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Message-ID: <0066dae8-a05b-488e-8dfb-0685e1e9f700@epam.com> Date: Wed, 17 Dec 2025 02:12:48 +0200 User-Agent: Mozilla Thunderbird Subject: Re: X86: build failure To: Andrew Cooper , "xen-devel@lists.xenproject.org" References: <8ee2e801-9a3a-414d-9df9-113f419e02e9@epam.com> <63b6f29f-29ca-458e-8d6f-3408e84173e9@citrix.com> Content-Language: en-US From: Grygorii Strashko In-Reply-To: <63b6f29f-29ca-458e-8d6f-3408e84173e9@citrix.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-ClientProxiedBy: WA2P291CA0021.POLP291.PROD.OUTLOOK.COM (2603:10a6:1d0:1e::29) To AM0PR03MB4594.eurprd03.prod.outlook.com (2603:10a6:208:c8::27) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM0PR03MB4594:EE_|AM7PR03MB6420:EE_ X-MS-Office365-Filtering-Correlation-Id: 2d3b0bce-c17e-473d-1208-08de3d010380 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|376014|1800799024; X-Microsoft-Antispam-Message-Info: =?utf-8?B?elNuVTFnTXZrMzByTjJWVy91Y1JwTnpjdVhyVnNRc3pzMVNud1RqTU8xaFBB?= =?utf-8?B?WHVMK3ZPMWp1YVE0UGxzelJmS2hJV0FVNjQzZ1FkTkxaM2VMSStjbUxzYmh2?= =?utf-8?B?cnFDRTJrNXljQ2ZzdUFPcSs4VzJ5eUdiNWZVWlhOMGJzRVlIc1ArSzlwYmdJ?= =?utf-8?B?eDVYREVMWitYbXNXWXVxckt3U0twMmFUT1VObDJqdHhDQVN6OVAvaXBLWEVB?= =?utf-8?B?Y1ZlRU45eVA4ODNlc2VMZHRBVU50MThFTGhzYmRhZzVFempFT1NVUzQvZDAw?= =?utf-8?B?Yng1eDRxRUpJek5RaytYWWpLbUg3UnlHV2lBZ3NQaHZtcFgxWTJqeHJnSTB4?= =?utf-8?B?V0pQM3g0U2dEcnRGWmNrM0pBZkNER3hOYjRJb2hWYmVjWGR2QlU2UElwN3VQ?= =?utf-8?B?K2EvMG1yQkhQUEw2Q2lpQVdHcC9ra2RRcUdBNlhGdmNkWG42dStkeVJRd2NN?= =?utf-8?B?M3R5czRQWEJKZ1hOVHFCWWRiKzZlZ0t4RlFNM2pqWnkySC9MSmVWUTQxcit5?= =?utf-8?B?dCtBSUdVU2FYOUVzWHV4Rk0wczNNVVc1UUpoSzV4eFJjdm5NQkZIeFFWZlRy?= =?utf-8?B?YUh4SVk4aWNFMjdicUNPa20za01PUmxWa0QrSmJDaEhNUDR2akZydUxyWjVu?= =?utf-8?B?K3pQNExJaVo3bHZEbFhWakpXeUJKOVlmeDNKVlJSZUViSTRwVmM3QWl4bGtU?= =?utf-8?B?dVUvVnJKbzFyRjJwdmpYUXhKanhGSmt0U3B5OFY2ZWJ4MDNMbnFkNUFvL1p1?= =?utf-8?B?Q3RVZVQ0M05QSVdtOTlvVjZlY3dEanorQy9RaU1OeXh4ckJkYzBmaGY1a0dW?= =?utf-8?B?V2ZKY0xwRHVFeDBKalJGODYvMm5CdzViNituUW5RUjNIbzB1WUd0dWU5ZXNv?= =?utf-8?B?MWt1cnJkTlZ2ZVM1REthQ0VrM0FaVzdYeWJiUWE5b1ZnSDBCeWtYbnJwMGVE?= =?utf-8?B?cnNxTWlFbEQvWXV2d2g1YzVQbExEMGk0Q2wxNndOTUQydldWL2xreW9pWXdt?= =?utf-8?B?ZUFHREVlRXlpZFhSL2NtU2dIWkJBTFJMem0vYWE5YXNNUWlxSHZVTHRaWE5x?= =?utf-8?B?cWg3N3labkJ1WE1oVzM5c0gyS01EUExBbVFLUHZKc084SXRKVWR0NnJsOVps?= =?utf-8?B?QUhEQlBFeTdMS2dNNWEzeXB1V2JYRSs3RzZSb2N3QnFXWDkweTJDMEdxR1pI?= =?utf-8?B?VXRmZWlnd09FWktveGswVlRXUHBuSVpwWEFRbDdTWlk5bWVtNFkyRW1HNDZa?= =?utf-8?B?UEp5VmU0SEI0cXZxNXBITVcrYUZacEp5NFR2ODdQT3hjMWs4Ly9ROXlRcTdw?= =?utf-8?B?amY0dlZwWmNjUjZPaUtRV1c2S0ZrTUdPYTZLK0V3dE5Hc29YUWRtZUdCR1ZY?= =?utf-8?B?ME0xZWJEWWdabDJVaVk1ZmtmWEkyVkQzUnJBWmJoS0tvY3RWSU5SMFNCQkJV?= =?utf-8?B?SnpDVG4zMHpNbmhTOXduYSszL2pSVlFCU0JQU01EV0J0VmdWWVdWaDVTOFdN?= =?utf-8?B?RjNONktZZDk1aHdrdmdJanpVMXRjYmtQQ2U2bXdNaDRDdUJ0anQvaXZ0YzNT?= =?utf-8?B?WFcyYlRZTkM3WFMvZ0RkTjNUQzVNN1VQUW9Nc2ViWm5TMUhrMXh3VVAzOXFT?= =?utf-8?B?RnNCT2pLaUVhK0JwL3lCUWlGNU0yRWhndXZheGlPSlgvbGppbU5UV1RjUFVw?= =?utf-8?B?dkY4aTV6emkvbjRvbWJzU2lSWjZqQWxsZjh1dDhsaVBXZDF4SWJXZi91QlJy?= =?utf-8?B?NW10NXpQNk5XSml1c2k0U1lIZjVxWHNxUW0raDFhUTB4ZnZuOGtDeXFwSTBE?= =?utf-8?B?WnhQSUNVZ0FrQTRmby9iTGZWM1RMSXp6RjJTVkJmUHpVYWd1LzdVS1NQaHIz?= =?utf-8?B?L1hnbFJkV2NLMm5qUCtZQ0xxM2VmSzlxT0RjdzVJS0hHdjcvV3FDOXRQTktF?= =?utf-8?Q?iNG4bLACOJgQWLk2rfnRLVRIdHPVPAr6?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AM0PR03MB4594.eurprd03.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(366016)(376014)(1800799024);DIR:OUT;SFP:1101; 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see the source for copying conditions.  