[openeuler:OLK-6.6 1336/14122] include/linux/uaccess.h:213:16: sparse: sparse: incorrect type in argument 1 (different address spaces)

[openeuler:OLK-6.6 1336/14122] include/linux/uaccess.h:213:16: sparse: sparse: incorrect type in argument 1 (different address spaces)

[kernel test robot]

tree:   https://gitee.com/openeuler/kernel.git OLK-6.6
head:   81a41d2ac1de43215c014bc71d907a026042e55b
commit: 975e216e36aa3f7aba9d8e1e1d6cbba7cf692ad7 [1336/14122] arm64: add support for machine check error safe
config: arm64-randconfig-r123-20240926 (https://download.01.org/0day-ci/archive/20240927/202409270023.ToC1weNo-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce: (https://download.01.org/0day-ci/archive/20240927/202409270023.ToC1weNo-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/202409270023.ToC1weNo-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   lib/iov_iter.c: note: in included file (through include/linux/sched/task.h, include/linux/sched/signal.h, include/linux/rcuwait.h, ...):
>> include/linux/uaccess.h:213:16: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const [noderef] __user *ptr @@     got void *dst @@
   include/linux/uaccess.h:213:16: sparse:     expected void const [noderef] __user *ptr
   include/linux/uaccess.h:213:16: sparse:     got void *dst
   lib/iov_iter.c: note: in included file:
   include/net/checksum.h:33:39: sparse: sparse: incorrect type in argument 3 (different base types) @@     expected restricted __wsum [usertype] sum @@     got unsigned int @@
   include/net/checksum.h:33:39: sparse:     expected restricted __wsum [usertype] sum
   include/net/checksum.h:33:39: sparse:     got unsigned int
   include/net/checksum.h:33:39: sparse: sparse: incorrect type in argument 3 (different base types) @@     expected restricted __wsum [usertype] sum @@     got unsigned int @@
   include/net/checksum.h:33:39: sparse:     expected restricted __wsum [usertype] sum
   include/net/checksum.h:33:39: sparse:     got unsigned int
   include/net/checksum.h:41:45: sparse: sparse: incorrect type in argument 3 (different base types) @@     expected restricted __wsum [usertype] sum @@     got unsigned int @@
   include/net/checksum.h:41:45: sparse:     expected restricted __wsum [usertype] sum
   include/net/checksum.h:41:45: sparse:     got unsigned int
   include/net/checksum.h:41:45: sparse: sparse: incorrect type in argument 3 (different base types) @@     expected restricted __wsum [usertype] sum @@     got unsigned int @@
   include/net/checksum.h:41:45: sparse:     expected restricted __wsum [usertype] sum
   include/net/checksum.h:41:45: sparse:     got unsigned int

vim +213 include/linux/uaccess.h

ec6347bb43395c Dan Williams 2020-10-05  207  
59feaaa04e929c Tong Tiangen 2023-12-07  208  #ifndef copy_mc_to_user
59feaaa04e929c Tong Tiangen 2023-12-07  209  static inline unsigned long __must_check
59feaaa04e929c Tong Tiangen 2023-12-07  210  copy_mc_to_user(void *dst, const void *src, size_t cnt)
59feaaa04e929c Tong Tiangen 2023-12-07  211  {
59feaaa04e929c Tong Tiangen 2023-12-07  212  	check_object_size(src, cnt, true);
59feaaa04e929c Tong Tiangen 2023-12-07 @213  	return raw_copy_to_user(dst, src, cnt);
59feaaa04e929c Tong Tiangen 2023-12-07  214  }
59feaaa04e929c Tong Tiangen 2023-12-07  215  #endif
59feaaa04e929c Tong Tiangen 2023-12-07  216  

:::::: The code at line 213 was first introduced by commit
:::::: 59feaaa04e929cf051c9b29e28fb9e1299785280 uaccess: add generic fallback version of copy_mc_to_user()

:::::: TO: Tong Tiangen <tongtiangen@huawei.com>
:::::: CC: Tong Tiangen <tongtiangen@huawei.com>

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