वर्चुअलएन्व में एक पाइसाइड सेगमेंटेशन गलती को डीबग कैसे करें?

Question

मैं पाइसाइड के साथ एक क्यूटी ऐप बना रहा हूं और मेरे पास यादृच्छिक विभाजन दोष हैं। मैं faulthandler स्थापित किया है और callstack स्पष्ट है uncomplete यदि:

File "/home/lionel/Libs/python/ProcessGraph/process_graph/qtgraph.py", line 247 in itemChange 
    File "/home/lionel/Libs/python/ProcessGraph/process_graph/qtgraph.py", line 268 in mousePressEvent 
    File "/home/lionel/Libs/python/ProcessGraph/process_graph/qtgraph.py", line 87 in mousePressEvent 
    File "main.py", line 219 in main 
    File "main.py", line 223 in <module> 

दुर्घटना हमेशा वहाँ है (mousePressEvent में), लेकिन मैं नहीं दिख रहा है कि मैं क्या gdb शुरू करने को छोड़कर वहाँ से कर सकते हैं।

मैंने पायथन-जीडीबी स्थापित किया है और लॉन्च करने का प्रयास किया है: gdb -ex r --args python-dbg main.py लेकिन यह नहीं चलता है। तो मैं फंस गया हूँ। यहाँ ढेर:

python2.7-dbg: ../Objects/object.c:65: _Py_AddToAllObjects: Assertion `(op->_ob_prev == ((void *)0)) == (op->_ob_next == ((void *)0))' failed. 

