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charset=us-ascii Content-Disposition: inline Hi Steven, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 715ca9dd687f89ddaac8ec8ccb3b5e5a30311a99 commit: 59cbd4eea48fdbc68fc17a29ad71188fea74b28b KVM: Remove HIGH_RES_TIMERS dependency date: 6 weeks ago config: x86_64-randconfig-123-20241020 (https://download.01.org/0day-ci/archive/20241020/202410201716.n8f4T911-lkp@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241020/202410201716.n8f4T911-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202410201716.n8f4T911-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:354:36: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/cpu/sgx/virt.c:385:24: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/cpu/sgx/virt.c:385:43: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/cpu/sgx/virt.c:385:58: sparse: sparse: cast removes address space '__user' of expression arch/x86/kernel/cpu/sgx/virt.c: note: in included file (through include/linux/miscdevice.h): include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true vim +59 arch/x86/kernel/cpu/sgx/virt.c 540745ddbc70ea Sean Christopherson 2021-03-19 32 540745ddbc70ea Sean Christopherson 2021-03-19 33 static int __sgx_vepc_fault(struct sgx_vepc *vepc, 540745ddbc70ea Sean Christopherson 2021-03-19 34 struct vm_area_struct *vma, unsigned long addr) 540745ddbc70ea Sean Christopherson 2021-03-19 35 { 540745ddbc70ea Sean Christopherson 2021-03-19 36 struct sgx_epc_page *epc_page; 540745ddbc70ea Sean Christopherson 2021-03-19 37 unsigned long index, pfn; 540745ddbc70ea Sean Christopherson 2021-03-19 38 int ret; 540745ddbc70ea Sean Christopherson 2021-03-19 39 540745ddbc70ea Sean Christopherson 2021-03-19 40 WARN_ON(!mutex_is_locked(&vepc->lock)); 540745ddbc70ea Sean Christopherson 2021-03-19 41 540745ddbc70ea Sean Christopherson 2021-03-19 42 /* Calculate index of EPC page in virtual EPC's page_array */ 540745ddbc70ea Sean Christopherson 2021-03-19 43 index = vma->vm_pgoff + PFN_DOWN(addr - vma->vm_start); 540745ddbc70ea Sean Christopherson 2021-03-19 44 540745ddbc70ea Sean Christopherson 2021-03-19 45 epc_page = xa_load(&vepc->page_array, index); 540745ddbc70ea Sean Christopherson 2021-03-19 46 if (epc_page) 540745ddbc70ea Sean Christopherson 2021-03-19 47 return 0; 540745ddbc70ea Sean Christopherson 2021-03-19 48 540745ddbc70ea Sean Christopherson 2021-03-19 49 epc_page = sgx_alloc_epc_page(vepc, false); 540745ddbc70ea Sean Christopherson 2021-03-19 50 if (IS_ERR(epc_page)) 540745ddbc70ea Sean Christopherson 2021-03-19 51 return PTR_ERR(epc_page); 540745ddbc70ea Sean Christopherson 2021-03-19 52 540745ddbc70ea Sean Christopherson 2021-03-19 53 ret = xa_err(xa_store(&vepc->page_array, index, epc_page, GFP_KERNEL)); 540745ddbc70ea Sean Christopherson 2021-03-19 54 if (ret) 540745ddbc70ea Sean Christopherson 2021-03-19 55 goto err_free; 540745ddbc70ea Sean Christopherson 2021-03-19 56 540745ddbc70ea Sean Christopherson 2021-03-19 57 pfn = PFN_DOWN(sgx_get_epc_phys_addr(epc_page)); 540745ddbc70ea Sean Christopherson 2021-03-19 58 540745ddbc70ea Sean Christopherson 2021-03-19 @59 ret = vmf_insert_pfn(vma, addr, pfn); 540745ddbc70ea Sean Christopherson 2021-03-19 @60 if (ret != VM_FAULT_NOPAGE) { 540745ddbc70ea Sean Christopherson 2021-03-19 61 ret = -EFAULT; 540745ddbc70ea Sean Christopherson 2021-03-19 62 goto err_delete; 540745ddbc70ea Sean Christopherson 2021-03-19 63 } 540745ddbc70ea Sean Christopherson 2021-03-19 64 540745ddbc70ea Sean Christopherson 2021-03-19 65 return 0; 540745ddbc70ea Sean Christopherson 2021-03-19 66 540745ddbc70ea Sean Christopherson 2021-03-19 67 err_delete: 540745ddbc70ea Sean Christopherson 2021-03-19 68 xa_erase(&vepc->page_array, index); 540745ddbc70ea Sean Christopherson 2021-03-19 69 err_free: 540745ddbc70ea Sean Christopherson 2021-03-19 70 sgx_free_epc_page(epc_page); 540745ddbc70ea Sean Christopherson 2021-03-19 71 return ret; 540745ddbc70ea Sean Christopherson 2021-03-19 72 } 540745ddbc70ea Sean Christopherson 2021-03-19 73 :::::: The code at line 59 was first introduced by commit :::::: 540745ddbc70eabdc7dbd3fcc00fe4fb17cd59ba x86/sgx: Introduce virtual EPC for use by KVM guests :::::: TO: Sean Christopherson :::::: CC: Borislav Petkov -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki