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=-12.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 7A6EEC00A89 for ; Fri, 30 Oct 2020 16:34:57 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 03C4220727 for ; Fri, 30 Oct 2020 16:34:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="cgcNKhc/"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="WPNolX+9" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 03C4220727 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=fopg3MAHsm5h8Bwa27gFIuydSzY0AnToDma6GwUSsHg=; b=cgcNKhc/uIl6Q2ZuJ0xTE10co nJXkLyzlCXeO5s9z//jPyoaJn37E2icGzAqNxsYp24Zh4vsybNbSHJncrDnF53LsuWHzQ2RJrRStY aFwSL5eIOTD7xiAb3bHYpE15x3UfAeqW2BNR/GmINsmlTnBRNcKcTlmhvjcA3+HQto6f+Xgeh7Tdq /Ora4arY9BbbIx1MXu+QDYd3RR0JBJhS67CMy4h7EaXZppIU7SLQ54CBxbkJWrMSiRnYovyLQY92W K6c8vkgWEYkyrt4CsScZgt+qfMZum0sedonEwwLuLsnoKgzfRKpj9O9XLni3AsNbYY0Z0WPfjmhV2 IriMPxXpA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kYXLK-0002xW-OU; Fri, 30 Oct 2020 16:33:34 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kYXLH-0002wN-Uz for linux-arm-kernel@lists.infradead.org; Fri, 30 Oct 2020 16:33:32 +0000 Received: from localhost.localdomain (236.31.169.217.in-addr.arpa [217.169.31.236]) (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 93B0520727; Fri, 30 Oct 2020 16:33:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1604075611; bh=GHasvaoA/YIBwMT0l4avY/GTrYzzdWpoqx0j6MMRCrY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WPNolX+9lnWZpaGeB9ku9gPkM/SvePUgM5vHPWrYdA7ULevn3HKYOhVRL8Laj3jIU s81pI0htDr+lmu89keR5vG7ezVBPtqWm8oPxssgtTVyM5yDghxB+qo5DYXeEY6eHLY vCeUI2n0mhhreD8JG3Co13bguFGtrQCe1IyrZN/I= From: Will Deacon To: "Paul E. McKenney" , Qian Cai Subject: Re: [PATCH] arm64/smp: Move rcu_cpu_starting() earlier Date: Fri, 30 Oct 2020 16:33:25 +0000 Message-Id: <160404559895.1777248.8248643695413627642.b4-ty@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20201028182614.13655-1-cai@redhat.com> References: <20201028182614.13655-1-cai@redhat.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201030_123332_104654_AC669C64 X-CRM114-Status: GOOD ( 11.91 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Will Deacon , Peter Zijlstra , catalin.marinas@arm.com, linux-kernel@vger.kernel.org, kernel-team@android.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, 28 Oct 2020 14:26:14 -0400, Qian Cai wrote: > The call to rcu_cpu_starting() in secondary_start_kernel() is not early > enough in the CPU-hotplug onlining process, which results in lockdep > splats as follows: > > WARNING: suspicious RCU usage > ----------------------------- > kernel/locking/lockdep.c:3497 RCU-list traversed in non-reader section!! > > [...] Applied to arm64 (for-next/fixes), thanks! [1/1] arm64/smp: Move rcu_cpu_starting() earlier https://git.kernel.org/arm64/c/ce3d31ad3cac Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel