': <type at remote 0xb7a53d14>, 'ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 34, 'SUPPORT_RELEASED': 1, 'STATUS_PRINTER_LOW_CYAN_TONER': 1604, 'AGENT_TYPE_GGK': 10, 'MODEL_TYPE2_OFFICEJET': 4, 'ALIGN_TYPE_9XX': 3, 'PLUGIN_REASON_UI_FEATURES': 32768, 'SYSTRAY_MESSAGES_SHOW_NONE': 3, 'IO_SUPPORT_USB': 2, 'EVENT_START_PRINT_JOB': 500, 'AGENT_TYPE_BLACK_B8800': 39, 'DEVICE_STATE_NOT_FOUND': -1, 'STATUS_TYPE_LJ_XML': 6, 'STATUS_PRINTER_DRY_WAIT_TIME': 1007, 'JOB_STORAGE_TYPE_OFF': 0, 'PC...(truncated), 
    locals={'STATUS_TYPE_PML_AND_PJL': 9, 'STATUS_PRINTER_HARD_ERROR': 1018, 'EVENT_ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 5034, 'FAX_TYPE_LEDM': 6, 'STATUS_PRINTER_CANCELING': 1005, 'STATUS_PRINTER_TRAY_2_OUT_OF_PAPER': 1038, 'IO_MODE_DOT4': 3, 'CLEAN_TYPE_PCL': 1, 'PLUGIN_REASON_NONE': 0, 'COPY_TYPE_SCAN_TO_PRINT': 2, 'STATUS_TYPE_LEDM': 10, 'PLUGIN_REASON_FASTER_PRINTING': 2, 'AGENT_KIND_NONE': 0, 'QUEUES_CONFIG_ERROR': 1, 'MODEL_TYPE2_DESKJET_AIO': 2, 'PLUGIN_FILES_CORRUPTED': '-2', 'STATUS_PRINTER_MEDIA_SIZE_MISMATCH': 1023, 'UserConfig': <type at remote 0xb7a53d14>, 'ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 34, 'SUPPORT_RELEASED': 1, 'STATUS_PRINTER_LOW_CYAN_TONER': 1604, 'AGENT_TYPE_GGK': 10, 'MODEL_TYPE2_OFFICEJET': 4, 'ALIGN_TYPE_9XX': 3, 'PLUGIN_REASON_UI_FEATURES': 32768, 'S---Type <return> to continue, or q <return> to quit---
YSTRAY_MESSAGES_SHOW_NONE': 3, 'IO_SUPPORT_USB': 2, 'EVENT_START_PRINT_JOB': 500, 'AGENT_TYPE_BLACK_B8800': 39, 'DEVICE_STATE_NOT_FOUND': -1, 'STATUS_TYPE_LJ_XML': 6, 'STATUS_PRINTER_DRY_WAIT_TIME': 1007, 'JOB_STORAGE_TYPE_OFF': 0, 'PC...(truncated), flags=0xbffff05c, arena=0x83ae0b0) at ../Python/pythonrun.c:1370
#29 0x080ac82e in PyRun_FileExFlags (fp=fp@entry=0x8378730, 
    filename=filename@entry=0xbffff373 "/usr/bin/hp-systray", 
    start=start@entry=257, 
    globals=globals@entry={'STATUS_TYPE_PML_AND_PJL': 9, 'STATUS_PRINTER_HARD_ERROR': 1018, 'EVENT_ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 5034, 'FAX_TYPE_LEDM': 6, 'STATUS_PRINTER_CANCELING': 1005, 'STATUS_PRINTER_TRAY_2_OUT_OF_PAPER': 1038, 'IO_MODE_DOT4': 3, 'CLEAN_TYPE_PCL': 1, 'PLUGIN_REASON_NONE': 0, 'COPY_TYPE_SCAN_TO_PRINT': 2, 'STATUS_TYPE_LEDM': 10, 'PLUGIN_REASON_FASTER_PRINTING': 2, 'AGENT_KIND_NONE': 0, 'QUEUES_CONFIG_ERROR': 1, 'MODEL_TYPE2_DESKJET_AIO': 2, 'PLUGIN_FILES_CORRUPTED': '-2', 'STATUS_PRINTER_MEDIA_SIZE_MISMATCH': 1023, 'UserConfig': <type at remote 0xb7a53d14>, 'ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 34, 'SUPPORT_RELEASED': 1, 'STATUS_PRINTER_LOW_CYAN_TONER': 1604, 'AGENT_TYPE_GGK': 10, 'MODEL_TYPE2_OFFICEJET': 4, 'ALIGN_TYPE_9XX': 3, 'PLUGIN_REASON_UI_FEATURES': 32768, 'SYSTRAY_MESSAGES_SHOW_NONE': 3, 'IO_SUPPORT_USB': 2, 'EVENT_START_PRINT_JOB': 500, 'AGENT_TYPE_BLACK_B8800': 39, 'DEVICE_STATE_NOT_FOUND': -1, 'STATUS_TYPE_LJ_XML': 6, 'STATUS_PRINTER_DRY_WAIT_TIME': 1007, 'JOB_STORAGE_TYPE_OFF': 0, 'PC...(truncated), 
    locals=locals@entry={'STATUS_TYPE_PML_AND_PJL': 9, 'STATUS_PRINTER_HARD_ERROR': 1018, 'EVENT_ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 5034, 'FAX_TYPE_LEDM'---Type <return> to continue, or q <return> to quit---
: 6, 'STATUS_PRINTER_CANCELING': 1005, 'STATUS_PRINTER_TRAY_2_OUT_OF_PAPER': 1038, 'IO_MODE_DOT4': 3, 'CLEAN_TYPE_PCL': 1, 'PLUGIN_REASON_NONE': 0, 'COPY_TYPE_SCAN_TO_PRINT': 2, 'STATUS_TYPE_LEDM': 10, 'PLUGIN_REASON_FASTER_PRINTING': 2, 'AGENT_KIND_NONE': 0, 'QUEUES_CONFIG_ERROR': 1, 'MODEL_TYPE2_DESKJET_AIO': 2, 'PLUGIN_FILES_CORRUPTED': '-2', 'STATUS_PRINTER_MEDIA_SIZE_MISMATCH': 1023, 'UserConfig': <type at remote 0xb7a53d14>, 'ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 34, 'SUPPORT_RELEASED': 1, 'STATUS_PRINTER_LOW_CYAN_TONER': 1604, 'AGENT_TYPE_GGK': 10, 'MODEL_TYPE2_OFFICEJET': 4, 'ALIGN_TYPE_9XX': 3, 'PLUGIN_REASON_UI_FEATURES': 32768, 'SYSTRAY_MESSAGES_SHOW_NONE': 3, 'IO_SUPPORT_USB': 2, 'EVENT_START_PRINT_JOB': 500, 'AGENT_TYPE_BLACK_B8800': 39, 'DEVICE_STATE_NOT_FOUND': -1, 'STATUS_TYPE_LJ_XML': 6, 'STATUS_PRINTER_DRY_WAIT_TIME': 1007, 'JOB_STORAGE_TYPE_OFF': 0, 'PC...(truncated), closeit=closeit@entry=1, flags=flags@entry=0xbffff05c)
    at ../Python/pythonrun.c:1356
#30 0x080acdfb in PyRun_SimpleFileExFlags (fp=0x8378730, 
    filename=<optimised out>, closeit=1, flags=0xbffff05c)
    at ../Python/pythonrun.c:948
#31 0x080aceee in PyRun_AnyFileExFlags (fp=fp@entry=0x8378730, 
    filename=<optimised out>, filename@entry=0xbffff373 "/usr/bin/hp-systray", 
    closeit=closeit@entry=1, flags=flags@entry=0xbffff05c)
    at ../Python/pythonrun.c:752
#32 0x080adb58 in Py_Main (argc=argc@entry=4, argv=argv@entry=0xbffff194)
    at ../Modules/main.c:640
#33 0x080adc37 in main (argc=4, argv=0xbffff194) at ../Modules/python.c:23
(gdb)

