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Date:	Wed, 6 Jun 2012 14:34:34 +0200
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: Windows 8 Release Preview. fork problems with rsync
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On Jun  6 12:57, Bertrand Latinville wrote:
> Hello,
> 
> I'm using cygwin 1.7.75 on Windows 8 Release Preview 64 bits.
> Bash scripts are launched via jenkins.
> 
> I'm getting some problems with rsync giving fork errors.
> This is not systematic,this happens once over 6 times.
> 
> building file list ... done
>      1 [main] rsync 1728 fhandler_dev_zero::fixup_mmap_after_fork:
> requested 0xFED00000 != 0x0 mem alloc base 0x0, state 0x10000, size
> 262144, Win32 error 487

Apparently rsync calls mmap to create an anonymous mapping.  mmap
memory areas are allocated top down.  Also top-down allocated are
the OS areas which correspond to the PEB and the TEBs.  The above
memory collision is probably one where the mmap area collides with
a TEB or PEB.  I'm testing on W* as well and I'm running a W2012
server all the time since last Friday, but I didn't observe this
problem yet.  I also can't reproduce it with some arbitrary rsync -a
command.  What rsync command are you using?


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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