[intel-lts:4.19/android_s 1/2] lib/usercopy.c:64:9: sparse: sparse: incorrect type in initializer (different address spaces)

[intel-lts:4.19/android_s 1/2] lib/usercopy.c:64:9: sparse: sparse: incorrect type in initializer (different address spaces)

[kernel test robot]

tree:   https://android.googlesource.com/kernel/common 4.19/android_s
head:   71b63f21a8292ca960a4c363d69d5e95c0265597
commit: 6a1e36af9d0e008f78f324581e5f1cb5c4393aee [1/2] BACKPORT: lib: introduce copy_struct_from_user() helper
config: m68k-randconfig-r123-20240406 (https://download.01.org/0day-ci/archive/20240409/202404091648.NSToEhRO-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20240409/202404091648.NSToEhRO-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/202404091648.NSToEhRO-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> lib/usercopy.c:64:9: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const *__gu_ptr @@     got unsigned long [noderef] <asn:1> * @@
   lib/usercopy.c:64:9: sparse:     expected void const *__gu_ptr
   lib/usercopy.c:64:9: sparse:     got unsigned long [noderef] <asn:1> *
   lib/usercopy.c:75:17: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const *__gu_ptr @@     got unsigned long [noderef] <asn:1> * @@
   lib/usercopy.c:75:17: sparse:     expected void const *__gu_ptr
   lib/usercopy.c:75:17: sparse:     got unsigned long [noderef] <asn:1> *

vim +64 lib/usercopy.c

    35	
    36	/**
    37	 * check_zeroed_user: check if a userspace buffer only contains zero bytes
    38	 * @from: Source address, in userspace.
    39	 * @size: Size of buffer.
    40	 *
    41	 * This is effectively shorthand for "memchr_inv(from, 0, size) == NULL" for
    42	 * userspace addresses (and is more efficient because we don't care where the
    43	 * first non-zero byte is).
    44	 *
    45	 * Returns:
    46	 *  * 0: There were non-zero bytes present in the buffer.
    47	 *  * 1: The buffer was full of zero bytes.
    48	 *  * -EFAULT: access to userspace failed.
    49	 */
    50	int check_zeroed_user(const void __user *from, size_t size)
    51	{
    52		unsigned long val;
    53		uintptr_t align = (uintptr_t) from % sizeof(unsigned long);
    54	
    55		if (unlikely(size == 0))
    56			return 1;
    57	
    58		from -= align;
    59		size += align;
    60	
    61		if (!user_access_begin(VERIFY_READ, from, size))
    62			return -EFAULT;
    63	
  > 64		unsafe_get_user(val, (unsigned long __user *) from, err_fault);

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