[peterz-queue:modules/core 1/5] kernel/module.c:2170:35: sparse: sparse: incompatible types in comparison expression (different base types):

[peterz-queue:modules/core 1/5] kernel/module.c:2170:35: sparse: sparse: incompatible types in comparison expression (different base types):

[kbuild test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git modules/core
head:   302719338a541af0e2d2ce9d0fec99e2dde09dae
commit: 220e0e0c6f6e0607d5effd71e0a67129405a3f7e [1/5] module,klp: Add module_section_{en,dis}able_*()
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-dirty
        git checkout 220e0e0c6f6e0607d5effd71e0a67129405a3f7e
        make ARCH=x86_64 allmodconfig
        make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

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


sparse warnings: (new ones prefixed by >>)

   kernel/module.c:1413:1: sparse: sparse: directive in macro's argument list
   kernel/module.c:1415:1: sparse: sparse: directive in macro's argument list
   include/linux/rbtree.h:84:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
   include/linux/rbtree.h:84:9: sparse:    struct rb_node [noderef] <asn:4> *
   include/linux/rbtree.h:84:9: sparse:    struct rb_node *
   include/linux/rbtree.h:84:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
   include/linux/rbtree.h:84:9: sparse:    struct rb_node [noderef] <asn:4> *
   include/linux/rbtree.h:84:9: sparse:    struct rb_node *
   kernel/module.c:2158:9: sparse: sparse: using member 'sh_addr' in incomplete struct Elf64_Shdr
   kernel/module.c:2159:9: sparse: sparse: using member 'sh_size' in incomplete struct Elf64_Shdr
   kernel/module.c:2160:38: sparse: sparse: using member 'sh_addr' in incomplete struct Elf64_Shdr
   kernel/module.c:2160:52: sparse: sparse: using member 'sh_size' in incomplete struct Elf64_Shdr
>> kernel/module.c:2170:35: sparse: sparse: incompatible types in comparison expression (different base types):
>> kernel/module.c:2170:35: sparse:    struct Elf64_Shdr *
>> kernel/module.c:2170:35: sparse:    struct elf64_shdr [usertype] *
   kernel/module.c:2171:56: sparse: sparse: using member 'sh_name' in incomplete struct Elf64_Shdr
>> kernel/module.c:2170:73: sparse: sparse: bad argument type for ++/--
   kernel/module.c:3669:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/module.c:3669:9: sparse:    struct mod_kallsyms [noderef] <asn:4> *
   kernel/module.c:3669:9: sparse:    struct mod_kallsyms *
   kernel/module.c:4102:41: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/module.c:4102:41: sparse:    struct mod_kallsyms [noderef] <asn:4> *
   kernel/module.c:4102:41: sparse:    struct mod_kallsyms *
   kernel/module.c:4245:28: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/module.c:4245:28: sparse:    struct mod_kallsyms [noderef] <asn:4> *
   kernel/module.c:4245:28: sparse:    struct mod_kallsyms *
   kernel/module.c:4267:41: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/module.c:4267:41: sparse:    struct mod_kallsyms [noderef] <asn:4> *
   kernel/module.c:4267:41: sparse:    struct mod_kallsyms *

vim +2170 kernel/module.c

  2155	
  2156	static void __frob_section(struct Elf_Shdr *sec, int (*set_memory)(unsigned long start, int num_pages))
  2157	{
> 2158		BUG_ON((unsigned long)sec->sh_addr & (PAGE_SIZE-1));
  2159		BUG_ON((unsigned long)sec->sh_size & (PAGE_SIZE-1));
  2160		set_memory((unsigned long)sec->sh_addr, sec->sh_size >> PAGE_SHIFT);
  2161	}
  2162	
  2163	static void frob_section(struct module *mod, const char *section,
  2164				 int (*set_memory)(unsigned long start, int num_pages))
  2165	{
  2166		struct klp_modinfo *info = mod->klp_info;
  2167		const char *secname;
  2168		struct Elf_Shdr *s;
  2169	
> 2170		for (s = info->sechdrs; s < info->sechdrs + info->hdr.e_shnum; s++) {
  2171			secname = mod->klp_info->secstrings + s->sh_name;
  2172			if (strcmp(secname, section))
  2173				continue;
  2174	
  2175			__frob_section(s, set_memory);
  2176		}
  2177	}
  2178	

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