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[issue7206] 64 bit python fails on Windows 7

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Oct 25, 2009, 4:29 PM

Post #1 of 30 (1000 views)
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[issue7206] 64 bit python fails on Windows 7

New submission from Rich Healey <richo [at] psych0tik>:

64 bit pythons fail on 64 bit Windows 7.

The crash happens with python 2.6 and 3.1 in 64 bit mode. 3.1 was a
clean install after the issue presented itself.

I'm not 100% sure how best to help with the problem, I've attached the
dump from windows debugger, please let me know if there's anything else
I can do to help.

It used to work but I'm not sure what changed, as near as I can tell
nothing system wide did, except perhaps the installation of new
compilers, my thought is that it could alter some dll search path?

Thanks in advance

richo

----------
components: Interpreter Core
files: failedPython.log
messages: 94467
nosy: richo
severity: normal
status: open
title: 64 bit python fails on Windows 7
type: crash
versions: Python 2.6, Python 3.1
Added file: http://bugs.python.org/file15197/failedPython.log

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Oct 25, 2009, 4:57 PM

Post #2 of 30 (982 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Antoine Pitrou <pitrou [at] free> added the comment:

What is "LuaPriv" in that log? Something you installed?
(sorry, not a Windows specialist)

----------
nosy: +pitrou

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Oct 25, 2009, 4:58 PM

Post #3 of 30 (981 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Changes by Antoine Pitrou <pitrou [at] free>:

----------
components: +Build, Windows
priority: -> critical

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Oct 25, 2009, 6:36 PM

Post #4 of 30 (978 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Rich Healey <richo [at] psych0tik> added the comment:

I'm not 100% sure.

I have a x64 machine running Windows 2008. I will check if it's in the
log now.

I will also check if it's in the debug trace for x86 python (which works).

RESULTS:

I get the LuaPriv initialised line on x86 python on my win7 machine
(which works).
I don't get that line on any python builds on x64 windows server 2008.

I did some googling on what it is- it's a mechanism for restricting
access. It seems that it could be causing the crash because it thinks
the application is overflowing the stack (ie, it's a DEP related issue?).
http://msdn.microsoft.com/en-us/library/dd371695(VS.85).aspx
That is a M$ link about it.

I'm fully willing to help but don't know how, I am quite novice.

Thanks

richo

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Oct 25, 2009, 7:54 PM

Post #5 of 30 (979 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Rich Healey <richo [at] psych0tik> added the comment:

I think that dump may be incorrect because it does not have all the
symbols. I will checkout source for latest 3.x trunk and attempt to
build 64 bit binaries.

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Oct 25, 2009, 10:32 PM

Post #6 of 30 (974 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Martin v. Löwis <martin [at] v> added the comment:

What kind of action has triggered that crash?

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nosy: +loewis

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Oct 25, 2009, 10:45 PM

Post #7 of 30 (974 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Rich Healey <richo [at] psych0tik> added the comment:

No action- the interpreter fails to start.

Or do you mean what changed to make it break? I'm not sure. It used to
work but I don't believe I changed anything on my system.

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Oct 26, 2009, 12:53 AM

Post #8 of 30 (975 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Martin v. Löwis <martin [at] v> added the comment:

> No action- the interpreter fails to start.

How precisely do you start the interpreter (and what interpreter precisely)?

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Oct 26, 2009, 3:36 PM

Post #9 of 30 (970 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Rich Healey <richo [at] psych0tik> added the comment:

By running the python.exe (either by double clicking it, typing it's
path into a cmd shell or by opening it in a debugger).

I tried to create a 64 bit build of the source tree which DID start, but
the hoops I had to jump through to build it with VC++ Express Edition
were so convoluted that I'm not convinced it's meaning.

I've tried this with 2.6.3 and 3.1.1 from the amd64 .msi's at
http://www.python.org/download/

(2.6.3 was the current release when I tried. I will install 2.6.4 and
let you know- although I'm not convinced it will help).

