[kbuild-all] drivers/hv/hv_common.c:61:21: sparse: sparse: incorrect type in argument 1 (different address spaces)

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: d2f38a3c6507b2520101f9a3807ed98f1bdc545a commit: afca4d95dd7d7936d46a0ff02169cc40f534a6a3 Drivers: hv: Make portions of Hyper-V init code be arch neutral date: 4 months ago config: x86_64-randconfig-s022-20211027 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout afca4d95dd7d7936d46a0ff02169cc40f534a6a3 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/hv/hv_common.c:61:21: sparse: expected void [noderef] __percpu *__pdata drivers/hv/hv_common.c:61:21: sparse: got void [noderef] __percpu **[addressable] [toplevel] hyperv_pcpu_output_arg drivers/hv/hv_common.c:64:21: sparse: expected void [noderef] __percpu *__pdata drivers/hv/hv_common.c:64:21: sparse: got void [noderef] __percpu **[addressable] [toplevel] hyperv_pcpu_input_arg drivers/hv/hv_common.c:78:31: sparse: expected void [noderef] __percpu **[addressable] [assigned] [toplevel] hyperv_pcpu_input_arg drivers/hv/hv_common.c:78:31: sparse: got void *[noderef] __percpu * drivers/hv/hv_common.c:83:40: sparse: expected void [noderef] __percpu **[addressable] [assigned] [toplevel] hyperv_pcpu_output_arg drivers/hv/hv_common.c:83:40: sparse: got void *[noderef] __percpu * drivers/hv/hv_common.c:116:29: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got void [noderef] __percpu ** @@ drivers/hv/hv_common.c:116:29: sparse: expected void const [noderef] __percpu *__vpp_verify drivers/hv/hv_common.c:116:29: sparse: got void [noderef] __percpu ** drivers/hv/hv_common.c:122:38: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got void [noderef] __percpu ** @@ drivers/hv/hv_common.c:122:38: sparse: expected void const [noderef] __percpu *__vpp_verify drivers/hv/hv_common.c:122:38: sparse: got void [noderef] __percpu ** drivers/hv/hv_common.c:144:29: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got void [noderef] __percpu ** @@ drivers/hv/hv_common.c:144:29: sparse: expected void const [noderef] __percpu *__vpp_verify drivers/hv/hv_common.c:144:29: sparse: got void [noderef] __percpu ** drivers/hv/hv_common.c:149:38: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got void [noderef] __percpu ** @@ drivers/hv/hv_common.c:149:38: sparse: expected void const [noderef] __percpu *__vpp_verify drivers/hv/hv_common.c:149:38: sparse: got void [noderef] __percpu ** vim +61 drivers/hv/hv_common.c 49 50 /* 51 * Hyper-V specific initialization and shutdown code that is 52 * common across all architectures. Called from architecture 53 * specific initialization functions. 54 */ 55 56 void __init hv_common_free(void) 57 { 58 kfree(hv_vp_index); 59 hv_vp_index = NULL; 60 62 hyperv_pcpu_output_arg = NULL; 63 65 hyperv_pcpu_input_arg = NULL; 66 } 67 68 int __init hv_common_init(void) 69 { 70 int i; 71 72 /* 73 * Allocate the per-CPU state for the hypercall input arg. 74 * If this allocation fails, we will not be able to setup 75 * (per-CPU) hypercall input page and thus this failure is 76 * fatal on Hyper-V. 77 */ 79 BUG_ON(!hyperv_pcpu_input_arg); 80 81 /* Allocate the per-CPU state for output arg for root */ 82 if (hv_root_partition) { 84 BUG_ON(!hyperv_pcpu_output_arg); 85 } 86 87 hv_vp_index = kmalloc_array(num_possible_cpus(), sizeof(*hv_vp_index), 88 GFP_KERNEL); 89 if (!hv_vp_index) { 90 hv_common_free(); 91 return -ENOMEM; 92 } 93 94 for (i = 0; i < num_possible_cpus(); i++) 95 hv_vp_index[i] = VP_INVAL; 96 97 return 0; 98 } 99 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org