tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git devel/hardening
head:   ffe9a5cec7107d9cb62ca7bb3925821467f43d38
commit: fec0fefc91896f14a5dfd558c98966773a7b3250 [40/47] mempool: Use kmalloc_size_roundup() to match ksize() usage
config: i386-tinyconfig
compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git/commit/?id=fec0fefc91896f14a5dfd558c98966773a7b3250
        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 fec0fefc91896f14a5dfd558c98966773a7b3250
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 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 >>):

   ld: mm/mempool.o: in function `mempool_kmalloc':
>> mempool.c:(.text+0xc): undefined reference to `kmalloc_size_roundup'
   ld: drivers/base/devres.o: in function `check_dr_size':
   devres.c:(.text+0x104): undefined reference to `kmalloc_size_roundup'

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