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Oct 26, 2009, 3:40 PM

Post #10 of 30 (970 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Rich Healey <richo [at] psych0tik> added the comment:

Nope- 2.6.4 fails in the same way.

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Oct 26, 2009, 3:49 PM

Post #11 of 30 (972 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Martin v. Löwis <martin [at] v> added the comment:

FWIW, these all run fine on my copy of Windows 7.

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Oct 26, 2009, 3:57 PM

Post #12 of 30 (971 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Rich Healey <richo [at] psych0tik> added the comment:

They did at first for me, and then something changed.

They now don't start. I don't have the skills to properly diagnose why,
all I can get out of my debuggers is that something is happening in
ntdll.dll

Not necessarily pointing fault at Python per se, but as it's the only
application I can find this bug in, and it's present in every amd64
version of Dolphin I try this is my first port of call.

What other info can I provide to help? I can set up a remote desktop to
this machine for a developer if they would like.

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Nov 2, 2009, 1:03 PM

Post #13 of 30 (922 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Carey <carey.metcalfe [at] gmail> added the comment:

I am having the exact same problem with both the AMD64 and 32 bit
installs. The python shell just will not open. For now I am running it
in the virtual XP machine but it is extremely slow and a fix would be
very helpful. I have tried uninstalling and reinstalling with no effect.
I too am willing to set up a remote desktop connection if it would help.

Windows 7 Pro RTM, Intel Core 2 Duo

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nosy: +Carey

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Nov 2, 2009, 1:26 PM

Post #14 of 30 (926 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Martin v. Löwis <martin [at] v> added the comment:

By "exactly the same problem", do you mean that your installation also
runs into a break instruction in ntdll!CsrSetPriorityClass+0x40? Can you
please also attach the debugger log (unless it's byte-for-byte identical
with the one from richo)?

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Nov 2, 2009, 1:37 PM

Post #15 of 30 (922 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Carey <carey.metcalfe [at] gmail> added the comment:

i don't know how to do that. Is there an integrated debugger within
Windows 7? My program just doesn't open, it doesn't display any error
messages at all.

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Nov 2, 2009, 1:44 PM

Post #16 of 30 (922 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Martin v. Löwis <martin [at] v> added the comment:

> i don't know how to do that. Is there an integrated debugger within
> Windows 7? My program just doesn't open, it doesn't display any error
> messages at all.

Ok. So I'm skeptical that this is the same bug (having roughly the same
symptom is not convincing). If you want it studied, please report it
separately.

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Nov 3, 2009, 7:34 PM

Post #17 of 30 (909 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Rich Healey <richo [at] psych0tik> added the comment:

Carey I can send you the steps I used to create the dump if you like so we
can check if it's the same issue?

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Nov 4, 2009, 6:43 AM

Post #18 of 30 (898 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Carey <carey.metcalfe [at] gmail> added the comment:

yes, please do

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Nov 4, 2009, 3:37 PM

Post #19 of 30 (882 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Rich Healey <richo [at] psych0tik> added the comment:

Download the debugging suite from
http://www.microsoft.com/whdc/devtools/debugging/install64bit.mspx#

Open windbg
Press Ctrl + E to load an executable
Select your python binary
Step through by typing g in the text box at the bottom of the Command
window.

The application will fail to crash completely as windbg will catch the
exception, however you should notice that it's spitting out duplicate
errors after a few breaks.

Paste up your log :)

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Nov 4, 2009, 5:31 PM

Post #20 of 30 (877 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Carey <carey.metcalfe [at] gmail> added the comment:

I dont know if what i did was right but heres my log

Microsoft (R) Windows Debugger Version 6.11.0001.404 AMD64
Copyright (c) Microsoft Corporation. All rights reserved.

