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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 99891C433EF for ; Mon, 20 Dec 2021 16:38:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232970AbhLTQiI convert rfc822-to-8bit (ORCPT ); Mon, 20 Dec 2021 11:38:08 -0500 Received: from mail-eopbgr120077.outbound.protection.outlook.com ([40.107.12.77]:58080 "EHLO FRA01-PR2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S238537AbhLTQiD (ORCPT ); Mon, 20 Dec 2021 11:38:03 -0500 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=WgqhQOoVNS+Hh+6JbQJuB268OeXxnx8/1nNWRpqOADxNA/070SF1r+4MYVAuzgV4C3+KMBSclH/IivfibXqaFUZFxBaiMPhjtWBB7EPgxvRfFoqHFmNq9IF/crM1lGPEZUjzNL1fvKin4jAfSIf5dl90HFk4vATns4OVGztckORiJQiwsUl3w2AEe1iw0XP+25HU7n3aaLa+6/pYodaK6IoOuoeNs3FxRH57vnFw109lCzhIWVYe0qD+gPOr1Ehd7tbJhW3imSGyEDJ0SeDok8y/Xk4dCoz6attOBgZB5iSTpQO6d/7bfnIXXoMld1t4y2tpnEIbGh1rR3QmdHqm6A== 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=hkUh5cAB9ieefmpRNEwRIXQXXThbpQl2IIoa6w/GYfk=; b=J0kjrA9ATrph3JYAG8ZDtIw/qsdjHgJcCjD7K754Z0N2WgFiAHzJ7c/I/Qw69k6SUqalNDuNeh9+5aKRbe88uMXjQrUMz++7uNywCbB1ulDrpQs92M8g7VIbFptMxsVR/NC1XK5yyN6WhfjHRZbUb3BxCjBkWy4xr4bW1cRLSR+k8PLAmOLJ9B2GZ+knaPXzq9H+8VaiaPY0Ak5+k+3l2fz1VOG61UESrmhvZ1PrBm8+ywRzpl8PVlTw39/4PfACnrPWlymNWmJXqOUqxQ9gMbkBg5UWI7L9pzQ6ByJnZoOhV96CtMsLYrULUe6+YLxUHqXZRCGrNFqkn+aSbLWnqw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=csgroup.eu; dmarc=pass action=none header.from=csgroup.eu; dkim=pass header.d=csgroup.eu; arc=none Received: from MRZP264MB2988.FRAP264.PROD.OUTLOOK.COM (2603:10a6:501:31::15) by MR1P264MB1905.FRAP264.PROD.OUTLOOK.COM (2603:10a6:501:5::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4801.14; Mon, 20 Dec 2021 16:38:02 +0000 Received: from MRZP264MB2988.FRAP264.PROD.OUTLOOK.COM ([fe80::f0ef:856d:b0de:e85d]) by MRZP264MB2988.FRAP264.PROD.OUTLOOK.COM ([fe80::f0ef:856d:b0de:e85d%5]) with mapi id 15.20.4801.020; Mon, 20 Dec 2021 16:38:02 +0000 From: Christophe Leroy To: Josh Poimboeuf , Jiri Kosina , Miroslav Benes , Petr Mladek , Joe Lawrence , Steven Rostedt , Ingo Molnar , "Naveen N . Rao" CC: Christophe Leroy , "linux-kernel@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" , "live-patching@vger.kernel.org" Subject: [PATCH v2 01/13] livepatch: Fix build failure on 32 bits processors Thread-Topic: [PATCH v2 01/13] livepatch: Fix build failure on 32 bits processors Thread-Index: AQHX9b/0+Iw0OmIoxEmsW571E1syqw== Date: Mon, 20 Dec 2021 16:38:02 +0000 Message-ID: <5288e11b018a762ea3351cc8fb2d4f15093a4457.1640017960.git.christophe.leroy@csgroup.eu> References: In-Reply-To: Accept-Language: fr-FR, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=csgroup.eu; x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 88d957ed-fe96-421e-6758-08d9c3d7171b x-ms-traffictypediagnostic: MR1P264MB1905:EE_ x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:7691; x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 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 