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Message-ID: <202311300328.yckncyn0-lkp@intel.com>
Date:   Thu, 30 Nov 2023 07:08:03 +0800
From:   kernel test robot <lkp@...el.com>
To:     Youling Tang <tangyouling@...ngson.cn>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Huacai Chen <chenhuacai@...nel.org>,
        Xi Ruoyao <xry111@...111.site>
Subject: arch/loongarch/kernel/relocate.c:166:38: sparse: sparse: incorrect
 type in initializer (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   3b47bc037bd44f142ac09848e8d3ecccc726be99
commit: e5f02b51fa0cb785e352e77271a65e96051b789b LoongArch: Add support for kernel address space layout randomization (KASLR)
date:   9 months ago
config: loongarch-randconfig-r034-20230511 (https://download.01.org/0day-ci/archive/20231130/202311300328.yckncyn0-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20231130/202311300328.yckncyn0-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311300328.yckncyn0-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> arch/loongarch/kernel/relocate.c:166:38: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected char *cmdline @@     got void [noderef] __iomem * @@
   arch/loongarch/kernel/relocate.c:166:38: sparse:     expected char *cmdline
   arch/loongarch/kernel/relocate.c:166:38: sparse:     got void [noderef] __iomem *

vim +166 arch/loongarch/kernel/relocate.c

   159	
   160	void * __init relocate_kernel(void)
   161	{
   162		unsigned long kernel_length;
   163		unsigned long random_offset = 0;
   164		void *location_new = _text; /* Default to original kernel start */
   165		void *kernel_entry = start_kernel; /* Default to original kernel entry point */
 > 166		char *cmdline = early_ioremap(fw_arg1, COMMAND_LINE_SIZE); /* Boot command line is passed in fw_arg1 */
   167	
   168		strscpy(boot_command_line, cmdline, COMMAND_LINE_SIZE);
   169	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

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