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 237ABC433F5 for ; Mon, 6 Dec 2021 20:32:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349720AbhLFUfp (ORCPT ); Mon, 6 Dec 2021 15:35:45 -0500 Received: from sin.source.kernel.org ([145.40.73.55]:37238 "EHLO sin.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229867AbhLFUfn (ORCPT ); Mon, 6 Dec 2021 15:35:43 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sin.source.kernel.org (Postfix) with ESMTPS id 6293CCE180B for ; Mon, 6 Dec 2021 20:32:13 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8F6CFC341C6 for ; Mon, 6 Dec 2021 20:32:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1638822731; bh=PpbneIl9UbCtnJCrGClHEOavMhFrhAMlJPtwupxH8ss=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=Z9R6nTEvhCxJCyLShRLgQUGW9QTRQC/0pjE4wBdCppP8jzL0q3CjU1JHS2vvLrWX1 jtVLfYOfVePMWAcNDMODh8FZOTCfq9G82mzgiNUAeucvxzRUduPvK56PeD9Bovc2Qm CSYcEIThHWkTn2LF+bTRZzGYNoLFenR7Y0bkadMdkT3At96OZMnJ6kOetQDzakSMGv wbE0szS0Cc3u+Va/ubckZgd7/HdAWvJVe7YkGo2pRf+C2mylCPQcoNidWdfEy4gJQ2 5PMRBijj4HGPQit1CGrRbMW6fL64Gb89EWBVVb4CMMpgqQBSJ7E8LqWVQ42RWAvIEJ VwivM01Cte6fw== Received: by mail-ed1-f44.google.com with SMTP id l25so47798122eda.11 for ; Mon, 06 Dec 2021 12:32:11 -0800 (PST) X-Gm-Message-State: AOAM530hKJ/+AjoIKFo4F+CkQ07NInabTghi1tbbVSs71StuwrnaNrby 0K2MqhKEpmPjAiYVJkWqETjlf0R5/16L0ct9AA== X-Google-Smtp-Source: ABdhPJwHHjaGDe+Z5pMSCRWZlbAmPIhxTCvuANX+k49kHNk3+pxODqBMVcGuMcdtcqNWs13V/5izM69x62MHG6PS54Y= X-Received: by 2002:a05:6402:4251:: with SMTP id g17mr2007287edb.89.1638822729777; Mon, 06 Dec 2021 12:32:09 -0800 (PST) MIME-Version: 1.0 References: <202111280304.FL2314qf-lkp@intel.com> In-Reply-To: <202111280304.FL2314qf-lkp@intel.com> From: Rob Herring Date: Mon, 6 Dec 2021 14:31:58 -0600 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: arch/arm64/kernel/machine_kexec_file.c:152 load_other_segments() warn: missing error code 'ret' To: Dan Carpenter , Lakshmi Ramasubramanian Cc: kbuild@lists.01.org, lkp@intel.com, kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Thiago Jung Bauermann Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Dec 1, 2021 at 5:47 AM Dan Carpenter wro= te: > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.gi= t master > head: c5c17547b778975b3d83a73c8d84e8fb5ecf3ba5 > commit: ac10be5cdbfa852139658d52c2f1c608782ce992 arm64: Use common of_kex= ec_alloc_and_setup_fdt() > config: arm64-randconfig-m031-20211127 (https://download.01.org/0day-ci/a= rchive/20211128/202111280304.FL2314qf-lkp@intel.com/config) > compiler: aarch64-linux-gcc (GCC) 11.2.0 > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot > Reported-by: Dan Carpenter > > smatch warnings: > arch/arm64/kernel/machine_kexec_file.c:152 load_other_segments() warn: mi= ssing error code 'ret' Lakshmi, Can you please prepare a fix for this. It's been