Revision history for this message

Roger James (rogerjames99) wrote on 2014-04-28:

#14

Download full text (21.0 KiB)

Here is a slighlty more informative gdb run with the python-qt4 debug symbols loaded.

You can see from this that the crash occurs because the qt4 sip code calls

Py_BEGIN_ALLOW_THREADS

This sets _PyThreadState_Current to NULL, and then

sipCpp = new sipQApplication(nargc, argv);

Somewhere in the setup of this object a call to the Python warning mechansim occurs with the trhead state still NULL.

(gdb) ignore 1 1149
Will ignore next 1149 crossings of breakpoint 1.
(gdb) run
Starting program: /usr/bin/python /usr/bin/hp-systray -g -x
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".

HP Linux Imaging and Printing System (ver. 3.14.3)
System Tray Status Service ver. 2.0

Copyright (c) 2001-13 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.

hp-systray[3194]: debug: Locking: /home/roger/.hplip/hp-systray.lock
hp-systray[3194]: debug: Creating pipe: hpssd (5) ==> systemtray (4)
hp-systray[3194]: debug: Creating pipe: hpssd (6) ==> hpdio (4)
hp-systray[3194]: debug: Creating pipe: hpdio (8) ==> hpssd (7)
hp-systray(hpdio)[3196]: debug: PID=3196
hp-systray(hpssd)[3195]: debug: PID=3195
hp-systray(hpssd)[3195]: debug: Entering main dbus loop...
[New Thread 0xb40a9b40 (LWP 3197)]
[New Thread 0xb36ffb40 (LWP 3198)]
/usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:127: RuntimeWarning: PyOS_InputHook is not available for interactive use of PyGTK
set_interactive(1)
hp-systray(qt4)[3194]: debug: PID=3194
hp-systray(qt4)[3194]: debug: Go to here 1!
Hardware watchpoint 1: _PyThreadState_Current

Old value = (PyThreadState *) 0x835d050
New value = (PyThreadState *) 0x0
PyEval_SaveThread () at ../Python/ceval.c:340
340 if (tstate == NULL)
(gdb) finish
Run till exit from #0 PyEval_SaveThread () at ../Python/ceval.c:340
init_type_QApplication (sipSelf=0xb7a664f4, sipArgs=
    (['/usr/bin/hp-systray', '-g', '-x'],), sipKwds=0x0, sipUnused=0xbfffe880,
    sipParseErr=0xbfffe88c)
    at /build/buildd/python-qt4-4.10.4+dfsg/sip/QtGui/qapplication.sip:886
886 sipCpp = new sipQApplication(nargc, argv);
Value returned is $2 = (PyThreadState *) 0x835d050
(gdb) next
885 Py_BEGIN_ALLOW_THREADS
(gdb) next
886 sipCpp = new sipQApplication(nargc, argv);
(gdb) next

Program received signal SIGSEGV, Segmentation fault.
do_warn.29441 (
    message=message@entry='/usr/lib/i386-linux-gnu/pango/1.8.0/modules/pango-basic-fc.so: cannot open shared object file: No such file or directory',
    category=category@entry=<type at remote 0xb43a878c>,
    stack_level=stack_level@entry=1) at ../Python/_warnings.c:594
594 if (!setup_context(stack_level, &filename, &lineno, &module, &registry))
(gdb) bt
#0 do_warn.29441 (
    message=message@entry='/usr/lib/i386-linux-gnu/pango/1.8.0/modules/pango-basic-fc.so: cannot open shared object file: No such file or directory',
    category=category@entry=<type at remote 0xb43a878c>,
    stack_level=stack_level@entry=1) at ../Python/_warnings.c:594
#1 0x081f34c...