x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:MRZP264MB2988.FRAP264.PROD.OUTLOOK.COM;PTR:;CAT:NONE;SFS:(4636009)(366004)(508600001)(86362001)(36756003)(316002)(110136005)(6512007)(54906003)(71200400001)(6506007)(38070700005)(83380400001)(8936002)(2906002)(122000001)(6486002)(38100700002)(8676002)(44832011)(66446008)(5660300002)(66946007)(66556008)(26005)(76116006)(4326008)(91956017)(7416002)(2616005)(64756008)(186003)(66476007);DIR:OUT;SFP:1101; x-ms-exchange-antispam-messagedata-chunkcount: 1 x-ms-exchange-antispam-messagedata-0: =?iso-8859-1?Q?uW9xKlSpuRI/Cr6O0WdpKhwRdDjUkportSE6zqyOQMA/Ij+laigZm3UpDJ?= =?iso-8859-1?Q?wmzOqYLcGG9joBAJCVxZQ8rJ5KO47/9qx4Yr6d/ZyYEbSpmkfgt3m+rqE4?= =?iso-8859-1?Q?/KdcfPKGUMXKhM41y1fwfjUYWHgwQLO5HYViw+hPreJErZFGz73R3tMDUq?= =?iso-8859-1?Q?Qr9ASUGpwljqSy59EFvQCA0MzQTpzBO6xAWHEe+Ubnq96rgzfsNWB1PmpH?= =?iso-8859-1?Q?BcBaBR6T17AueLtn+xTF7tvXY/mC7fBhkYMox6og1O2ts1RNFobrAL7sSP?= =?iso-8859-1?Q?hRi6hIeCp8tXviAdRHdiw6Ib1Yb5eB+tz+U5Kc/x1GOG89WaQpUVKk9gg8?= =?iso-8859-1?Q?veMm0Q9YfX6/4Acu7NaIzMx4I2Pp1UrYG8aVjEQNgPvu4Bugdg2hWoPY1Y?= =?iso-8859-1?Q?9s5VderCAUusRgpaWJAhPNe1wARHWzXduTbhj2v4V+NSSQNYOPjQQ+lRr6?= =?iso-8859-1?Q?ohwKFEKSM7n6yggI5pXgropwLJuCpa2Nh31SF0+wpqjANNyKbwS0QZb96Z?= =?iso-8859-1?Q?rksZbybCaWckPH01rZE4MDucYOGW25O9xQvKwJxZ+7LE1IRCdTLBklYdsw?= =?iso-8859-1?Q?Srysl2iOAqOKYH+57/JdAccpjXuuLUd/dd+dj+P9dXzcpzNmuoFS9OnCjl?= =?iso-8859-1?Q?UNjXtpNiP48BhwOTUxgtIE8ragtiUxm0ZzrZN/MFJML3AvqcfShueVlwkQ?= =?iso-8859-1?Q?SUCVbFraH+oIaIZ2dD5BG+8jclUZQaZlyDg6VEVp59OAGkkEca/ZXOrFkj?= =?iso-8859-1?Q?Lu9GXQPFD0oi1Kc+bJK8vvgoG1VAiB9hqAGytgXu3vxNRwhJimsZgi+dMn?= =?iso-8859-1?Q?5Jlg8QOEZ5fb0sx4j2gRBwZR1e9F9VvgW9WJtWGPjp9TSeOHoDSPLvq3mI?= =?iso-8859-1?Q?DemDZk7IysnO0zTk08kU+EzwenL1bToaiUCS4deTrqCKseiK9KSW2W4iMX?= =?iso-8859-1?Q?aBeAgxKpM9rZbZShSHcNghWh9spV/vvv9yKtbovzXj2huBYM8VBSLUkST6?= =?iso-8859-1?Q?9y2x1loVaIR0JiY7xdZIDY2LD99TimpvcUPdFm+qDpAQr2/ILdjHYPAK67?= =?iso-8859-1?Q?+KUZpJzVqr/unlr1AJRPa+2zT09Rgk/nbskgQNDtRDfVSGlwJ3qdJorK4N?= =?iso-8859-1?Q?WFyChSq1G0K0xyvLvuWdJkH0B+hj8viJ1kbwz4SkTJcsfg2zI4RLBV9+mt?= =?iso-8859-1?Q?OBEFz2qO7zTEDkUytfkmune2Cf2SWvFgerIsYmF7Sy2JUtjW0h9U7620Lx?= =?iso-8859-1?Q?5OkDUaFnfo2W0QlmxmK7NwKGUbqrkqSeNHfLjQtgUUowsLzlVp+CPo8M3d?= =?iso-8859-1?Q?1VL01phLRnR+RqvSch+N7ZUFBIrrEnPpzjH0SItZmMadbZww1QWwp9tjBF?= =?iso-8859-1?Q?Ps39gLZlbUnoqADSkffrYnuKDmgLrJT4DomFvtt/F7NpGpbN8SiLLZCwa0?= =?iso-8859-1?Q?gDbRNxublz9o7c+LxctMQ9t6MvsjVR7MgtAEuEnynPp3+EJKHSAT99lUmN?= =?iso-8859-1?Q?g0Bnk+SSSG6TZlE8YhoH2G+OjXSiK+xpOoxh1m7QQQ5+8izIxFy8ef3ziR?= =?iso-8859-1?Q?VkyPBynwmb5MwxIwdaSC9CcW/u0+F70sYCllYN7gFAov2ZJ37g2w6mSbpb?= =?iso-8859-1?Q?i+WeCCdbtlOTKua/9oe4vDrKWZH8Cf3D2pbnuLE3Th3xQEuZ4sCb3dfCY0?= =?iso-8859-1?Q?k/cLwaO1CVkBykbzLzldsolODIIV2UdZqAiPlpWEhSJs6dA/Sn733RlvCV?= =?iso-8859-1?Q?vyB9DvcQfCxjqdo6oAWKb89rY=3D?= Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 X-OriginatorOrg: csgroup.eu X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: MRZP264MB2988.FRAP264.