Python 2.5 Core Dump on Solaris 8

Fri Nov 10 16:31:54 EST 2006

Hi.  I'm new to Python. :)

I've modified grappy.py, 
http://www.stacken.kth.se/~mattiasa/projects/grappy/, a postfix policy 
daemon for greylisting. to use LDAP as a backend instead of SQL (with 
python-ldap.)  The daemon runs fine when testing but when I put it under 
load it core dumps quickly.  What little analysis I know how to do shows 
similar information every time.  Any advice on where to go from here?

Thanks!
Melissa

Python 2.5 on Solaris 8:

truss:

   write(1, " g r e y l i s t e d :  ".., 82)      = 82
   Action:defer_if_permit Temporary failure
   write(1, " A c t i o n : d e f e r".., 41)      = 41
       Incurred fault #5, FLTACCESS  %pc = 0xFF142794
         siginfo: SIGBUS BUS_ADRALN addr=0x0000000F
       Received signal #10, SIGBUS [default]
         siginfo: SIGBUS BUS_ADRALN addr=0x0000000F
           *** process killed ***

pflags:

core './core' of 12227: python grappy-ldap.py
         data model = _ILP32  flags = PR_RLC
   flttrace = 0xfffffbff
   sigtrace = 0xfffffeff 0xffffffff
   entryset = 0x00000401 0x04000000 0x00000000 0x00000028
              0x80000000 0x00000000 0x00000000 0x00000000
   exitset  = 0xfffffffe 0xffffffff 0xffffffff 0xffffffd7
              0x7fffffff 0xffffffff 0xffffffff 0xffffffff
   /16:  flags = PR_PCINVAL
   sigmask = 0xffffbefc,0x00001fff  cursig = SIGBUS
   /17:  flags = PR_STOPPED
   why = PR_SUSPENDED
   /18:  flags = PR_STOPPED
   why = PR_SUSPENDED
   /19:  flags = PR_STOPPED
   why = PR_SUSPENDED
   /20:  flags = PR_STOPPED
   why = PR_SUSPENDED
   /21:  flags = PR_STOPPED
   why = PR_SUSPENDED
   /1:   flags = PR_STOPPED
   why = PR_SUSPENDED
   /2:   flags = PR_STOPPED|PR_ASLWP
   why = PR_SUSPENDED
   sigmask = 0xffbffeff,0x00001fff
   /3:   flags = PR_STOPPED
   why = PR_SUSPENDED
   /4:   flags = PR_STOPPED
   why = PR_SUSPENDED
   /5:   flags = PR_STOPPED
   why = PR_SUSPENDED
   /6:   flags = PR_STOPPED
   why = PR_SUSPENDED
   /7:   flags = PR_STOPPED
   why = PR_SUSPENDED
   /8:   flags = PR_STOPPED
   why = PR_SUSPENDED
   /9:   flags = PR_STOPPED
   why = PR_SUSPENDED
   /10:  flags = PR_STOPPED
   why = PR_SUSPENDED
   /11:  flags = PR_STOPPED
   why = PR_SUSPENDED
   /12:  flags = PR_STOPPED
   why = PR_SUSPENDED
   /13:  flags = PR_STOPPED
   why = PR_SUSPENDED
   /14:  flags = PR_STOPPED
   why = PR_SUSPENDED
   /15:  flags = PR_STOPPED
   why = PR_SUSPENDED

pstack for the suspicious thread:

