[android-common:android11-5.4 1/1] arch/arm/mm/fault.c:28:6: sparse: sparse: symbol 'copy_from_kernel_nofault_allowed' was not declared. Should it be static?

[kernel test robot <lkp@intel.com>]

tree:   https://android.googlesource.com/kernel/common android11-5.4
head:   1aec9e76fe4a65b0a26fa1b30bdb3400d9728b2d
commit: 11bb05969b19050a0f9baa6bcd1cb23439b267e3 [1/1] ARM: 9350/1: fault: Implement copy_from_kernel_nofault_allowed()
config: arm-randconfig-r111-20250429 (https://download.01.org/0day-ci/archive/20250429/202504292248.4b9Un345-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 8.5.0
reproduce: (https://download.01.org/0day-ci/archive/20250429/202504292248.4b9Un345-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202504292248.4b9Un345-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> arch/arm/mm/fault.c:28:6: sparse: sparse: symbol 'copy_from_kernel_nofault_allowed' was not declared. Should it be static?
   arch/arm/mm/fault.c:217:15: sparse: sparse: incorrect type in assignment (different base types) @@     expected restricted vm_fault_t [usertype] fault @@     got int @@
   arch/arm/mm/fault.c:217:15: sparse:     expected restricted vm_fault_t [usertype] fault
   arch/arm/mm/fault.c:217:15: sparse:     got int
   arch/arm/mm/fault.c:229:23: sparse: sparse: incorrect type in assignment (different base types) @@     expected restricted vm_fault_t [usertype] fault @@     got int @@
   arch/arm/mm/fault.c:229:23: sparse:     expected restricted vm_fault_t [usertype] fault
   arch/arm/mm/fault.c:229:23: sparse:     got int
   arch/arm/mm/fault.c:342:13: sparse: sparse: restricted vm_fault_t degrades to integer
   arch/arm/mm/fault.c:342:13: sparse: sparse: restricted vm_fault_t degrades to integer
   arch/arm/mm/fault.c:375:24: sparse: sparse: restricted vm_fault_t degrades to integer

vim +/copy_from_kernel_nofault_allowed +28 arch/arm/mm/fault.c

    27	
  > 28	bool copy_from_kernel_nofault_allowed(const void *unsafe_src, size_t size)
    29	{
    30		unsigned long addr = (unsigned long)unsafe_src;
    31	
    32		return addr >= TASK_SIZE && ULONG_MAX - addr >= size;
    33	}
    34	

-- 
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