On Thu, Feb 08, 2018 at 01:25:39AM +0100, Daniel Borkmann wrote: > On 02/08/2018 01:20 AM, Philip Li wrote: > > On Thu, Feb 08, 2018 at 02:09:41AM +0200, Michael S. Tsirkin wrote: > >> On Wed, Feb 07, 2018 at 03:02:57PM +0800, kbuild test robot wrote: > >>> tree: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git vhost > >>> head: 96bcd04462b99e2c80e09f6537770a0ca6b288d0 > >>> commit: cc1d1dc07885803981520a5303ef5b130f2ca2e8 [19/20] mm: support reporting free page blocks > >>> config: x86_64-rhel > >>> compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 > >>> reproduce: > >>> git checkout cc1d1dc07885803981520a5303ef5b130f2ca2e8 > >>> # save the attached .config to linux build tree > >>> make ARCH=x86_64 > >>> > >>> All warnings (new ones prefixed by >>): > >> > >> I'm sorry, what exactly does this mean? > > sorry that the script has issue to provide empty warnings here, which > > was supposed to list warnings with >> added to new ones like below. > > > > In file included from kernel//bpf/core.c:29:0: > >>> include/linux/bpf.h:72:8: error: duplicate member 'security' > > void *security; > > ^ > > > > We will follow up to check what goes wrong. > > Certainly odd, even in that tree/commit/header [0] I cannot see a duplicate > security member in struct bpf_map. that is one example i try to show what looks like for the >> prefix, and i copy it from https://lists.01.org/pipermail/kbuild-all/2018-February/042706.html, which is not for vhost repo. Here for this report, the issue is as title "Warning: arch/x86/tools/test_get_len found difference at <pm_restore_gfp_mask>:ffffffff811aa5f0". > > [0] https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git/tree/include/linux/bpf.h?h=vhost&id=cc1d1dc07885803981520a5303ef5b130f2ca2e8#n45