arch/arm/mm/init.c:718: warning: No description found for parameter 'perms'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   bee0e7762ad2c6025b9f5245c040fcc36ef2bde8
commit: 11ce4b33aedc65198d7bc9669344ebca5ee36a41 ARM: 8672/1: mm: remove tasklist locking from update_sections_early()
date:   7 years ago
config: arm-randconfig-002-20231123 (https://download.01.org/0day-ci/archive/20231206/202312061028.bA2IkpFv-lkp@xxxxxxxxx/config)
compiler: arm-linux-gnueabi-gcc (GCC) 7.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231206/202312061028.bA2IkpFv-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202312061028.bA2IkpFv-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

   In file included from arch/arm/mm/init.c:38:0:
   arch/arm/include/asm/fixmap.h:38:35: warning: '__end_of_fixed_addresses' defined but not used [-Wunused-const-variable=]
    static const enum fixed_addresses __end_of_fixed_addresses =
                                      ^~~~~~~~~~~~~~~~~~~~~~~~
>> arch/arm/mm/init.c:718: warning: No description found for parameter 'perms'
>> arch/arm/mm/init.c:718: warning: No description found for parameter 'n'


vim +/perms +718 arch/arm/mm/init.c

1e6b48116a9504 Kees Cook         2014-04-03  711  
11ce4b33aedc65 Grygorii Strashko 2017-04-25  712  /**
11ce4b33aedc65 Grygorii Strashko 2017-04-25  713   * update_sections_early intended to be called only through stop_machine
11ce4b33aedc65 Grygorii Strashko 2017-04-25  714   * framework and executed by only one CPU while all other CPUs will spin and
11ce4b33aedc65 Grygorii Strashko 2017-04-25  715   * wait, so no locking is required in this function.
11ce4b33aedc65 Grygorii Strashko 2017-04-25  716   */
08925c2f124f1b Laura Abbott      2015-11-30  717  static void update_sections_early(struct section_perm perms[], int n)
1e6b48116a9504 Kees Cook         2014-04-03 @718  {
08925c2f124f1b Laura Abbott      2015-11-30  719  	struct task_struct *t, *s;
08925c2f124f1b Laura Abbott      2015-11-30  720  
08925c2f124f1b Laura Abbott      2015-11-30  721  	for_each_process(t) {
08925c2f124f1b Laura Abbott      2015-11-30  722  		if (t->flags & PF_KTHREAD)
08925c2f124f1b Laura Abbott      2015-11-30  723  			continue;
08925c2f124f1b Laura Abbott      2015-11-30  724  		for_each_thread(t, s)
08925c2f124f1b Laura Abbott      2015-11-30  725  			set_section_perms(perms, n, true, s->mm);
08925c2f124f1b Laura Abbott      2015-11-30  726  	}
08925c2f124f1b Laura Abbott      2015-11-30  727  	set_section_perms(perms, n, true, current->active_mm);
08925c2f124f1b Laura Abbott      2015-11-30  728  	set_section_perms(perms, n, true, &init_mm);
08925c2f124f1b Laura Abbott      2015-11-30  729  }
08925c2f124f1b Laura Abbott      2015-11-30  730  

:::::: The code at line 718 was first introduced by commit
:::::: 1e6b48116a95046ec51f3d40f83aff8b006674d7 ARM: mm: allow non-text sections to be non-executable

:::::: TO: Kees Cook <keescook@xxxxxxxxxxxx>
:::::: CC: Kees Cook <keescook@xxxxxxxxxxxx>

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