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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 C87F4C433E4 for ; Thu, 4 Jun 2020 06:44:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AE36A20825 for ; Thu, 4 Jun 2020 06:44:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727782AbgFDGos (ORCPT ); Thu, 4 Jun 2020 02:44:48 -0400 Received: from mga09.intel.com ([134.134.136.24]:30581 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727774AbgFDGoq (ORCPT ); Thu, 4 Jun 2020 02:44:46 -0400 IronPort-SDR: V6OsyqcfcyOBgZQlHSsptKANTSuPSl6zBXklPJyl2I4yhhXIS53l9C+c2oH+ZlsHow0c8Sny6k 1rEBEMBBocsg== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Jun 2020 23:44:45 -0700 IronPort-SDR: Hi+ARyh48YSb32/Pt8vOy4p7zx/cFnMDyZyMrnGYxWixi6a4PkX1oDrgQ4wPYlujYL2xH3fTes IcRlwA5YSB6w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,471,1583222400"; d="scan'208";a="445398016" Received: from iweiny-desk2.sc.intel.com ([10.3.52.147]) by orsmga005.jf.intel.com with ESMTP; 03 Jun 2020 23:44:44 -0700 Date: Wed, 3 Jun 2020 23:44:44 -0700 From: Ira Weiny To: Mike Rapoport Cc: Guenter Roeck , Andrew Morton , linux-kernel@vger.kernel.org, Thomas Bogendoerfer , "James E.J. Bottomley" , Helge Deller , Benjamin Herrenschmidt , Paul Mackerras , "David S. Miller" , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, "H. Peter Anvin" , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Chris Zankel , Max Filippov , Dan Williams , linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org, dri-devel@lists.freedesktop.org, Christian Koenig , Al Viro , Christoph Hellwig Subject: Re: [PATCH] arch/{mips,sparc,microblaze,powerpc}: Don't enable pagefault/preempt twice Message-ID: <20200604064444.GD1740285@iweiny-DESK2.sc.intel.com> References: <20200519184031.GB3356843@iweiny-DESK2.sc.intel.com> <20200519194215.GA71941@roeck-us.net> <20200520051315.GA3660833@iweiny-DESK2.sc.intel.com> <20200521174250.GB176262@iweiny-DESK2.sc.intel.com> <20200603135736.e7b5ded0082a81ae6d9067a0@linux-foundation.org> <20200603211416.GA1740285@iweiny-DESK2.sc.intel.com> <3538c8ad-674e-d310-d870-4ef6888092ed@roeck-us.net> <20200604062226.GA1740345@iweiny-DESK2.sc.intel.com> <20200604063745.GB202650@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200604063745.GB202650@kernel.org> User-Agent: Mutt/1.11.1 (2018-12-01) Sender: linux-parisc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org On Thu, Jun 04, 2020 at 09:37:45AM +0300, Mike Rapoport wrote: > On Wed, Jun 03, 2020 at 11:22:26PM -0700, Ira Weiny wrote: > > On Wed, Jun 03, 2020 at 04:44:17PM -0700, Guenter Roeck wrote: > > > > With linux-next on sparc I too see the spinlock issue; something like: > > > > ... > > Starting syslogd: BUG: spinlock recursion on CPU#0, S01syslogd/139 > > lock: 0xf53ef350, .magic: dead4ead, .owner: S01syslogd/139, .owner_cpu: 0 > > CPU: 0 PID: 139 Comm: S01syslogd Not tainted 5.7.0-next-20200603 #1 > > [f0067d00 : > > do_raw_spin_lock+0xa8/0xd8 ] > > [f00d598c : > > copy_page_range+0x328/0x804 ] > > [f0025c34 : > > dup_mm+0x334/0x434 ] > > [f0027198 : > > copy_process+0x1248/0x12d4 ] > > [f00273b8 : > > _do_fork+0x54/0x30c ] > > [f00276e4 : > > do_fork+0x5c/0x6c ] > > [f000de44 : > > sparc_do_fork+0x18/0x38 ] > > [f000b7f4 : > > do_syscall+0x34/0x40 ] > > [5010cd4c : > > 0x5010cd4c ] > > > > > > I'm going to bisect between there and HEAD. > > The sparc issue should be fixed by > > https://lore.kernel.org/lkml/20200526173302.377-1-will@kernel.org Saw your other email. And yes they are! Thanks! Ira > > > Ira > > -- > Sincerely yours, > Mike.