Messages in this thread | | | Date | Sat, 4 Dec 2021 14:04:00 +0800 | From | kernel test robot <> | Subject | include/asm-generic/tlb.h:530:42: sparse: sparse: cast truncates bits from constant value (200000000 becomes 0) |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 12119cfa1052d512a92524e90ebee85029a918f8 commit: a4a118f2eead1d6c49e00765de89878288d4b890 hugetlbfs: flush TLBs correctly after huge_pmd_unshare date: 11 days ago config: sparc-allmodconfig (https://download.01.org/0day-ci/archive/20211204/202112041445.jjD0iW7P-lkp@intel.com/config) compiler: sparc64-linux-gcc (GCC) 11.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a4a118f2eead1d6c49e00765de89878288d4b890 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout a4a118f2eead1d6c49e00765de89878288d4b890 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=sparc SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
sparse warnings: (new ones prefixed by >>) mm/hugetlb.c:454:12: sparse: sparse: context imbalance in 'allocate_file_region_entries' - wrong count at exit mm/hugetlb.c:527:13: sparse: sparse: context imbalance in 'region_add' - wrong count at exit mm/hugetlb.c:594:13: sparse: sparse: context imbalance in 'region_chg' - wrong count at exit mm/hugetlb.c: note: in included file: include/linux/mm.h:1386:17: sparse: sparse: context imbalance in 'demote_free_huge_page' - unexpected unlock mm/hugetlb.c:4877:20: sparse: sparse: context imbalance in 'move_huge_pte' - different lock contexts for basic block mm/hugetlb.c: note: in included file (through arch/sparc/include/asm/tlb_64.h, arch/sparc/include/asm/tlb.h): >> include/asm-generic/tlb.h:530:42: sparse: sparse: cast truncates bits from constant value (200000000 becomes 0) mm/hugetlb.c: note: in included file: include/linux/mm.h:1199:22: sparse: sparse: context imbalance in 'hugetlb_cow' - unexpected unlock mm/hugetlb.c:6006:25: sparse: sparse: context imbalance in 'follow_hugetlb_page' - different lock contexts for basic block
vim +530 include/asm-generic/tlb.h
2631ed00b04988 Peter Zijlstra (Intel 2020-06-25 526) 2631ed00b04988 Peter Zijlstra (Intel 2020-06-25 527) static inline void tlb_flush_pmd_range(struct mmu_gather *tlb, 2631ed00b04988 Peter Zijlstra (Intel 2020-06-25 528) unsigned long address, unsigned long size) 2631ed00b04988 Peter Zijlstra (Intel 2020-06-25 529) { 2631ed00b04988 Peter Zijlstra (Intel 2020-06-25 @530) __tlb_adjust_range(tlb, address, size); 2631ed00b04988 Peter Zijlstra (Intel 2020-06-25 531) tlb->cleared_pmds = 1; 2631ed00b04988 Peter Zijlstra (Intel 2020-06-25 532) } 2631ed00b04988 Peter Zijlstra (Intel 2020-06-25 533)
:::::: The code at line 530 was first introduced by commit :::::: 2631ed00b0498810f8d5c2163c6b5270d893687b tlb: mmu_gather: add tlb_flush_*_range APIs
:::::: TO: Peter Zijlstra (Intel) <peterz@infradead.org> :::::: CC: Catalin Marinas <catalin.marinas@arm.com>
--- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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