linux-kernel - arch/x86/kernel/cpu/debugfs.c:11:33: sparse: sparse: incorrect type in initializer (different address spaces)

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Date: Tue, 9 Jan 2024 16:05:49 +0800
From: kernel test robot <lkp@...el.com>
To: Thomas Gleixner <tglx@...utronix.de>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: arch/x86/kernel/cpu/debugfs.c:11:33: sparse: sparse: incorrect type
 in initializer (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   9f8413c4a66f2fb776d3dc3c9ed20bf435eb305e
commit: 48525fd1ea1cfa059a580e77b10ea8790914efa2 x86/cpu: Provide debug interface
date:   3 months ago
config: x86_64-randconfig-123-20240106 (https://download.01.org/0day-ci/archive/20240109/202401091504.PDAmleJY-lkp@intel.com/config)
compiler: ClangBuiltLinux clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240109/202401091504.PDAmleJY-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/202401091504.PDAmleJY-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> arch/x86/kernel/cpu/debugfs.c:11:33: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got struct cpuinfo_x86 * @@
   arch/x86/kernel/cpu/debugfs.c:11:33: sparse:     expected void const [noderef] __percpu *__vpp_verify
   arch/x86/kernel/cpu/debugfs.c:11:33: sparse:     got struct cpuinfo_x86 *

vim +11 arch/x86/kernel/cpu/debugfs.c

     7	
     8	static int cpu_debug_show(struct seq_file *m, void *p)
     9	{
    10		unsigned long cpu = (unsigned long)m->private;
  > 11		struct cpuinfo_x86 *c = per_cpu_ptr(&cpu_info, cpu);
    12	
    13		seq_printf(m, "online:              %d\n", cpu_online(cpu));
    14		if (!c->initialized)
    15			return 0;
    16	
    17		seq_printf(m, "initial_apicid:      %x\n", c->topo.initial_apicid);
    18		seq_printf(m, "apicid:              %x\n", c->topo.apicid);
    19		seq_printf(m, "pkg_id:              %u\n", c->topo.pkg_id);
    20		seq_printf(m, "die_id:              %u\n", c->topo.die_id);
    21		seq_printf(m, "cu_id:               %u\n", c->topo.cu_id);
    22		seq_printf(m, "core_id:             %u\n", c->topo.core_id);
    23		seq_printf(m, "logical_pkg_id:      %u\n", c->topo.logical_pkg_id);
    24		seq_printf(m, "logical_die_id:      %u\n", c->topo.logical_die_id);
    25		seq_printf(m, "llc_id:              %u\n", c->topo.llc_id);
    26		seq_printf(m, "l2c_id:              %u\n", c->topo.l2c_id);
    27		seq_printf(m, "max_cores:           %u\n", c->x86_max_cores);
    28		seq_printf(m, "max_die_per_pkg:     %u\n", __max_die_per_package);
    29		seq_printf(m, "smp_num_siblings:    %u\n", smp_num_siblings);
    30		return 0;
    31	}
    32	

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