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Date: Wed, 13 Jan 2010 19:21:48 -0500
Message-ID: <a13b5a591001131621m7cca5028y801ce5231dea6c93@mail.gmail.com>
Subject: Re: Possible BSOD from getcwd on WinXP SP3
From: Robert Pendell <shinji AT elite-systems DOT org>
To: cygwin AT cygwin DOT com
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On Wed, Jan 13, 2010 at 10:57 AM, Eric Blake <ebb9 AT byu DOT net> wrote:
> Henson, George A CTR USA MEDCOM JMLFDC
> writes:
>
>>
>> Hello,
>>
>> Building tar seems to trigger a Blue Screen Of Death on WinXP.
>
> Rather, it is triggering a bug in your ntfs.sys driver. =C2=A0Cygwin is a=
 user app,
> and as such, cannot cause a BSOD. =C2=A0Only drivers can do that.
>
>> The only information I have been able to get out of the Windows crash
>> dumps is the fault happens somewhere in the ntfs.sys driver.
>
> Report this to whoever provided the driver. =C2=A0Meanwhile, you can work=
 around it
> via:
>
> ./configure gl_cv_func_getcwd_path_max=3Dyes
>
> to prime the cache and skip that check (I do that anyways on my XP machin=
e, in
> my /usr/local/share/config.site file, not because my driver is buggy, but
> because Microsoft has acknowledged that XP has quadratic handling of long=
 path
> names, and that Vista or newer have linear handling; the quadratic handli=
ng
> makes the test spin for minutes at 100% CPU utilization, attributable to =
system
> call churn rather than application action). =C2=A0Also, that check is rep=
eated among
> tar, coreutils, findutils, and a few other GNU packages.
>
> And for the record, I've also noticed that sysinternal's procexp can cras=
h the
> system when trying to examine the run of that particular conftest.exe wit=
h very
> deep hierarchies.
>
> --
> Eric Blake
> volunteer cygwin tar maintainer
>
>
>
> --
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imple
>
>

Something tells me it isn't the ntfs.sys driver causing it anyways.
That's just me though.

George -- Any chance you might be able to check for and email me the
minidump crash files from your windows\minidump folder?  You can zip
up all of the ones in there and send them to my private email if you
like.  I'll run them through windows windbg and see what it says the
culprit is.  I know it won't guarantee that we will find the culprit
but we might get close.

Eric -- The ntfs.sys driver is 99% of the time stock Windows.  There
is never any need for a company to provide another ntfs.sys driver
file.  If the trigger happened it was likely something associated with
the file but probably not that file itself.  Maybe storage drivers.

Robert Pendell
shinji AT elite-systems DOT org
CAcert Assurer
"A perfect world is one of chaos."

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