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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no 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 F3E61C433DB for ; Fri, 22 Jan 2021 08:32:37 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 719E423381 for ; Fri, 22 Jan 2021 08:32:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 719E423381 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=suse.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 001AF6B000A; Fri, 22 Jan 2021 03:32:37 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id EF3D96B000C; Fri, 22 Jan 2021 03:32:36 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id DE2016B000D; Fri, 22 Jan 2021 03:32:36 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0127.hostedemail.com [216.40.44.127]) by kanga.kvack.org (Postfix) with ESMTP id C5C916B000A for ; Fri, 22 Jan 2021 03:32:36 -0500 (EST) Received: from smtpin01.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 7817D18065090 for ; Fri, 22 Jan 2021 08:32:36 +0000 (UTC) X-FDA: 77732744712.01.shirt12_1b074bb2756a Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin01.hostedemail.com (Postfix) with ESMTP id 41CC310058409 for ; Fri, 22 Jan 2021 08:32:36 +0000 (UTC) X-HE-Tag: shirt12_1b074bb2756a X-Filterd-Recvd-Size: 2410 Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by imf31.hostedemail.com (Postfix) with ESMTP for ; Fri, 22 Jan 2021 08:32:35 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1611304354; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=MYCHwHrCC9WJUfKullQqBNBK7/2N0huPDEnTqw+26SU=; b=jdc3dpRdRCKkGZ1rwdh5caZjZiHFZkXSGjCSqMLAhA8cWGIKmmT82nH5FLJSC/NMwVRJTj me/mgeOqybIqRi2EYZxfY1Q2I7JoKdKisjS0Yc39EcS1bNUrcgeJ9dD9EQU+D9ryQTRULf t6EezV8N2c5tKomCRZM3QSO7rybxWB0= Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 6DCBBACC6; Fri, 22 Jan 2021 08:32:34 +0000 (UTC) Date: Fri, 22 Jan 2021 09:32:33 +0100 From: Petr Mladek To: Alexander Potapenko Cc: akpm@linux-foundation.org, elver@google.com, andreyknvl@google.com, dvyukov@google.com, mingo@redhat.com, rostedt@goodmis.org, sergey.senozhatsky@gmail.com, linux-mm@kvack.org, linux-api@vger.kernel.org, vbabka@suse.cz, gregkh@linuxfoundation.org Subject: Re: [PATCH v3 0/3] Add error_report_end tracepoint to KFENCE and KASAN Message-ID: References: <20210121131915.1331302-1-glider@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210121131915.1331302-1-glider@google.com> 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: On Thu 2021-01-21 14:19:12, Alexander Potapenko wrote: > This patchset adds a tracepoint, error_repor_end, that is to be used by > KFENCE, KASAN, and potentially other bug detection tools, when they > print an error report. > One of the possible use cases is userspace collection of kernel error > reports: interested parties can subscribe to the tracing event via > tracefs, and get notified when an error report occurs. > > v3: > - dropped the sysfs interface for log collection > - dropped error_report_start tracepoint Just for record. This approach looks reasonable to me. Thanks for removing the sysfs interface. It would have been a potential can of worms. I do not feel eligible to add any tag. I am neither familiar with the tracepoint nor the KFENCE or KASAN code. Best Regards, Petr