From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qg0-f54.google.com (mail-qg0-f54.google.com [209.85.192.54]) by kanga.kvack.org (Postfix) with ESMTP id 4B04E2802C8 for ; Mon, 6 Jul 2015 17:47:11 -0400 (EDT) Received: by qgef3 with SMTP id f3so25905385qge.0 for ; Mon, 06 Jul 2015 14:47:11 -0700 (PDT) Received: from relay4-d.mail.gandi.net (relay4-d.mail.gandi.net. [2001:4b98:c:538::196]) by mx.google.com with ESMTPS id x132si22442663qkx.88.2015.07.06.14.47.09 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Mon, 06 Jul 2015 14:47:10 -0700 (PDT) Date: Mon, 6 Jul 2015 14:47:05 -0700 From: josh@joshtriplett.org Subject: Re: kernel/uid16.c:184:2: error: implicit declaration of function 'groups_alloc' Message-ID: <20150706214705.GA14305@cloud> References: <201507050734.RcWSMvjj%fengguang.wu@intel.com> <20150706135601.bd75127ce72297e70a396bd3@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150706135601.bd75127ce72297e70a396bd3@linux-foundation.org> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: kbuild test robot , Iulia Manda , kbuild-all@01.org, "Paul E. McKenney" , Linux Memory Management List Andrew, On Mon, Jul 06, 2015 at 01:56:01PM -0700, Andrew Morton wrote: > On Sun, 5 Jul 2015 07:30:38 +0800 kbuild test robot wrote: > > > tree: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > > head: 5c755fe142b421d295e7dd64a9833c12abbfd28e > > commit: 2813893f8b197a14f1e1ddb04d99bce46817c84a kernel: conditionally support non-root users, groups and capabilities > > date: 3 months ago > > config: openrisc-allnoconfig (attached as .config) > > reproduce: > > wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross > > chmod +x ~/bin/make.cross > > git checkout 2813893f8b197a14f1e1ddb04d99bce46817c84a > > # save the attached .config to linux build tree > > make.cross ARCH=openrisc > > > > All error/warnings (new ones prefixed by >>): > > > > kernel/uid16.c: In function 'SYSC_setgroups16': > > >> kernel/uid16.c:184:2: error: implicit declaration of function 'groups_alloc' > > kernel/uid16.c:184:13: warning: assignment makes pointer from integer without a cast > > > Iulia, does the below look corect? It will make setgroups16() return > -ENOMEM, which seems inappropriate. [...snip...] How is the .config valid, given that UID16 *depends* on MULTIUSER? This shouldn't be possible, and I know Iulia specifically addressed this case by adding that dependency (without which this *exact* error would occur). Is something doing "select UID16" and missing its dependency? I don't see any selects for UID16 anywhere in-tree. - Josh Triplett -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org