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Author	mmokrejs
Recipients	mmokrejs
Date	2013-08-26.16:28:28
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1377534511.92.0.663269448586.issue18843@psf.upfronthosting.co.za>
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Hi, it happened to me that using faulthandler and python compiled with --with-pydebug and C*FLAGS=-ggdb I got this stacktrace (will attach longer version as a file): (gdb) where #0 0x00007f0e3af8aacb in raise () from /lib64/libpthread.so.0 #1 0x00007f0e3a0b05f6 in faulthandler_fatal_error (signum=6) at faulthandler.c:321 #2 <signal handler called> #3 0x00007f0e3ac061f5 in raise () from /lib64/libc.so.6 #4 0x00007f0e3ac0766b in abort () from /lib64/libc.so.6 #5 0x00007f0e3b327828 in Py_FatalError (msg=0x7f0e3b373232 "bad leading pad byte") at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Python/pythonrun.c:1689 #6 0x00007f0e3b257dc8 in _PyObject_DebugCheckAddressApi (api=111 'o', p=0x449e6900) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/obmalloc.c:1591 #7 0x00007f0e3b257a6c in _PyObject_DebugFreeApi (api=111 'o', p=0x449e6900) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/obmalloc.c:1478 #8 0x00007f0e3b257913 in _PyObject_DebugFree (p=0x449e6900) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/obmalloc.c:1422 #9 0x00007f0e3b34319a in PyObject_GC_Del (op=0x449e6920) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Modules/gcmodule.c:1561 #10 0x00007f0e3b275ef7 in tupledealloc (op=0x449e6920) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/tupleobject.c:235 #11 0x00007f0e3b255bac in _Py_Dealloc (op=(True,)) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/object.c:2262 #12 0x00007f0e3b246d77 in dict_dealloc (mp=0x449b5d80) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/dictobject.c:1010 #13 0x00007f0e3b255bac in _Py_Dealloc (op= {'_label': <unknown at remote 0x449dd4b8>, '_facecolors_original': (<float at remote 0xb65dd38>, <float at remote 0x5034630>, <float at remote 0xb3c6af8>), '_transform': <unknown at remote 0x449e6b50>, 'figure': <Figure(_label='', _transform=None, figure=None, _axobservers=[], images=[], texts=[], _hold=True, artists=[], _agg_filter=None, patch=<Rectangle(_label='', _transform=<BboxTransformTo(_invalid=2, _inverted=<Affine2D(_invalid=0, _inverted=None, _mtx=<numpy.ndarray at remote 0xd5bc6ec0>, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0xbf7d060>, data={}) at remote 0x129fbdf8>) at remote 0xd5bb0300>, _boxout=<TransformedBbox(_invalid=2, _transform=<Affine2D(_invalid=2, _inverted=None, _mtx=<numpy.ndarray at remote 0xd5bad540>, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0xc166450>, data={741848704: <KeyedRef at remote 0x40290a80>, 405520480: <KeyedRef at remote 0x29e86b10>, 322803328: <KeyedRef at remote 0x29e86570>, 3585872752: <KeyedRef ...(truncated)) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/object.c:2262 #14 0x00007f0e3b27ad3d in subtype_dealloc ( self=<PathCollection(_label=<unknown at remote 0x449dd4b8>, _facecolors_original=(<float at remote 0xb65dd38>, <float at remote 0x5034630>, <float at remote 0xb3c6af8>), _transform=<unknown at remote 0x449e6b50>, figure=<Figure(_label='', _transform=None, figure=None, _axobservers=[], images=[], texts=[], _hold=True, artists=[], _agg_filter=None, patch=<Rectangle(_label='', _transform=<BboxTransformTo(_invalid=2, _inverted=<Affine2D(_invalid=0, _inverted=None, _mtx=<numpy.ndarray at remote 0xd5bc6ec0>, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0xbf7d060>, data={}) at remote 0x129fbdf8>) at remote 0xd5bb0300>, _boxout=<TransformedBbox(_invalid=2, _transform=<Affine2D(_invalid=2, _inverted=None, _mtx=<numpy.ndarray at remote 0xd5bad540>, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0xc166450>, data={741848704: <KeyedRef at remote 0x40290a80>, 405520480: <KeyedRef at remote 0x29e86b10>, 322803328: <KeyedRef at remote 0x29e86570>, 3585872752: <KeyedR...