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=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 0F96CC433E0 for ; Wed, 13 Jan 2021 09:18:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A25CC233E2 for ; Wed, 13 Jan 2021 09:18:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727741AbhAMJRv (ORCPT ); Wed, 13 Jan 2021 04:17:51 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54530 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727527AbhAMJRt (ORCPT ); Wed, 13 Jan 2021 04:17:49 -0500 Received: from mail-qv1-xf4a.google.com (mail-qv1-xf4a.google.com [IPv6:2607:f8b0:4864:20::f4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B3B12C06179F for ; Wed, 13 Jan 2021 01:17:08 -0800 (PST) Received: by mail-qv1-xf4a.google.com with SMTP id i20so961527qvk.18 for ; Wed, 13 Jan 2021 01:17:08 -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=XzfaCNHUB3u0Xi2wro/cbX3HxJgdcymLpFgEMQn1EeM=; b=D/ltpYSY2gXKcSOhoEH+7aMmW9DFoOQBGhBEMDJ4QS9njGGEQ+UgvD50OFm7WCJiX5 yGRfXzWPCiK/OxgUzjueN77kQfLhClaYsYkiLF4d4L8qq/oN4MTL7Bj4whF0lwwdFXGq vOeiKV0hfSHjks3r0uQ9MblnKoAcmMen4f7t4QSzOwJEJyc8damdK2f/AhX4tS06ga4N zJ3WzEbGl/Sgny/4jWxtwrIMobAkEb9bzIn99LBFf1J7S5EyhQJcLBsnf8NA6hJYHUY/ fgeOqaVP7Ahwr3dgE/izElEMBlXWOOSfC8lhgm4M7rpAT3oqaTqSgAcxngL/L3UrLx/3 h3ZA== 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=XzfaCNHUB3u0Xi2wro/cbX3HxJgdcymLpFgEMQn1EeM=; b=HEzf8jBQMAQZwvFctD7hXH4O8lk01BJTO8aYQPs5LLzSu9rfpc0TgUnTBLXOznftUU 1lSVcPN/GhkvXDUTU/qrKGVcJu/VOU/79qWypksri/4hfSSJEOLBtaMZcC+TLHCGU+yu cnlPBOaUdOHS36YMG52T13VwWLakulIltn1fWV0qpcquxV4jADfwS7Bq9MZ72+s7GU4Z 3lNlYdVZAArlvW25HZMhJ5mPk+ZhQlptTmEfNJr8tfFzX+MpTewbKu45MC2ui14czVCL HDO8Cd2VheAnQNaNDmZWE565a5hAPpaZ7OUlQAGoyxPz3T0mJ7Tt+GgBK16g7jSFrcey 1pMg== X-Gm-Message-State: AOAM532AGCCNkC7ZL/pM9OQyKkCkjWbyAvAYMJEqug6MEQezgey3m4c2 Gczhg2zbznZDk+qDyeS3IItZ7c/ZZqo= X-Google-Smtp-Source: ABdhPJxGEXOWLz12zW+XK9vcOJrU+ahfdiUUJDRxxYmBlkX4/voTJwUyqsSxNEb1r/QpLIRbF9BTV/M43LM= 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:a05:6214:a14:: with SMTP id dw20mr1243999qvb.43.1610529427925; Wed, 13 Jan 2021 01:17:07 -0800 (PST) Date: Wed, 13 Jan 2021 10:16:56 +0100 In-Reply-To: <20210113091657.1456216-1-glider@google.com> Message-Id: <20210113091657.1456216-4-glider@google.com> Mime-Version: 1.0 References: <20210113091657.1456216-1-glider@google.com> X-Mailer: git-send-email 2.30.0.284.gd98b1dd5eaa7-goog Subject: [PATCH 3/4] kfence: use error_report_start and error_report_end tracepoints From: Alexander Potapenko To: akpm@linux-foundation.org, linux-kernel@vger.kernel.org Cc: Alexander Potapenko , Marco Elver , Andrey Konovalov , Dmitry Vyukov , Ingo Molnar , Petr Mladek , Steven Rostedt , Sergey Senozhatsky , 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 --- mm/kfence/report.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/mm/kfence/report.c b/mm/kfence/report.c index 4dedc2ff8f28..5c063b5b2227 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("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("kfence", address); pr_err("==================================================================\n"); lockdep_on(); -- 2.30.0.284.gd98b1dd5eaa7-goog