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-Network-Message-Id: 88d957ed-fe96-421e-6758-08d9c3d7171b X-MS-Exchange-CrossTenant-originalarrivaltime: 20 Dec 2021 16:38:02.1755 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 9914def7-b676-4fda-8815-5d49fb3b45c8 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: oavxn+I6YELkIYs5lDiiztH/nr4S5sbPte12T52ygDMf1ey5lzJ2Xvtjpy749hLi/YTCjRM4U5deE//YKjQijw1zqxb6A6obvR/J7Wa9cII= X-MS-Exchange-Transport-CrossTenantHeadersStamped: MR1P264MB1905 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Trying to build livepatch on powerpc/32 results in: kernel/livepatch/core.c: In function 'klp_resolve_symbols': kernel/livepatch/core.c:221:23: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] 221 | sym = (Elf64_Sym *)sechdrs[symndx].sh_addr + ELF_R_SYM(relas[i].r_info); | ^ kernel/livepatch/core.c:221:21: error: assignment to 'Elf32_Sym *' {aka 'struct elf32_sym *'} from incompatible pointer type 'Elf64_Sym *' {aka 'struct elf64_sym *'} [-Werror=incompatible-pointer-types] 221 | sym = (Elf64_Sym *)sechdrs[symndx].sh_addr + ELF_R_SYM(relas[i].r_info); | ^ kernel/livepatch/core.c: In function 'klp_apply_section_relocs': kernel/livepatch/core.c:312:35: error: passing argument 1 of 'klp_resolve_symbols' from incompatible pointer type [-Werror=incompatible-pointer-types] 312 | ret = klp_resolve_symbols(sechdrs, strtab, symndx, sec, sec_objname); | ^~~~~~~ | | | Elf32_Shdr * {aka struct elf32_shdr *} kernel/livepatch/core.c:193:44: note: expected 'Elf64_Shdr *' {aka 'struct elf64_shdr *'} but argument is of type 'Elf32_Shdr *' {aka 'struct elf32_shdr *'} 193 | static int klp_resolve_symbols(Elf64_Shdr *sechdrs, const char *strtab, | ~~~~~~~~~~~~^~~~~~~ Fix it by using the right types instead of forcing 64 bits types. Fixes: 7c8e2bdd5f0d ("livepatch: Apply vmlinux-specific KLP relocations early") Signed-off-by: Christophe Leroy Acked-by: Petr Mladek --- kernel/livepatch/core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c index 335d988bd811..c0789383807b 100644 --- a/kernel/livepatch/core.c +++ b/kernel/livepatch/core.c @@ -190,7 +190,7 @@ static int klp_find_object_symbol(const char *objname, const char *name, return -EINVAL; } -static int klp_resolve_symbols(Elf64_Shdr *sechdrs, const char *strtab, +static int klp_resolve_symbols(Elf_Shdr *sechdrs, const char *strtab, unsigned int symndx, Elf_Shdr *relasec, const char *sec_objname) { @@ -218,7 +218,7 @@ static int klp_resolve_symbols(Elf64_Shdr *sechdrs, const char *strtab, relas = (Elf_Rela *) relasec->sh_addr; /* For each rela in this klp relocation section */ for (i = 0; i < relasec->sh_size / sizeof(Elf_Rela); i++) { - sym = (Elf64_Sym *)sechdrs[symndx].sh_addr + ELF_R_SYM(relas[i].r_info); + sym = (Elf_Sym *)sechdrs[symndx].sh_addr + ELF_R_SYM(relas[i].r_info); if (sym->st_shndx != SHN_LIVEPATCH) { pr_err("symbol %s is not marked as a livepatch symbol\n", strtab + sym->st_name); -- 2.33.1