(truncated)) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/typeobject.c:1015 #15 0x00007f0e3b255bac in _Py_Dealloc ( op=<PathCollection(_label=<unknown at remote 0x449dd4b8>, _facecolors_original=(<float at remote 0xb65dd38>, <float at remote 0x5034630>, <float at remote 0xb3c6af8>), _transform=<unknown at remote 0x449e6b50>, figure=<Figure(_label='', _transform=None, figure=None, _axobservers=[], images=[], texts=[], _hold=True, artists=[], _agg_filter=None, patch=<Rectangle(_label='', _transform=<BboxTransformTo(_invalid=2, _inverted=<Affine2D(_invalid=0, _inverted=None, _mtx=<numpy.ndarray at remote 0xd5bc6ec0>, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0xbf7d060>, data={}) at remote 0x129fbdf8>) at remote 0xd5bb0300>, _boxout=<TransformedBbox(_invalid=2, _transform=<Affine2D(_invalid=2, _inverted=None, _mtx=<numpy.ndarray at remote 0xd5bad540>, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0xc166450>, data={741848704: <KeyedRef at remote 0x40290a80>, 405520480: <KeyedRef at remote 0x29e86b10>, 322803328: <KeyedRef at remote 0x29e86570>, 3585872752: <KeyedR...(truncated)) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/object.c:2262 #16 0x00007f0e3b230841 in list_dealloc (op=0x1d1740d8) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/listobject.c:309 #17 0x00007f0e3b255bac in _Py_Dealloc ( op=[<PathCollection(_label='_collection0', _facecolors_original=(<float at remote 0x5034630>, <float at remote 0xc489d80>, <float at remote 0xc568ab8>), _transform=<IdentityTransform(_invalid=1, _inverted=None, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0xbf7d840>, data={}) at remote 0x129fb510>) at remote 0x1201cd10>, figure=<Figure(_label='', _transform=None, figure=None, _axobservers=[], images=[], texts=[], _hold=True, artists=[], _agg_filter=None, patch=<Rectangle(_label='', _transform=<BboxTransformTo(_invalid=2, _inverted=<Affine2D(_invalid=0, _inverted=None, _mtx=<numpy.ndarray at remote 0xd5bc6ec0>, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0xbf7d060>, data={}) at remote 0x129fbdf8>) at remote 0xd5bb0300>, _boxout=<TransformedBbox(_invalid=2, _transform=<Affine2D(_invalid=2, _inverted=None, _mtx=<numpy.ndarray at remote 0xd5bad540>, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0xc166450>, data={741848...(truncated)) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/object.c:2262 #18 0x00007f0e3b245789 in insertdict_by_entry (mp=0x17e2a9c0, key='collections', hash=5674278088882554420, ep=0x103a7dc0, value=[]) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/dictobject.c:519 #19 0x00007f0e3b245a5b in insertdict (mp=0x17e2a9c0, key='collections', hash=5674278088882554420, value=[]) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/dictobject.c:556 #20 0x00007f0e3b246326 in dict_set_item_by_hash_or_entry (op=0x0, key='collections', hash=5674278088882554420, ep=0x0, value=[]) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/dictobject.c:765 #21 0x00007f0e3b2464be in PyDict_SetItem ( op={'transLimits': <BboxTransformFrom(_invalid=2, _boxin=<TransformedBbox(_invalid=2, _transform=<TransformWrapper(_invalid=0, transform_path_affine=<instancemethod at remote 0xbad73e0>, input_dims=2, transform_path=<instancemethod at remote 0x17f47d60>, transform=<instancemethod at remote 0xd511bee0>, transform_affine=<instancemethod at remote 0x1e0e0260>, inverted=<instancemethod at remote 0x17f47ce0>, _child=<BlendedAffine2D(_invalid=1, _y=<IdentityTransform(_invalid=1, _inverted=None, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0x10c92648>, data={315699008: <KeyedRef at remote 0xbd63a80>}) at remote 0x350f5df8>) at remote 0x2c360bc0>, _x=<IdentityTransform(_invalid=1, _inverted=None, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0x145ff990>, data={315699008: <KeyedRef at remote 0xbd63720>}) at remote 0xbfde2b8>) at remote 0x2c36c680>, _inverted=None, _mtx=None, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0x10c...(truncated), key='collections', value=[]) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/dictobject.c:818 It was drawing a chart using matplotlib-1.2.1. Is this a python or matplotlib bug? I shortened the gdb stacktrace hoping you don't need the rest.

