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 E3433EB64DD for ; Sat, 5 Aug 2023 08:42:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229549AbjHEImo (ORCPT ); Sat, 5 Aug 2023 04:42:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59358 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229636AbjHEImn (ORCPT ); Sat, 5 Aug 2023 04:42:43 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E78B711B for ; Sat, 5 Aug 2023 01:42:33 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 8486B60BA2 for ; Sat, 5 Aug 2023 08:42:33 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id DF507C433C7 for ; Sat, 5 Aug 2023 08:42:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1691224952; bh=kd0iTlPQjYrqyaUZrOusz9X20n6FY0aG2B6v5WwYGlg=; h=From:To:Subject:Date:From; b=Kcnqr0Qa23XOHEQNE5PvcF12DBhuNFEZKClO/Yt5qAQ5Sr+IGnr2c+yzDsRj+aZjR sOytT4stupWOzJakhpZo5rtLBWUA0O2OJtcyCMYZs4Vq3JFmvfb+LQWNZWMsiw8WIQ +XKpUB+AAmyPWW8IBbeX7x7BzViMtyTh36PwtHuhrJK5+rCUCH+W97GbFkE9f5AVAC P7f4hlnfNYJq7F2miNPXCak53s2B0+7ORi9iIh1WHSz+M8eL8f8+5tiFMRiC/oo5oK 9KJgvmLriURwM7/Y+ykfpOqcFfVlexKgSAD+6MvsZs9Pty/gBEL8spLcWrl/NUX+5Z wSJISM7nnPaHQ== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id B1E89C53BC6; Sat, 5 Aug 2023 08:42:32 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-pm@vger.kernel.org Subject: [Bug 217765] New: CFI violation when reading amd_pstate/status Date: Sat, 05 Aug 2023 08:42:32 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Power Management X-Bugzilla-Component: cpufreq X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: jannik.glueckert@gmail.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: linux-pm@vger.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter cf_regression Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=3D217765 Bug ID: 217765 Summary: CFI violation when reading amd_pstate/status Product: Power Management Version: 2.5 Hardware: AMD OS: Linux Status: NEW Severity: normal Priority: P3 Component: cpufreq Assignee: linux-pm@vger.kernel.org Reporter: jannik.glueckert@gmail.com Regression: No 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/amd_pstate/status This is reproduceable with every read, I have only tried with amd_pstate=3D= active 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 in= fo. [ 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+0x24/0x60 [ 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 u= hid xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_= tftp nft_fib_inet nft_fib_ipv6 nft_fib_ipv4 nft_fib nft_reject_inet nf_reject_ip= v6 nf_reject_ipv4 nft_reject nft_ct nft_chain_nat bridge 8021q mrp garp stp llc nf_tables ebtable_nat ebtable_broute ip6table_nat ip6table_mangle ip6table_= raw ip6table_security iptable_nat nf_nat nf_conntrack nf_defrag_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_common intel_rapl_comm= on mt76_connac_lib edac_mce_amd vfio_pci_core mt76 vfio_iommu_type1 vfio kvm_a= md iommufd iommu_v2 snd_usb_audio [ 4947.849379] snd_intel_dspcfg gpu_sched snd_intel_sdw_acpi mac80211 drm_suballoc_helper snd_usbmidi_lib i2c_algo_bit drm_ttm_helper snd_hda_cod= ec btusb ttm btrtl libarc4 btmtk snd_hda_core snd_rawmidi