[Valgrind-users] another 'cannot enable executable stack as shared object requires: Invalid argument'

[<sy...@us...>]

Hi,

I am trying to memcheck with valgrind a python script using the ctypes 
0.9.6 module:

---------------------------------------------------------------------------
$ valgrind --tool=memcheck --log-file=log --trace-syscalls=yes \
 	python -c 'import ctypes'

Traceback (most recent call last):
   File "<string>", line 1, in ?
   File "ctypes/__init__.py", line 13, in ?
     from _ctypes import Union, Structure, Array
ImportError: ./_ctypes.so: cannot enable executable stack as shared object 
requires: Invalid argument
---------------------------------------------------------------------------

I tried with valgrind 2.2, valgrind 2.4, and valgrin 2.4 from CVS (just 
extracted it Wed Apr 20 15:43:31 EDT 2005 -- I could not run valgrind 3.0 
from subversion, because I ran into a unrelated 'Illegal Instruction in 
/lib/ld-2.3.4.so' no matter how I configured it). All three versions 
report the same problem[1].

Looking at `_ctypes.so`, I coudn't see any blattant error with stack 
permission either[2]. Of course, the same script:

# python -c 'import ctypes'

run without problem by itself.

I have nothing special, like PaX, installed or running on my linux 2.6.11 
system, running glibc 2.3.4 (nptl only) on a x86 (athlon-tbird)...

Any idea?

-- 
Sylvain Fourmanoit <sy...@us...>

Simulations are like miniskirts, they show a lot and hide the essentials.
 		-- Hubert Kirrman

[1] http://adesklets.sf.net/verbatim/log.pid16866
[2] http://adesklets.sf.net/verbatim/objdump.log