Hi,
  it happened to me that using faulthandler and python compiled with --with-pydebug and C*FLAGS=-ggdb I got this stacktrace (will attach longer version as a file):


(gdb) where
#0  0x00007f0e3af8aacb in raise () from /lib64/libpthread.so.0
#1  0x00007f0e3a0b05f6 in faulthandler_fatal_error (signum=6) at faulthandler.c:321
#2  <signal handler called>
#3  0x00007f0e3ac061f5 in raise () from /lib64/libc.so.6
#4  0x00007f0e3ac0766b in abort () from /lib64/libc.so.6
#5  0x00007f0e3b327828 in Py_FatalError (msg=0x7f0e3b373232 "bad leading pad byte") at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Python/pythonrun.c:1689
#6  0x00007f0e3b257dc8 in _PyObject_DebugCheckAddressApi (api=111 'o', p=0x449e6900) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/obmalloc.c:1591
#7  0x00007f0e3b257a6c in _PyObject_DebugFreeApi (api=111 'o', p=0x449e6900) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/obmalloc.c:1478
#8  0x00007f0e3b257913 in _PyObject_DebugFree (p=0x449e6900) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/obmalloc.c:1422
#9  0x00007f0e3b34319a in PyObject_GC_Del (op=0x449e6920) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Modules/gcmodule.c:1561
#10 0x00007f0e3b275ef7 in tupledealloc (op=0x449e6920) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/tupleobject.c:235
#11 0x00007f0e3b255bac in _Py_Dealloc (op=(True,)) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/object.c:2262
#12 0x00007f0e3b246d77 in dict_dealloc (mp=0x449b5d80) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/dictobject.c:1010
#13 0x00007f0e3b255bac in _Py_Dealloc (op=
    {'_label': <unknown at remote 0x449dd4b8>, '_facecolors_original': (<float at remote 0xb65dd38>, <float at remote 0x5034630>, <float at remote 0xb3c6af8>), '_transform': <unknown at remote 0x449e6b50>, 'figure': <Figure(_label='', _transform=None, figure=None, _axobservers=[], images=[], texts=[], _hold=True, artists=[], _agg_filter=None, patch=<Rectangle(_label='', _transform=<BboxTransformTo(_invalid=2, _inverted=<Affine2D(_invalid=0, _inverted=None, _mtx=<numpy.ndarray at remote 0xd5bc6ec0>, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0xbf7d060>, data={}) at remote 0x129fbdf8>) at remote 0xd5bb0300>, _boxout=<TransformedBbox(_invalid=2, _transform=<Affine2D(_invalid=2, _inverted=None, _mtx=<numpy.ndarray at remote 0xd5bad540>, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0xc166450>, data={741848704: <KeyedRef at remote 0x40290a80>, 405520480: <KeyedRef at remote 0x29e86b10>, 322803328: <KeyedRef at remote 0x29e86570>, 3585872752: <KeyedRef ...(truncated)) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/object.c:2262
#14 0x00007f0e3b27ad3d in subtype_dealloc (
    self=<PathCollection(_label=<unknown at remote 0x449dd4b8>, _facecolors_original=(<float at remote 0xb65dd38>, <float at remote 0x5034630>, <float at remote 0xb3c6af8>), _transform=<unknown at remote 0x449e6b50>, figure=<Figure(_label='', _transform=None, figure=None, _axobservers=[], images=[], texts=[], _hold=True, artists=[], _agg_filter=None, patch=<Rectangle(_label='', _transform=<BboxTransformTo(_invalid=2, _inverted=<Affine2D(_invalid=0, _inverted=None, _mtx=<numpy.ndarray at remote 0xd5bc6ec0>, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0xbf7d060>, data={}) at remote 0x129fbdf8>) at remote 0xd5bb0300>, _boxout=<TransformedBbox(_invalid=2, _transform=<Affine2D(_invalid=2, _inverted=None, _mtx=<numpy.ndarray at remote 0xd5bad540>, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0xc166450>, data={741848704: <KeyedRef at remote 0x40290a80>, 405520480: <KeyedRef at remote 0x29e86b10>, 322803328: <KeyedRef at remote 0x29e86570>, 3585872752: <KeyedR...(truncated)) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/typeobject.c:1015
#15 0x00007f0e3b255bac in _Py_Dealloc (
