Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752103AbdFME3j (ORCPT ); Tue, 13 Jun 2017 00:29:39 -0400 Received: from ale.deltatee.com ([207.54.116.67]:48967 "EHLO ale.deltatee.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750899AbdFME3h (ORCPT ); Tue, 13 Jun 2017 00:29:37 -0400 To: Greg Kroah-Hartman References: <5933fe2d.V33ODGPU9noDVuyF%fengguang.wu@intel.com> <20170606175552.GA12672@bhelgaas-glaptop.roam.corp.google.com> <20170612200852.GA28578@bhelgaas-glaptop.roam.corp.google.com> <61e11e67-6c1b-ef1e-5fb8-a7c9efb17666@deltatee.com> <20170613041842.GA13308@kroah.com> Cc: Bjorn Helgaas , kernel test robot , Linus Torvalds , LKP , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-doc@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Bjorn Helgaas , wfg@linux.intel.com, Alan Cox , Arnd Bergmann , Linus Walleij , David Airlie , David Herrmann , Daniel Vetter From: Logan Gunthorpe Message-ID: Date: Mon, 12 Jun 2017 22:29:20 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: <20170613041842.GA13308@kroah.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-SA-Exim-Connect-IP: 68.147.191.165 X-SA-Exim-Rcpt-To: daniel.vetter@ffwll.ch, dh.herrmann@gmail.com, airlied@linux.ie, linus.walleij@linaro.org, arnd@arndb.de, alan@linux.intel.com, wfg@linux.intel.com, bhelgaas@google.com, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-doc@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, lkp@01.org, torvalds@linux-foundation.org, fengguang.wu@intel.com, helgaas@kernel.org, gregkh@linuxfoundation.org X-SA-Exim-Mail-From: logang@deltatee.com Subject: Re: [Merge tag 'pci-v4.12-changes' of git] 857f864014: BUG: unable to handle kernel NULL pointer dereference at 00000000000000a8 X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:24:06 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 484 Lines: 13 On 12/06/17 10:18 PM, Greg Kroah-Hartman wrote: > What test causes so many major numbers to be allocated? Is this > in-kernel test code? Do you really have a system that requires so many > different drivers that all want a dynamic char major? This is a 0day kernel robot test. I'm not sure the motivations of its design but it seems to be similar to an allyesconfig. So all/most modules are compiled in and allocating their char device regions on boot of a qemu instance. Logan