Here is a slighlty more informative gdb run with the python-qt4 debug symbols loaded.

You can see from this that the crash occurs because the qt4 sip code calls

Py_BEGIN_ALLOW_THREADS

This sets _PyThreadState_Current to NULL, and then

sipCpp = new sipQApplication(nargc, argv);

Somewhere in the setup of this object a call to the Python warning mechansim occurs with the trhead state still NULL.

(gdb) ignore 1 1149
Will ignore next 1149 crossings of breakpoint 1.
(gdb) run
Starting program: /usr/bin/python /usr/bin/hp-systray -g -x
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".

HP Linux Imaging and Printing System (ver. 3.14.3)
System Tray Status Service ver. 2.0

Copyright (c) 2001-13 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.

hp-systray[3194]: debug: Locking: /home/roger/.hplip/hp-systray.lock
hp-systray[3194]: debug: Creating pipe: hpssd (5) ==> systemtray (4)
hp-systray[3194]: debug: Creating pipe: hpssd (6) ==> hpdio (4)
hp-systray[3194]: debug: Creating pipe: hpdio (8) ==> hpssd (7)
hp-systray(hpdio)[3196]: debug: PID=3196
hp-systray(hpssd)[3195]: debug: PID=3195
hp-systray(hpssd)[3195]: debug: Entering main dbus loop...
[New Thread 0xb40a9b40 (LWP 3197)]
[New Thread 0xb36ffb40 (LWP 3198)]
/usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:127: RuntimeWarning: PyOS_InputHook is not available for interactive use of PyGTK
  set_interactive(1)
hp-systray(qt4)[3194]: debug: PID=3194
hp-systray(qt4)[3194]: debug: Go to here 1!
Hardware watchpoint 1: _PyThreadState_Current

Old value = (PyThreadState *) 0x835d050
New value = (PyThreadState *) 0x0
PyEval_SaveThread () at ../Python/ceval.c:340
340	    if (tstate == NULL)
(gdb) finish
Run till exit from #0  PyEval_SaveThread () at ../Python/ceval.c:340
init_type_QApplication (sipSelf=0xb7a664f4, sipArgs=
    (['/usr/bin/hp-systray', '-g', '-x'],), sipKwds=0x0, sipUnused=0xbfffe880, 
    sipParseErr=0xbfffe88c)
    at /build/buildd/python-qt4-4.10.4+dfsg/sip/QtGui/qapplication.sip:886
886	            sipCpp = new sipQApplication(nargc, argv);
Value returned is $2 = (PyThreadState *) 0x835d050
(gdb) next
885	            Py_BEGIN_ALLOW_THREADS
(gdb) next
886	            sipCpp = new sipQApplication(nargc, argv);
(gdb) next

Program received signal SIGSEGV, Segmentation fault.
do_warn.29441 (
    message=message@entry='/usr/lib/i386-linux-gnu/pango/1.8.0/modules/pango-basic-fc.so: cannot open shared object file: No such file or directory', 
    category=category@entry=<type at remote 0xb43a878c>, 
    stack_level=stack_level@entry=1) at ../Python/_warnings.c:594
594	    if (!setup_context(stack_level, &filename, &lineno, &module, &registry))
(gdb) bt
#0  do_warn.29441 (
    message=message@entry='/usr/lib/i386-linux-gnu/pango/1.8.0/modules/pango-basic-fc.so: cannot open shared object file: No such file or directory', 
    category=category@entry=<type at remote 0xb43a878c>, 
    stack_level=stack_level@entry=1) at ../Python/_warnings.c:594
#1  0x081f34cf in PyErr_WarnEx (category=<type at remote 0xb43a878c>, 
    text=0x8726768 "/usr/lib/i386-linux-gnu/pango/1.8.0/modules/pango-basic-fc.so: cannot open shared object file: No such file or directory", stack_level=1)
    at ../Python/_warnings.c:720
#2  0xb4e5aaec in ?? ()
   from /usr/lib/python2.7/dist-packages/gobject/_gobject.so
#3  0xb67152f7 in g_logv () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb6715523 in g_log () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb45637d6 in ?? () from /usr/lib/i386-linux-gnu/libpango-1.0.so.0
#6  0xb535fdfe in g_type_module_use ()
   from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#7  0xb456389b in ?? () from /usr/lib/i386-linux-gnu/libpango-1.0.so.0
#8  0xb4563967 in ?? () from /usr/lib/i386-linux-gnu/libpango-1.0.so.0
#9  0xb4567e8c in ?? () from /usr/lib/i386-linux-gnu/libpango-1.0.so.0
#10 0xb456818c in ?? () from /usr/lib/i386-linux-gnu/libpango-1.0.so.0
#11 0xb45691f7 in pango_itemize_with_base_dir ()
   from /usr/lib/i386-linux-gnu/libpango-1.0.so.0
#12 0xb4570d5f in ?? () from /usr/lib/i386-linux-gnu/libpango-1.0.so.0
---Type <return> to continue, or q <return> to quit---
#13 0xb4572116 in pango_layout_get_unknown_glyphs_count ()
   from /usr/lib/i386-linux-gnu/libpango-1.0.so.0
#14 0xb481c130 in ?? () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#15 0xb481fc03 in ?? () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#16 0xb535cb43 in g_type_create_instance ()
   from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#17 0xb533f8fe in ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#18 0xb53418f1 in g_object_newv ()
   from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#19 0xb5342010 in g_object_new ()
   from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#20 0xb48219f4 in gtk_entry_new ()
   from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#21 0xb48126c5 in ?? () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#22 0xb535cb43 in g_type_create_instance ()
   from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#23 0xb533f478 in ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#24 0xb480ff32 in ?? () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#25 0xb533f8b4 in ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#26 0xb53418f1 in g_object_newv ()
   from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#27 0xb5342010 in g_object_new ()
   from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#28 0xb48127a4 in gtk_combo_box_entry_new ()
   from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#29 0xb59b3a2d in ?? () from /usr/lib/i386-linux-gnu/libQtGui.so.4
#30 0xb59aef68 in ?? () from /usr/lib/i386-linux-gnu/libQtGui.so.4
#31 0xb59951cd in QGtkStyle::QGtkStyle() ()
   from /usr/lib/i386-linux-gnu/libQtGui.so.4
#32 0xb590b58f in QStyleFactory::create(QString const&) ()
   from /usr/lib/i386-linux-gnu/libQtGui.so.4
#33 0xb55d818b in QApplication::style() ()
   from /usr/lib/i386-linux-gnu/libQtGui.so.4
#34 0xb55d85d5 in QApplicationPrivate::initialize() ()
   from /usr/lib/i386-linux-gnu/libQtGui.so.4
#35 0xb55d871c in QApplicationPrivate::construct(_XDisplay*, unsigned long, unsigned long) () from /usr/lib/i386-linux-gnu/libQtGui.so.4
#36 0xb55d89c5 in QApplication::QApplication(int&, char**, int) ()
   from /usr/lib/i386-linux-gnu/libQtGui.so.4
#37 0xb6413aa4 in sipQApplication::sipQApplication (this=0x8576868, 
    a0=@0xb66864f0: 3, a1=0x837bf18) at sipQtGuipart9.cpp:35930
#38 0xb6413d80 in init_type_QApplication (sipSelf=0xb7a664f4, 
    sipArgs=(['/usr/bin/hp-systray', '-g', '-x'],), sipKwds=0x0, 
    sipUnused=0xbfffe880, sipParseErr=0xbfffe88c)
    at /build/buildd/python-qt4-4.10.4+dfsg/sip/QtGui/qapplication.sip:886
#39 0xb723fd86 in sipSimpleWrapper_init (self=0xb7a664f4, 
---Type <return> to continue, or q <return> to quit---
    args=(['/usr/bin/hp-systray', '-g', '-x'],), kwds=0x0)
    at /build/buildd/sip4-4.15.5/siplib/siplib.c:9532
#40 0x08144c11 in wrap_init.25210 (self=<SystemTrayApp at remote 0xb7a664f4>, 
    args=(['/usr/bin/hp-systray', '-g', '-x'],), 
    wrapped=0xb723faa0 <sipSimpleWrapper_init>, kwds=0x0)
    at ../Objects/typeobject.c:4748
#41 0x0814481c in wrapper_call.11136 (wp=wp@entry=0xb7285ecc, 
    args=args@entry=(['/usr/bin/hp-systray', '-g', '-x'],), 
    kwds=kwds@entry=0x0) at ../Objects/descrobject.c:1035
#42 0x081045a9 in PyObject_Call (kw=0x0, 
    arg=(['/usr/bin/hp-systray', '-g', '-x'],), 
    func=<method-wrapper at remote 0xb7285ecc>) at ../Objects/abstract.c:2529
#43 PyEval_CallObjectWithKeywords (
    func=func@entry=<method-wrapper at remote 0xb7285ecc>, 
    arg=arg@entry=(['/usr/bin/hp-systray', '-g', '-x'],), kw=kw@entry=0x0)
    at ../Python/ceval.c:3889
#44 0x0817c6ed in wrapperdescr_call.11249 (descr=0xb72902ac, 
    args=<optimised out>, kwds=0x0) at ../Objects/descrobject.c:343
#45 0x081572f5 in PyObject_Call (kw=0x0, 
    arg=(<SystemTrayApp at remote 0xb7a664f4>, ['/usr/bin/hp-systray', '-g', '-x']), func=<wrapper_descriptor at remote 0xb72902ac>)
    at ../Objects/abstract.c:2529
#46 do_call (nk=<optimised out>, na=<optimised out>, pp_stack=0xbfffea2c, 
---Type <return> to continue, or q <return> to quit---
    func=<wrapper_descriptor at remote 0xb72902ac>) at ../Python/ceval.c:4238
#47 call_function (oparg=<optimised out>, pp_stack=0xbfffea2c)
    at ../Python/ceval.c:4043
#48 PyEval_EvalFrameEx (
    f=f@entry=Frame 0xb421731c, for file /usr/share/hplip/ui4/systemtray.py, line 301, in __init__ (self=<SystemTrayApp at remote 0xb7a664f4>, args=['/usr/bin/hp-systray', '-g', '-x'], read_pipe=4), throwflag=throwflag@entry=0)
    at ../Python/ceval.c:2666
#49 0x080c7212 in PyEval_EvalCodeEx (closure=<optimised out>, defcount=0, 
    defs=0x0, kwcount=<optimised out>, kws=<optimised out>, 
    argcount=<optimised out>, args=<optimised out>, locals=0x0, 
    globals=<optimised out>, co=<optimised out>) at ../Python/ceval.c:3252
#50 function_call.15346 (func=func@entry=<function at remote 0xb42193e4>, 
    arg=arg@entry=(<SystemTrayApp at remote 0xb7a664f4>, ['/usr/bin/hp-systray', '-g', '-x'], 4), kw=kw@entry=0x0) at ../Objects/funcobject.c:526
#51 0x08114a22 in PyObject_Call (kw=0x0, 
    arg=(<SystemTrayApp at remote 0xb7a664f4>, ['/usr/bin/hp-systray', '-g', '-x'], 4), func=<function at remote 0xb42193e4>) at ../Objects/abstract.c:2529
#52 instancemethod_call.8775 (func=<function at remote 0xb42193e4>, 
    func@entry=<instancemethod at remote 0xb76e2824>, 
    arg=(<SystemTrayApp at remote 0xb7a664f4>, ['/usr/bin/hp-systray', '-g', '-x'], 4), arg@entry=(['/usr/bin/hp-systray', '-g', '-x'], 4), kw=kw@entry=0x0)
    at ../Objects/classobject.c:2602
---Type <return> to continue, or q <return> to quit---
#53 0x08114362 in PyObject_Call (kw=0x0, 
    arg=(['/usr/bin/hp-systray', '-g', '-x'], 4), 
    func=<instancemethod at remote 0xb76e2824>) at ../Objects/abstract.c:2529
#54 slot_tp_init.25855 (self=self@entry=<SystemTrayApp at remote 0xb7a664f4>, 
    args=args@entry=(['/usr/bin/hp-systray', '-g', '-x'], 4), 
    kwds=kwds@entry=0x0) at ../Objects/typeobject.c:5692
#55 0x0814415f in type_call.25519 (type=<optimised out>, 
    args=(['/usr/bin/hp-systray', '-g', '-x'], 4), kwds=0x0)
    at ../Objects/typeobject.c:745
#56 0x081572f5 in PyObject_Call (kw=0x0, 
    arg=(['/usr/bin/hp-systray', '-g', '-x'], 4), 
    func=<PyQt4.QtCore.pyqtWrapperType at remote 0xb505fd84>)
    at ../Objects/abstract.c:2529
#57 do_call (nk=<optimised out>, na=<optimised out>, pp_stack=0xbfffee1c, 
    func=<PyQt4.QtCore.pyqtWrapperType at remote 0xb505fd84>)
    at ../Python/ceval.c:4238
#58 call_function (oparg=<optimised out>, pp_stack=0xbfffee1c)
    at ../Python/ceval.c:4043
#59 PyEval_EvalFrameEx (
    f=f@entry=Frame 0xb75ae4ac, for file /usr/share/hplip/ui4/systemtray.py, line 817, in run (read_pipe=4), throwflag=throwflag@entry=0)
    at ../Python/ceval.c:2666
#60 0x0815707c in fast_function (nk=<optimised out>, na=<optimised out>, n=1, 
---Type <return> to continue, or q <return> to quit---
    pp_stack=0xbfffeeec, func=<function at remote 0xb42193ac>)
    at ../Python/ceval.c:4106
#61 call_function (oparg=<optimised out>, pp_stack=0xbfffeeec)
    at ../Python/ceval.c:4041
#62 PyEval_EvalFrameEx (
    f=f@entry=Frame 0xb7cf175c, for file /usr/bin/hp-systray, line 114, in <module> (), throwflag=throwflag@entry=0) at ../Python/ceval.c:2666
#63 0x081a2543 in PyEval_EvalCodeEx (closure=0x0, defcount=0, defs=0x0, 
    kwcount=0, kws=0x0, argcount=0, args=0x0, 