There >> is NO >>  warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR >> PURPOSE. >> >> Is this known issue? >> >> ====== log =============== >>   CC      arch/x86/x86_emulate.o >> In file included from arch/x86/x86_emulate.c:27: >> arch/x86/x86_emulate/x86_emulate.c: In function ‘x86_emulate’: >> arch/x86/x86_emulate/x86_emulate.c:70:36: error: writing 1 byte into a >> region of size 0 [-Werror=stringop-overflow=] >>    70 |     gcc11_wrap(ptr)[0 - PFX_BYTES] = ext < ext_8f08 ? 0xc4 : >> 0x8f; \ >> arch/x86/x86_emulate/x86_emulate.c:78:9: note: in expansion of macro >> ‘copy_VEX’ >>    78 |         copy_VEX(ptr, vex); \ >>       |         ^~~~~~~~ >> arch/x86/x86_emulate/x86_emulate.c:8140:13: note: in expansion of >> macro ‘copy_REX_VEX’ >>  8140 |             copy_REX_VEX(opc, rex_prefix, vex); >>       |             ^~~~~~~~~~~~ >> In file included from arch/x86/x86_emulate/x86_emulate.c:11, >>                  from arch/x86/x86_emulate.c:27: >> arch/x86/x86_emulate/private.h:691:17: note: at offset [0, 4095] into >> destination object of size [0, 9223372036854775807] allocated by >> ‘map_domain_page’ >>   691 |     (stb).ptr = map_domain_page(_mfn(this_cpu(stubs.mfn))) + \ >>       |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> arch/x86/x86_emulate/x86_emulate.c:60:21: note: in expansion of macro >> ‘get_stub’ >>    60 |     uint8_t *buf_ = get_stub(stub); \ >>       |                     ^~~~~~~~ >> arch/x86/x86_emulate/x86_emulate.c:3354:15: note: in expansion of >> macro ‘init_prefixes’ >>  3354 |         opc = init_prefixes(stub); >>       |               ^~~~~~~~~~~~~ >> arch/x86/x86_emulate/private.h:691:17: note: at offset [1, 4096] into >> destination object of size [0, 9223372036854775807] allocated by >> ‘map_domain_page’ >>   691 |     (stb).ptr = map_domain_page(_mfn(this_cpu(stubs.mfn))) + \ >>       |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> arch/x86/x86_emulate/x86_emulate.c:94:21: note: in expansion of macro >> ‘get_stub’ >>    94 |     uint8_t *buf_ = get_stub(stub); \ >>       |                     ^~~~~~~~ >> arch/x86/x86_emulate/x86_emulate.c:3402:15: note: in expansion of >> macro ‘init_evex’ >>  3402 |         opc = init_evex(stub); >> [...] >> > > Hmm - that looks like more of the GCC 11 bounds bugs, but that's what > the gcc11_wrap() visible at the top is supposed to be fixing. > > Neither of those CONFIG options ought to be relevant. > > Which Ubuntu is this?  Is it something local, or from one of our CI > containers?  Is this on staging, or local? Local. Nothing special - "Ubuntu 22.04.5 LTS" ======== apt show gcc Package: gcc Version: 4:11.2.0-1ubuntu1 Priority: optional Build-Essential: yes Section: devel Source: gcc-defaults (1.193ubuntu1) Origin: Ubuntu Maintainer: Ubuntu Developers Original-Maintainer: Debian GCC Maintainers Bugs: https://bugs.launchpad.net/ubuntu/+filebug Installed-Size: 51,2 kB Provides: c-compiler, gcc-x86-64-linux-gnu (= 4:11.2.0-1ubuntu1) Depends: cpp (= 4:11.2.0-1ubuntu1), gcc-11 (>= 11.2.0-1~) Recommends: libc6-dev | libc-dev Suggests: gcc-multilib, make, manpages-dev, autoconf, automake, libtool, flex, bison, gdb, gcc-doc Conflicts: gcc-doc (<< 1:2.95.3) Task: ubuntustudio-video, ubuntustudio-publishing, ubuntu-mate-core, ubuntu-mate-desktop Download-Size: 5 112 B APT-Manual-Installed: yes APT-Sources: http://ua.archive.ubuntu.com/ubuntu jammy/main amd64 Packages Description: GNU C compiler This is the GNU C compiler, a fairly portable optimizing compiler for C. . This is a dependency package providing the default GNU C compiler. -- Best regards, -grygorii