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=-2.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 70B55C43215 for ; Fri, 22 Nov 2019 15:16:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 497122071C for ; Fri, 22 Nov 2019 15:16:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574435797; bh=ZxQM3k879r7/0GkBs4EcysLfK42eCa9E+tvIZX1nAqw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=baivVZgLbz2DdS0qxKca0QIxRtVBVUQyBL6F1Mw118d87LOOxo5xBfoG8paXKxrEK qImYcOrDRkh0AQq6PFA7zbiqmZpOrakBXmR3V1Ed/Jn507sks6vlNWs4Fw3AGdeThq D/9rXJtMqfbw0ri+a8cLA01mZVVLRfiYxHMzGOsA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727007AbfKVPQg (ORCPT ); Fri, 22 Nov 2019 10:16:36 -0500 Received: from mail.kernel.org ([198.145.29.99]:38340 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726634AbfKVPQg (ORCPT ); Fri, 22 Nov 2019 10:16:36 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (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 890BD2071B; Fri, 22 Nov 2019 15:16:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574435794; bh=ZxQM3k879r7/0GkBs4EcysLfK42eCa9E+tvIZX1nAqw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=1pN1bLDycLvfU0mrNnHJcEJMrU/uYukBOti9fu3snFNR5ACLgx3Wu7zZieU0CTPYQ o3M/aTr9mz3aTqvWuEEucq51s+5yQl79t+MR7wHEWEJ3uvcvOd0rJuCh+39w4lebEq gG9XBXXm0eJjJEjT0RZudmuh/xu5tO3QjNSQDkxQ= Date: Fri, 22 Nov 2019 16:16:31 +0100 From: Greg Kroah-Hartman To: "Matthew Wilcox (Oracle)" , Guenter Roeck Cc: linux-kernel@vger.kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, shuah@kernel.org, patches@kernelci.org, ben.hutchings@codethink.co.uk, lkft-triage@lists.linaro.org, stable@vger.kernel.org Subject: Re: [PATCH 4.19 000/220] 4.19.86-stable review Message-ID: <20191122151631.GA2083451@kroah.com> References: <20191122100912.732983531@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.12.2 (2019-09-21) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Nov 22, 2019 at 06:47:05AM -0800, Guenter Roeck wrote: > On 11/22/19 2:26 AM, Greg Kroah-Hartman wrote: > > This is the start of the stable review cycle for the 4.19.86 release. > > There are 220 patches in this series, all will be posted as a response > > to this one. If anyone has any issues with these being applied, please > > let me know. > > > > Responses should be made by Sun, 24 Nov 2019 09:59:19 +0000. > > Anything received after that time might be too late. > > > > I see the following warning (at least for arm64, ppc64, and x86_64). > This seems to be caused by "idr: Fix idr_get_next race with idr_remove". > v4.14.y is also affected. Mainline and v5.3.y are not affected. > > Guenter > > --- > [ 3.897800] NetLabel: Initializing > [ 3.897944] NetLabel: domain hash size = 128 > [ 3.898044] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO > [ 3.898995] > [ 3.899135] ============================= > [ 3.899235] WARNING: suspicious RCU usage > [ 3.899479] 4.19.86-rc1+ #1 Not tainted > [ 3.899595] ----------------------------- > [ 3.899772] include/linux/radix-tree.h:241 suspicious rcu_dereference_check() usage! > [ 3.899939] > [ 3.899939] other info that might help us debug this: > [ 3.899939] > [ 3.900159] > [ 3.900159] rcu_scheduler_active = 2, debug_locks = 1 > [ 3.900347] 2 locks held by swapper/0/1: > [ 3.900479] #0: (____ptrval____) (cb_lock){+.+.}, at: genl_register_family+0xab/0x717 > [ 3.901498] #1: (____ptrval____) (genl_mutex){+.+.}, at: genl_register_family+0xb9/0x717 > [ 3.901860] > [ 3.901860] stack backtrace: > [ 3.902136] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.19.86-rc1+ #1 > [ 3.902295] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014 > [ 3.902633] Call Trace: > [ 3.902633] dump_stack+0x71/0xa0 > [ 3.902633] idr_get_next+0x133/0x160 > [ 3.902633] ? genl_register_family+0xab/0x717 > [ 3.902633] ? do_early_param+0x89/0x89 > [ 3.902633] genl_family_find_byname+0x4e/0x80 > [ 3.902633] genl_register_family+0xc1/0x717 > [ 3.902633] ? do_early_param+0x89/0x89 > [ 3.902633] ? netlbl_netlink_init+0x21/0x21 > [ 3.902633] netlbl_netlink_init+0x5/0x21 > [ 3.902633] netlbl_init+0x4a/0x74 > [ 3.902633] do_one_initcall+0x58/0x2ae > [ 3.902633] ? do_early_param+0x89/0x89 > [ 3.902633] ? rcu_read_lock_sched_held+0x6f/0x80 > [ 3.902633] ? do_early_param+0x89/0x89 > [ 3.902633] kernel_init_freeable+0x1bc/0x24b > [ 3.902633] ? rest_init+0x176/0x176 > [ 3.902633] kernel_init+0x5/0x101 > [ 3.902633] ret_from_fork+0x3a/0x50 > Willy, this looks like something from your patch, is it to be expected? thanks, greg k-h