reported since Ju= ly. > > vim +/ret +152 arch/arm64/kernel/machine_kexec_file.c > > 52b2a8af743604 AKASHI Takahiro 2018-11-15 81 int load_other_se= gments(struct kimage *image, > 52b2a8af743604 AKASHI Takahiro 2018-11-15 82 = unsigned long kernel_load_addr, > 52b2a8af743604 AKASHI Takahiro 2018-11-15 83 = unsigned long kernel_size, > 52b2a8af743604 AKASHI Takahiro 2018-11-15 84 = char *initrd, unsigned long initrd_len, > 52b2a8af743604 AKASHI Takahiro 2018-11-15 85 = char *cmdline) > 52b2a8af743604 AKASHI Takahiro 2018-11-15 86 { > 52b2a8af743604 AKASHI Takahiro 2018-11-15 87 struct ke= xec_buf kbuf; > 3751e728cef290 AKASHI Takahiro 2019-12-16 88 void *hea= ders, *dtb =3D NULL; > 108aa503657ee2 Benjamin Gwin 2020-11-03 89 unsigned = long headers_sz, initrd_load_addr =3D 0, dtb_len, > 108aa503657ee2 Benjamin Gwin 2020-11-03 90 = orig_segments =3D image->nr_segments; > 52b2a8af743604 AKASHI Takahiro 2018-11-15 91 int ret = =3D 0; > 52b2a8af743604 AKASHI Takahiro 2018-11-15 92 > 52b2a8af743604 AKASHI Takahiro 2018-11-15 93 kbuf.imag= e =3D image; > 52b2a8af743604 AKASHI Takahiro 2018-11-15 94 /* not al= locate anything below the kernel */ > 52b2a8af743604 AKASHI Takahiro 2018-11-15 95 kbuf.buf_= min =3D kernel_load_addr + kernel_size; > 52b2a8af743604 AKASHI Takahiro 2018-11-15 96 > 3751e728cef290 AKASHI Takahiro 2019-12-16 97 /* load e= lf core header */ > 3751e728cef290 AKASHI Takahiro 2019-12-16 98 if (image= ->type =3D=3D KEXEC_TYPE_CRASH) { > 3751e728cef290 AKASHI Takahiro 2019-12-16 99 r= et =3D prepare_elf_headers(&headers, &headers_sz); > 3751e728cef290 AKASHI Takahiro 2019-12-16 100 i= f (ret) { > 3751e728cef290 AKASHI Takahiro 2019-12-16 101 = pr_err("Preparing elf core header failed\n"); > 3751e728cef290 AKASHI Takahiro 2019-12-16 102 = goto out_err; > 3751e728cef290 AKASHI Takahiro 2019-12-16 103 } > 3751e728cef290 AKASHI Takahiro 2019-12-16 104 > 3751e728cef290 AKASHI Takahiro 2019-12-16 105 k= buf.buffer =3D headers; > 3751e728cef290 AKASHI Takahiro 2019-12-16 106 k= buf.bufsz =3D headers_sz; > 3751e728cef290 AKASHI Takahiro 2019-12-16 107 k= buf.mem =3D KEXEC_BUF_MEM_UNKNOWN; > 3751e728cef290 AKASHI Takahiro 2019-12-16 108 k= buf.memsz =3D headers_sz; > 3751e728cef290 AKASHI Takahiro 2019-12-16 109 k= buf.buf_align =3D SZ_64K; /* largest supported page size */ > 3751e728cef290 AKASHI Takahiro 2019-12-16 110 k= buf.buf_max =3D ULONG_MAX; > 3751e728cef290 AKASHI Takahiro 2019-12-16 111 k= buf.top_down =3D true; > 3751e728cef290 AKASHI Takahiro 2019-12-16 112 > 3751e728cef290 AKASHI Takahiro 2019-12-16 113 r= et =3D kexec_add_buffer(&kbuf); > 3751e728cef290 AKASHI Takahiro 2019-12-16 114 i= f (ret) { > 3751e728cef290 AKASHI Takahiro 2019-12-16 115 = vfree(headers); > 3751e728cef290 AKASHI Takahiro 2019-12-16 116 = goto out_err; > 3751e728cef290 AKASHI Takahiro 2019-12-16 117 } > 7b558cc3564e6c Lakshmi Ramasubramanian 2021-02-21 118 i= mage->elf_headers =3D headers; > 7b558cc3564e6c Lakshmi Ramasubramanian 2021-02-21 119 i= mage->elf_load_addr =3D kbuf.mem; > 7b558cc3564e6c Lakshmi Ramasubramanian 2021-02-21 120 i= mage->elf_headers_sz =3D headers_sz; > 3751e728cef290 AKASHI Takahiro 2019-12-16 121 > 3751e728cef290 AKASHI Takahiro 2019-12-16 122 p= r_debug("Loaded elf core header at 0x%lx bufsz=3D0x%lx memsz=3D0x%lx\n", > 7b558cc3564e6c Lakshmi Ramasubramanian 2021-02-21 123 = image->elf_load_addr, kbuf.bufsz, kbuf.memsz); > 3751e728cef290 AKASHI Takahiro 2019-12-16 124 } > 3751e728cef290 AKASHI Takahiro 2019-12-16 125 > 52b2a8af743604 AKASHI Takahiro 2018-11-15 126 /* load i= nitrd */ > 52b2a8af743604 AKASHI Takahiro 2018-11-15 127 if (initr= d) { > 52b2a8af743604 AKASHI Takahiro 2018-11-15 128 k= buf.buffer =3D initrd; > 52b2a8af743604 AKASHI Takahiro 2018-11-15 129 k= buf.bufsz =3D initrd_len; > c19d050f808812 Bhupesh Sharma 2019-07-11 130 k= buf.mem =3D KEXEC_BUF_MEM_UNKNOWN; > 52b2a8af743604 AKASHI Takahiro 2018-11-15 131 k= buf.memsz =3D initrd_len; > 52b2a8af743604 AKASHI Takahiro 2018-11-15 132 k= buf.buf_align =3D 0; > 52b2a8af743604 AKASHI Takahiro 2018-11-15 133 /= * within 1GB-aligned window of up to 32GB in size */ > 52b2a8af743604 AKASHI Takahiro 2018-11-15 134 k= buf.buf_max =3D round_down(kernel_load_addr, SZ_1G) > 52b2a8af743604 AKASHI Takahiro 2018-11-15 135 = + (unsigned long)SZ_1G * 32; > 52b2a8af743604 AKASHI Takahiro 2018-11-15 136 k= buf.top_down =3D false; > 52b2a8af743604 AKASHI Takahiro 2018-11-15 137 > 52b2a8af743604 AKASHI Takahiro 2018-11-15 138 r= et =3D kexec_add_buffer(&kbuf); > 52b2a8af743604 AKASHI Takahiro 2018-11-15 139 i= f (ret) > 52b2a8af743604 AKASHI Takahiro 2018-11-15 140 = goto out_err; > 52b2a8af743604 AKASHI Takahiro 2018-11-15 141 i= nitrd_load_addr =3D kbuf.mem; > 52b2a8af743604 AKASHI Takahiro 2018-11-15 142 > 52b2a8af743604 AKASHI Takahiro 2018-11-15 143 p= r_debug("Loaded initrd at 0x%lx bufsz=3D0x%lx memsz=3D0x%lx\n", > 51075e0cb759a7 =C5=81ukasz Stelmach 2020-04-30 144 = initrd_load_addr, kbuf.bufsz, kbuf.memsz); > 52b2a8af743604 AKASHI Takahiro 2018-11-15 145 } > 52b2a8af743604 AKASHI Takahiro 2018-11-15 146 > 52b2a8af743604 AKASHI Takahiro 2018-11-15 147 /* load d= tb */ > ac10be5cdbfa85 Rob Herring 2021-02-21 148 dtb =3D o= f_kexec_alloc_and_setup_fdt(image, initrd_load_addr, > ac10be5cdbfa85 Rob Herring 2021-02-21 149 = initrd_len, cmdline, 0); > ac10be5cdbfa85 Rob Herring 2021-02-21 150 if (!dtb)= { > 52b2a8af743604 AKASHI Takahiro 2018-11-15 151 p= r_err("Preparing for new dtb failed\n"); > 52b2a8af743604 AKASHI Takahiro 2018-11-15 @152 g= oto out_err; > ^= ^^^^^^^^^^^^ > This needs an error code. > > --- > 0-DAY CI Kernel Test Service, Intel Corporation > https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org >