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X-HELO: drew.franken.de
Date: Sun, 10 Dec 2017 14:31:09 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: fork fails after nmap with hint address in an unmapped memory region
Message-ID: <20171210133109.GK18791@calimero.vinschen.de>
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References: <b431898c-30f5-2847-c922-0f25a525ef76 AT yahoo DOT fr>
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On Dec  9 15:58, St=C3=A9phane Mbape via cygwin wrote:
> Hello,
>=20
> While embeding luajit in a c=C2=A0 program, I found myself unable to fork
> processes.
> Investigations prove that it was related to nmap.
> To be accurate, calling nmap with hint address in a unmapped memory region
> will cause all forks to fail with
> "fixup_mmaps_after_fork: ReadProcessMemory failed for MAP_PRIVATE address
> 0x6FFFFFE0000, Win32 error 299"
>=20
> There is a sample code below.
>=20
> Thank you for reading.

Thank you for the testcase.  I pushed a patch and uploaded new developer
snapshots to https://cygwin.com/snapshots.  Please test.


Thanks,
Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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