Re: [PATCH v5 10/10] lkdtm: Add test for XPFO

[Tycho Andersen <tycho@docker.com>]

On Sun, Aug 13, 2017 at 04:24:23AM +0800, kbuild test robot wrote:
> Hi Juerg,
> 
> [auto build test ERROR on arm64/for-next/core]
> [also build test ERROR on v4.13-rc4]
> [cannot apply to next-20170811]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
> 
> url:    https://github.com/0day-ci/linux/commits/Tycho-Andersen/Add-support-for-eXclusive-Page-Frame-Ownership/20170813-035705
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core
> config: x86_64-randconfig-x016-201733 (attached as .config)
> compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
> reproduce:
>         # save the attached .config to linux build tree
>         make ARCH=x86_64 
> 
> All errors (new ones prefixed by >>):
> 
>    drivers/misc/lkdtm_xpfo.c: In function 'read_user_with_flags':
> >> drivers/misc/lkdtm_xpfo.c:31:14: error: implicit declaration of function 'user_virt_to_phys' [-Werror=implicit-function-declaration]
>      phys_addr = user_virt_to_phys(user_addr);
>                  ^~~~~~~~~~~~~~~~~
>    cc1: some warnings being treated as errors

These are both the same error, looks like I forgot a dummy prototype
in the non CONFIG_XPFO case, I'll fix it in the next version.

Tycho

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