[gerg-m68knommu:armnommu 3/3] arch/arm/mm/alignment.c:775:25: sparse: sparse: incorrect type in argument 1 (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu.git armnommu
head:   282a7ed48056574071566c6f9a3f4edea6601cf1
commit: 282a7ed48056574071566c6f9a3f4edea6601cf1 [3/3] ARM: versatile: support configuring versatile machine for no-MMU
config: arm-randconfig-r122-20250212 (https://download.01.org/0day-ci/archive/20250212/[email protected]/config)
compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99)
reproduce: (https://download.01.org/0day-ci/archive/20250212/[email protected]/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 <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

sparse warnings: (new ones prefixed by >>)
>> arch/arm/mm/alignment.c:775:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __user *ptr @@     got unsigned int [usertype] *ip @@
   arch/arm/mm/alignment.c:775:25: sparse:     expected void const volatile [noderef] __user *ptr
   arch/arm/mm/alignment.c:775:25: sparse:     got unsigned int [usertype] *ip
>> arch/arm/mm/alignment.c:790:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __user *ptr @@     got unsigned short [usertype] *ip @@
   arch/arm/mm/alignment.c:790:25: sparse:     expected void const volatile [noderef] __user *ptr
   arch/arm/mm/alignment.c:790:25: sparse:     got unsigned short [usertype] *ip

vim +775 arch/arm/mm/alignment.c

c2860d43f5dfab George G. Davis   2009-06-04  768  
1bb9fb0a147f9d Russell King      2019-09-06  769  static int alignment_get_arm(struct pt_regs *regs, u32 *ip, u32 *inst)
67e15fa5b487ad Russell King      2019-08-31  770  {
67e15fa5b487ad Russell King      2019-08-31  771  	u32 instr = 0;
67e15fa5b487ad Russell King      2019-08-31  772  	int fault;
67e15fa5b487ad Russell King      2019-08-31  773  
67e15fa5b487ad Russell King      2019-08-31  774  	if (user_mode(regs))
67e15fa5b487ad Russell King      2019-08-31 @775  		fault = get_user(instr, ip);
67e15fa5b487ad Russell King      2019-08-31  776  	else
25f12ae45fc193 Christoph Hellwig 2020-06-17  777  		fault = get_kernel_nofault(instr, ip);
67e15fa5b487ad Russell King      2019-08-31  778  
67e15fa5b487ad Russell King      2019-08-31  779  	*inst = __mem_to_opcode_arm(instr);
67e15fa5b487ad Russell King      2019-08-31  780  
67e15fa5b487ad Russell King      2019-08-31  781  	return fault;
67e15fa5b487ad Russell King      2019-08-31  782  }
67e15fa5b487ad Russell King      2019-08-31  783  
67e15fa5b487ad Russell King      2019-08-31  784  static int alignment_get_thumb(struct pt_regs *regs, u16 *ip, u16 *inst)
67e15fa5b487ad Russell King      2019-08-31  785  {
67e15fa5b487ad Russell King      2019-08-31  786  	u16 instr = 0;
67e15fa5b487ad Russell King      2019-08-31  787  	int fault;
67e15fa5b487ad Russell King      2019-08-31  788  
67e15fa5b487ad Russell King      2019-08-31  789  	if (user_mode(regs))
67e15fa5b487ad Russell King      2019-08-31 @790  		fault = get_user(instr, ip);
67e15fa5b487ad Russell King      2019-08-31  791  	else
25f12ae45fc193 Christoph Hellwig 2020-06-17  792  		fault = get_kernel_nofault(instr, ip);
67e15fa5b487ad Russell King      2019-08-31  793  
67e15fa5b487ad Russell King      2019-08-31  794  	*inst = __mem_to_opcode_thumb16(instr);
67e15fa5b487ad Russell King      2019-08-31  795  
67e15fa5b487ad Russell King      2019-08-31  796  	return fault;
67e15fa5b487ad Russell King      2019-08-31  797  }
67e15fa5b487ad Russell King      2019-08-31  798  

:::::: The code at line 775 was first introduced by commit
:::::: 67e15fa5b487adb9b78a92789eeff2d6ec8f5cee ARM: mm: fix alignment handler faults under memory pressure

:::::: TO: Russell King <[email protected]>
:::::: CC: Russell King <[email protected]>

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