Program received signal SIGABRT, Aborted. 
0x00007ffff6f09037 in raise() 
    from /lib/x86_64-linux-gnu/libc.so.6 
(gdb) bt 
#0 0x00007ffff6f09037 in raise() 
    from /lib/x86_64-linux-gnu/libc.so.6 
#1 0x00007ffff6f0c698 in abort() 
    from /lib/x86_64-linux-gnu/libc.so.6 
#2 0x00007ffff6f01e03 in ??() 
    from /lib/x86_64-linux-gnu/libc.so.6 
#3 0x00007ffff6f01eb2 in __assert_fail() 
    from /lib/x86_64-linux-gnu/libc.so.6 
#4 0x0000000000488f38 in _Py_AddToAllObjects (
    op=<unknown at remote 0x7ffff578aa20>, force=0) 
    at ../Objects/object.c:65 
#5 0x00000000004bbde5 in PyType_Ready (
    type=0x7ffff578aa20 <SbkEnumType_Type>) 
    at ../Objects/typeobject.c:3985 
#6 0x00007ffff5567e50 in Shiboken::init()() 
    from /usr/lib/x86_64-linux-gnu/libshiboken-python2.7.so.1.1 
#7 0x00007ffff5577b79 in Shiboken::Module::create(char const*, void*)() 
    from /usr/lib/x86_64-linux-gnu/libshiboken-python2.7.so.1.1 
#8 0x00007ffff0c98fb9 in initQtCore() 
    from /usr/lib/python2.7/dist-packages/PySide/QtCore.so 
#9 0x0000000000549771 in _PyImport_LoadDynamicModule 
    (name=0xc37900 "PySide.QtCore", 
    pathname=0xc38930 "/usr/lib/python2.7/dist-packages/PySide/QtCore.so", fp=0xc3a980) 
    at ../Python/importdl.c:53 
#10 0x0000000000545984 in load_module (
    name=0xc37900 "PySide.QtCore", fp=0xc3a980, 
    pathname=0xc38930 "/usr/lib/python2.7/dist-packages/PySide/QtCore.so", type=3, loader=0x0) 
    at ../Python/import.c:1915 
#11 0x0000000000547ade in import_submodule (
    mod=<module at remote 0xbe2af0>, 
    subname=0xc37907 "QtCore", 
    fullname=0xc37900 "PySide.QtCore") 
    at ../Python/import.c:2700 
#12 0x00000000005470ae in load_next (
    mod=<module at remote 0xbe2af0>, 
    altmod=<module at remote 0xbe2af0>, 
    p_name=0x7fffffffcee8, 
    buf=0xc37900 "PySide.QtCore", 
    p_buflen=0x7fffffffcf00) 
    at ../Python/import.c:2515 
#13 0x000000000054632e in import_module_level (
    name=0x0, 
    globals={'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, 
    locals={'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, fromlist=['__doc__'], 
    level=0) at ../Python/import.c:2232 
#14 0x0000000000546805 in PyImport_ImportModuleLevel (
    name=0xc86c3c "PySide.QtCore", 
    globals={'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, 
    locals={'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, fromlist=['__doc__'], 
    level=0) at ../Python/import.c:2288 
#15 0x000000000051208b in builtin___import__ (
    self=0x0, 
    args=('PySide.QtCore', {'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, {...}, ['__doc__'], 0), kwds=0x0) at ../Python/bltinmodule.c:49 
---Type <return> to continue, or q <return> to quit--- 
#16 0x0000000000487ae4 in PyCFunction_Call (
    func=<built-in function __import__>, 
    arg=('PySide.QtCore', {'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, {...}, ['__doc__'], 0), kw=0x0) at ../Objects/methodobject.c:85 
#17 0x0000000000427737 in PyObject_Call (
    func=<built-in function __import__>, 
    arg=('PySide.QtCore', {'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, {...}, ['__doc__'], 0), kw=0x0) at ../Objects/abstract.c:2529 
#18 0x000000000042788d in call_function_tail (
    callable=<built-in function __import__>, 
    args=('PySide.QtCore', {'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, {...}, ['__doc__'], 0)) at ../Objects/abstract.c:2561 
#19 0x00000000004279f9 in PyObject_CallFunction (
    callable=<built-in function __import__>, 
    format=0x6412f7 "OOOOi") 
    at ../Objects/abstract.c:2585 
#20 0x00000000005483e5 in PyImport_Import (
    module_name='PySide.QtCore') 
    at ../Python/import.c:2886 
#21 0x00000000005460cc in PyImport_ImportModule (
    name=0x7ffff6796c67 "PySide.QtCore") 
    at ../Python/import.c:2129 
#22 0x00007ffff5577b38 in Shiboken::Module::import(char const*)() 
    from /usr/lib/x86_64-linux-gnu/libshiboken-python2.7.so.1.1 
#23 0x00007ffff65a7cd6 in initQtGui() 
    from /usr/lib/python2.7/dist-packages/PySide/QtGui.so 
#24 0x0000000000549771 in _PyImport_LoadDynamicModule 
    (name=0xc209a0 "PySide.QtGui", 
    pathname=0xc235a0 "/usr/lib/python2.7/dist-packages/PySide/QtGui.so", fp=0xc09660) 
    at ../Python/importdl.c:53 
#25 0x0000000000545984 in load_module (
    name=0xc209a0 "PySide.QtGui", fp=0xc09660, 
    pathname=0xc235a0 "/usr/lib/python2.7/dist-packages/PySide/QtGui.so", type=3, loader=0x0) 
    at ../Python/import.c:1915 
#26 0x0000000000547ade in import_submodule (
    mod=<module at remote 0xbe2af0>, 
    subname=0xbe4a94 "QtGui", 
    fullname=0xc209a0 "PySide.QtGui") 
