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=-10.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 0370FC43332 for ; Fri, 15 Jan 2021 13:07:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BB256221FA for ; Fri, 15 Jan 2021 13:07:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388606AbhAONHB (ORCPT ); Fri, 15 Jan 2021 08:07:01 -0500 Received: from mx2.suse.de ([195.135.220.15]:53642 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388602AbhAONG5 (ORCPT ); Fri, 15 Jan 2021 08:06:57 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 1692EAC8F; Fri, 15 Jan 2021 13:06:15 +0000 (UTC) Subject: Re: [PATCH v2 0/5] Add sysfs interface to collect reports from debugging tools To: Alexander Potapenko , linux-kernel@vger.kernel.org, akpm@linux-foundation.org, Linux API Cc: andreyknvl@google.com, dvyukov@google.com, mingo@redhat.com, elver@google.com, pmladek@suse.com, rostedt@goodmis.org, sergey.senozhatsky@gmail.com, linux-mm@kvack.org References: <20210115130336.2520663-1-glider@google.com> From: Vlastimil Babka Message-ID: <5ae22590-752e-7ea2-5341-a49a99e7507d@suse.cz> Date: Fri, 15 Jan 2021 14:06:14 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.6.0 MIME-Version: 1.0 In-Reply-To: <20210115130336.2520663-1-glider@google.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Should have CCd linux-api@, please do next time On 1/15/21 2:03 PM, Alexander Potapenko wrote: > This patchset adds a library that captures error reports from debugging > tools like KASAN or KFENCE and exposes those reports to userspace via > sysfs. Report capturing is controlled by two new types of tracepoints: > error_report_start and error_report_end, that must be added to the tools > that want to use this new feature. > > v2: > - added ABI documentation for /sys/kernel/error_report/ > - changed error_report_start and error_report end tracepoints to take > a fixed set of values for the error detector > > Alexander Potapenko (5): > tracing: add error_report trace points > lib: add error_report_notify to collect debugging tools' reports > docs: ABI: add /sys/kernel/error_report/ documentation > kfence: use error_report_start and error_report_end tracepoints > kasan: use error_report_start and error_report_end tracepoints > > .../ABI/testing/sysfs-kernel-error_report | 41 +++ > include/trace/events/error_report.h | 84 ++++++ > kernel/trace/Makefile | 1 + > kernel/trace/error_report-traces.c | 11 + > lib/Kconfig.debug | 14 + > lib/Makefile | 2 + > lib/error_report_notify.c | 278 ++++++++++++++++++ > mm/kasan/report.c | 15 +- > mm/kfence/report.c | 3 + > 9 files changed, 443 insertions(+), 6 deletions(-) > create mode 100644 Documentation/ABI/testing/sysfs-kernel-error_report > create mode 100644 include/trace/events/error_report.h > create mode 100644 kernel/trace/error_report-traces.c > create mode 100644 lib/error_report_notify.c >