Re: [kbuild-all] [vhost:vhost 19/20] Warning: arch/x86/tools/test_get_len found difference at <pm_restore_gfp_mask>:ffffffff811aa5f0

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On 02/08/2018 01:37 AM, Philip Li wrote:
> 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.

Ok, indeed, some merge resolution issue in android stable kernel tree [1].
I didn't parse from your prior mail that you just meant this as a possible
example. Anyway, thanks for clarifying.

  [1] https://android.googlesource.com/kernel/common/+/6bbd2da69c5c2b8ab57cc2171b9abe2c9b82f53e%5E%21/

> 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

Thanks,
Daniel



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