Re: [PATCH] prctl: Don't compile some of prctl functions when CRUI

[Andrew Morton]

On Sat, 21 Apr 2018 04:37:41 +0800 kbuild test robot <lkp@xxxxxxxxx> wrote:

> I love your patch! Yet something to improve:
> 
> [auto build test ERROR on linus/master]
> [also build test ERROR on v4.17-rc1 next-20180420]
> [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/Sergey-Senozhatsky/prctl-Don-t-compile-some-of-prctl-functions-when-CRUI/20180421-040826
> config: i386-tinyconfig (attached as .config)
> compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
> reproduce:
>         # save the attached .config to linux build tree
>         make ARCH=i386 
> 
> All errors (new ones prefixed by >>):
> 
>    kernel/sys.c: In function 'prctl_set_mm':
> >> kernel/sys.c:2108:10: error: implicit declaration of function 'prctl_set_mm_exe_file'; did you mean 'set_mm_exe_file'? [-Werror=implicit-function-declaration]
>       return prctl_set_mm_exe_file(mm, (unsigned int)addr);
>              ^~~~~~~~~~~~~~~~~~~~~

"prctl: don't compile some of prctl functions when CRUI disabled" was a
fix against "prctl: remove non PR_SET_MM_MAP operations", and it
appears that the base patch wasn't applied when this test was
performed.