tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git devel/hardening
head:   4b677c85590798c3141758109cc5be7ba068a3ff
commit: 4bc8c6167ed8206657c42b55791d742765aea0fc [37/69] coredump: Proactively round up to kmalloc bucket size
config: arm-randconfig-s043-20220925
compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git/commit/?id=4bc8c6167ed8206657c42b55791d742765aea0fc
        git remote add kees https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git
        git fetch --no-tags kees devel/hardening
        git checkout 4bc8c6167ed8206657c42b55791d742765aea0fc
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   arm-linux-gnueabi-ld: fs/coredump.o: in function `expand_corename':
>> fs/coredump.c:73: undefined reference to `kmalloc_size_roundup'
   arm-linux-gnueabi-ld: drivers/dma-buf/dma-resv.o: in function `dma_resv_list_alloc':
   drivers/dma-buf/dma-resv.c:104: undefined reference to `kmalloc_size_roundup'
   arm-linux-gnueabi-ld: net/core/skbuff.o: in function `kmalloc_reserve':
   net/core/skbuff.c:356: undefined reference to `kmalloc_size_roundup'


vim +73 fs/coredump.c

    68	
    69	static int expand_corename(struct core_name *cn, int size)
    70	{
    71		char *corename;
    72	
  > 73		size = kmalloc_size_roundup(size);
    74		corename = krealloc(cn->corename, size, GFP_KERNEL);
    75	
    76		if (!corename)
    77			return -ENOMEM;
    78	
    79		if (size > core_name_size) /* racy but harmless */
    80			core_name_size = size;
    81	
    82		cn->size = size;
    83		cn->corename = corename;
    84		return 0;
    85	}
    86	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp