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=-10.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS 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 39163C433E2 for ; Fri, 28 Aug 2020 12:37:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 06B8120848 for ; Fri, 28 Aug 2020 12:37:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598618268; bh=An3L22TmRcfX000BNuwZ5uCqAfiTYo6+waUJ67sacTs=; h=Date:From:To:Cc:Subject:In-Reply-To:References:List-ID:From; b=12sdkTS0wj3i/m3cH5oo+QfdA7pfWnhc2tBfNMYkl610g+szeArh2Fw7XWqV9lYBL FnvWYwK4klwSYyrzomwkX8z1ub+zTpyQFzIPQNF6WoByJjF6l7th0pgJ4HdEkkz/ZG uNg4wY3RHQ2I6hWYR7eAW6LXT5oRriDVrGN2rF4s= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729380AbgH1Mhq (ORCPT ); Fri, 28 Aug 2020 08:37:46 -0400 Received: from mail.kernel.org ([198.145.29.99]:44478 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729123AbgH1Mhe (ORCPT ); Fri, 28 Aug 2020 08:37:34 -0400 Received: from devnote2 (NE2965lan1.rev.em-net.ne.jp [210.141.244.193]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 05A5E2078A; Fri, 28 Aug 2020 12:37:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598618254; bh=An3L22TmRcfX000BNuwZ5uCqAfiTYo6+waUJ67sacTs=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=WPZnpNBiLi0wM5wZ7/sn+ySRZgD7aZu6kpCcqhwPq2n/Raj0eBVT4ZQ/YSzplSzez SJxMfc8nsyRgb0POzv8BmML2V4UYi6eIMcEBQLtssWVYu6crF1kUUOwhcOWk2gHUnP KVt0K2rwi/qwTiY4SfRKhnEViF2S9pv/meN3HJxI= Date: Fri, 28 Aug 2020 21:37:29 +0900 From: Masami Hiramatsu To: Masami Hiramatsu Cc: linux-kernel@vger.kernel.org, Peter Zijlstra , Eddy_Wu@trendmicro.com, x86@kernel.org, davem@davemloft.net, rostedt@goodmis.org, naveen.n.rao@linux.ibm.com, anil.s.keshavamurthy@intel.com, linux-arch@vger.kernel.org, cameron@moodycamel.com, oleg@redhat.com, will@kernel.org, paulmck@kernel.org Subject: Re: [PATCH v4 00/23] kprobes: Unify kretprobe trampoline handlers and make kretprobe lockless Message-Id: <20200828213729.68bb199c02812e24c2ffe942@kernel.org> In-Reply-To: <159861759775.992023.12553306821235086809.stgit@devnote2> References: <159861759775.992023.12553306821235086809.stgit@devnote2> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.32; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 28 Aug 2020 21:26:38 +0900 Masami Hiramatsu wrote: > Hi, > > Here is the 4th version of the series to unify the kretprobe trampoline handler > and make kretprobe lockless. > > Previous version is here; > > https://lkml.kernel.org/r/159854631442.736475.5062989489155389472.stgit@devnote2 > > In this version, I updated the generic trampoline handler a bit, merge > the Peter's lockless patches(*), and add an RFC "remove task scan" patch > as [20/23]. > > (*) https://lkml.kernel.org/r/20200827161237.889877377@infradead.org > > I ran some tests and ftracetest on x86-64. Mostly OK, but hit a BUG in the > trampoline handler once. I'm trying to reproduce it but not succeeded yet. > So this may need a careful review and tests. The series is also available on git://git.kernel.org/pub/scm/linux/kernel/git/mhiramat/linux.git lockless-kretprobe-v4 Thank you, -- Masami Hiramatsu