Messages in this thread | | | Date | Sat, 4 Jun 2022 15:43:13 +0800 | From | kernel test robot <> | Subject | arch/x86/kernel/cpu/sgx/virt.c:59:13: sparse: sparse: incorrect type in assignment (different base types) |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 032dcf09e2bf7c822be25b4abef7a6c913870d98 commit: 540745ddbc70eabdc7dbd3fcc00fe4fb17cd59ba x86/sgx: Introduce virtual EPC for use by KVM guests date: 1 year, 2 months ago config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20220604/202206041508.vR5NoxR4-lkp@intel.com/config) compiler: gcc-11 (Debian 11.3.0-1) 11.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-18-g56afb504-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=540745ddbc70eabdc7dbd3fcc00fe4fb17cd59ba git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 540745ddbc70eabdc7dbd3fcc00fe4fb17cd59ba # save the config file mkdir build_dir && cp config build_dir/.config make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/kernel/cpu/sgx/
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/x86/kernel/cpu/sgx/virt.c:59:13: sparse: sparse: incorrect type in assignment (different base types) @@ expected int [assigned] ret @@ got restricted vm_fault_t @@ arch/x86/kernel/cpu/sgx/virt.c:59:13: sparse: expected int [assigned] ret arch/x86/kernel/cpu/sgx/virt.c:59:13: sparse: got restricted vm_fault_t >> arch/x86/kernel/cpu/sgx/virt.c:60:20: sparse: sparse: restricted vm_fault_t degrades to integer arch/x86/kernel/cpu/sgx/virt.c:95:35: sparse: sparse: symbol 'sgx_vepc_vm_ops' was not declared. Should it be static?
vim +59 arch/x86/kernel/cpu/sgx/virt.c
32 33 static int __sgx_vepc_fault(struct sgx_vepc *vepc, 34 struct vm_area_struct *vma, unsigned long addr) 35 { 36 struct sgx_epc_page *epc_page; 37 unsigned long index, pfn; 38 int ret; 39 40 WARN_ON(!mutex_is_locked(&vepc->lock)); 41 42 /* Calculate index of EPC page in virtual EPC's page_array */ 43 index = vma->vm_pgoff + PFN_DOWN(addr - vma->vm_start); 44 45 epc_page = xa_load(&vepc->page_array, index); 46 if (epc_page) 47 return 0; 48 49 epc_page = sgx_alloc_epc_page(vepc, false); 50 if (IS_ERR(epc_page)) 51 return PTR_ERR(epc_page); 52 53 ret = xa_err(xa_store(&vepc->page_array, index, epc_page, GFP_KERNEL)); 54 if (ret) 55 goto err_free; 56 57 pfn = PFN_DOWN(sgx_get_epc_phys_addr(epc_page)); 58 > 59 ret = vmf_insert_pfn(vma, addr, pfn); > 60 if (ret != VM_FAULT_NOPAGE) { 61 ret = -EFAULT; 62 goto err_delete; 63 } 64 65 return 0; 66 67 err_delete: 68 xa_erase(&vepc->page_array, index); 69 err_free: 70 sgx_free_epc_page(epc_page); 71 return ret; 72 } 73
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