core './core' of 12227: python grappy-ldap.py
-----------------  lwp# 16 / thread# 13  --------------------
  ff142794 t_delete (ffffffff, 15df78, fffffffd, 1590f0, 3c4cf0, 4e80) + 
c
  ff14240c realfree (ffffffff, ff1c2858, ff1bc008, 1590f0, 4e83, 1590f8) 
+ d0
  ff142cb0 cleanfree (0, ff1bc008, ff1c27cc, ff1c284c, ff1c281c, 0) + 58
  ff141de4 _malloc_unlocked (10, 0, ff1bc008, 10, 1, 0) + f0
  ff141fec realloc  (ff1c0608, 10, ff1bc008, 4cd80, 10, 0) + 5c
  00040278 app1     (26c788, 264610, 1292ec, 0, 25ddd0, 25dddc) + a4
  00044324 listappend (26c788, 264610, 1291c4, 8, ff1bfc78, 106418) + 8
  0008f1f8 call_function (fe1086a0, 1, 8cc30, 4cd80, 6, 15c45c) + 594
  0008cc38 PyEval_EvalFrameEx (2c9668, 1, 0, 2c9668, 1, 1b00f0) + 2be0
  0008f73c fast_function (1daaf0, 3d7240, 2, 2c9668, 1b00f0, 2639c0) + c4
  0008f5ec call_function (fe108868, 2, 8cc30, 4cd80, 5, 21191c) + 988
  0008cc38 PyEval_EvalFrameEx (3d70e8, 1, 0, 3d70e8, 1, 1b00f0) + 2be0
  0008f73c fast_function (268c30, 2c8dc4, 1, 3d70e8, 1b00f0, 1b00f0) + c4
  0008f5ec call_function (fe108a30, 1, 8cc30, 0, 4, 156ac4) + 988
  0008cc38 PyEval_EvalFrameEx (2c8c78, 0, 0, 2c8c78, 1, 1b00f0) + 2be0
  0008e03c PyEval_EvalCodeEx (1d4a88, 1cc4b0, 0, 2639cc, 4, 0) + 838
  000e2010 function_call (1e0130, 2639c0, 0, e1ed0, 146a98, 14c8e4) + 140
  00025c28 PyObject_Call (1e0130, 2639c0, 0, 2639dc, 3, 2639c0) + 20
  0002e2ac instancemethod_call (1e0130, 2639c0, 0, 2e09c, 1249f8, 26a9ad) 
+ 210
  00025c28 PyObject_Call (26c3a0, 269a58, 0, e2730, 2, 156a5c) + 20
  0008ec2c PyEval_CallObjectWithKeywords (26c3a0, 269a58, 0, 332420, 1, 
1b00f0) + f4
  000290a4 PyInstance_New (269580, 269a58, 0, 28f88, 12462c, 14c8e4) + 
11c
  00025c28 PyObject_Call (2632d0, 269a58, 0, 0, 269a58, 269a64) + 20
  00091ba0 do_call  (2632d0, fe1091a0, ffffffff, 0, 26976c, 269760) + 94
  0008f604 call_function (fe1091a0, 3, 8cc30, 4, 3, 265754) + 9a0
  0008cc38 PyEval_EvalFrameEx (330f98, 3, 0, 330f98, 1, 1b00f0) + 2be0
  0008f73c fast_function (1da1b0, 332570, 3, 330f98, 1b00f0, 332108) + c4
  0008f5ec call_function (fe109368, 3, 8cc30, 0, 2, 156a5c) + 988
  0008cc38 PyEval_EvalFrameEx (332420, 2, 0, 332420, 1, 1b00f0) + 2be0
  0008e03c PyEval_EvalCodeEx (1d4728, 1cc4b0, 0, 26976c, 3, 2c0510) + 838
  000e2010 function_call (1e00b0, 269760, 26ddb0, e1ed0, 146a98, 14c8e4) 
+ 140
  00025c28 PyObject_Call (1e00b0, 269760, 26ddb0, 0, 26976c, 269760) + 20
  0008fe8c ext_do_call (1e00b0, fe109604, 3, ffffffff, 0, 23d4b4) + 3ec
  0008cd30 PyEval_EvalFrameEx (3, 3323d4, 0, 332298, 1, 1b00f0) + 2cd8
  0008f73c fast_function (242f30, 3cd2d4, 1, 332298, 1b00f0, 0) + c4
  0008f5ec call_function (fe1097d0, 1, 8cc30, 0, 0, 2a79f4) + 988
  0008cc38 PyEval_EvalFrameEx (3cd188, 0, 0, 3cd188, 1, 1b00f0) + 2be0
  0008e03c PyEval_EvalCodeEx (23bba8, 2398a0, 0, 25dffc, 1, 0) + 838
  000e2010 function_call (242f70, 25dff0, 0, e1ed0, 146a98, 14c8e4) + 140
  00025c28 PyObject_Call (242f70, 25dff0, 0, ff1c284c, 0, 25dff0) + 20
  0002e2ac instancemethod_call (242f70, 25dff0, 0, 2e09c, 1249f8, 0) + 
210
  00025c28 PyObject_Call (37da08, 150030, 0, 0, 0, 0) + 20
  0008ec2c PyEval_CallObjectWithKeywords (37da08, 150030, 0, 0, 0, 0) + 
f4
  000bdcc0 t_bootstrap (2c08e0, ff09d658, 1, 1, ff09c000, 0) + 1c
  ff08b01c _thread_start (2c08e0, 0, 0, 0, 0, 0) + 40