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=-3.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 40467C43461 for ; Tue, 15 Sep 2020 10:36:14 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 6A9B320735 for ; Tue, 15 Sep 2020 10:36:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="deVBQ6TI" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6A9B320735 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id CBA69900031; Tue, 15 Sep 2020 06:36:12 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id C6BD7900017; Tue, 15 Sep 2020 06:36:12 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B5C2A900031; Tue, 15 Sep 2020 06:36:12 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0061.hostedemail.com [216.40.44.61]) by kanga.kvack.org (Postfix) with ESMTP id 9EBA8900017 for ; Tue, 15 Sep 2020 06:36:12 -0400 (EDT) Received: from smtpin29.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 660DB180AD807 for ; Tue, 15 Sep 2020 10:36:12 +0000 (UTC) X-FDA: 77264940984.29.beast67_040139927110 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin29.hostedemail.com (Postfix) with ESMTP id 36465180868DC for ; Tue, 15 Sep 2020 10:36:12 +0000 (UTC) X-HE-Tag: beast67_040139927110 X-Filterd-Recvd-Size: 3193 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf42.hostedemail.com (Postfix) with ESMTP for ; Tue, 15 Sep 2020 10:36:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=hvBH9n99n7oBLdgOlNEw3Z7fdQr8iLuKKj8rbR9iWPQ=; b=deVBQ6TIRiVTUZ0zB3/0okwYOA rbEP5YPP0/s6nWJA/LqMozIFOiPEcexK9dlQoaX2+oljyaco3rIsgqQXXb/7N998cNNcsb3UnYU7g AtrWzR1ZqrWwv4ykmjHinWHNRT9Os+gddd994F6BdKLIVX1dGqyNqUOZbrDUAWE4A0FLU157j0s4f RZQ4D1X24y6tx+8FYeA5kEDkT0sI/d8zJm1hy6bIoratb2BofjnAmo4RzXjxz0wMbHzlict2UfFZE i/W4CUBpWaGT3zJy1lqdjHAJcIf8HE23nbsQ9MowRvO6ApQGmLpKOUapFfL5kNkuO6oPWm/KIRBi8 In92fpJA==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kI8JL-0006QD-95; Tue, 15 Sep 2020 10:35:43 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 3A9E63050F0; Tue, 15 Sep 2020 12:35:39 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id B2263214EDD4A; Tue, 15 Sep 2020 12:35:39 +0200 (CEST) Date: Tue, 15 Sep 2020 12:35:39 +0200 From: peterz@infradead.org To: Qian Cai Cc: Naresh Kamboju , Linux-Next Mailing List , rcu@vger.kernel.org, linux-mm , open list , lkft-triage@lists.linaro.org, Linux PM , ": Paul E. McKenney" , Vincent Guittot , Stephen Rothwell , Will Deacon , Guenter Roeck , Viresh Kumar , Steven Rostedt , Juri Lelli Subject: Re: WARNING: suspicious RCU usage: race/events/tlb.h:57 suspicious rcu_dereference_check() usage! Message-ID: <20200915103539.GW1362448@hirez.programming.kicks-ass.net> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Queue-Id: 36465180868DC X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam05 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 Mon, Sep 14, 2020 at 01:29:34PM -0400, Qian Cai wrote: > On Wed, 2020-09-09 at 10:08 +0530, Naresh Kamboju wrote: > > While booting x86_64 with Linux next 20200908 tag kernel this warning > > was noticed. > > This pretty much looks like the same issue in: > > https://lore.kernel.org/lkml/20200902035146.GA45826@roeck-us.net/ > > Can you revert the patchset to see if it is related? Don't bother.. I'll be sending patches soon.