CommandLine: C:\Python31\pythonw.exe
Symbol search path is: srv*
Executable search path is:
ModLoad: 00000000`1d000000 00000000`1d00b000 pythonw.exe
ModLoad: 00000000`76f20000 00000000`770cb000 ntdll.dll
ModLoad: 00000000`76e00000 00000000`76f1f000
C:\Windows\system32\kernel32.dll
ModLoad: 000007fe`fd1e0000 000007fe`fd24b000
C:\Windows\system32\KERNELBASE.dll
ModLoad: 00000000`1e000000 00000000`1e2b0000
C:\Windows\system32\python31.dll
ModLoad: 00000000`76d00000 00000000`76dfa000
C:\Windows\system32\USER32.dll
ModLoad: 000007fe`ff1c0000 000007fe`ff227000 C:\Windows\system32\GDI32.dll
ModLoad: 000007fe`ff1b0000 000007fe`ff1be000 C:\Windows\system32\LPK.dll
ModLoad: 000007fe`fd380000 000007fe`fd44a000 C:\Windows\system32\USP10.dll
ModLoad: 000007fe`fdb30000 000007fe`fdbcf000
C:\Windows\system32\msvcrt.dll
ModLoad: 000007fe`fda50000 000007fe`fdb2b000
C:\Windows\system32\ADVAPI32.dll
ModLoad: 000007fe`fdd00000 000007fe`fdd1f000
C:\Windows\SYSTEM32\sechost.dll
ModLoad: 000007fe`fd250000 000007fe`fd37e000
C:\Windows\system32\RPCRT4.dll
ModLoad: 000007fe`fdf00000 000007fe`fec86000
C:\Windows\system32\SHELL32.dll
ModLoad: 000007fe`fec90000 000007fe`fed01000
C:\Windows\system32\SHLWAPI.dll
ModLoad: 00000000`730a0000 00000000`7313d000
C:\Windows\WinSxS\amd64_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.4926_none_08e1a05ba83fe554\MSVCR90.dll
(1284.19dc): Break instruction exception - code 80000003 (first chance)
ntdll!LdrpDoDebuggerBreak+0x30:
00000000`76fd1220 cc int 3
0:000> g
ModLoad: 000007fe`fcd50000 000007fe`fcda7000
C:\Windows\system32\apphelp.dll
ModLoad: 000007fe`fd810000 000007fe`fd83e000 C:\Windows\system32\IMM32.DLL
ModLoad: 000007fe`fed90000 000007fe`fee99000 C:\Windows\system32\MSCTF.dll
ntdll!NtTerminateProcess+0xa:
00000000`76f7017a c3 ret
0:000> g
^ No runnable debuggees error in 'g'
0:000> g
^ No runnable debuggees error in 'g'

It seems it cant find a file that it needs, but i dont know why.
Obviously this is a different issue

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Nov 4, 2009, 5:47 PM

Post #21 of 30 (877 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Rich Healey <richo [at] psych0tik> added the comment:

Carey: You need to run python.exe, pythonw.exe does not create a console
window and is for running python scripts that have their own GUI.

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Nov 4, 2009, 6:38 PM

Post #22 of 30 (873 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Carey <carey.metcalfe [at] gmail> added the comment:

python.exe works fine. It's IDLE that doesn't work and it uses pythonw.exe.

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Nov 4, 2009, 8:47 PM

Post #23 of 30 (875 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Martin v. Löwis <martin [at] v> added the comment:

> python.exe works fine. It's IDLE that doesn't work and it uses pythonw.exe.

So please report this as a separate bug. For the OP, python.exe crashes.

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Nov 4, 2009, 10:24 PM

Post #24 of 30 (873 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Rich Healey <richo [at] psych0tik> added the comment:

Precisely.

Martin: What more can I do to help? I really need 64 bit Python working
on this machine but am running out of things I can do.

Am happy to put in the hard yards, just need clarification about what I
should be doing.

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Nov 5, 2009, 12:11 AM

Post #25 of 30 (872 views)
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[issue7206] 64 bit python fails on Windows 7 [In reply to]

Martin v. Löwis <martin [at] v> added the comment:

> Am happy to put in the hard yards, just need clarification about what I
> should be doing.

The only thing I can think of is debugging. Install visual studio,
create a debug build of Python, hope that it will still crash, and
debug why it does. Alternatively, run the release build in a debugger...

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