From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id DF877C25B5C for ; Mon, 6 May 2024 19:09:00 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 370166B009A; Mon, 6 May 2024 15:09:00 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 2F8D76B009B; Mon, 6 May 2024 15:09:00 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 14C016B009C; Mon, 6 May 2024 15:09:00 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id E6E226B009A for ; Mon, 6 May 2024 15:08:59 -0400 (EDT) Received: from smtpin24.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 8B9AEA178B for ; Mon, 6 May 2024 19:08:59 +0000 (UTC) X-FDA: 82088908398.24.B6E62B3 Received: from NAM12-MW2-obe.outbound.protection.outlook.com (mail-mw2nam12on2049.outbound.protection.outlook.com [40.107.244.49]) by imf08.hostedemail.com (Postfix) with ESMTP id 94CA4160013 for ; Mon, 6 May 2024 19:08:55 +0000 (UTC) Authentication-Results: imf08.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b=tYYu7yJS; dmarc=pass (policy=reject) header.from=nvidia.com; arc=pass ("microsoft.com:s=arcselector9901:i=1"); spf=pass (imf08.hostedemail.com: domain of jhubbard@nvidia.com designates 40.107.244.49 as permitted sender) smtp.mailfrom=jhubbard@nvidia.com ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1715022535; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=RF6R9Dv58rdqqR0tPk4qRq3YPuNoO3Gre6afZuMBIcw=; b=TLH/543HD+lw4UJY1xcU6w8oSJSct/az15XbwQwKbLVFFVAWrTOxQLc4buQbxMygmSDZFZ K9gbA6jbp18W778sZYQmFYvmFgD1GfRqcVVYsoaOAeg7aJ/wC7+g1Omgu7SzA25CherQIN 8cwMY7Tzv1BuA3cUqWS5ty/mRU64fyk= ARC-Authentication-Results: i=2; imf08.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b=tYYu7yJS; dmarc=pass (policy=reject) header.from=nvidia.com; arc=pass ("microsoft.com:s=arcselector9901:i=1"); spf=pass (imf08.hostedemail.com: domain of jhubbard@nvidia.com designates 40.107.244.49 as permitted sender) smtp.mailfrom=jhubbard@nvidia.com ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1715022535; a=rsa-sha256; cv=pass; b=ZLXtv7+3K89EK3T/sfPL5fzddtMb+9D1o115CRyA1nIJK27MaGFBFZSGfGMkwbLUhI4Y0A TYGbIjUqhYs/8dZojfoUmRQ5CQPIVX6vW72GhKBKZ+Nyou92+c5miTLwlYa1cPH5UpXypA oivPIPhdK/KdgscoKsufpkCuSzZBSKc= ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=MCqkVKUPkBF6sJhP/KeSc31yjQ73/0E290L0PKnuFd4Dp02XVtEWLef4SjJRdTPOUlm6xGIa4oq9+iJ5TRG+KnGH4hyD4GpdUtR3eRxINGIOYM0UKC6jj/xyu4Ak4X17AumVKPHGZBXyd9oJCe/eoK8ElPHR2fihrU6K5UQEYiTWdVPmrHMJnOZOm0X5pbXh37CR/o4XTjba2ytRjPmo+sGFELUT9fKGQ6uehnZB4k6VHlv+h5lUlsTLX64xrSmdWtAi2yhn4gQfPmFTttLRXaBNaF1dTDl5TgfzJJwjokuCRT7Egu7tq0p3x0sWTL37Nc5o1W4Y139tLqT4ni7Mmg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=RF6R9Dv58rdqqR0tPk4qRq3YPuNoO3Gre6afZuMBIcw=; b=InykGEOhepajALqYQvueU+NIk/aiqqvk2OFUxSB2ssX0EdagRLmzF8JiY0okxeyYTQcTPZEcqmhi8PU7AZBRkUolk+nG3cU9V5JoQ3fXLbxYpyYHT0LgtQtFmUGQC8jE59d76zuuNOIjX90cdneT4rbvgBcfumxxNupAR/DM98JnuLOnPIM8NdyoV1hFvJD4cMGwcR3DfkK8FrGTzev5KZbDb02OjuLTINVtsTMBFLFV4ncYeQbYlmR0D0sFxQPfVFlgmNyxakgIaRrG8rYpeR6ZyowHqg6Cqh9CVuhmaeBNnsoZX+3qSvPU21G943guz/WzQmoWBQHZ58mTzKVfFw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=RF6R9Dv58rdqqR0tPk4qRq3YPuNoO3Gre6afZuMBIcw=; b=tYYu7yJSf11dyoJmeIFsSkEqygFUec0DapL3anxxdWlWa4obANxXXxCdBVKnPFr28ncZ1GKwRKOYoA7yZbk7URzcFE+2trWpZKaJZf6WFPV7Vk7HBH/hGlLrefa9exqV0u1pDh0NLetfgfVnUEWyCNbD7HHr1U4o2CItSpW8ohkubU1U8T1YNvI7DGFnxa14DVUwlH5nsCvWcWBzwjEQbdipTVNASoYBVUENabir1ixarh8Pr9SPk0Mm9A6qzLG3znfJxHSjCDTbDGBLAnclYeC378oJg2cicwuT3i08t7WFBmwKVnPP5K7NQVC6mzmknMAO5G1aAd+PfVt1AYRzUQ== Received: from BY5PR12MB4130.namprd12.prod.outlook.com (2603:10b6:a03:20b::16) by SA3PR12MB7880.namprd12.prod.outlook.com (2603:10b6:806:305::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7544.41; Mon, 6 May 2024 19:08:51 +0000 Received: from BY5PR12MB4130.namprd12.prod.outlook.com ([fe80::2cf4:5198:354a:cd07]) by BY5PR12MB4130.namprd12.prod.outlook.com ([fe80::2cf4:5198:354a:cd07%4]) with mapi id 15.20.7544.041; Mon, 6 May 2024 19:08:51 +0000 Message-ID: <1ff60e91-ac20-476b-a83e-8f9f2f797eb4@nvidia.com> Date: Mon, 6 May 2024 12:08:41 -0700 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] selftests/exec: build with -fPIE instead of -pie, to make clang happy To: Kees Cook Cc: Shuah Khan , Eric Biederman , Muhammad Usama Anjum , Mark Brown , linux-mm@kvack.org, Valentin Obst , linux-kselftest@vger.kernel.org, LKML , llvm@lists.linux.dev References: <20240504022301.35250-1-jhubbard@nvidia.com> <202405061007.F1A46E89@keescook> Content-Language: en-US From: John Hubbard In-Reply-To: <202405061007.F1A46E89@keescook> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: SJ0PR03CA0184.namprd03.prod.outlook.com (2603:10b6:a03:2ef::9) To BY5PR12MB4130.namprd12.prod.outlook.com (2603:10b6:a03:20b::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BY5PR12MB4130:EE_|SA3PR12MB7880:EE_ X-MS-Office365-Filtering-Correlation-Id: 1afdc90e-200f-4de1-28e1-08dc6dfff71e X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230031|376005|1800799015|366007|7416005; X-Microsoft-Antispam-Message-Info: =?utf-8?B?aFc4Tk1PTjBUQU8wVTVlTDFxejhETnA4NkU3R1ZDaEorV2tnMEN0RytwdzJw?