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Date: | Thu, 16 Apr 2015 18:21:46 +0200 |
From: | Corinna Vinschen <corinna-cygwin AT cygwin DOT com> |
To: | cygwin AT cygwin DOT com |
Subject: | Re: [ANNOUNCEMENT] TEST RELEASE: Cygwin 2.0.0-5 |
Message-ID: | <20150416162146.GD3657@calimero.vinschen.de> |
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--xo44VMWPx7vlQ2+2 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Apr 16 08:17, Jim Reisert AD1C wrote: > I am unable to start Cywin/X X-server 1.17.1 with this version. > Previous releases of 2.0.0.x were OK. I had to revert to 1.7.35-1 for > the time being. >=20 > Other than updating to 2.0.0.5, I also installed the April 2015 "Patch > Tuesday" updates from Microsoft. I don't know if the two are related. > Windows 7 Home Premium, 64-bit >=20 > Exception: STATUS_ACCESS_VIOLATION at eip=3D77C50F8A > eax=3D00000000 ebx=3D612D67B0 ecx=3D00001000 edx=3D612D2648 esi=3D0000000= 0 edi=3D0028C790 > ebp=3D0028C608 esp=3D0028C604 program=3DC:\Cygwin\bin\XWin.exe, pid 1660,= thread main > cs=3D0023 ds=3D002B es=3D002B fs=3D0053 gs=3D002B ss=3D002B > Stack trace: > Frame Function Args > 0028C608 77C50F8A (00000000, 612D2648, 00000000, 612D67B0) > 0028C738 610CDA1F (000043FF, 00000000, 00000000, 80012428) > 0028C7B8 61047198 (00000000, 72483F24, 75604227, 00000254) > 0028C7F8 610F629D (00000001, 00000000, 00000000, 75623912) Ohhh...kay. This looks like a check for equality of two SIDs, the owner SID and the group SID of a file, crashing while being called from fchown. This test didn't exist up to 2.0.0-0.4 because it was addded to handle the owner =3D=3D group case. But then again, this would mean that with older versions the group SID of a file is not set. Or changed, fwiw. This might happen if either one of these SIDs is invalid or NULL, which in turn may occur if the owner or group SID can't be found in the account DB. The question is then, is your /etc/passwd or /etc/group file broken, and/or are you using the "files" only method in /etc/nsswitch.conf? I could add an extra check which refuses to change permissions if the account's SID can't be found, but since this occurs very deep in the call stack, the error message might be pretty vapid. Alternatively I just let this slip through and you might wonder why the group hasn't changed in this case. Btw., it would be nice to know why XWin tries to chown a file. Jon? Corinna --=20 Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Maintainer cygwin AT cygwin DOT com Red Hat --xo44VMWPx7vlQ2+2 Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBAgAGBQJVL+GaAAoJEPU2Bp2uRE+g3/sQAKJAruNr5KZFl6c+XnG6cd12 o6Fgi/Oy7+FBrBoMdAs/OX3WF18RhGgc/NepyU7mwT/6osMkWg2HLqd0WzNVN87Z ywpCB++8IU37CcjJuMPFDVJEyru4IW35WSl3NXgBAHsqFYqa9ZOwdUDjj5S3NOqt Emx9CCVSDZ/1kwGtAwXQ1PC7z0lKfj+fihNPynPFUos+jFb3WeH3njDHSnkTlsBB f8aw0MhsClAdmSiytSvQw0ATkCHVUsRLwy08wHsglrMD6zbu6h+MEtKcWlMpAhVL o60c3vCx+zkKhmPkov4+w2pYgknCf4G705fZ8Lo9Wik+RPCqazFZH6Y+zw1sJXtO idtFi9l/PVnWOdTl7SA5cWb7nwUeYfEFTqSt+otwB06ehdLXiqjAcYCekmH9qUXD A0v3fPtG0ACYgHs7eockwCMdTZVQENGwVTnk5Ruvk6wZlqF2PsxGgpS72s8vWgQC 7tJQYJ9F6J0VuP8gMZnDswgdSrxWmg/bGyJWKTe0ng8s9Am/i23Tm8TO7wXisNo7 j5rNj8wMx1Ncjuau09LPJcHHOoUiNxzNzczCpRSi/RdxMyrpmxTwgtV6C/jFuqpg wWXtqmHOe+WCCLKtdYfSu8K5rH6I3wpL8yW0dEr5C/UL6St4HR9ac/tF2lrcwu5Y ww9pMV2SmZs9LbkEArvG =Rbf9 -----END PGP SIGNATURE----- --xo44VMWPx7vlQ2+2--
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