    locals={'STATUS_TYPE_PML_AND_PJL': 9, 'STATUS_PRINTER_HARD_ERROR': 1018, 'EVENT_ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 5034, 'FAX_TYPE_LEDM': 6, 'STATUS_PRINTER_CANCELING': 1005, 'STATUS_PRINTER_TRAY_2_OUT_OF_PAPER': 1038, 'IO_MODE_DOT4': 3, 'CLEAN_TYPE_PCL': 1, 'PLUGIN_REASON_NONE': 0, 'COPY_TYPE_SCAN_TO_PRINT': 2, 'STATUS_TYPE_LEDM': 10, 'PLUGIN_REASON_FASTER_PRINTING': 2, 'AGENT_KIND_NONE': 0, 'QUEUES_CONFIG_ERROR': 1, 'MODEL_TYPE2_DESKJET_AIO': 2, 'PLUGIN_FILES_CORRUPTED': '-2', 'STATUS_PRINTER_MEDIA_SIZE_MISMATCH': 1023, 'UserConfig': <type at remote 0xb7a53d14>, 'ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 34, 'SUPPORT_RELEASED': 1, 'STATUS_PRINTER_LOW_CYAN_TONER': 1604, 'AGENT_TYPE_GGK': 10, 'MODEL_TYPE2_OFFICEJET': 4, 'ALIGN_TYPE_9XX': 3, 'PLUGIN_REASON_UI_FEATURES': 32768, 'SYSTRAY_MESSAGES_SHOW_NONE': 3, 'IO_SUPPORT_USB': 2, 'EVENT_START_PRINT_JOB': 500, 'AGENT_TYPE_BLACK_B8800': 39, 'DEVICE_STATE_NOT_FOUND': -1, 'STATUS_TYPE_LJ_XML': 6, 'STATUS_PRINTER_DRY_WAIT_TIME': 1007, 'JOB_STORAGE_TYPE_OFF': 0, 'PC...(truncated), locals@entry=<code at remote 0xb7d00b18>, 
---Type <return> to continue, or q <return> to quit---
    globals={'STATUS_TYPE_PML_AND_PJL': 9, 'STATUS_PRINTER_HARD_ERROR': 1018, 'EVENT_ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 5034, 'FAX_TYPE_LEDM': 6, 'STATUS_PRINTER_CANCELING': 1005, 'STATUS_PRINTER_TRAY_2_OUT_OF_PAPER': 1038, 'IO_MODE_DOT4': 3, 'CLEAN_TYPE_PCL': 1, 'PLUGIN_REASON_NONE': 0, 'COPY_TYPE_SCAN_TO_PRINT': 2, 'STATUS_TYPE_LEDM': 10, 'PLUGIN_REASON_FASTER_PRINTING': 2, 'AGENT_KIND_NONE': 0, 'QUEUES_CONFIG_ERROR': 1, 'MODEL_TYPE2_DESKJET_AIO': 2, 'PLUGIN_FILES_CORRUPTED': '-2', 'STATUS_PRINTER_MEDIA_SIZE_MISMATCH': 1023, 'UserConfig': <type at remote 0xb7a53d14>, 'ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 34, 'SUPPORT_RELEASED': 1, 'STATUS_PRINTER_LOW_CYAN_TONER': 1604, 'AGENT_TYPE_GGK': 10, 'MODEL_TYPE2_OFFICEJET': 4, 'ALIGN_TYPE_9XX': 3, 'PLUGIN_REASON_UI_FEATURES': 32768, 'SYSTRAY_MESSAGES_SHOW_NONE': 3, 'IO_SUPPORT_USB': 2, 'EVENT_START_PRINT_JOB': 500, 'AGENT_TYPE_BLACK_B8800': 39, 'DEVICE_STATE_NOT_FOUND': -1, 'STATUS_TYPE_LJ_XML': 6, 'STATUS_PRINTER_DRY_WAIT_TIME': 1007, 'JOB_STORAGE_TYPE_OFF': 0, 'PC...(truncated), co=0xb7d00b18) at ../Python/ceval.c:3252
#64 PyEval_EvalCode (co=co@entry=0xb7d00b18, 
    globals=globals@entry={'STATUS_TYPE_PML_AND_PJL': 9, 'STATUS_PRINTER_HARD_ERROR': 1018, 'EVENT_ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 5034, 'FAX_TYPE_LEDM': 6, 'STATUS_PRINTER_CANCELING': 1005, 'STATUS_PRINTER_TRAY_2_OUT_OF_PAPER': 1038, 'IO_MODE_DOT4': 3, 'CLEAN_TYPE_PCL': 1, 'PLUGIN_REASON_NONE': 0, 'COPY_TYPE_SCAN_TO_PRINT': 2, 'STATUS_TYPE_LEDM': 10, 'PLUGIN_REASON_FASTER_PRINTING': 2, 'AGENT_KIND_NONE': 0, 'QUEUES_CONFIG_ERROR': 1, 'MODEL_TYPE2_DESKJET_AIO': 2, 'PLUGIN_FILES_CORRUPTED': '-2', 'STATUS_PRINTER_MEDIA_SIZE_MISMATCH': 1023, 'UserConfig': <type at remote 0xb7a53d14>, 'ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': ---Type <return> to continue, or q <return> to quit---
34, 'SUPPORT_RELEASED': 1, 'STATUS_PRINTER_LOW_CYAN_TONER': 1604, 'AGENT_TYPE_GGK': 10, 'MODEL_TYPE2_OFFICEJET': 4, 'ALIGN_TYPE_9XX': 3, 'PLUGIN_REASON_UI_FEATURES': 32768, 'SYSTRAY_MESSAGES_SHOW_NONE': 3, 'IO_SUPPORT_USB': 2, 'EVENT_START_PRINT_JOB': 500, 'AGENT_TYPE_BLACK_B8800': 39, 'DEVICE_STATE_NOT_FOUND': -1, 'STATUS_TYPE_LJ_XML': 6, 'STATUS_PRINTER_DRY_WAIT_TIME': 1007, 'JOB_STORAGE_TYPE_OFF': 0, 'PC...(truncated), 
    locals=locals@entry={'STATUS_TYPE_PML_AND_PJL': 9, 'STATUS_PRINTER_HARD_ERROR': 1018, 'EVENT_ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 5034, 'FAX_TYPE_LEDM': 6, 'STATUS_PRINTER_CANCELING': 1005, 'STATUS_PRINTER_TRAY_2_OUT_OF_PAPER': 1038, 'IO_MODE_DOT4': 3, 'CLEAN_TYPE_PCL': 1, 'PLUGIN_REASON_NONE': 0, 'COPY_TYPE_SCAN_TO_PRINT': 2, 'STATUS_TYPE_LEDM': 10, 'PLUGIN_REASON_FASTER_PRINTING': 2, 'AGENT_KIND_NONE': 0, 'QUEUES_CONFIG_ERROR': 1, 'MODEL_TYPE2_DESKJET_AIO': 2, 'PLUGIN_FILES_CORRUPTED': '-2', 'STATUS_PRINTER_MEDIA_SIZE_MISMATCH': 1023, 'UserConfig': <type at remote 0xb7a53d14>, 'ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 34, 'SUPPORT_RELEASED': 1, 'STATUS_PRINTER_LOW_CYAN_TONER': 1604, 'AGENT_TYPE_GGK': 10, 'MODEL_TYPE2_OFFICEJET': 4, 'ALIGN_TYPE_9XX': 3, 'PLUGIN_REASON_UI_FEATURES': 32768, 'SYSTRAY_MESSAGES_SHOW_NONE': 3, 'IO_SUPPORT_USB': 2, 'EVENT_START_PRINT_JOB': 500, 'AGENT_TYPE_BLACK_B8800': 39, 'DEVICE_STATE_NOT_FOUND': -1, 'STATUS_TYPE_LJ_XML': 6, 'STATUS_PRINTER_DRY_WAIT_TIME': 1007, 'JOB_STORAGE_TYPE_OFF': 0, 'PC...(truncated)) at ../Python/ceval.c:667
#65 0x080ac4a2 in run_mod.42624 (mod=<optimised out>, 
    filename=<optimised out>, 
    globals={'STATUS_TYPE_PML_AND_PJL': 9, 'STATUS_PRINTER_HARD_ERROR': 1018, 'E---Type <return> to continue, or q <return> to quit---