= =?utf-8?B?aW5IWG1kckxoWlNPTnBDYXpUQXBEdStuUndDTXRHVjQybGQ5VWxhbnBiODJG?= =?utf-8?B?MkdaWEM3RVdsWWZOTDU1UUgyQ1ZSemVITXh2clM0SjBVVlV4bk9iUXRkNXNR?= =?utf-8?B?TnF4RDF1SXBUOFRBOVdNd1oyNFZsazlDcDVZaFFPZnY5RVZhMlc3U2VhSnJz?= =?utf-8?B?eEFXZFJYR0xBTkhycDNHY2hyNGJwNXh5WWdwbWZUSnE4RnQvUjVER09Eb3Bt?= =?utf-8?B?OE0reTYwbFlvNjdEWExYMkFuYXI2WjBnRkpYTTlkd3dKTWJlVGNuWWZtWWMz?= =?utf-8?B?RmV1Wkh6S1hGcHlYOUxwa1F2YWNkTUd0Kys5eFpGclJwcmNzeTdEcjEraGx5?= =?utf-8?B?VnNCbzlmd0lWeWY0OGxiaUVnVmdNbnUxNEZGblNESlc3N2kzaGczcVZSbUVP?= =?utf-8?B?MFZpOE5DTEtYSjlFdEdmSDVETTB5MWN3cVFtSHl3ZG95UEJ5VDhieFQ4Mis1?= =?utf-8?B?MUkxdmJQdjJ3Tk9vMlUzbW56Ukp4U0pkUy96Yml2QlBRejRpZnd3bVAxZUFs?= =?utf-8?B?WEwyT1hPRzNPZkVTZ2dRcWJ1KzdLRnpjRlhuQm51NitZZlNXV05HamJTWTNq?= =?utf-8?B?NkhOQmdQcVgrYWNUcE1UQ1k2MGlZZHdzV2VKMUgyL0gxbElpWU5hUTByK0JH?= =?utf-8?B?NXFIaFZ0NWlhVUk5ai92MUlJeFJQd3hzK3haZXZQUkVzMXQ1MlQwVjBuLzNl?= =?utf-8?B?ekN2VFgwY0ZnaHc2UlBCeUIzRXh4K0xLb1R6ZUJpWmJRM0s0ZkNoRmlJYllp?= =?utf-8?B?dkZkbkNJWmpSMjg2R0Z5eFd5RFgrQ1BreEFhdzZkY3FRTTdPQW5zZ0IvWThG?= =?utf-8?B?RFJmY1EraWxIcDZLR21TeE8yaCtqNlJUNlRxc2VRaTBzWkZkZ3dLRE1SSk1P?= =?utf-8?B?YnJHYkhQbHNTQUNiMlZiOUErZWhXcHhGenB1NzloNEMwMXJhdFhualg2OUhj?= =?utf-8?B?NER5WldjMVR6TXhwUTZ6bUhnWU9pSEcreWMxeENFYmc4akVkMDBnaHVpUlFl?= =?utf-8?B?VVFXYjRRWUk4ekYwZTA0c0loUVlMeWVRcWdvS0VMYmdNb2V4RlNqMWRQOHNT?= =?utf-8?B?MEI3aG1YRUlPTmhYZ3h5ZCt4QW44NWFsMHFCaHlCeXhFMlorK1F0cjRRdFpN?= =?utf-8?B?UU1xa2ZXKzZFVWVnc0YxbDRpZ0dxRkRBeEU4QmxjYWlkcXZZN0x1ZHJUcWc1?= =?utf-8?B?T0pBU3lCT1pRUGJpTEFWdTlSU1dCMmp1MWZzMk1JQ2JUMmNUS01EUlpqTjRw?= =?utf-8?B?T3FlMy8wZ0ZQTzViWGt5ODhTR2xTQ29pZUxXQVV5akdQWTBZdW1ZWnAzNUlN?= =?utf-8?B?SUFBa1JQYXdPT2NyNDRyT2I4YXRpM2NrajF1THV4SWVCYVpHRDNWb3locysv?= =?utf-8?B?cU5KdWhCeTB1NXVVWHZ5eXpza3dRdnpTVGE5bGpRRWJSZzk2M0tONVFZcmlZ?= =?utf-8?B?Vi92dmNhTVRtNWFtWXNvdGtZeHRxd2Y1NWFGN1Zsdkg4U3hxUlY0REVrZnZT?= =?utf-8?B?S1VvZEVWMUdVZjJKWU4zZ0ZlVjVtbkJNNTJ6WHJVZmh3N3ZMT2VpelEyZGFm?= =?utf-8?B?V2liYkRhRVF0UWRuM3FiM2NiWEtMZXNyVk1kYndCRU1yK09EYmtYTTYvTjVJ?= =?utf-8?B?NWpJWFJrYlZZbmNqZzFyR1dvRjh0bGsybXB2QXo3blF2T1RvcmllZmRBPT0=?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:BY5PR12MB4130.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(376005)(1800799015)(366007)(7416005);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?TXBYbWNUcktJelU0TkRxd0s5YzBiMnJkQ25iNmhUTHdPVHkwVEw0MmpOQk93?