Received: by 2002:a25:8b91:0:0:0:0:0 with SMTP id j17csp3535034ybl; Fri, 20 Dec 2019 10:56:48 -0800 (PST) X-Google-Smtp-Source: APXvYqyMujQ+mknUloFNnHQ3My9La1VUKkUdLJCuWZk5J8bdIFsFccZuP2OhTQMZmZzvmFNyL7K2 X-Received: by 2002:a9d:7e8c:: with SMTP id m12mr17069443otp.346.1576868208302; Fri, 20 Dec 2019 10:56:48 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1576868208; cv=none; d=google.com; s=arc-20160816; b=V0U1oTC283KYvO5q2mLzv39c6a/0uZtd6eIfqkanKps/zNOPqHdb8DdpuhqgUg4W4J MYg32lxggvXFoQuroH4xM+c0VVg6EnzOuwmxkYB58TYwTWu79kdrixxMd/nH4P8Y/5aP 8nsed2Ydszc+nCVnnkZmrzr5Lo1kOijwG2J0TOtNyWk80oI+XJwkY7M1Zrbb2/DwTrn1 CBbSmn64Wi46xEpQXFmCNtf/l//xOVT4udpCr9Z2UDiPjGiWvoTG/eGPx5gUnX45N2uL OFtRZSVwLp98BvRSkZaKNaIvWJXkE2gigj6IV1We3utrsyvb91+SYF6K/c0AeGK85LnD yH1Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:subject:cc:to:from:date :dkim-signature; bh=Icaz69dC1nM86kjaFcBEOqIXU+N+ZqRV0xTpLXFljiU=; b=lEJBY87LqsqNp6GFNtRkBcCMfi20CejJ68jYVZsEtzfGf3F5G6L60jFm423aw4mEIJ L2wfXu6lLlGCv6DWvJyUSqCGaeIKaCEbGcet1zlGutBQZNnZjAvjn/tdG5sc1S7hhlxV XcNnCBEkaJjW7aN+d7+Y4qvWZe+fE8a+hTfkkguQUY7IiA0pjKC7Lpa8Ww1b677h9829 hbkPKR6oXqTJz9QXtDr3HsLH9ODFGpCTNKG1HOSkyDpYSf2IfcV8kNpivJc8J4E9h8gl Jt80ZFwnahy+ULARoZpIuH5tOke4wFsgGb4wNmvRg/0u5zUDWYqOgfbP00R/1/VY5vFa IeWA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=U+hwi9xh; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id w7si5566833otq.250.2019.12.20.10.56.36; Fri, 20 Dec 2019 10:56:48 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=U+hwi9xh; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727510AbfLTSzr (ORCPT + 99 others); Fri, 20 Dec 2019 13:55:47 -0500 Received: from mail.kernel.org ([198.145.29.99]:49234 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727404AbfLTSzr (ORCPT ); Fri, 20 Dec 2019 13:55:47 -0500 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 30FCB206D8; Fri, 20 Dec 2019 18:55:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576868146; bh=IHewiafZP6O9c1Wi2X5HdbeCK4jiwo8/eMpUfBGFAj8=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=U+hwi9xhbzx5Cthi3fBq4U/+DZfatJ3jgwzF339RzFOZ65b3fWHMYhjqCFAB67xuM 7zM8MMO7HAthc9iOA2KF6PfhOFXtg1jiRtFAa3iBuvjovZb3EkTvxvSiopP/Ep/WgQ DzFVRo3YerxAzmEVVhnu+O/2WdxoXYppPX9RBdcY= Date: Sat, 21 Dec 2019 03:55:41 +0900 From: Masami Hiramatsu To: Masami Hiramatsu Cc: Ingo Molnar , Anders Roxell , paulmck@kernel.org, joel@joelfernandes.org, "Naveen N . Rao" , Anil S Keshavamurthy , David Miller , Linux Kernel Mailing List Subject: Re: [PATCH -tip V2 0/2] kprobes: Fix RCU warning and cleanup Message-Id: <20191221035541.69fc05613351b8dabd6e1a44@kernel.org> In-Reply-To: <157535316659.16485.11817291759382261088.stgit@devnote2> References: <157535316659.16485.11817291759382261088.stgit@devnote2> X-Mailer: Sylpheed 3.5.1 (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 Hi Ingo, Could you pick this series to fix the false-positive RCU-list warnings? Thank you, On Tue, 3 Dec 2019 15:06:06 +0900 Masami Hiramatsu wrote: > Hi, > > Here is a couple of patches which fix suspicious RCU > usage warnings in kprobes. > > Anders reported the first warning in kprobe smoke test > with CONFIG_PROVE_RCU_LIST=y. While fixing this issue, > I found similar issues and cleanups in kprobes. > > Thank you, > > --- > > Masami Hiramatsu (2): > kprobes: Suppress the suspicious RCU warning on kprobes > kprobes: Use non RCU traversal APIs on kprobe_tables if possible > > > kernel/kprobes.c | 32 ++++++++++++++++++++++---------- > 1 file changed, 22 insertions(+), 10 deletions(-) > > -- > Masami Hiramatsu (Linaro) -- Masami Hiramatsu