[PATCH 4/5] keys: define build time generated ephemeral kernel CA key

[kernel test robot]

Hi Nayna,

I love your patch! Yet something to improve:

[auto build test ERROR on kbuild/for-next]
[also build test ERROR on integrity/next-integrity linus/master security/next-testing v5.11-rc7]
[cannot apply to next-20210211]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Nayna-Jain/ima-kernel-build-support-for-loading-the-kernel-module-signing-key/20210212-040003
base:   https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git for-next
config: nds32-allyesconfig (attached as .config)
compiler: nds32le-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/84acbcedcd14fe43bf648857b4642c9bf426afd4
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Nayna-Jain/ima-kernel-build-support-for-loading-the-kernel-module-signing-key/20210212-040003
        git checkout 84acbcedcd14fe43bf648857b4642c9bf426afd4
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=nds32 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp at intel.com>

All errors (new ones prefixed by >>):

   Can't open certs/signing_key.crt for reading, No such file or directory
>> 139789059654784:error:02001002:system library:fopen:No such file or directory:../crypto/bio/bss_file.c:69:fopen('certs/signing_key.crt','r')
>> 139789059654784:error:2006D080:BIO routines:BIO_new_file:no such file:../crypto/bio/bss_file.c:76:
   unable to load certificate

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org