kvm snd_seq_device 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 ledtrig_a= udio 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_common video w= mi sunrpc [ 4947.849398] CPU: 2 PID: 16519 Comm: cat Tainted: P=20=20=20=20=20=20=20= =20=20=20=20=20=20=20=20=20=20=20 6.4.7-gentoo-dist-hardened #1 [ 4947.849399] Hardware name: ASUS System Product Name/TUF GAMING B650M-PLUS WIFI, BIOS 1616 05/16/2023 [ 4947.849400] RIP: 0010:dev_attr_show+0x24/0x60 [ 4947.849401] Code: 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 41 56 53 = 4c 8b 5e 10 4d 85 db 74 34 49 89 f6 41 ba 22 4e ae 79 45 03 53 f1 74 02 <0f> 0= b 41 ff d3 0f 1f 00 48 89 c3 48 3d 00 10 00 00 7c 19 49 8b 76 [ 4947.849403] RSP: 0018:ffffb33a03d9fd10 EFLAGS: 00010203 [ 4947.849404] RAX: ffff922f11509980 RBX: ffff9230e86f43c0 RCX: 0000000000000000 [ 4947.849404] RDX: ffff922f1746b000 RSI: ffffffffaee25f10 RDI: ffff922f0005f800 [ 4947.849405] RBP: ffff9230e86f43e8 R08: 0000000000001000 R09: ffff922f1746b000 [ 4947.849405] R10: 0000000015e419ad R11: ffffffffadda9330 R12: ffffffffae8aa188 [ 4947.849406] R13: ffff9233bbcb6fc0 R14: ffffffffaee25f10 R15: ffff922f1746b000 [ 4947.849407] FS: 00007eff007b4740(0000) GS:ffff923657e80000(0000) knlGS:0000000000000000 [ 4947.849407] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 4947.849408] CR2: 00007eff0099f000 CR3: 000000010a0a2000 CR4: 0000000000750ee0 [ 4947.849409] PKRU: 55555554 [ 4947.849409] Call Trace: [ 4947.849410] [ 4947.849411] ? __warn+0xcf/0x1c0 [ 4947.849414] ? dev_attr_show+0x24/0x60 [ 4947.849415] ? report_cfi_failure+0x4e/0x60 [ 4947.849417] ? handle_cfi_failure+0x14c/0x1d0 [ 4947.849419] ? __cfi_show_status+0x10/0x10 [ 4947.849420] ? handle_bug+0x4f/0x90 [ 4947.849421] ? exc_invalid_op+0x1a/0x60 [ 4947.849422] ? asm_exc_invalid_op+0x1a/0x20 [ 4947.849424] ? __cfi_show_status+0x10/0x10 [ 4947.849425] ? dev_attr_show+0x24/0x60 [ 4947.849426] sysfs_kf_seq_show+0xa6/0x110 [ 4947.849433] seq_read_iter+0x16c/0x4b0 [ 4947.849436] vfs_read+0x272/0x2d0 [ 4947.849438] ksys_read+0x72/0xe0 [ 4947.849439] do_syscall_64+0x76/0xb0 [ 4947.849440] ? do_user_addr_fault+0x252/0x650 [ 4947.849442] ? exc_page_fault+0x7a/0x1b0 [ 4947.849443] entry_SYSCALL_64_after_hwframe+0x72/0xdc [ 4947.849444] RIP: 0033:0x7eff008b2651 [ 4947.849445] Code: b5 fe ff ff 48 8d 3d 66 42 0a 00 50 e8 68 1b 02 00 0f = 1f 84 00 00 00 00 00 f3 0f 1e fa 80 3d ad 0d 0e 00 00 74 13 31 c0 0f 05 <48> 3= d 00 f0 ff ff 77 57 c3 66 0f 1f 44 00 00 53 48 83 ec 20 48 89 [ 4947.849446] RSP: 002b:00007ffecca23268 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 4947.849447] RAX: ffffffffffffffda RBX: 0000000000008000 RCX: 00007eff008b2651 [ 4947.849447] RDX: 0000000000020000 RSI: 00007eff009a0000 RDI: 0000000000000003 [ 4947.849448] RBP: 0000000000000003 R08: 00000000ffffffff R09: 0000000000000000 [ 4947.849448] R10: 0000000000000022 R11: 0000000000000246 R12: 0000000000020000 [ 4947.849449] R13: 0000000000000000 R14: 00007eff009a0000 R15: 0000000000020000 [ 4947.849450] [ 4947.849450] ---[ end trace 0000000000000000 ]--- --=20 You may reply to this email to add a comment. 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