Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754196Ab0DSTVt (ORCPT ); Mon, 19 Apr 2010 15:21:49 -0400 Received: from straum.hexapodia.org ([207.7.131.186]:53852 "EHLO straum.hexapodia.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751047Ab0DSTVs (ORCPT ); Mon, 19 Apr 2010 15:21:48 -0400 Date: Mon, 19 Apr 2010 12:21:47 -0700 From: Andy Isaacson To: linux-kernel@vger.kernel.org, hch@lst.de Subject: [2.6.34 regression] utsname.domainname not set in x86_32 processes Message-ID: <20100419192147.GP11130@hexapodia.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-GPG-Fingerprint: 1914 0645 FD53 C18E EEEF C402 4A69 B1F3 68D2 A63F X-GPG-Key-URL: http://web.hexapodia.org/~adi/gpg.txt X-Domestic-Surveillance: money launder bomb tax evasion User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3397 Lines: 70 2.6.34-rc4 uname(2) from a x86_32 process copies out 325 bytes rather than the 390 bytes that 2.6.31 copied out (and that userland expects): 2.6.31.12% cat foo.c main() { char buf[1000]; memset(buf, 'x', sizeof(buf)); uname(buf); write(1, buf, sizeof(buf)); return 0; } 2.6.31.12% i686-linux-gcc foo.c 2.6.31.12% ./a.out | hd 00000000 4c 69 6e 75 78 00 00 00 00 00 00 00 00 00 00 00 |Linux...........| 00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 00000040 00 63 76 70 65 34 33 30 30 00 00 00 00 00 00 00 |.cvpe4300.......| 00000050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 00000080 00 00 32 2e 36 2e 33 31 2e 31 32 2d 63 76 70 32 |..2.6.31.12-cvp2| 00000090 30 31 30 30 33 32 39 2d 30 30 31 34 38 2d 67 39 |0100329-00148-g9| 000000a0 61 38 62 36 36 61 00 00 00 00 00 00 00 00 00 00 |a8b66a..........| 000000b0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 000000c0 00 00 00 23 36 20 53 4d 50 20 54 75 65 20 41 70 |...#6 SMP Tue Ap| 000000d0 72 20 36 20 31 36 3a 30 33 3a 33 31 20 50 44 54 |r 6 16:03:31 PDT| 000000e0 20 32 30 31 30 00 00 00 00 00 00 00 00 00 00 00 | 2010...........| 000000f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 00000100 00 00 00 00 78 38 36 5f 36 34 00 00 00 00 00 00 |....x86_64......| 00000110 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 00000140 00 00 00 00 00 28 6e 6f 6e 65 29 00 00 00 00 00 |.....(none).....| 00000150 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 00000180 00 00 00 00 00 00 78 78 78 78 78 78 78 78 78 78 |......xxxxxxxxxx| 00000190 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 |xxxxxxxxxxxxxxxx| * 000003e0 78 78 78 78 78 78 78 78 |xxxxxxxx| 000003e8 2.6.34-rc4% ./a.out | hd 00000000 4c 69 6e 75 78 00 00 00 00 00 00 00 00 00 00 00 |Linux...........| 00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 00000040 00 63 76 70 2d 6c 6f 61 6e 65 72 2d 31 36 00 00 |.cvp-loaner-16..| 00000050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 00000080 00 00 32 2e 36 2e 33 34 2d 72 63 34 2d 30 30 31 |..2.6.34-rc4-001| 00000090 31 35 2d 67 64 63 35 37 64 61 33 00 00 00 00 00 |15-gdc57da3.....| 000000a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 000000c0 00 00 00 23 36 20 53 4d 50 20 46 72 69 20 41 70 |...#6 SMP Fri Ap| 000000d0 72 20 31 36 20 31 30 3a 34 31 3a 34 33 20 50 44 |r 16 10:41:43 PD| 000000e0 54 20 32 30 31 30 00 00 00 00 00 00 00 00 00 00 |T 2010..........| 000000f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 00000100 00 00 00 00 78 38 36 5f 36 34 00 00 00 00 00 00 |....x86_64......| 00000110 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 00000140 00 00 00 00 00 78 78 78 78 78 78 78 78 78 78 78 |.....xxxxxxxxxxx| 00000150 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 |xxxxxxxxxxxxxxxx| * 000003e0 78 78 78 78 78 78 78 78 |xxxxxxxx| 000003e8 -andy -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/