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=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FAKE_REPLY_C,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 789E4C432C0 for ; Thu, 21 Nov 2019 17:55:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3C5A520658 for ; Thu, 21 Nov 2019 17:55:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574358910; bh=2EPdODy+7MNcUT49xdDaA0T1l27GqQB5Ebpa+Jv/aD8=; h=Date:From:To:Cc:Subject:In-Reply-To:List-ID:From; b=Dr7Ib33SwrMBErXvbvZbeKhfFjZ/kElcuBObnHDsT9j5b1riruWwqFUW5b82H3XYw BLXyqJHh17lFUzE769bo7MZk8CPAzkWfeZEuJT3vb9likjJVK6pvik2PUt9efn3NTQ PRTSrA3m3N+Z7TWsdbYRdVe44Rop61+9OLnmIIh0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726333AbfKURzJ (ORCPT ); Thu, 21 Nov 2019 12:55:09 -0500 Received: from mail.kernel.org ([198.145.29.99]:45642 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726293AbfKURzJ (ORCPT ); Thu, 21 Nov 2019 12:55:09 -0500 Received: from localhost (unknown [69.71.4.100]) (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 950302068F; Thu, 21 Nov 2019 17:55:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574358908; bh=2EPdODy+7MNcUT49xdDaA0T1l27GqQB5Ebpa+Jv/aD8=; h=Date:From:To:Cc:Subject:In-Reply-To:From; b=0xXJEOJWkxchQu9hKjT7ONzVckkDAv81CwAEZjHdWzA/SdPnXfZMnW0lRtHTsPI0R qjHZmhu1Krn9CtV8y3H7dPWy/s2/8tGF3VOmsIB7uQWSDte8BDRqNwX8nBTz2yGDzw HxeH2ihyqnuP043D2sGTZU9seQ0mDe7yrQapI+ns= Date: Thu, 21 Nov 2019 11:55:07 -0600 From: Bjorn Helgaas To: Nicholas Johnson Cc: "linux-kernel@vger.kernel.org" , "linux-pci@vger.kernel.org" , "mika.westerberg@linux.intel.com" , "corbet@lwn.net" , "benh@kernel.crashing.org" , "logang@deltatee.com" , Naresh Kamboju Subject: Re: [PATCH v3 1/1] PCI: Fix bug resulting in double hpmemsize being assigned to MMIO window Message-ID: <20191121175507.GA54569@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org [+cc Naresh] On Thu, Nov 21, 2019 at 02:52:41PM +0000, Nicholas Johnson wrote: > On Tue, Nov 19, 2019 at 07:38:28AM -0600, Bjorn Helgaas wrote: > > On Tue, Nov 19, 2019 at 03:17:04AM +0000, Nicholas Johnson wrote: > > > I did just discover linux-next and I built it. Should I be doing this > > > more often to help find regressions? > > > > Yes, if you build and run linux-next, that's a great service because > > it helps find problems before they appear in mainline. > > Funnily enough, I just built Linux next-20191121 and it has a NULL > dereference on start-up, which renders the system unusable. > > Can anybody else please confirm? I enabled most of the new options since > the last linux-next a few days before. > ... > Here is a preliminary bug report (assuming you are meant to report > linux-next bugs here): > https://bugzilla.kernel.org/show_bug.cgi?id=205621 Looks similar to these reports I found by searching for kernfs_find_ns on https://lore.kernel.org/lkml: https://lore.kernel.org/r/000000000000bdfc8e0597ddbde4@google.com https://lore.kernel.org/r/000000000000c1e9090597ddbd9d@google.com https://lore.kernel.org/r/CA+G9fYsrRw2SRb92eROCt6aU==j6Qr9Fe4AmJyn4fMj5gDFt=w@mail.gmail.com Thanks very much for doing this testing and reporting the results. I don't think there's anything more you need to do. It looks like Naresh already cc'd some likely candidates. Bjorn