= =?utf-8?B?LzRKT0w2SXRZVXorYzhkTWgxVUJnSStSU3NtYXNWOFFMOHVNNFM3RmRLSzJq?= =?utf-8?B?dURLYUloemc3VEVZRVNhOVkyYUVYT0VnMmU5MGZxUitZNEVJb2ZqbmN1UGRu?= =?utf-8?B?TXlrRkVsOUt2Wm9sYlY2OVNnYU5UTzRRcm5KSTlBblQ1QWhORTlwaWtDVXpL?= =?utf-8?B?bjduaWs3ejVFNUhxQ3gzYUJlcVJkSFozTWlEUDdCT2ZvUHJialYrSnVvMkVx?= =?utf-8?B?OFViQUNhSEJHRXM5ZFdRdjRaditWdDVhMzhPM25LSlZJejNjaFMxTFRMek4z?= =?utf-8?B?L3dLeWV0US9XOS9RbEx0THpjQ1BXcm54aUVpdUNQSVBRcDNEbzgzMHhiSkFy?= =?utf-8?B?cjBDYVR2TlY3Z2FQVDQxdU5vcHZQQW9WVWplbU8zM1YySG9xdnp0MkZlU2FZ?= =?utf-8?B?WFRLK3lSeUxmRVpUU0JDZE0rWVMyYlVTQ0JpVWtoQ1BxSXNTVXkyaEdOVmtX?= =?utf-8?B?aGl6aHFYQUQ5Mlo1RWZsM09CU3ArY05YRlZJbmk4ak9sdHdvcURaN3lEbVN6?= =?utf-8?B?K0laSDNsaEFwdFlFcjRwOU12dWRKcDBraG1IWi9GbDlGaGtpdnZuL2cwTnZw?= =?utf-8?B?a2JScGJXWkpBdzBaK1lPUUV4UHc3VmRxVHYwTGEvRVVVR29ESlBWUjlDTzhP?= =?utf-8?B?emVRN1VXbHI2bTBaMG1YSi8zMDdsQXhMUVFudE91ckpiS3BWVElmcHpOU0V5?= =?utf-8?B?S1FMeDZEV0dIem1OcktZRzVobDJOb25EUnUvMWxVazRReVA2M3RzaGVQcGpV?= =?utf-8?B?N2s5YXBNTkpqTHdMVFZBOGE3RXdKMEZqOWpBQXJQd2xVdHRVM0VLMjhUQlNa?= =?utf-8?B?N2xhYVMweVlJMEtPclJwN3VQem8zNzF1RUpFM0RmY3E0WUpOemVyeG5WQndF?= =?utf-8?B?L3VHR3crQTRzbUdGUGNtMmxIZTB4NGZMdHVEbzZ4MmFGN3d6WTNrditXOGgv?= =?utf-8?B?bWkxZUhyckJqdUVWWHNDb0JjS3V2WXc1N2FIVUtubGpKNVdPck5RL29JdUpO?= =?utf-8?B?eFp1WklqZ2xJRUpjc2hBN3ZTWVZBYi9haGtoVTk3UHZoUlRNYnFVZHl4T3hp?= =?utf-8?B?eERJem9rV1hoZUU0MUJQVlRmS1l5dDlQQ2lOYnZ1R1ZVUTZ5dGJ6bVBhcW5Y?= =?utf-8?B?bmEvZnZqMUFsdVd3dFFQdldpZVlqZ2dyWUsveFdDT0FrS2tyQ3MwS04yT0Ey?= =?utf-8?B?SndWZXd0TVFjZ1VzNEpyQmkvUHJsZkU1c2tVamR0azV1RkhPSXRMT1Y3eGpq?= =?utf-8?B?UVlTeVVrWWt4Vk9PZk9UVnFaSDZ1V1p0SlZNYVM3Y3Bob0MzdkVHS2dWOTM1?= =?utf-8?B?My9uc2x0Zk1nbFkxYU5iNHF2eEE3bHZiK1BTTmVnUVBPMmYrQmZHTkFkWVls?= =?utf-8?B?eUZDZjloOGtrcTBSenllOHVudnoraWZBMDRUdzhIQy9xSGdRZWpvM0ZmUG1i?= =?utf-8?B?MzFvdllOdnh3T1hTV09SaDZ1ZmpoR2NVR25kaEZhdEV0Y1lnWkpST0szWVl4?= =?utf-8?B?K2h4bzltRzMxWGt6clVqYXpIdlp1NW82SVduMmNWTVVsWjYrM1hvdjVQYkhw?= =?utf-8?B?YUNDSWdURmx1cURnWk5wOWhkSkQveGh6MDBQUnp1Y3h5ZE16WG00Wk91VU82?= =?utf-8?B?VVNZSksrejV4cVVFT1AydUNHamdZTVNOdCs3bTZTZmdlWVowUjEwWjdXWFht?= =?utf-8?B?V2NWUXh6QUpFRGNNR3U1SHJMYU1tS2hDVzV1Z1ppYTN0ZG5UMjZOSmdMSElK?= =?utf-8?B?OVMwMmhscVRDMis3NisyalRzb054N0tINGdKNVVOZng1akNvRUNnaGYxY3Nm?= =?utf-8?B?dXlvMmwyaUw0dnZjMU1HSUdoMUdKV2NBYTJUbWZJa0diQ1hlSkJ0YmlVQWtI?= =?utf-8?B?UzNxL25pclBIWEs0T1JDZFFiUlNqMld3cmNDak1zSVdzQWw4b0JuN2xRTTFk?