[ python-Bugs-1429585 ] segfault in FreeBSD

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Bugs item #1429585, was opened at 2006-02-11 00:16
Message generated for change (Comment added) made by nnorwitz
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Category: Threads
Group: Python 2.4
Status: Open
Resolution: None
Priority: 5
Submitted By: aix-d (aix-d)
Assigned to: Nobody/Anonymous (nobody)
Summary: segfault in FreeBSD

Initial Comment:
Dear developers,

My program has many TCP connections (~30 per second),
MySQL connections (~100 per second) and threads (~280).
It works long time and receives this segmentation fault:

exited on signal 11 (core dumped)

=========== GDB OUTPUT
=================================================
Program received signal SIGSEGV, Segmentation fault.
0x283199e8 in ?? () from
/usr/local/lib/python2.4/lib-dynload/_socket.so
(gdb) backtrace
#0  0x283199e8 in ?? () from
/usr/local/lib/python2.4/lib-dynload/_socket.so
#1  0x2831b3d5 in internal_connect ()
   from /usr/local/lib/python2.4/lib-dynload/_socket.so
#2  0x2831b440 in sock_connect ()
   from /usr/local/lib/python2.4/lib-dynload/_socket.so
#3  0x0805a828 in PyObject_Call ()
#4  0x080a01dd in PyEval_EvalFrame ()
#5  0x080a294f in PyEval_EvalCodeEx ()
#6  0x080a138b in PyEval_EvalFrame ()
#7  0x080a212d in PyEval_EvalFrame ()
#8  0x080a212d in PyEval_EvalFrame ()
#9  0x080a212d in PyEval_EvalFrame ()
#10 0x080a212d in PyEval_EvalFrame ()
#11 0x080a212d in PyEval_EvalFrame ()
#12 0x080a294f in PyEval_EvalCodeEx ()
#13 0x080a138b in PyEval_EvalFrame ()
#14 0x080a212d in PyEval_EvalFrame ()
#15 0x080a294f in PyEval_EvalCodeEx ()
#16 0x080da027 in PyFunction_SetClosure ()
#17 0x0805a828 in PyObject_Call ()
#18 0x080a01dd in PyEval_EvalFrame ()
#19 0x080a294f in PyEval_EvalCodeEx ()
#20 0x080a138b in PyEval_EvalFrame ()
#21 0x080a294f in PyEval_EvalCodeEx ()
#22 0x080a138b in PyEval_EvalFrame ()
#23 0x080a294f in PyEval_EvalCodeEx ()
#24 0x080a138b in PyEval_EvalFrame ()
#25 0x080a294f in PyEval_EvalCodeEx ()
#26 0x080a138b in PyEval_EvalFrame ()
#27 0x080a294f in PyEval_EvalCodeEx ()
#28 0x080a138b in PyEval_EvalFrame ()
#29 0x080a294f in PyEval_EvalCodeEx ()
#30 0x080a138b in PyEval_EvalFrame ()
#31 0x080a212d in PyEval_EvalFrame ()
#32 0x080a294f in PyEval_EvalCodeEx ()
#33 0x080da027 in PyFunction_SetClosure ()
#34 0x0805a828 in PyObject_Call ()
#35 0x080601e9 in PyMethod_New ()
#36 0x0805a828 in PyObject_Call ()
#37 0x0809cd31 in PyEval_CallObjectWithKeywords ()
#38 0x080c21a5 in _PyObject_GC_Del ()
#39 0x2821e0cc in pthread_create () from
/usr/lib/libpthread.so.2
#40 0x282db757 in _ctx_start () from /lib/libc.so.6
(gdb)
==== END OF GDB OUTPUT
=================================================

Imported modules: socket, atexit, time, pickle, os,
random, traceback, MySQLdb, re, urllib, urllib2, threading

Python version: 2.4.2

Operating system: FreeBSD 6.0-STABLE

Can you help with debugging?

Best regards, Alexander.

----------------------------------------------------------------------

>Comment By: Neal Norwitz (nnorwitz)
Date: 2006-02-11 22:54

Message:
Logged In: YES 
user_id=33168

Can you build python from source?  You can try checking out
the current 2.4 SVN.  This problem may have been fixed
recently.  I'm guessing that the socket descriptor value is
larger than FD_SETSIZE (probably 1k or 4k).  You also may
want to build python with debugging.

If that doesn't solve your problem, you will need to provide
more information about how to reproduce your problem.

----------------------------------------------------------------------

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