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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 443DCC433EF for ; Fri, 11 Feb 2022 17:05:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1351887AbiBKRFA (ORCPT ); Fri, 11 Feb 2022 12:05:00 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:59342 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230441AbiBKRE7 (ORCPT ); Fri, 11 Feb 2022 12:04:59 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 31FEB102; Fri, 11 Feb 2022 09:04:58 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id E6643B82ADF; Fri, 11 Feb 2022 17:04:56 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B125DC340E9; Fri, 11 Feb 2022 17:04:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1644599095; bh=Sp7dZxkZVKWWeAoO1rNGVqZMJj/tCvRKVNvSSCvn8Pw=; h=Date:From:To:Cc:Subject:Reply-To:From; b=OTn5Wmz3ZV0keueb60DJ13Q3rk13NLl1uLqdX7z0tKq5Xrau07fdrCh2Fq5RF7eWL d13iPo8bbR03ZBuM6N/EjCtaN17DBQ+zKNswtoqWZS9E5neNE3XGjM87I4Q6N4rzEc Rvcj4+z/a4SukkXiwdUEzJMuQhui05Z4T3lAuKNJp90X1PJapdkkfQZhmIge+4F9lU MdhCYEEnMVuvxEz9KcvO6HzKzp2qy/K1QbgQ+0KIKGQKsW5mwaF8JEhibuM/DSREeS mocisgLmjVettQrg9YU/GeQBTphtELd+ujJCWFQudM8+YyPgHs19k3IrJbwSy0T38s urNOcjPdpo6RQ== Received: by paulmck-ThinkPad-P17-Gen-1.home (Postfix, from userid 1000) id 70FE55C0610; Fri, 11 Feb 2022 09:04:55 -0800 (PST) Date: Fri, 11 Feb 2022 09:04:55 -0800 From: "Paul E. McKenney" To: mcgrof@kernel.org, keescook@chromium.org, yzaikin@google.com Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [BUG] Splat in __register_sysctl_table() in next-20220210 Message-ID: <20220211170455.GA1328576@paulmck-ThinkPad-P17-Gen-1> Reply-To: paulmck@kernel.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! I just wanted to be the 20th person to report the below splat in init_fs_stat_sysctls() during boot. ;-) It happens on all rcutorture scenarios, for whatever that might be worth. Thanx, Paul ------------------------------------------------------------------------ [ 1.219815] calling init_fs_stat_sysctls+0x0/0x37 @ 1 [ 1.220440] CPU: 0 PID: 1 Comm: swapper Not tainted 5.17.0-rc3-next-20220210 #852 [ 1.221353] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-1ubuntu1.1 04/01/2014 [ 1.224133] Call Trace: [ 1.224439] [ 1.224702] dump_stack_lvl+0x22/0x29 [ 1.225122] dump_stack+0x15/0x2a [ 1.225611] __register_sysctl_table+0x4b2/0xab0 [ 1.226158] ? init_fs_open_sysctls+0x2b/0x2b [ 1.226755] register_sysctl_mount_point+0x24/0x40 [ 1.227396] init_fs_stat_sysctls+0x2f/0x37 [ 1.227884] do_one_initcall+0x128/0x3e0 [ 1.228445] do_initcall_level+0xca/0x168 [ 1.229215] do_initcalls+0x66/0x95 [ 1.229620] do_basic_setup+0x18/0x1e [ 1.230105] kernel_init_freeable+0xa9/0x113 [ 1.230617] ? rest_init+0x150/0x150 [ 1.231101] kernel_init+0x1c/0x200 [ 1.231550] ? rest_init+0x150/0x150 [ 1.231981] ret_from_fork+0x22/0x30 [ 1.232471] [ 1.232743] initcall init_fs_stat_sysctls+0x0/0x37 returned 0 after 12029 usecs