Re: [PATCH V3 4/6] Add support in arm64 to store the memory information of the IMA measurement log in the kimage used for kexec.

[kernel test robot]

Hi Prakhar,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on arm64/for-next/core]
[also build test WARNING on powerpc/next integrity/next-integrity v5.8-rc6 next-20200720]
[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/Prakhar-Srivastava/Add-support-to-carry-forward-the-IMA-measurement-logs/20200720-232521
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core
config: arm64-allyesconfig (attached as .config)
compiler: aarch64-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
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> arch/arm64/kernel/machine_kexec_file.c:49:5: warning: no previous prototype for 'arch_ima_add_kexec_buffer' [-Wmissing-prototypes]
      49 | int arch_ima_add_kexec_buffer(struct kimage *image, unsigned long load_addr,
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~

vim +/arch_ima_add_kexec_buffer +49 arch/arm64/kernel/machine_kexec_file.c

    40	
    41	/**
    42	 * arch_ima_add_kexec_buffer - do arch-specific steps to add the IMA buffer
    43	 *
    44	 * Architectures should use this function to pass on the IMA buffer
    45	 * information to the next kernel.
    46	 *
    47	 * Return: 0 on success, negative errno on error.
    48	 */
  > 49	int arch_ima_add_kexec_buffer(struct kimage *image, unsigned long load_addr,
    50				      size_t size)
    51	{
    52		image->arch.ima_buffer_addr = load_addr;
    53		image->arch.ima_buffer_size = size;
    54		return 0;
    55	}
    56	

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

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