Received: by 2002:a05:6359:6284:b0:131:369:b2a3 with SMTP id se4csp3281340rwb; Mon, 7 Aug 2023 10:52:05 -0700 (PDT) X-Google-Smtp-Source: AGHT+IEANWH0ZMuPEX6mQhRBlnSZkEsMK2WwcwJtcKGpI1mFqQvo0Qcdg60cS8lmfsyontaD7Lyw X-Received: by 2002:a05:6a20:7d89:b0:140:694:cd8e with SMTP id v9-20020a056a207d8900b001400694cd8emr11760260pzj.28.1691430724920; Mon, 07 Aug 2023 10:52:04 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1691430724; cv=none; d=google.com; s=arc-20160816; b=X3KuF2lA/fdZyj+ADgvtAUxISowJV93GAJP9jFPXDPZ/U01+DvI3INCx393iwL54zW Zu8pbsJjwMhfP4AfchYdc+Cs744Mkb4Wa5NqIU/bvZHUS4a6iOqtoSburb8s5ChT9n70 vJPG0aMoOJd/J8bBR3/9PYJ22q90S6KEHdxW+xWxC6PvKQw023/M2w2g8YJ4NJjYsjzW xCdaqgyjJiY9IyMbDz92gm6tZEfg3ARUVjM+chwNt9WZ10qrDoGCpS6oe0k7Sz2gSoXV uiGjlA0vRGT0q63Lm84V2O0I9NSaG9KdopT+1fqJNu9HsgPcxCcMRV2boFjB1fdW2MdL woRA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:cc:to:subject :message-id:date:from:in-reply-to:references:mime-version :dkim-signature; bh=KOMQKdmZShAbrMOCi8V+xGenD6h4CfjCRpwadFereic=; fh=Rvll+ykH1c9uw58ffhiDvS5qhIQtz/69XQCA6/3y00c=; b=SROxczE9ByUA2kawsyrWwBhorNG/FsaV3yKoWReO4Ed304OzQRwBM4Y5pkvVecWf5c R9KFTI2E4M9TVxe9B/ZC4qg60RNNTxLUCWXHPifZKOKF4W9HOM0FgTBAZa/XLPA6+HXf /reU6CgkRgywn0VdIyYisnYPxbHNfPGnxoyOAjRtcwEB43gH6WpK4pzxvtnzlcQwCZ84 4TALXJKSRoasD+KNWD/5JY/cIct7+Ud9/AG46+ul40hNh6jRzKu92rp8hr9bELV+jpDJ AaWlrDCHj7MzVf2UgVDmfrQOjE+Qbv80och7vUc/L6btDPUGLZB762wYi3EVoyN7T553 gXUw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@google.com header.s=20221208 header.b=3PEqRyFS; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id ea16-20020a056a004c1000b00686ef19c4d2si5768827pfb.325.2023.08.07.10.51.51; Mon, 07 Aug 2023 10:52:04 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20221208 header.b=3PEqRyFS; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229528AbjHGQRs (ORCPT + 99 others); Mon, 7 Aug 2023 12:17:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52896 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230238AbjHGQRq (ORCPT ); Mon, 7 Aug 2023 12:17:46 -0400 Received: from mail-oo1-xc35.google.com (mail-oo1-xc35.google.com [IPv6:2607:f8b0:4864:20::c35]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DDCE210EC for ; Mon, 7 Aug 2023 09:17:45 -0700 (PDT) Received: by mail-oo1-xc35.google.com with SMTP id 006d021491bc7-56cca35d8c3so2420955eaf.3 for ; Mon, 07 Aug 2023 09:17:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1691425065; x=1692029865; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=KOMQKdmZShAbrMOCi8V+xGenD6h4CfjCRpwadFereic=; b=3PEqRyFS+a1U3orlxEi+YML6SOG137afBBLPEYzEiHPo2p/DTaGfS4Hx5jNRreMRrO q+JneVHBLoLRmu7hFmRt8nRLkHybDNwZKj+pqqAZhCG7W+a9ki256RwbrK/ETg3Wj6VM zf+JR/4N7NFsZE8wEiQ9vD6ClFeLB0VwjJFGafE1JdlCDtGVRG6LjQLfEE9fV/DF1LKs ob0LOcliVh7f8vWqKeqE/M0UcrEsLxlTLR1fJP3q3NEcveL//bAn8/tUvOGV02RaulQ0 7oOdXMcLBuTclIv7SJ1lqrbIbA0XLHmJvbpCRc2LydVYgoOgPnt8GO+63Bv1njeOHgSW 8X1g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691425065; x=1692029865; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=KOMQKdmZShAbrMOCi8V+xGenD6h4CfjCRpwadFereic=; b=ErCaClmObD9OX0i4JTcmnBUoSvtrY97U7SxFST6qmuRTN5PrXl98jlCGGfRO7Z8aJp rZmZc2/JB7hVoHXMDd+TuiapubVoUPs6G/QfkcibQoo9QK5LMZbN254TLB9FULxYBLt3 ISK8vA76vWbgdsUglp72SKAxT4adkLwy821K+1yc1WwlfehvSI+zBG/WRgNyNznpiS3s lc/+04hgzA1s+c81joNO+dEgcn8oAuOgjP4f9yDF0mla7nLBcpHGxxo9hhjSXQY1dcbh SUex/H6nPA8ENrLhYO91s6zT6NHtuPGsQcwfGTq8J4i3thqSwfciYZQ786KysE3TfnTX GFPQ== X-Gm-Message-State: AOJu0Yxl1SgwrABA/tw1h3fV7mvF5Ng9ufFr+No9akSQ4LfJJSaH97m2 zMGfN6WHG3X9z3K60gQk7EakF4UYqD7O5TopUuwCAA== X-Received: by 2002:a05:6358:f57:b0:139:c7cb:77d7 with SMTP id c23-20020a0563580f5700b00139c7cb77d7mr2159770rwj.13.1691425064908; Mon, 07 Aug 2023 09:17:44 -0700 (PDT) MIME-Version: 1.0 References: <2023080743-amendable-moonlit-15b7@gregkh> In-Reply-To: From: Nick Desaulniers Date: Mon, 7 Aug 2023 09:17:34 -0700 Message-ID: Subject: Re: Fwd: CFI violation when reading amd_pstate/status To: =?UTF-8?Q?Jannik_Gl=C3=BCckert?= , Bagas Sanjaya Cc: Nathan Chancellor , Linux Kernel Mailing List , Linux LLVM Build Support Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-17.6 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, ENV_AND_HDR_SPF_MATCH,RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS, USER_IN_DEF_DKIM_WL,USER_IN_DEF_SPF_WL autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Aug 6, 2023 at 11:21=E2=80=AFPM Jannik Gl=C3=BCckert wrote: > > Hi Greg, > > our kernel uses the Fedora config and has a homeopathic patchset on > top of upstream - see > https://gitweb.gentoo.org/proj/linux-patches.git/tree/?h=3D6.4 except > the 50** patches. > Namely we don't touch cpufreq or pm. Can you tell us more about your distro? Is it public? Is it built with clan= g? > > > Comm: cat Tainted: P > > I am not using any out of tree modules, the kernel switches to > Tainted: P on the first CFI violation. > > Regards > Jannik > > Am Mo., 7. Aug. 2023 um 08:03 Uhr schrieb Greg Kroah-Hartman > : > > > > On Mon, Aug 07, 2023 at 06:55:49AM +0700, Bagas Sanjaya wrote: > > > Hi, > > > > > > I notice a bug report on Bugzilla [1]. Quoting from it: > > > > > > > On kernel 6.4.7, with amd_pstate=3Dactive, with a Ryzen 7700X > > > > I get a Clang CFI violation when reading /sys/devices/system/cpu/am= d_pstate/status > > > > > > > > This is reproduceable with every read, I have only tried with amd_p= state=3Dactive > > > > > > > > With the following CFI and Clang configs, Clang 16.0.6 > > > > CONFIG_CFI_CLANG=3Dy > > > > CONFIG_CFI_PERMISSIVE=3Dy > > > > CONFIG_LTO_CLANG=3Dy > > > > CONFIG_LTO_CLANG_THIN=3Dy > > > > > > > > Below is the full call trace, let me know if you need a trace with = debug info. > > > > > > > > [ 4947.849350] CFI failure at dev_attr_show+0x24/0x60 (target: show= _status+0x0/0x70; expected type: 0x8651b1de) > > > > [ 4947.849358] WARNING: CPU: 2 PID: 16519 at dev_attr_show+0x24/0x6= 0 > > > > [ 4947.849360] Modules linked in: binfmt_misc nf_conntrack_netbios_= ns nf_conntrack_broadcast wireguard curve25519_x86_64 libcurve25519_generic= ip6_udp_tunnel udp_tunnel snd_seq_dummy snd_hrtimer snd_seq rfcomm joydev = uhid xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_connt= rack_tftp nft_fib_inet nft_fib_ipv6 nft_fib_ipv4 nft_fib nft_reject_inet nf= _reject_ipv6 nf_reject_ipv4 nft_reject nft_ct nft_chain_nat bridge 8021q mr= p garp stp llc nf_tables ebtable_nat ebtable_broute ip6table_nat ip6table_m= angle ip6table_raw ip6table_security iptable_nat nf_nat nf_conntrack nf_def= rag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_raw iptable_security ip_set = nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter= ip_tables bnep vfat fat amdgpu snd_hda_codec_realtek snd_hda_codec_generic= snd_hda_codec_hdmi snd_hda_intel mt7921e vfio_pci intel_rapl_msr mt7921_co= mmon intel_rapl_common mt76_connac_lib edac_mce_amd vfio_pci_core mt76 vfio= _iommu_type1 vfio kvm_amd iommufd iommu_v2 snd_usb_audio > > > > [ 4947.849379] snd_intel_dspcfg gpu_sched snd_intel_sdw_acpi mac80= 211 drm_suballoc_helper snd_usbmidi_lib i2c_algo_bit drm_ttm_helper snd_hda= _codec btusb ttm btrtl libarc4 btmtk snd_hda_core snd_rawmidi kvm snd_seq_d= evice drm_display_helper btintel snd_hwdep mc btbcm irqbypass cfg80211 cec = snd_pcm asus_nb_wmi bluetooth eeepc_wmi snd_timer asus_wmi drm_kms_helper l= edtrig_audio sparse_keymap snd gpio_amdpt platform_profile gpio_generic drm= _buddy rfkill soundcore rapl i2c_piix4 wmi_bmof pcspkr k10temp lm92 nct6775= _core hwmon_vid fuse loop dm_crypt crct10dif_pclmul polyval_clmulni polyval= _generic ghash_clmulni_intel nvme sp5100_tco ccp r8169 nvme_core nvme_commo= n video wmi sunrpc > > > > [ 4947.849398] CPU: 2 PID: 16519 Comm: cat Tainted: P = 6.4.7-gentoo-dist-hardened #1 > > > > Can't do much about this kernel, we don't know what's really in it, > > sorry. > > > > greg k-h --=20 Thanks, ~Nick Desaulniers