VENT_ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 5034, 'FAX_TYPE_LEDM': 6, 'STATUS_PRINTER_CANCELING': 1005, 'STATUS_PRINTER_TRAY_2_OUT_OF_PAPER': 1038, 'IO_MODE_DOT4': 3, 'CLEAN_TYPE_PCL': 1, 'PLUGIN_REASON_NONE': 0, 'COPY_TYPE_SCAN_TO_PRINT': 2, 'STATUS_TYPE_LEDM': 10, 'PLUGIN_REASON_FASTER_PRINTING': 2, 'AGENT_KIND_NONE': 0, 'QUEUES_CONFIG_ERROR': 1, 'MODEL_TYPE2_DESKJET_AIO': 2, 'PLUGIN_FILES_CORRUPTED': '-2', 'STATUS_PRINTER_MEDIA_SIZE_MISMATCH': 1023, 'UserConfig': <type at remote 0xb7a53d14>, 'ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 34, 'SUPPORT_RELEASED': 1, 'STATUS_PRINTER_LOW_CYAN_TONER': 1604, 'AGENT_TYPE_GGK': 10, 'MODEL_TYPE2_OFFICEJET': 4, 'ALIGN_TYPE_9XX': 3, 'PLUGIN_REASON_UI_FEATURES': 32768, 'SYSTRAY_MESSAGES_SHOW_NONE': 3, 'IO_SUPPORT_USB': 2, 'EVENT_START_PRINT_JOB': 500, 'AGENT_TYPE_BLACK_B8800': 39, 'DEVICE_STATE_NOT_FOUND': -1, 'STATUS_TYPE_LJ_XML': 6, 'STATUS_PRINTER_DRY_WAIT_TIME': 1007, 'JOB_STORAGE_TYPE_OFF': 0, 'PC...(truncated), 
    locals={'STATUS_TYPE_PML_AND_PJL': 9, 'STATUS_PRINTER_HARD_ERROR': 1018, 'EVENT_ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 5034, 'FAX_TYPE_LEDM': 6, 'STATUS_PRINTER_CANCELING': 1005, 'STATUS_PRINTER_TRAY_2_OUT_OF_PAPER': 1038, 'IO_MODE_DOT4': 3, 'CLEAN_TYPE_PCL': 1, 'PLUGIN_REASON_NONE': 0, 'COPY_TYPE_SCAN_TO_PRINT': 2, 'STATUS_TYPE_LEDM': 10, 'PLUGIN_REASON_FASTER_PRINTING': 2, 'AGENT_KIND_NONE': 0, 'QUEUES_CONFIG_ERROR': 1, 'MODEL_TYPE2_DESKJET_AIO': 2, 'PLUGIN_FILES_CORRUPTED': '-2', 'STATUS_PRINTER_MEDIA_SIZE_MISMATCH': 1023, 'UserConfig': <type at remote 0xb7a53d14>, 'ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 34, 'SUPPORT_RELEASED': 1, 'STATUS_PRINTER_LOW_CYAN_TONER': 1604, 'AGENT_TYPE_GGK': 10, 'MODEL_TYPE2_OFFICEJET': 4, 'ALIGN_TYPE_9XX': 3, 'PLUGIN_REASON_UI_FEATURES': 32768, 'S---Type <return> to continue, or q <return> to quit---
YSTRAY_MESSAGES_SHOW_NONE': 3, 'IO_SUPPORT_USB': 2, 'EVENT_START_PRINT_JOB': 500, 'AGENT_TYPE_BLACK_B8800': 39, 'DEVICE_STATE_NOT_FOUND': -1, 'STATUS_TYPE_LJ_XML': 6, 'STATUS_PRINTER_DRY_WAIT_TIME': 1007, 'JOB_STORAGE_TYPE_OFF': 0, 'PC...(truncated), flags=0xbffff06c, arena=0x83ae0b0) at ../Python/pythonrun.c:1370
#66 0x080ac82e in PyRun_FileExFlags (fp=fp@entry=0x8378730, 
    filename=filename@entry=0xbffff38b "/usr/bin/hp-systray", 
    start=start@entry=257, 
    globals=globals@entry={'STATUS_TYPE_PML_AND_PJL': 9, 'STATUS_PRINTER_HARD_ERROR': 1018, 'EVENT_ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 5034, 'FAX_TYPE_LEDM': 6, 'STATUS_PRINTER_CANCELING': 1005, 'STATUS_PRINTER_TRAY_2_OUT_OF_PAPER': 1038, 'IO_MODE_DOT4': 3, 'CLEAN_TYPE_PCL': 1, 'PLUGIN_REASON_NONE': 0, 'COPY_TYPE_SCAN_TO_PRINT': 2, 'STATUS_TYPE_LEDM': 10, 'PLUGIN_REASON_FASTER_PRINTING': 2, 'AGENT_KIND_NONE': 0, 'QUEUES_CONFIG_ERROR': 1, 'MODEL_TYPE2_DESKJET_AIO': 2, 'PLUGIN_FILES_CORRUPTED': '-2', 'STATUS_PRINTER_MEDIA_SIZE_MISMATCH': 1023, 'UserConfig': <type at remote 0xb7a53d14>, 'ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 34, 'SUPPORT_RELEASED': 1, 'STATUS_PRINTER_LOW_CYAN_TONER': 1604, 'AGENT_TYPE_GGK': 10, 'MODEL_TYPE2_OFFICEJET': 4, 'ALIGN_TYPE_9XX': 3, 'PLUGIN_REASON_UI_FEATURES': 32768, 'SYSTRAY_MESSAGES_SHOW_NONE': 3, 'IO_SUPPORT_USB': 2, 'EVENT_START_PRINT_JOB': 500, 'AGENT_TYPE_BLACK_B8800': 39, 'DEVICE_STATE_NOT_FOUND': -1, 'STATUS_TYPE_LJ_XML': 6, 'STATUS_PRINTER_DRY_WAIT_TIME': 1007, 'JOB_STORAGE_TYPE_OFF': 0, 'PC...(truncated), 
    locals=locals@entry={'STATUS_TYPE_PML_AND_PJL': 9, 'STATUS_PRINTER_HARD_ERROR': 1018, 'EVENT_ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 5034, 'FAX_TYPE_LEDM'---Type <return> to continue, or q <return> to quit---
: 6, 'STATUS_PRINTER_CANCELING': 1005, 'STATUS_PRINTER_TRAY_2_OUT_OF_PAPER': 1038, 'IO_MODE_DOT4': 3, 'CLEAN_TYPE_PCL': 1, 'PLUGIN_REASON_NONE': 0, 'COPY_TYPE_SCAN_TO_PRINT': 2, 'STATUS_TYPE_LEDM': 10, 'PLUGIN_REASON_FASTER_PRINTING': 2, 'AGENT_KIND_NONE': 0, 'QUEUES_CONFIG_ERROR': 1, 'MODEL_TYPE2_DESKJET_AIO': 2, 'PLUGIN_FILES_CORRUPTED': '-2', 'STATUS_PRINTER_MEDIA_SIZE_MISMATCH': 1023, 'UserConfig': <type at remote 0xb7a53d14>, 'ERROR_DEVICE_DOES_NOT_SUPPORT_OPERATION': 34, 'SUPPORT_RELEASED': 1, 'STATUS_PRINTER_LOW_CYAN_TONER': 1604, 'AGENT_TYPE_GGK': 10, 'MODEL_TYPE2_OFFICEJET': 4, 'ALIGN_TYPE_9XX': 3, 'PLUGIN_REASON_UI_FEATURES': 32768, 'SYSTRAY_MESSAGES_SHOW_NONE': 3, 'IO_SUPPORT_USB': 2, 'EVENT_START_PRINT_JOB': 500, 'AGENT_TYPE_BLACK_B8800': 39, 'DEVICE_STATE_NOT_FOUND': -1, 'STATUS_TYPE_LJ_XML': 6, 'STATUS_PRINTER_DRY_WAIT_TIME': 1007, 'JOB_STORAGE_TYPE_OFF': 0, 'PC...(truncated), closeit=closeit@entry=1, flags=flags@entry=0xbffff06c)
    at ../Python/pythonrun.c:1356
#67 0x080acdfb in PyRun_SimpleFileExFlags (fp=0x8378730, 
    filename=<optimised out>, closeit=1, flags=0xbffff06c)
    at ../Python/pythonrun.c:948
#68 0x080aceee in PyRun_AnyFileExFlags (fp=fp@entry=0x8378730, 
    filename=<optimised out>, filename@entry=0xbffff38b "/usr/bin/hp-systray", 
    closeit=closeit@entry=1, flags=flags@entry=0xbffff06c)
    at ../Python/pythonrun.c:752
#69 0x080adb58 in Py_Main (argc=argc@entry=4, argv=argv@entry=0xbffff1a4)
    at ../Modules/main.c:640
#70 0x080adc37 in main (argc=4, argv=0xbffff1a4) at ../Modules/python.c:23
(gdb)

