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=-26.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=ham 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 05AC8C433E6 for ; Fri, 15 Jan 2021 13:05:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D73EC221FA for ; Fri, 15 Jan 2021 13:05:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733239AbhAONFP (ORCPT ); Fri, 15 Jan 2021 08:05:15 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45898 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388204AbhAONFC (ORCPT ); Fri, 15 Jan 2021 08:05:02 -0500 Received: from mail-wm1-x349.google.com (mail-wm1-x349.google.com [IPv6:2a00:1450:4864:20::349]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D7DF7C061795 for ; Fri, 15 Jan 2021 05:03:50 -0800 (PST) Received: by mail-wm1-x349.google.com with SMTP id h25so277250wmb.6 for ; Fri, 15 Jan 2021 05:03:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:in-reply-to:message-id:mime-version:references:subject :from:to:cc; bh=954/Z+Hv6LNpyU9utqCctaUUru/bs3BWptIPfUnFtmI=; b=pm4+xcjwk+Pr+UXPk5mF0s3bJV0j+KWfPkIsrbpPDRrSGfSXWBhGeKkX90a+jelTbP KobHEq/XLzDeNe8BVOYEBsHJt+9fd4Fe6SXeDxDdH8twkCSYLrd6w5n9kb5cNWd2An61 tGxF3QVINmmir4xsF/oOxOBZHJt6pgFg/Y/5XUxgAvDAH27gJb8dnxRW1eXv22rxVshe yiK42IHcUltxQuoaL3rkds8EwUjK149viM/GwhS7MDBL2Yv5nMWcUrRmeKkK/x6mUTSs TWyfFxXakDmtc0W2MI8DMYz5U3IuCtGiId61uFrkRxKcC/N8C8JsJAfp5Gp28rVv312K TOTQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=954/Z+Hv6LNpyU9utqCctaUUru/bs3BWptIPfUnFtmI=; b=FyJLPUYmM2VRHxD1bDXv1sp9JVwC9IwwIvGjwys6QkKBVwmvCRv34W0guMY5chC7A7 m1qef3guz0PzJi0HvnCjHYuZiov7u/VjTsDYlkbYtw4OHGzTS4ZSyy1o4dhFE+o7cVHX G8A27KyX0ZLt5COWq9A/s+mSh8NcVf12gxdxst8CXoshLi+xZOqAefD3Cyyf6f+y6zlH 26BY9w5Xy8LOWwFOYrhP3l91lHKDecYDFFHBBlXgSErfjxy4w/e4kTM1p4D8GfEIg8uG pzeCXamRVkFMxDJu0Y/NcvaGfZ0r2smw8IMccKjaaWQcSfB8JujMGE8dv5OR1xzTz9uo zl/A== X-Gm-Message-State: AOAM533uKWkMreOGLRjzgcyxRSoYTZ3bC0mH8K4LKcFedVhmZx7dABjU cAiOqSXHtyGcfg3MqKGL3DHJnd/aoi3G8pNnkuO3fTiH/USDe9Lm2qUNv+2ENzahk6uXa91IowE nkwlmHrPOCsJZo1YgBXV/L+6MOVYXu5NOqo9BJyYwHHsxPY7/cngsu6EVzGGD4d/M90T+Ww== X-Google-Smtp-Source: ABdhPJxtwFBxiD7OEYrh/qyl7LW2IZQ1kWN66X1jJsjmKqpZeYgm33eaNA3UEIbQL3cBZ7Drz1VxX8M5jug= Sender: "glider via sendgmr" X-Received: from glider.muc.corp.google.com ([2a00:79e0:15:13:f693:9fff:fef4:9ff]) (user=glider job=sendgmr) by 2002:a1c:2c89:: with SMTP id s131mr934969wms.0.1610715829142; Fri, 15 Jan 2021 05:03:49 -0800 (PST) Date: Fri, 15 Jan 2021 14:03:35 +0100 In-Reply-To: <20210115130336.2520663-1-glider@google.com> Message-Id: <20210115130336.2520663-5-glider@google.com> Mime-Version: 1.0 References: <20210115130336.2520663-1-glider@google.com> X-Mailer: git-send-email 2.30.0.284.gd98b1dd5eaa7-goog Subject: [PATCH v2 4/5] kfence: use error_report_start and error_report_end tracepoints From: Alexander Potapenko To: linux-kernel@vger.kernel.org, akpm@linux-foundation.org Cc: andreyknvl@google.com, dvyukov@google.com, mingo@redhat.com, elver@google.com, pmladek@suse.com, rostedt@goodmis.org, sergey.senozhatsky@gmail.com, glider@google.com, linux-mm@kvack.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Make it possible to trace KFENCE error reporting (in particular, for compatibility with CONFIG_ERROR_REPORT_NOTIFY). Suggested-by: Marco Elver Cc: Andrew Morton Cc: Andrey Konovalov Cc: Dmitry Vyukov Cc: Ingo Molnar Cc: Marco Elver Cc: Petr Mladek Cc: Steven Rostedt Cc: Sergey Senozhatsky Cc: linux-mm@kvack.org Signed-off-by: Alexander Potapenko --- v2: - change error_report_start and error_report_end prototypes to accept enum error_detector instead of char* (as suggested by Steven Rostedt) --- mm/kfence/report.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/mm/kfence/report.c b/mm/kfence/report.c index 4dedc2ff8f28..bbe7dad5f249 100644 --- a/mm/kfence/report.c +++ b/mm/kfence/report.c @@ -9,6 +9,7 @@ #include #include #include +#include #include @@ -184,6 +185,7 @@ void kfence_report_error(unsigned long address, struct pt_regs *regs, lockdep_off(); pr_err("==================================================================\n"); + trace_error_report_start(ERROR_DETECTOR_KFENCE, address); /* Print report header. */ switch (type) { case KFENCE_ERROR_OOB: { @@ -232,6 +234,7 @@ void kfence_report_error(unsigned long address, struct pt_regs *regs, show_regs(regs); else dump_stack_print_info(KERN_ERR); + trace_error_report_end(ERROR_DETECTOR_KFENCE, address); pr_err("==================================================================\n"); lockdep_on(); -- 2.30.0.284.gd98b1dd5eaa7-goog