Issue 5328: Crash when doing some list iteration (original) (raw)

I am using the python 2.5.4 in redhat enterprise.

My project is a big one with turbogears and sqlobject. The python core dumped sometime when iterating list. It occurs randomly and cannot be reproduced.

After using gdb, I found python core dumped at this line in the lambda unnamed function: newsfeeds = filter(lambda x: not(x.activity==0 and x.value.get('uid')==sess.user.id),n)[:5]

The core dump info is as followed:

#0 listiter_next (it=0xa2988ecc) at Objects/listobject.c:2819 #1 0x08079e56 in listextend (self=0xa91f90c, b=) at Objects/listobject.c:823 #2 0x0807a370 in list_init (self=0xa91f90c, args=0xb64c6ec, kw=0x0) at Objects/listobject.c:2391 #3 0x0809bfe3 in type_call (type=0x8140220, args=0xb64c6ec, kwds=0x0) at Objects/typeobject.c:436 #4 0x0805a5f7 in PyObject_Call (func=0xb47cc6c, arg=0xb64c6ec, kw=0x0) at Objects/abstract.c:1861 #5 0x080c16a2 in PyEval_EvalFrameEx (f=0xa2649aec, throwflag=0) at Python/ceval.c:3823 #6 0x080c7765 in PyEval_EvalCodeEx (co=0x9929a88, globals=0x9907b54, locals=0x0, args=0xb52fe58, argcount=1, kws=0x9f98ae0, kwcount=2, defs=0x991ed38, defcount=2, closure=0x0) at Python/ceval.c:2875 #7 0x0810f0ba in function_call (func=0x9f32b54, arg=0xb52fe4c, kw=0xa27b679c) at Objects/funcobject.c:517 #8 0x0805a5f7 in PyObject_Call (func=0xb47cc6c, arg=0xb52fe4c, kw=0xa27b679c) at Objects/abstract.c:1861 #9 0x080c46dd in PyEval_EvalFrameEx (f=0xac6737c, throwflag=0) at Python/ceval.c:3892 #10 0x080c7765 in PyEval_EvalCodeEx (co=0x89bce30, globals=0x8ac702c, locals=0x0, args=0xa14d6418, argcount=2, kws=0xa3c2ba0, kwcount=2, defs=0x0, defcount=0, closure=0x0) at Python/ceval.c:2875 #11 0x0810f0ba in function_call (func=0x8acf144, arg=0xa14d640c, kw=0xa27b69bc) at Objects/funcobject.c:517 #12 0x0805a5f7 in PyObject_Call (func=0xb47cc6c, arg=0xa14d640c, kw=0xa27b69bc) at Objects/abstract.c:1861 #13 0x080c46dd in PyEval_EvalFrameEx (f=0xac671ec, throwflag=0) at Python/ceval.c:3892 #14 0x080c6410 in PyEval_EvalFrameEx (f=0xacf7c1c, throwflag=0) at Python/ceval.c:3698 #15 0x080c7765 in PyEval_EvalCodeEx (co=0x84e1da0, globals=0x84d8acc, locals=0x0, args=0xa0d144e8, argcount=4, kws=0x9d850e8, kwcount=2, defs=0x0, defcount=0, closure=0x9f3944c) at Python/ceval.c:2875 #16 0x0810f0ba in function_call (func=0x9f32cdc, arg=0xa0d144dc, kw=0x9a22824) at Objects/funcobject.c:517 #17 0x0805a5f7 in PyObject_Call (func=0xb47cc6c, arg=0xa0d144dc, kw=0x9a22824) at Objects/abstract.c:1861 #18 0x080c46dd in PyEval_EvalFrameEx (f=0xa2304ba4, throwflag=0) at Python/ceval.c:3892 #19 0x080c7765 in PyEval_EvalCodeEx (co=0x9dcf890, globals=0x857ebdc, locals=0x0, args=0xbb7b5b0, argcount=4, kws=0x9b82858, kwcount=2, defs=0x0, defcount=0, closure=0x9ebf10c) at Python/ceval.c:2875 #20 0x0810f0ba in function_call (func=0xa40de64, arg=0xbb7b5a4, kw=0xa27b6604) at Objects/funcobject.c:517 #21 0x0805a5f7 in PyObject_Call (func=0xb47cc6c, arg=0xbb7b5a4, kw=0xa27b6604) at Objects/abstract.c:1861 #22 0x080c46dd in PyEval_EvalFrameEx (f=0x9c7b0d4, throwflag=0) at Python/ceval.c:3892 #23 0x080c7765 in PyEval_EvalCodeEx (co=0x89ade30, globals=0x89b7acc, locals=0x0, args=0xa275a248, argcount=5, kws=0x9c8e838, kwcount=2, defs=0x0, defcount=0, closure=0x0) at Python/ceval.c:2875