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Sun, 23 Aug 2026 12:31:56 +0000 Date: Sun, 23 Aug 2026 20:31:49 +0800 From: kernel test robot To: CC: Subject: [jimc:scratchpad-v10 6/24] include/linux/scratchpad.h:168:14: sparse: sparse: unsigned value that used to be signed checked against zero? 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(https://download.01.org/0day-ci/archive/20260822/202608221913.XLktNQpq-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/r/202608221913.XLktNQpq-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) kernel/bpf/verifier.c:1746:1: sparse: sparse: symbol 'bpf_state_pool_key' was not declared. Should it be static? kernel/bpf/verifier.c: note: in included file (through include/linux/bpf_verifier.h): >> include/linux/scratchpad.h:168:14: sparse: sparse: unsigned value that used to be signed checked against zero? kernel/bpf/verifier.c:1709:55: sparse: signed value source vim +168 include/linux/scratchpad.h 97f7757fd65ebc Jim Cromie 2026-08-19 153 97f7757fd65ebc Jim Cromie 2026-08-19 154 DEFINE_FREE(scratchpad, struct scratchpad *, 97f7757fd65ebc Jim Cromie 2026-08-19 155 if (!IS_ERR_OR_NULL(_T)) scratchpad_free(_T)) 97f7757fd65ebc Jim Cromie 2026-08-19 156 97f7757fd65ebc Jim Cromie 2026-08-19 157 /** 97f7757fd65ebc Jim Cromie 2026-08-19 158 * is_scratch_ptr - Check whether an address resides in a compound scratchpad/scratchrec 97f7757fd65ebc Jim Cromie 2026-08-19 159 * @ptr: Object pointer to test 97f7757fd65ebc Jim Cromie 2026-08-19 160 */ 97f7757fd65ebc Jim Cromie 2026-08-19 161 static inline bool is_scratch_ptr(const void *ptr) 97f7757fd65ebc Jim Cromie 2026-08-19 162 { 97f7757fd65ebc Jim Cromie 2026-08-19 163 struct folio *folio; 97f7757fd65ebc Jim Cromie 2026-08-19 164 97f7757fd65ebc Jim Cromie 2026-08-19 165 if (ZERO_OR_NULL_PTR(ptr) || is_vmalloc_addr(ptr)) 97f7757fd65ebc Jim Cromie 2026-08-19 166 return false; 97f7757fd65ebc Jim Cromie 2026-08-19 167 97f7757fd65ebc Jim Cromie 2026-08-19 @168 if (!virt_addr_valid(ptr)) 97f7757fd65ebc Jim Cromie 2026-08-19 169 return false; 97f7757fd65ebc Jim Cromie 2026-08-19 170 97f7757fd65ebc Jim Cromie 2026-08-19 171 folio = virt_to_folio(ptr); 97f7757fd65ebc Jim Cromie 2026-08-19 172 return !folio_test_slab(folio); 97f7757fd65ebc Jim Cromie 2026-08-19 173 } 97f7757fd65ebc Jim Cromie 2026-08-19 174 :::::: The code at line 168 was first introduced by commit :::::: 97f7757fd65ebcb2ae4d50d3ca03a8c9cea8e51f scratchpad: add Direct-Map Large Scratchpad and Scratchrec bump allocators :::::: TO: Jim Cromie :::::: CC: Jim Cromie -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki