Hi Aaron,

[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on jeyu/modules-next]
[also build test WARNING on v5.16-rc7 next-20211224]
[cannot apply to linus/master]
[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/Aaron-Tomlin/module-Move-all-into-module/20211229-063051
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux.git modules-next
config: alpha-randconfig-s032-20211228 (https://download.01.org/0day-ci/archive/20211229/202112291156.o8nytvqf-lkp(a)intel.com/config)
compiler: alpha-linux-gcc (GCC) 11.2.0
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-dirty
        # https://github.com/0day-ci/linux/commit/dca0a654ac33ddd67bc916d2b906e610d94d9dfc
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Aaron-Tomlin/module-Move-all-into-module/20211229-063051
        git checkout dca0a654ac33ddd67bc916d2b906e610d94d9dfc
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=alpha SHELL=/bin/bash

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


sparse warnings: (new ones prefixed by >>)
   kernel/module/kallsyms.c: note: in included file:
   include/linux/module.h:380:3: sparse: sparse: symbol 'mod_tree' was not declared. Should it be static?
>> kernel/module/kallsyms.c:178:23: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct mod_kallsyms [noderef] __rcu *kallsyms @@     got void * @@
   kernel/module/kallsyms.c:178:23: sparse:     expected struct mod_kallsyms [noderef] __rcu *kallsyms
   kernel/module/kallsyms.c:178:23: sparse:     got void *
>> kernel/module/kallsyms.c:180:12: sparse: sparse: dereference of noderef expression
   kernel/module/kallsyms.c:181:12: sparse: sparse: dereference of noderef expression
   kernel/module/kallsyms.c:183:12: sparse: sparse: dereference of noderef expression
   kernel/module/kallsyms.c:184:12: sparse: sparse: dereference of noderef expression
   kernel/module/kallsyms.c:193:18: sparse: sparse: dereference of noderef expression
   kernel/module/kallsyms.c:194:35: sparse: sparse: dereference of noderef expression
   kernel/module/kallsyms.c:195:20: sparse: sparse: dereference of noderef expression
   kernel/module/kallsyms.c:200:32: sparse: sparse: dereference of noderef expression
   kernel/module/kallsyms.c:203:45: sparse: sparse: dereference of noderef expression

vim +178 kernel/module/kallsyms.c

   163	
   164	/*
   165	 * We use the full symtab and strtab which layout_symtab arranged to
   166	 * be appended to the init section.  Later we switch to the cut-down
   167	 * core-only ones.
   168	 */
   169	void add_kallsyms(struct module *mod, const struct load_info *info)
   170	{
   171		unsigned int i, ndst;
   172		const Elf_Sym *src;
   173		Elf_Sym *dst;
   174		char *s;
   175		Elf_Shdr *symsec = &info->sechdrs[info->index.sym];
   176	
   177		/* Set up to point into init section. */
 > 178		mod->kallsyms = mod->init_layout.base + info->mod_kallsyms_init_off;
   179	
 > 180		mod->kallsyms->symtab = (void *)symsec->sh_addr;
   181		mod->kallsyms->num_symtab = symsec->sh_size / sizeof(Elf_Sym);
   182		/* Make sure we get permanent strtab: don't use info->strtab. */
   183		mod->kallsyms->strtab = (void *)info->sechdrs[info->index.str].sh_addr;
   184		mod->kallsyms->typetab = mod->init_layout.base + info->init_typeoffs;
   185	
   186		/*
   187		 * Now populate the cut down core kallsyms for after init
   188		 * and set types up while we still have access to sections.
   189		 */
   190		mod->core_kallsyms.symtab = dst = mod->core_layout.base + info->symoffs;
   191		mod->core_kallsyms.strtab = s = mod->core_layout.base + info->stroffs;
   192		mod->core_kallsyms.typetab = mod->core_layout.base + info->core_typeoffs;
   193		src = mod->kallsyms->symtab;
   194		for (ndst = i = 0; i < mod->kallsyms->num_symtab; i++) {
   195			mod->kallsyms->typetab[i] = elf_type(src + i, info);
   196			if (i == 0 || is_livepatch_module(mod) ||
   197			    is_core_symbol(src+i, info->sechdrs, info->hdr->e_shnum,
   198					   info->index.pcpu)) {
   199				mod->core_kallsyms.typetab[ndst] =
   200				    mod->kallsyms->typetab[i];
   201				dst[ndst] = src[i];
   202				dst[ndst++].st_name = s - mod->core_kallsyms.strtab;
   203				s += strlcpy(s, &mod->kallsyms->strtab[src[i].st_name],
   204					     KSYM_NAME_LEN) + 1;
   205			}
   206		}
   207		mod->core_kallsyms.num_symtab = ndst;
   208	}
   209	

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