From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754419AbbAOOJw (ORCPT ); Thu, 15 Jan 2015 09:09:52 -0500 Received: from bh-25.webhostbox.net ([208.91.199.152]:37079 "EHLO bh-25.webhostbox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754341AbbAOOJu (ORCPT ); Thu, 15 Jan 2015 09:09:50 -0500 Message-ID: <54B7CA15.7000200@roeck-us.net> Date: Thu, 15 Jan 2015 06:09:25 -0800 From: Guenter Roeck User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0 MIME-Version: 1.0 To: Geert Uytterhoeven CC: Stephen Rothwell , Linux-Next , "linux-kernel@vger.kernel.org" , Rob Clark , Daniel Vetter , Benjamin Herrenschmidt , "linuxppc-dev@lists.ozlabs.org" , linux-m68k Subject: Re: linux-next: Tree for Jan 12 (build failures: m68k, ppc) References: <20150112180322.003b44f2@canb.auug.org.au> <20150112162438.GA18723@roeck-us.net> <20150112175920.GC19868@roeck-us.net> In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Authenticated_sender: linux@roeck-us.net X-OutGoing-Spam-Status: No, score=-1.0 X-CTCH-PVer: 0000001 X-CTCH-Spam: Unknown X-CTCH-VOD: Unknown X-CTCH-Flags: 0 X-CTCH-RefID: str=0001.0A020202.54B7CA2E.015C,ss=1,re=0.001,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0 X-CTCH-Score: 0.001 X-CTCH-ScoreCust: 0.000 X-CTCH-Rules: C_4847, X-CTCH-SenderID: linux@roeck-us.net X-CTCH-SenderID-Flags: 0 X-CTCH-SenderID-TotalMessages: 6 X-CTCH-SenderID-TotalSpam: 0 X-CTCH-SenderID-TotalSuspected: 0 X-CTCH-SenderID-TotalConfirmed: 0 X-CTCH-SenderID-TotalBulk: 0 X-CTCH-SenderID-TotalVirus: 0 X-CTCH-SenderID-TotalRecipients: 0 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - bh-25.webhostbox.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - roeck-us.net X-Get-Message-Sender-Via: bh-25.webhostbox.net: mailgid no entry from get_relayhosts_entry X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/15/2015 02:12 AM, Geert Uytterhoeven wrote: > On Mon, Jan 12, 2015 at 6:59 PM, Guenter Roeck wrote: >>>> Build failures, seen since next-20150109: >>>> m68k:allmodconfig >>>> powerpc:ppc6xx_defconfig > > It looks like parisc is also suffering: > http://kisskb.ellerman.id.au/kisskb/buildresult/12343847/ > >>>> Due to: >>>> ERROR: "__get_user_bad" [drivers/gpu/drm/drm.ko] undefined! >>>> make[1]: *** [__modpost] Error 1 >>>> >>>> Caused by commit d34f20d6e2f (drm: Atomic modeset ioctl). >>> >>> Yeah, it needs a get_user() that supports 64-bit data. >>> >> Hi Geert, >> >> I assume you mean m68k, where 64 bit support for get_user has been disabled. >> >> The problem on powerpc is different though: __get_user_nocheck() >> and __get_user_check() use >> unsigned long __gu_val; >> followed by >> __get_user_size(__gu_val, __gu_addr, (size), __gu_err); >> >> __get_user_size() fails in >> if (size > sizeof(x)) >> (x) = __get_user_bad(); >> >> Presumably "unsigned long" is 32 bit on 32 bit powerpc, not 64 bit. >> >> Overall, the explicit 64-bit use of get_user() seems to be quite unusual. > > I noticed you've sent a fix for DRM. > > Doh, and I was just fixing m68k... > Sorry, should have Cc:'d you. Guenter