Revision history for this message

Roger James (rogerjames99) wrote on 2014-04-28:

#15

I suspect that this is happening because python has hooked itself if into the GTK logging system. So it looks like _PyErr_WarnEx should really check whether _PyThreadState_Current is non NULL before proceding. This rreally looks like a horrible can of worms.

Can the python guys please look at this.

Revision history for this message

Roger James (rogerjames99) wrote on 2014-04-29:

#16

I switched to trying to resolve my case of the bug by fixing the cause of the warning. In my case this is a warning from pango that it could not find a loadable module.

/usr/lib/i386-linux-gnu/pango/1.8.0/modules/pango-basic-fc.so: cannot open shared object file: No such file or directory'

The directory /usr/lib/i386-linux-gnu/pango does not even exist on my installation. However in /etc/pango/pango.modules there is a long list of modules supposedly in that directory including an entry for pango-basic-fc.so. I found some comments on the web that pango-basic-fc.so is now statically linked in recent revisions of pango. So I just renamed the pango.modules file to pango.modules.old. Everything now works fine.

This would seem to prove that this is a bug in the python infrastructure. It is definitely not a bug in hplip.

Revision history for this message

Till Kamppeter (till-kamppeter) wrote on 2014-04-29:

#17

So I am marking the HPLIP tasks invalid and I have also added a Pango task as moving away a bogus config file of Pango also solves the problem.

Changed in hplip:
status:	New → Invalid
Changed in hplip (Ubuntu):
status:	Confirmed → Invalid
Changed in pango (Ubuntu):
importance:	Undecided → Medium
Changed in pygobject-2 (Ubuntu):
importance:	Undecided → Medium
Changed in python-defaults (Ubuntu):
importance:	Undecided → Medium

Revision history for this message

Roger James (rogerjames99) wrote on 2014-05-01:

#18

For a more comprehensive fix that catches all the cases where warning are generated when the global intrepreter lock has been released and _PyThreadState_Current set to NULL, you can try the following patch to pygobject-2.

--- pygobject-2-2.28.6.orig/gobject/gobjectmodule.c
+++ pygobject-2-2.28.6/gobject/gobjectmodule.c
@@ -2307,7 +2307,7 @@ _log_func(const gchar *log_domain,
           const gchar *message,
           gpointer user_data)
{
- if (G_LIKELY(Py_IsInitialized()))
+ if (G_LIKELY(Py_IsInitialized()) && (NULL != _PyThreadState_Current))
     {
  PyGILState_STATE state;
  PyObject* warning = user_data;

This seems a bit like wallpapering over the cracks, but it was the simplest fix I could come up with.

Roger

Ubuntu
python-defaults package

systray.py crashed with SIGSEGV

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	Status	Importance	Assigned to
HPLIP	Invalid	Undecided	Unassigned
hplip (Ubuntu)	Invalid	Medium	Unassigned
pango (Ubuntu)	New	Medium	Unassigned
pygobject-2 (Ubuntu)	New	Medium	Unassigned
python-defaults (Ubuntu)	New	Medium	Unassigned

Ubuntupython-defaults package

systray.py crashed with SIGSEGV

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Ubuntu
python-defaults package