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 D5D49C4338F for ; Mon, 16 Aug 2021 09:12:14 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 4FD9D61B5F for ; Mon, 16 Aug 2021 09:12:14 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 4FD9D61B5F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id B3CC86B0071; Mon, 16 Aug 2021 05:12:13 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id AEC938D0001; Mon, 16 Aug 2021 05:12:13 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9DAF66B0073; Mon, 16 Aug 2021 05:12:13 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0132.hostedemail.com [216.40.44.132]) by kanga.kvack.org (Postfix) with ESMTP id 824EB6B0071 for ; Mon, 16 Aug 2021 05:12:13 -0400 (EDT) Received: from smtpin27.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 1CEDB20306 for ; Mon, 16 Aug 2021 09:12:13 +0000 (UTC) X-FDA: 78480377346.27.7EF0B7D Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf25.hostedemail.com (Postfix) with ESMTP id AB002B0002AA for ; Mon, 16 Aug 2021 09:12:12 +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=QKf46TvyqHoljFOG5R2omK+90ghEclzc56b+ARTz2+Q=; b=YPPTrTZmNRawhVunb84g7QmaIf pI0I7O5NqxyEajN48j4ETkqt/JP8x5Pa4U7dbCDp8X+cH4xYW60At9WHuvLa0Mo6t9/Z+W5y85b9x 9KB3pqgeCHmRiv/mKTNPLT4G5ipUO81LKdn7WtEGiVr9BbN2iaBbNd+ZFHSs8CmdDm/fIzM2Aug9I zjXSdUheU6O9WhlyDC6Gt8OhlQMCqeIUYiVrUZg4hoWa/iRTyPnaRMnIrhsYRFlduXsOWilHM4R85 JyMyFxL69IJex+akJgnhTr1UP5QswfAOGenkgp6kwbcPoVlzMi2agSILAO4TNa/EtRtYF3cM9/2sg n1kwOhLQ==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1mFYe6-001BRB-9q; Mon, 16 Aug 2021 09:11:22 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id BECA730009A; Mon, 16 Aug 2021 11:10:59 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 98F57201620F0; Mon, 16 Aug 2021 11:10:59 +0200 (CEST) Date: Mon, 16 Aug 2021 11:10:59 +0200 From: Peter Zijlstra To: Tetsuo Handa Cc: Thomas Gleixner , Zqiang , Kees Cook , Stephen Boyd , Tejun Heo , Lai Jiangshan , Ingo Molnar , Will Deacon , Waiman Long , Boqun Feng , linux-mm Subject: Re: [5.14] problem with dynamic memory allocation for object debugging Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Queue-Id: AB002B0002AA Authentication-Results: imf25.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=YPPTrTZm; dmarc=none; spf=none (imf25.hostedemail.com: domain of peterz@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=peterz@infradead.org X-Rspamd-Server: rspam04 X-Stat-Signature: 3epdnkp6cmpw5awg48dpurk1t76rsuzk X-HE-Tag: 1629105132-516195 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 Sun, Aug 15, 2021 at 07:23:03PM +0900, Tetsuo Handa wrote: > Hello. > > I'm frequently hitting "BUG: Invalid wait context", and > it seems that this problem is not fixed yet. Unless you're doing PREEMPT_RT development, don't use this lockdep option. Once we get mainline clean, I'll default enable it and make it go away, until then, don't use it unless you're interested.