[linux-next:master 5126/7282] arch/arm/kernel/crash_dump.c:33:17: sparse: sparse: incorrect type in argument 1 (different address spaces)

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   c4185b16aba73929aa76f0d030efbe79ae867808
commit: d803336abdbc1bfacdb32b2cf9f4fdbee072b8ee [5126/7282] ARM: mm: kill unused runtime hook arch_iounmap()
config: arm-randconfig-s032-20220703 (https://download.01.org/0day-ci/archive/20220704/202207040912.XbvaBqpS-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=d803336abdbc1bfacdb32b2cf9f4fdbee072b8ee
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout d803336abdbc1bfacdb32b2cf9f4fdbee072b8ee
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm SHELL=/bin/bash arch/arm/kernel/ drivers/misc/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)
   arch/arm/kernel/crash_dump.c:27:15: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void *vaddr @@     got void [noderef] __iomem * @@
   arch/arm/kernel/crash_dump.c:27:15: sparse:     expected void *vaddr
   arch/arm/kernel/crash_dump.c:27:15: sparse:     got void [noderef] __iomem *
>> arch/arm/kernel/crash_dump.c:33:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void volatile [noderef] __iomem *io_addr @@     got void *vaddr @@
   arch/arm/kernel/crash_dump.c:33:17: sparse:     expected void volatile [noderef] __iomem *io_addr
   arch/arm/kernel/crash_dump.c:33:17: sparse:     got void *vaddr

vim +33 arch/arm/kernel/crash_dump.c

67742c8168ed66 Mika Westerberg         2010-05-10  18  
5d8de293c22489 Matthew Wilcox (Oracle  2022-04-29  19) ssize_t copy_oldmem_page(struct iov_iter *iter, unsigned long pfn,
5d8de293c22489 Matthew Wilcox (Oracle  2022-04-29  20) 			 size_t csize, unsigned long offset)
67742c8168ed66 Mika Westerberg         2010-05-10  21  {
67742c8168ed66 Mika Westerberg         2010-05-10  22  	void *vaddr;
67742c8168ed66 Mika Westerberg         2010-05-10  23  
67742c8168ed66 Mika Westerberg         2010-05-10  24  	if (!csize)
67742c8168ed66 Mika Westerberg         2010-05-10  25  		return 0;
67742c8168ed66 Mika Westerberg         2010-05-10  26  
8fad87bca7ac97 Liu Hua                 2014-03-27  27  	vaddr = ioremap(__pfn_to_phys(pfn), PAGE_SIZE);
67742c8168ed66 Mika Westerberg         2010-05-10  28  	if (!vaddr)
67742c8168ed66 Mika Westerberg         2010-05-10  29  		return -ENOMEM;
67742c8168ed66 Mika Westerberg         2010-05-10  30  
5d8de293c22489 Matthew Wilcox (Oracle  2022-04-29  31) 	csize = copy_to_iter(vaddr + offset, csize, iter);
67742c8168ed66 Mika Westerberg         2010-05-10  32  
67742c8168ed66 Mika Westerberg         2010-05-10 @33  	iounmap(vaddr);

:::::: The code at line 33 was first introduced by commit
:::::: 67742c8168ed66fdd6cb5dc90e06c43cdc5bba07 ARM: 6120/1: kdump: implement copy_oldmem_page()

:::::: TO: Mika Westerberg <mika.westerberg@iki.fi>
:::::: CC: Russell King <rmk+kernel@arm.linux.org.uk>

-- 
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