    op=<PathCollection(_label=<unknown at remote 0x449dd4b8>, _facecolors_original=(<float at remote 0xb65dd38>, <float at remote 0x5034630>, <float at remote 0xb3c6af8>), _transform=<unknown at remote 0x449e6b50>, figure=<Figure(_label='', _transform=None, figure=None, _axobservers=[], images=[], texts=[], _hold=True, artists=[], _agg_filter=None, patch=<Rectangle(_label='', _transform=<BboxTransformTo(_invalid=2, _inverted=<Affine2D(_invalid=0, _inverted=None, _mtx=<numpy.ndarray at remote 0xd5bc6ec0>, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0xbf7d060>, data={}) at remote 0x129fbdf8>) at remote 0xd5bb0300>, _boxout=<TransformedBbox(_invalid=2, _transform=<Affine2D(_invalid=2, _inverted=None, _mtx=<numpy.ndarray at remote 0xd5bad540>, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0xc166450>, data={741848704: <KeyedRef at remote 0x40290a80>, 405520480: <KeyedRef at remote 0x29e86b10>, 322803328: <KeyedRef at remote 0x29e86570>, 3585872752: <KeyedR...(truncated)) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/object.c:2262
#16 0x00007f0e3b230841 in list_dealloc (op=0x1d1740d8) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/listobject.c:309
#17 0x00007f0e3b255bac in _Py_Dealloc (
    op=[<PathCollection(_label='_collection0', _facecolors_original=(<float at remote 0x5034630>, <float at remote 0xc489d80>, <float at remote 0xc568ab8>), _transform=<IdentityTransform(_invalid=1, _inverted=None, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0xbf7d840>, data={}) at remote 0x129fb510>) at remote 0x1201cd10>, figure=<Figure(_label='', _transform=None, figure=None, _axobservers=[], images=[], texts=[], _hold=True, artists=[], _agg_filter=None, patch=<Rectangle(_label='', _transform=<BboxTransformTo(_invalid=2, _inverted=<Affine2D(_invalid=0, _inverted=None, _mtx=<numpy.ndarray at remote 0xd5bc6ec0>, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0xbf7d060>, data={}) at remote 0x129fbdf8>) at remote 0xd5bb0300>, _boxout=<TransformedBbox(_invalid=2, _transform=<Affine2D(_invalid=2, _inverted=None, _mtx=<numpy.ndarray at remote 0xd5bad540>, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0xc166450>, data={741848...(truncated)) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/object.c:2262
#18 0x00007f0e3b245789 in insertdict_by_entry (mp=0x17e2a9c0, key='collections', hash=5674278088882554420, ep=0x103a7dc0, value=[]) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/dictobject.c:519
#19 0x00007f0e3b245a5b in insertdict (mp=0x17e2a9c0, key='collections', hash=5674278088882554420, value=[]) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/dictobject.c:556
#20 0x00007f0e3b246326 in dict_set_item_by_hash_or_entry (op=0x0, key='collections', hash=5674278088882554420, ep=0x0, value=[]) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/dictobject.c:765
#21 0x00007f0e3b2464be in PyDict_SetItem (
    op={'transLimits': <BboxTransformFrom(_invalid=2, _boxin=<TransformedBbox(_invalid=2, _transform=<TransformWrapper(_invalid=0, transform_path_affine=<instancemethod at remote 0xbad73e0>, input_dims=2, transform_path=<instancemethod at remote 0x17f47d60>, transform=<instancemethod at remote 0xd511bee0>, transform_affine=<instancemethod at remote 0x1e0e0260>, inverted=<instancemethod at remote 0x17f47ce0>, _child=<BlendedAffine2D(_invalid=1, _y=<IdentityTransform(_invalid=1, _inverted=None, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0x10c92648>, data={315699008: <KeyedRef at remote 0xbd63a80>}) at remote 0x350f5df8>) at remote 0x2c360bc0>, _x=<IdentityTransform(_invalid=1, _inverted=None, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0x145ff990>, data={315699008: <KeyedRef at remote 0xbd63720>}) at remote 0xbfde2b8>) at remote 0x2c36c680>, _inverted=None, _mtx=None, _shorthand_name='', _parents=<WeakValueDictionary(_remove=<function at remote 0x10c...(truncated), key='collections', value=[]) at /mnt/1TB/var/tmp/portage/dev-lang/python-2.7.5-r2/work/Python-2.7.5/Objects/dictobject.c:818

It was drawing a chart using matplotlib-1.2.1. Is this a python or matplotlib bug? I shortened the gdb stacktrace hoping you don't need the rest.

History
Date	User	Action	Args
2013-08-26 16:28:32	mmokrejs	set	recipients: + mmokrejs
2013-08-26 16:28:31	mmokrejs	set	messageid: <1377534511.92.0.663269448586.issue18843@psf.upfronthosting.co.za>
2013-08-26 16:28:31	mmokrejs	link	issue18843 messages
2013-08-26 16:28:31	mmokrejs	create