Received: by 2002:a25:8b91:0:0:0:0:0 with SMTP id j17csp953381ybl; Mon, 2 Dec 2019 22:07:03 -0800 (PST) X-Google-Smtp-Source: APXvYqxToH80lLc2bv8jpGgB/7Yz+kzVoLyibkL1fR6xJr+6kVIXlQx9D1mGgAqLufMN0tcx+hMh X-Received: by 2002:a54:468b:: with SMTP id k11mr2272795oic.134.1575353223110; Mon, 02 Dec 2019 22:07:03 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1575353223; cv=none; d=google.com; s=arc-20160816; b=ENoFYxwOwrWawqsDCMRHAUTM2rTErKjJ8GQ5TA8tsCSlkEG0titk9G5scgbVaZ1jfn mqKs++TohiIgXbeunuO5WYzlS/reeACWe6/EdjxpO2sIG+hH/TWHjNpGECTizjQrUeiv avzqWKxbbyZWQC3kDPGZsYzeWcjr6/M7+/wJx2YKhaUARagRD+E7WVeIZSwvyjKkpTM1 1zaVuajxMSPGoNrQSEI8SALHKczk3ifNBPRemrEmi9JZcsfaxX1VvbrRtPhqBteZmYU+ CagQ5YIy4sQ2rdsGTyfQSIbKl7sg0EM49llfLtLAZSxeeTYD+5wkM7c5R4B1vwyQjV38 TPhg== 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 :user-agent:message-id:date:subject:cc:to:from:dkim-signature; bh=S99SClUwlKVFH1ZORx+JLQg3PW8wYQsjIo9tgvUzEIM=; b=j1PKU+iPQkn81J9EFOjcI1XwQFrdIYnKlSIcI5NtfZ6+XR4fiof3fp1CluA0QCH3Pc 8H8auwWlzmbXb8Mp6RqK3dkwW9hu8qH0WNJgWgmH23sAlfKqXo3BUR1g0ualpXmpndEP FjyeqF5Q7wP0PV+p+2mKgruflRTIckScFwWGve8DtWBblo7TVeYAors7Ig9f+jBBV60q iwtB+xPJrzcBM8h0op97sURfQKrNGm9JvnHsdquTyr3TzrG/mqsSG0M7Naczq8GEHWaS 1LnvRa2mYJWXgy4vJR53aDczjlcR6FFD3TrtNU7KWge/rzZZh7DsaDwkvyLI6XYrguoZ ilZA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=i3bXmiWX; 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 11si161185otz.101.2019.12.02.22.06.51; Mon, 02 Dec 2019 22:07:03 -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=i3bXmiWX; 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 S1727044AbfLCGGN (ORCPT + 99 others); Tue, 3 Dec 2019 01:06:13 -0500 Received: from mail.kernel.org ([198.145.29.99]:43920 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726521AbfLCGGM (ORCPT ); Tue, 3 Dec 2019 01:06:12 -0500 Received: from localhost.localdomain (unknown [180.22.253.92]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 068A120684; Tue, 3 Dec 2019 06:06:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1575353172; bh=W/lb+NDZ3JWiJq6DDrWZRc4hcbXek1SBpW1hjxThmA4=; h=From:To:Cc:Subject:Date:From; b=i3bXmiWXAL1sAe23w9MGnFtZNhj785YTxyIcIEcw7mrex6lmOvvEX4o2TcGKgen5s HP2oIi871FWQxK4bEuQLhQXDdHhkDrLy4EDkwJe0+RZVmJDIF1KLGL5gl71MSEVub4 HTntmb+JqgwOdqC0hjGx69fiElhlb9UMbZWSkl4w= From: Masami Hiramatsu To: Ingo Molnar Cc: Anders Roxell , paulmck@kernel.org, joel@joelfernandes.org, "Naveen N . Rao" , Anil S Keshavamurthy , David Miller , Masami Hiramatsu , Linux Kernel Mailing List Subject: [PATCH -tip V2 0/2] kprobes: Fix RCU warning and cleanup Date: Tue, 3 Dec 2019 15:06:06 +0900 Message-Id: <157535316659.16485.11817291759382261088.stgit@devnote2> X-Mailer: git-send-email 2.20.1 User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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)