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Subject: Re: fork fails after nmap with hint address in an unmapped memory region
To: cygwin AT cygwin DOT com
References: <b431898c-30f5-2847-c922-0f25a525ef76 AT yahoo DOT fr> <15510444518 DOT 20171209184819 AT yandex DOT ru>
From: "Stéphane Mbape via cygwin" <cygwin AT cygwin DOT com>
Reply-To: =?UTF-8?Q?St=c3=a9phane_Mbape?= <smbape AT yahoo DOT fr>
Message-ID: <77dab900-6ce1-6a28-b011-4d233fda408f@yahoo.fr>
Date: Sun, 10 Dec 2017 17:13:41 +0100
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Worked for me.
Thank you.

On Sun, 10 Dec 2017 14:31:09, Corinna Vinschen wrote:
> --0eh6TmSyL6TZE2Uz
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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.


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