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=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 52E57C433DB for ; Fri, 15 Jan 2021 13:06:18 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id BBEDA221FA for ; Fri, 15 Jan 2021 13:06:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BBEDA221FA Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.cz Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 463E58D016E; Fri, 15 Jan 2021 08:06:17 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 43A7F8D0167; Fri, 15 Jan 2021 08:06:17 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 377F78D016E; Fri, 15 Jan 2021 08:06:17 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0254.hostedemail.com [216.40.44.254]) by kanga.kvack.org (Postfix) with ESMTP id 215A08D0167 for ; Fri, 15 Jan 2021 08:06:17 -0500 (EST) Received: from smtpin01.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id DC2931DE7 for ; Fri, 15 Jan 2021 13:06:16 +0000 (UTC) X-FDA: 77708032752.01.foot26_0a183ee2752f Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin01.hostedemail.com (Postfix) with ESMTP id B68E110050E23 for ; Fri, 15 Jan 2021 13:06:16 +0000 (UTC) X-HE-Tag: foot26_0a183ee2752f X-Filterd-Recvd-Size: 3078 Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by imf14.hostedemail.com (Postfix) with ESMTP for ; Fri, 15 Jan 2021 13:06:16 +0000 (UTC) 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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 >