= =?utf-8?B?SDUxT3VBY2lJUGxjU01rUnE4S0FMVGRJTXpNUjZmblhjSVEwTU1RMmxDbmNI?= =?utf-8?B?d1AvQzJ2NXM0eXdwTXM3U1hpMTN4NUYzcHB4OEdxVUsvUmVrYkZraThEZVNR?= =?utf-8?B?N0F1aGN2dDdVSUF1SUpKaHF6aWhFbWdXL3ZzZHRPQ2hqdG9OK2NKYW9NbXZt?= =?utf-8?B?K2c9PQ==?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 1afdc90e-200f-4de1-28e1-08dc6dfff71e X-MS-Exchange-CrossTenant-AuthSource: BY5PR12MB4130.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 May 2024 19:08:51.0997 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: a8e56/MZSVPSwLv2++k098BQZeh7ebFsSphCGcMUeBJlzLLVNTvlbMgdtqqO/HiyAF7Xc1xaIoeP7+j6sB+YDg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA3PR12MB7880 X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 94CA4160013 X-Stat-Signature: eq8uqeqjjutw4ndqck4ted4etncaox4i X-Rspam-User: X-HE-Tag: 1715022535-98949 X-HE-Meta: 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 t2nse5xQ fMx4GRpWTSDx8JUo2U7gLiyw3HNEMWDK5mIl12gGMsbpPHwCB6PCkzxTpZEBF4yxYcwR/BSSc3vfwYucOSihyCyBanCoTRGtS5OBSVx1TSCLF3NLpjZ/GcckSzJ59pULvnlr5AHjBw9rG3LYI7o/ZUS0ZQn/4x99uVHFGJsxA54GKB7Y1yqh9XNzqv0jono69+mqaXumDhlhwJuFscMxV8KLrjc41lKVVjstY6T8uu0C6CkeBc/ORwsSuRQvw/u/a208/mnbWUhQCrhOX/r6ieFiG4a8W56MHho3HAbQ+kVyWicUY9A09YmnJVUnnE4p2mOibbpZFFcS3LcuUHyjbaYTZ5lLYp5WEZuZGaO5zmgHp6wv5avLltCslp3xPYh2OrQvB0N6+ygmK2pc= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 5/6/24 10:09 AM, Kees Cook wrote: > On Fri, May 03, 2024 at 07:23:01PM -0700, John Hubbard wrote: >> clang doesn't deal well with "-pie -static": it warns that -pie is an >> unused option here. Changing to "-fPIE -static" solves this problem for >> clang, while keeping the gcc results identical. >> >> The problem is visible when building via: >> >> make LLVM=1 -C tools/testing/selftests >> >> Again: gcc 13 produces identical binaries for all of these programs, >> both before and after this commit (using "-pie"), and after (using >> "-fPIE"). >> >> Also, the runtime results are the same for both clang and gcc builds. > > Thanks for this! It got solved differently here: > https://lkml.kernel.org/r/20240416152831.3199999-1-usama.anjum@collabora.com > > Does that work for you as well? > Yes it does. Please drop my patch and let's use yours instead, thanks! (As an aside, outside of the compiler sources themselves, it has proven quite difficult to find any in-depth documentation of linking options and behavior--now, and in the past.) thanks, -- John Hubbard NVIDIA