Re: STATUS_ACCESS_VIOLATION

[Marco Atzeri <marco.atzeri@gmail.com>]

On 9/30/2011 12:04 PM, Marc Girod wrote:
>
> Hello,
>
> I keep my installation up-to-date on a weekly basis, and never fail to
> rebaseall/peflagsall as many times as needed to be able to start emacs
> in an X session without fork errors. Then I do a perlrebase.
>
> However, I eventually get STATUS_ACCESS_VIOLATION errors, in
> various contexts, e.g. (last now) doing a dired.
> I have been keeping the *stackdump files produced, and even logging
> their contents for fear they would get overwritten.
> I note that the value of eip (instruction pointer register?) reported is
> often the same. Here are the data for the last event:
>
[cut]
>     2 [main] emacs 6660 child_copy: linked dll data write copy failed,
> 0x26B000..0x274C8C, done 0, windows pid 6692, Win32 error 487
>
>
> And I checked:
>
> ~>  net helpmsg 487
>
> Attempt to access invalid address.
>
>
> My understanding, from reading previous threads in the list, is that
> some Windows process performs DLL injection, which modifies the
> memory map of the emacs process, so that it doesn't match the
> expectation of 'ls' while being forked as part of executing 'dired'.
>
> Is there any way to identify this Windows process, or the exact DLL,
> so as to know in advance how to rebase the processes to avoid this
> conflict? Can I use the above data for that purpose?
> Or is it doomed?
> And is my understanding flawed?
>
> Thanks,
> Marc


Problem reports:       http://cygwin.com/problems.html

so at least we have an idea of your system


in addition, have you checked
http://cygwin.com/faq/faq.using.html#faq.using.bloda

Antivirus and driver are the most likely culprits.


Regards
Marco

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