CC: kbuild-...@lists.01.org BCC: l...@intel.com CC: Mike Rapoport <r...@kernel.org> CC: linux-ker...@vger.kernel.org TO: "Yu-cheng Yu" <yu-cheng...@intel.com> CC: Mike Rapoport <r...@kernel.org> CC: "Kirill A. Shutemov" <kirill.shute...@linux.intel.com> CC: Rick Edgecombe <rick.p.edgeco...@intel.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/rppt/linux.git cet/kvm head: 6c13d37e6c4ff3a7f86c5490b3d0f4f12d0a40da commit: c4cd555bfd9f80a5d2cdc9993d05f3b5bcb8ccae [16/51] x86/mm: Update maybe_mkwrite() for shadow stack :::::: branch date: 24 hours ago :::::: commit date: 4 months ago config: i386-randconfig-m021 (https://download.01.org/0day-ci/archive/20220527/202205271831.tb2kh9zs-...@intel.com/config) compiler: gcc-11 (Debian 11.3.0-1) 11.3.0 If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <l...@intel.com> Reported-by: Dan Carpenter <dan.carpen...@oracle.com> New smatch warnings: arch/x86/mm/pgtable.c:617 maybe_mkwrite() warn: bitwise AND condition is false here arch/x86/mm/pgtable.c:627 maybe_pmd_mkwrite() warn: bitwise AND condition is false here Old smatch warnings: arch/x86/mm/pgtable.c:281 pgd_mop_up_pmds() warn: we never enter this loop vim +617 arch/x86/mm/pgtable.c db3eb96f4e6281 Andrea Arcangeli 2011-01-13 612 c4cd555bfd9f80 Yu-cheng Yu 2022-01-30 613 pte_t maybe_mkwrite(pte_t pte, struct vm_area_struct *vma) c4cd555bfd9f80 Yu-cheng Yu 2022-01-30 614 { c4cd555bfd9f80 Yu-cheng Yu 2022-01-30 615 if (vma->vm_flags & VM_WRITE) c4cd555bfd9f80 Yu-cheng Yu 2022-01-30 616 pte = pte_mkwrite(pte); c4cd555bfd9f80 Yu-cheng Yu 2022-01-30 @617 else if (vma->vm_flags & VM_SHADOW_STACK) c4cd555bfd9f80 Yu-cheng Yu 2022-01-30 618 pte = pte_mkwrite_shstk(pte); c4cd555bfd9f80 Yu-cheng Yu 2022-01-30 619 return pte; c4cd555bfd9f80 Yu-cheng Yu 2022-01-30 620 } c4cd555bfd9f80 Yu-cheng Yu 2022-01-30 621 c4cd555bfd9f80 Yu-cheng Yu 2022-01-30 622 #ifdef CONFIG_TRANSPARENT_HUGEPAGE c4cd555bfd9f80 Yu-cheng Yu 2022-01-30 623 pmd_t maybe_pmd_mkwrite(pmd_t pmd, struct vm_area_struct *vma) c4cd555bfd9f80 Yu-cheng Yu 2022-01-30 624 { c4cd555bfd9f80 Yu-cheng Yu 2022-01-30 625 if (vma->vm_flags & VM_WRITE) c4cd555bfd9f80 Yu-cheng Yu 2022-01-30 626 pmd = pmd_mkwrite(pmd); c4cd555bfd9f80 Yu-cheng Yu 2022-01-30 @627 else if (vma->vm_flags & VM_SHADOW_STACK) c4cd555bfd9f80 Yu-cheng Yu 2022-01-30 628 pmd = pmd_mkwrite_shstk(pmd); c4cd555bfd9f80 Yu-cheng Yu 2022-01-30 629 return pmd; c4cd555bfd9f80 Yu-cheng Yu 2022-01-30 630 } c4cd555bfd9f80 Yu-cheng Yu 2022-01-30 631 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ c4cd555bfd9f80 Yu-cheng Yu 2022-01-30 632 -- 0-DAY CI Kernel Test Service https://01.org/lkp _______________________________________________ kbuild mailing list -- kbuild@lists.01.org To unsubscribe send an email to kbuild-le...@lists.01.org
