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 X-Spam-Level: X-Spam-Status: No, score=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7B70FC64E8A for ; Wed, 25 Nov 2020 15:40:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 27CEE21D81 for ; Wed, 25 Nov 2020 15:40:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="stnMF9XC" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731573AbgKYPkU (ORCPT ); Wed, 25 Nov 2020 10:40:20 -0500 Received: from mail.kernel.org ([198.145.29.99]:55482 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731096AbgKYPhd (ORCPT ); Wed, 25 Nov 2020 10:37:33 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1C853221FD; Wed, 25 Nov 2020 15:37:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1606318652; bh=XWlz7NDFE0AhGHFRfAaYAMdyCvwPzk8IeegpybgiS/k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=stnMF9XCxQRNJl2Vm5EgEWxSgzeytTzYPxsnn7nst3InCO1lAZpO49LMVo/38+VJX ErdO8sW2E9jEmftOgwXGA+1IOZUrAd/oEGSDwygrgEYnjP1sljFq44QLruU1bsI1ks Bte8SSczYmte3V9jK9YV1k5xU6UIl9c/Jmuu/1oc= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Sami Tolvanen , Sedat Dilek , Peter Zijlstra , Kees Cook , Sasha Levin , clang-built-linux@googlegroups.com Subject: [PATCH AUTOSEL 4.19 14/15] perf/x86: fix sysfs type mismatches Date: Wed, 25 Nov 2020 10:37:11 -0500 Message-Id: <20201125153712.810655-14-sashal@kernel.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20201125153712.810655-1-sashal@kernel.org> References: <20201125153712.810655-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Sami Tolvanen [ Upstream commit ebd19fc372e3e78bf165f230e7c084e304441c08 ] This change switches rapl to use PMU_FORMAT_ATTR, and fixes two other macros to use device_attribute instead of kobj_attribute to avoid callback type mismatches that trip indirect call checking with Clang's Control-Flow Integrity (CFI). Reported-by: Sedat Dilek Signed-off-by: Sami Tolvanen Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Kees Cook Link: https://lkml.kernel.org/r/20201113183126.1239404-1-samitolvanen@google.com Signed-off-by: Sasha Levin --- arch/x86/events/intel/cstate.c | 6 +++--- arch/x86/events/intel/rapl.c | 14 +------------- arch/x86/events/intel/uncore.c | 4 ++-- arch/x86/events/intel/uncore.h | 12 ++++++------ 4 files changed, 12 insertions(+), 24 deletions(-) diff --git a/arch/x86/events/intel/cstate.c b/arch/x86/events/intel/cstate.c index 4a650eb3d94a3..3b3cd12c06920 100644 --- a/arch/x86/events/intel/cstate.c +++ b/arch/x86/events/intel/cstate.c @@ -100,14 +100,14 @@ MODULE_LICENSE("GPL"); #define DEFINE_CSTATE_FORMAT_ATTR(_var, _name, _format) \ -static ssize_t __cstate_##_var##_show(struct kobject *kobj, \ - struct kobj_attribute *attr, \ +static ssize_t __cstate_##_var##_show(struct device *dev, \ + struct device_attribute *attr, \ char *page) \ { \ BUILD_BUG_ON(sizeof(_format) >= PAGE_SIZE); \ return sprintf(page, _format "\n"); \ } \ -static struct kobj_attribute format_attr_##_var = \ +static struct device_attribute format_attr_##_var = \ __ATTR(_name, 0444, __cstate_##_var##_show, NULL) static ssize_t cstate_get_attr_cpumask(struct device *dev, diff --git a/arch/x86/events/intel/rapl.c b/arch/x86/events/intel/rapl.c index 2413169ce3627..bc348663da94d 100644 --- a/arch/x86/events/intel/rapl.c +++ b/arch/x86/events/intel/rapl.c @@ -115,18 +115,6 @@ static const char *const rapl_domain_names[NR_RAPL_DOMAINS] __initconst = { * any other bit is reserved */ #define RAPL_EVENT_MASK 0xFFULL - -#define DEFINE_RAPL_FORMAT_ATTR(_var, _name, _format) \ -static ssize_t __rapl_##_var##_show(struct kobject *kobj, \ - struct kobj_attribute *attr, \ - char *page) \ -{ \ - BUILD_BUG_ON(sizeof(_format) >= PAGE_SIZE); \ - return sprintf(page, _format "\n"); \ -} \ -static struct kobj_attribute format_attr_##_var = \ - __ATTR(_name, 0444, __rapl_##_var##_show, NULL) - #define RAPL_CNTR_WIDTH 32 #define RAPL_EVENT_ATTR_STR(_name, v, str) \ @@ -548,7 +536,7 @@ static struct attribute_group rapl_pmu_events_group = { .attrs = NULL, /* patched at runtime */ }; -DEFINE_RAPL_FORMAT_ATTR(event, event, "config:0-7"); +PMU_FORMAT_ATTR(event, "config:0-7"); static struct attribute *rapl_formats_attr[] = { &format_attr_event.attr, NULL, diff --git a/arch/x86/events/intel/uncore.c b/arch/x86/events/intel/uncore.c index 7098b9b05d566..2f4ed5aa08bad 100644 --- a/arch/x86/events/intel/uncore.c +++ b/arch/x86/events/intel/uncore.c @@ -90,8 +90,8 @@ struct pci2phy_map *__find_pci2phy_map(int segment) return map; } -ssize_t uncore_event_show(struct kobject *kobj, - struct kobj_attribute *attr, char *buf) +ssize_t uncore_event_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct uncore_event_desc *event = container_of(attr, struct uncore_event_desc, attr); diff --git a/arch/x86/events/intel/uncore.h b/arch/x86/events/intel/uncore.h index 40e040ec31b50..0fc86ac73b511 100644 --- a/arch/x86/events/intel/uncore.h +++ b/arch/x86/events/intel/uncore.h @@ -133,7 +133,7 @@ struct intel_uncore_box { #define UNCORE_BOX_FLAG_CTL_OFFS8 1 /* event config registers are 8-byte apart */ struct uncore_event_desc { - struct kobj_attribute attr; + struct device_attribute attr; const char *config; }; @@ -153,8 +153,8 @@ struct pci2phy_map { struct pci2phy_map *__find_pci2phy_map(int segment); -ssize_t uncore_event_show(struct kobject *kobj, - struct kobj_attribute *attr, char *buf); +ssize_t uncore_event_show(struct device *dev, + struct device_attribute *attr, char *buf); #define INTEL_UNCORE_EVENT_DESC(_name, _config) \ { \ @@ -163,14 +163,14 @@ ssize_t uncore_event_show(struct kobject *kobj, } #define DEFINE_UNCORE_FORMAT_ATTR(_var, _name, _format) \ -static ssize_t __uncore_##_var##_show(struct kobject *kobj, \ - struct kobj_attribute *attr, \ +static ssize_t __uncore_##_var##_show(struct device *dev, \ + struct device_attribute *attr, \ char *page) \ { \ BUILD_BUG_ON(sizeof(_format) >= PAGE_SIZE); \ return sprintf(page, _format "\n"); \ } \ -static struct kobj_attribute format_attr_##_var = \ +static struct device_attribute format_attr_##_var = \ __ATTR(_name, 0444, __uncore_##_var##_show, NULL) static inline bool uncore_pmc_fixed(int idx) -- 2.27.0