New submission from Pavel Labushev p.labus...@gmail.com:
import ctypes causes segfault on read-only filesystem
This regression was introduced in python-2.6.6 and exists in all the later
versions.
To reproduce run python -c import ctypes on read-only filesystem:
(gdb) file python3.2
Reading symbols from /usr/bin/python3.2...done.
(gdb) run -c import ctypes
Starting program: /usr/bin/python3.2 -c import ctypes
[Thread debugging using libthread_db enabled]
Program received signal SIGSEGV, Segmentation fault.
0xb7af605c in CThunkObject_dealloc (_self=0xb7b35344)
at
/var/tmp/portage/dev-lang/python-3.2_pre20110123/work/python-3.2_pre20110123/Modules/_ctypes/callbacks.c:18
18
/var/tmp/portage/dev-lang/python-3.2_pre20110123/work/python-3.2_pre20110123/Modules/_ctypes/callbacks.c:
No such file or directory.
in
/var/tmp/portage/dev-lang/python-3.2_pre20110123/work/python-3.2_pre20110123/Modules/_ctypes/callbacks.c
(gdb) bt
#0 0xb7af605c in CThunkObject_dealloc (_self=0xb7b35344)
at
/var/tmp/portage/dev-lang/python-3.2_pre20110123/work/python-3.2_pre20110123/Modules/_ctypes/callbacks.c:18
#1 0xb7af63b4 in _ctypes_alloc_callback (callable=0xb7b10bec,
converters=0xb7c4e02c, restype=0xb810c544, flags=257)
at
/var/tmp/portage/dev-lang/python-3.2_pre20110123/work/python-3.2_pre20110123/Modules/_ctypes/callbacks.c:439
#2 0xb7af1f57 in PyCFuncPtr_new (type=0xb810b0bc, args=0xb7b3618c, kwds=0x0)
at
/var/tmp/portage/dev-lang/python-3.2_pre20110123/work/python-3.2_pre20110123/Modules/_ctypes/_ctypes.c:3339
#3 0xb7ea2355 in type_call (type=0xb810b0bc, args=0xb7b3618c, kwds=0x0) at
Objects/typeobject.c:676
#4 0xb7e4f34e in PyObject_Call (func=0xb810b0bc, arg=0xb7b3618c, kw=0x0) at
Objects/abstract.c:2149
#5 0xb7eedee3 in do_call (f=0xb80fdb44, throwflag=0) at Python/ceval.c:4095
#6 call_function (f=0xb80fdb44, throwflag=0) at Python/ceval.c:3898
#7 PyEval_EvalFrameEx (f=0xb80fdb44, throwflag=0) at Python/ceval.c:2673
#8 0xb7ef0639 in PyEval_EvalCodeEx (_co=0xb7b159d0, globals=0xb7bf40b4,
locals=0xb7bf40b4, args=0x0, argcount=0, kws=0x0, kwcount=0, defs=0x0,
defcount=0,
kwdefs=0x0, closure=0x0) at Python/ceval.c:3311
#9 0xb7ef08b6 in PyEval_EvalCode (co=0xb7b159d0, globals=0xb7bf40b4,
locals=0xb7bf40b4) at Python/ceval.c:761
#10 0xb7f0121c in PyImport_ExecCodeModuleWithPathnames (name=0xbfffd9fb
ctypes, co=0xb7b159d0,
pathname=0xbfffa89b
/usr/lib/python3.2/ctypes/__pycache__/__init__.cpython-32.pyc,
cpathname=0xbfffa89b
/usr/lib/python3.2/ctypes/__pycache__/__init__.cpython-32.pyc) at
Python/import.c:809
#11 0xb7f03ce8 in load_source_module (name=value optimized out,
pathname=value optimized out, fp=0xb8020b28) at Python/import.c:1339
#12 0xb7f044f8 in load_package (name=value optimized out, pathname=value
optimized out) at Python/import.c:1435
#13 0xb7f04da7 in import_submodule (mod=value optimized out, subname=value
optimized out, fullname=0xbfffd9fb ctypes) at Python/import.c:2894
#14 0xb7f050b4 in load_next (mod=value optimized out, altmod=value optimized
out, p_name=0xbfffd9ec, buf=0xbfffd9fb ctypes, p_buflen=0xbfffd9f4)
at Python/import.c:2706
#15 0xb7f05774 in import_module_level (name=0x0, globals=value optimized out,
locals=0xb7c2035c, fromlist=0xb7f98ca0, level=0) at Python/import.c:2422
#16 0xb7f05d14 in PyImport_ImportModuleLevel (name=0xb7c0f8e8 ctypes,
globals=0xb7c2035c, locals=0xb7c2035c, fromlist=0xb7f98ca0, level=0)
at Python/import.c:2474
#17 0xb7ee73c1 in builtin___import__ (self=0xb7c6726c, args=0xb7c7b9bc,
kwds=0x0) at Python/bltinmodule.c:168
#18 0xb7e907fe in PyCFunction_Call (func=0xb7c6730c, arg=0xb7c7b9bc,
kw=0xb7b35344) at Objects/methodobject.c:84
#19 0xb7e4f34e in PyObject_Call (func=0xb7c6730c, arg=0xb7c7b9bc, kw=0x0) at
Objects/abstract.c:2149
#20 0xb7ee802f in PyEval_CallObjectWithKeywords (func=0xb7c6730c,
arg=0xb7c7b9bc, kw=0x0) at Python/ceval.c:3755
#21 0xb7eec962 in PyEval_EvalFrameEx (f=0xb8072564, throwflag=0) at
Python/ceval.c:2332
#22 0xb7ef0639 in PyEval_EvalCodeEx (_co=0xb7bdb7f0, globals=0xb7c2035c,
locals=0xb7c2035c, args=0x0, argcount=0, kws=0x0, kwcount=0, defs=0x0,
defcount=0,
kwdefs=0x0, closure=0x0) at Python/ceval.c:3311
#23 0xb7ef08b6 in PyEval_EvalCode (co=0xb7bdb7f0, globals=0xb7c2035c,
locals=0xb7c2035c) at Python/ceval.c:761
#24 0xb7f0eabc in run_mod (mod=value optimized out, filename=value optimized
out, globals=0xb7c2035c, locals=0xb7c2035c, flags=0xbfffefa8,
arena=0xb8071030) at Python/pythonrun.c:1760
#25 0xb7f0edf9 in PyRun_StringFlags (str=0xb7bf5330 import ctypes\n,
start=257, globals=0xb7c2035c, locals=0xb7c2035c, flags=0xbfffefa8)
at Python/pythonrun.c:1694
#26 0xb7f11006 in PyRun_SimpleStringFlags (command=0xb7bf5330 import
ctypes\n, flags=0xbfffefa8) at Python/pythonrun.c:1267
#27 0xb7f2477c in run_command (argc=3, argv=0xb8001018) at Modules/main.c:258
#28 Py_Main (argc=3, argv=0xb8001018) at Modules/main.c:647
#29 0xb7fffc4f in main (argc=3, argv