    at ../Python/import.c:2700 
#27 0x000000000054766c in ensure_fromlist (
    mod=<module at remote 0xbe2af0>, 
    fromlist=('QtGui',), buf=0xc209a0 "PySide.QtGui", 
    buflen=6, recursive=0) at ../Python/import.c:2606 
#28 0x000000000054672a in import_module_level (
    name=0x0, 
    globals={'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, 
    locals={'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, fromlist=('QtGui',), 
    level=-1) at ../Python/import.c:2269 
#29 0x0000000000546805 in PyImport_ImportModuleLevel (
    name=0xbe4a34 "PySide", 
    globals={'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, 
    locals={'__builtins__': <module at remote 0x7ffff7f---Type <return> to continue, or q <return> to quit--- 
cd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, fromlist=('QtGui',), 
    level=-1) at ../Python/import.c:2288 
#30 0x000000000051208b in builtin___import__ (
    self=0x0, 
    args=('PySide', {'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, {...}, ('QtGui',)), kwds=0x0) at ../Python/bltinmodule.c:49 
#31 0x0000000000487ae4 in PyCFunction_Call (
    func=<built-in function __import__>, 
    arg=('PySide', {'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, {...}, ('QtGui',)), 
    kw=0x0) at ../Objects/methodobject.c:85 
#32 0x0000000000427737 in PyObject_Call (
    func=<built-in function __import__>, 
    arg=('PySide', {'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, {...}, ('QtGui',)), 
    kw=0x0) at ../Objects/abstract.c:2529 
#33 0x0000000000527948 in PyEval_CallObjectWithKeywords (func=<built-in function __import__>, 
    arg=('PySide', {'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, {...}, ('QtGui',)), 
    kw=0x0) at ../Python/ceval.c:3890 
#34 0x0000000000521c54 in PyEval_EvalFrameEx (
    f=Frame 0xc092f0, for file main.py, line 7, in <module>(), throwflag=0) at ../Python/ceval.c:2333 
#35 0x0000000000525989 in PyEval_EvalCodeEx (
    co=0xbc2510, 
    globals={'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, 
    locals={'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, args=0x0, argcount=0, 
    kws=0x0, kwcount=0, defs=0x0, defcount=0, 
    closure=0x0) at ../Python/ceval.c:3253 
#36 0x000000000051b9f6 in PyEval_EvalCode (
    co=0xbc2510, 
    globals={'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, 
    locals={'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}) at ../Python/ceval.c:667 
#37 0x000000000055842d in run_mod (mod=0xc1c1a8, 
    filename=0x7fffffffe1a8 "main.py", 
    globals={'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, 
    locals={'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, flags=0x7fffffffdc10, 
    arena=0xb7f8a0) at ../Python/pythonrun.c:1365 
#38 0x00000000005583b3 in PyRun_FileExFlags (
    fp=0xc05370, filename=0x7fffffffe1a8 "main.py", 
    start=257, 
    globals={'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, 
---Type <return> to continue, or q <return> to quit--- 
    locals={'__builtins__': <module at remote 0x7ffff7fcd4d8>, '__file__': 'main.py', '__package__': None, 'sys': <module at remote 0x7ffff7fcd610>, '__name__': '__main__', '__doc__': None}, closeit=1, 
    flags=0x7fffffffdc10) 
    at ../Python/pythonrun.c:1351 
#39 0x0000000000556b70 in PyRun_SimpleFileExFlags (
    fp=0xc05370, filename=0x7fffffffe1a8 "main.py", 
    closeit=1, flags=0x7fffffffdc10) 
    at ../Python/pythonrun.c:943 
#40 0x0000000000556201 in PyRun_AnyFileExFlags (
    fp=0xc05370, filename=0x7fffffffe1a8 "main.py", 
    closeit=1, flags=0x7fffffffdc10) 
    at ../Python/pythonrun.c:747 
#41 0x000000000057203a in Py_Main (argc=2, 
    argv=0x7fffffffde28) at ../Modules/main.c:640 
#42 0x0000000000417edc in main (argc=2, 
    argv=0x7fffffffde28) at ../Modules/python.c:23 

Answer 1

एक चाल नहीं है, तो आप प्रणाली अजगर दुभाषिया है कि आपके virtualenv से मेल खाती है शुरू कर दिया है।

आपको यह भी सुनिश्चित करना होगा कि आप पाइथन के डीबग बिल्ड का उपयोग कर रहे हैं।

यहाँ कैसे मैं Ubuntu पर अजगर सुविधाओं के साथ gdb पाने में कामयाब रहे है:

# must use debug build of Python 
sudo apt-get install gdb python2.7-dbg 

# newest kernels disallow tracing/debugging by default (why on earth?)  
echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope 

# create virtualenv with debug Python build 
virtualenv -p /usr/bin/python2.7-dbg ~/labarret 

# start virtualenv  
. ~/labarret/bin/activate 

# pip install your-libs-and-deps 

# now start **system** interpreter that corresponds to virtualenv 
# make sure virtualenv libs/modules are loaded via environment 
PYTHONHOME=~/labarret/ gdb --args /usr/bin/python2.7-dbg your-code.py