From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 118627 invoked by alias); 3 Dec 2015 22:52:25 -0000 Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Received: (qmail 118617 invoked by uid 89); 3 Dec 2015 22:52:24 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=4.8 required=5.0 tests=AWL,BAYES_20,KAM_LAZY_DOMAIN_SECURITY,RCVD_IN_PBL,RDNS_DYNAMIC autolearn=no version=3.3.2 X-HELO: calimero.vinschen.de Received: from ipbcc02fe8.dynamic.kabel-deutschland.de (HELO calimero.vinschen.de) (188.192.47.232) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Thu, 03 Dec 2015 22:52:23 +0000 Received: by calimero.vinschen.de (Postfix, from userid 500) id 72E01A80576; Thu, 3 Dec 2015 23:52:21 +0100 (CET) Date: Thu, 03 Dec 2015 22:52:00 -0000 From: Corinna Vinschen To: cygwin@cygwin.com Subject: Re: fork issue when lauching cygwin64 process from 32bit native app on Windows 10 TH2 Message-ID: <20151203225221.GR18447@calimero.vinschen.de> Reply-To: cygwin@cygwin.com Mail-Followup-To: cygwin@cygwin.com References: <565D762E.4090109@gmail.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="2VXyA7JGja7B50zs" Content-Disposition: inline In-Reply-To: <565D762E.4090109@gmail.com> User-Agent: Mutt/1.5.23 (2014-03-12) X-SW-Source: 2015-12/txt/msg00040.txt.bz2 --2VXyA7JGja7B50zs Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Content-length: 1078 On Dec 1 19:27, nu774 wrote: > After upgrading to Windows 10 TH2 (ver 1511, build 10586), any attempt > to launch a cygwin64 process from 32bit native app (for example, > C:\windows\syswow64\cmd.exe) *always* results in a fork error. >=20 > To be precise, I can execute 64bit bash.exe from 32bit cmd.exe. > However, this bash process never succeeds in forking a child (ls or > something). > Also, I cannot launch 64bit mintty.exe from 32bit cmd.exe. It always > fails in a error dialog saying that: >=20 > mintty: could not detach from caller > Try '--help' for more information. >=20 > When launching from 64bit app, this issue doesn't happen. I created a workaround for this issue and uploaded new developer snapshots to https://cygwin.com/snapshots, as well as a new Cygwin test release 2.4.0-0.7 with this change (https://cygwin.com/ml/cygwin-announce/2015-12/msg00001.html) Please give any of them a try. Thanks, Corinna --=20 Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Maintainer cygwin AT cygwin DOT com Red Hat --2VXyA7JGja7B50zs Content-Type: application/pgp-signature Content-length: 819 -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBCAAGBQJWYMelAAoJEPU2Bp2uRE+gnNMP/3h4ultWQlUVkQVsnAtOMG8U 8OMaPtCrDlBijnOhBxfsv43yRQUAx9EsWQxMebDfIL3Y2PILZjs8RuB4c3rfRcKR FWXM5PT0mZw6cq99CDJOvM97bOEvXVWzYmNvk/QWmc/7doLEgfsjKTZbr10B5E/g 6/36ZzlfCeX0jFJk45MOdkwptIXtFaZznmkeEsds1yYXae3ZbJ4upFS7Zl6axpNO VD0nse/jJ1T9495BIZmAEVeNzDs9YWQAVyN8POd0kTsp13M0UmoBug1OyWMhIq/M l9MNpdNk3fHFdfNsaGCq//kO4K75Mf9WXguLer9CL0EviqO+51BtYPjkq5t8FmaJ 6jkzbepL8ML6fsv29x9oNmLjSe+WOPbKMianNmUpUtPNKJCjr3UjlI2EA2mU8fNM O1t+azp3H4MTM1OgHz7aw7ATMnHDlYXHJsblTP6xOdtJTPtTuxm3rPorcIh5MG/H HGLo02v7ifeyuoH03lFX84HlTXZhYSl9+IVQBlogz+DvmiRbrYgwxrJvFCh72wv2 /HV6JAX2MozTdwHDJOaMrbO0mnF6+tKEOT1I7r26b3NI5vrnox6H5FZ9RP1sLtpy MrI4frg9AQkWi1HJUaHZsmgvdh4XVe1coiKcphL1X9O10buB8gvCr2T812PsrpAL cNBR6vwSFfQmPvIGMdlJ =T7i5 -----END PGP SIGNATURE----- --2VXyA7JGja7B50zs--