Hi Emerson, kernel test robot noticed the following build warnings:
[auto build test WARNING on char-misc/char-misc-testing] [also build test WARNING on char-misc/char-misc-next char-misc/char-misc-linus linus/master v7.3-rc6 next-20261008] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Emerson-Busson/hv-vmbus-convert-ring-backing-through-the-chunk-allocator/20261007-160739 base: char-misc/char-misc-testing patch link: https://lore.kernel.org/r/20261007190752.336426-11-emersonbusson%40gmail.com patch subject: [PATCH v2 10/14] hv: vmbus: pin buffer pages across UIO mmap to close the reclaim race config: i386-randconfig-1001-20261008 (https://download.01.org/0day-ci/archive/20261009/[email protected]/config) compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261009/[email protected]/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 <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All warnings (new ones prefixed by >>): In file included from drivers/uio/uio_hv_generic.c:428: >> drivers/uio/uio_hv_generic_mmap_test.c:36:34: warning: implicit conversion >> from 'u64' (aka 'unsigned long long') to 'unsigned long' changes value from >> 18446744073709551615 to 4294967295 [-Wconstant-conversion] 36 | hv_uio_mmap_range_valid(8, U64_MAX, 1)); | ~~~~~~~~~~~~~~~~~~~~~~~ ^~~~~~~ include/linux/limits.h:25:19: note: expanded from macro 'U64_MAX' 25 | #define U64_MAX ((u64)~0ULL) | ^~~~~~~~~~ include/kunit/test.h:1014:31: note: expanded from macro 'KUNIT_EXPECT_FALSE' 1014 | KUNIT_EXPECT_FALSE_MSG(test, condition, NULL) | ^~~~~~~~~ include/kunit/test.h:1019:7: note: expanded from macro 'KUNIT_EXPECT_FALSE_MSG' 1019 | condition, \ | ^~~~~~~~~ include/kunit/test.h:812:10: note: expanded from macro 'KUNIT_FALSE_MSG_ASSERTION' 812 | condition, \ | ^~~~~~~~~ include/kunit/test.h:788:16: note: expanded from macro 'KUNIT_UNARY_ASSERTION' 788 | if (likely(!!(condition_) == !!expected_true_)) \ | ^~~~~~~~~~ include/linux/compiler.h:76:40: note: expanded from macro 'likely' 76 | # define likely(x) __builtin_expect(!!(x), 1) | ^ 1 warning generated. vim +36 drivers/uio/uio_hv_generic_mmap_test.c 27 28 static void hv_uio_ring_mmap_range_test(struct kunit *test) 29 { 30 KUNIT_EXPECT_TRUE(test, hv_uio_mmap_range_valid(8, 0, 8)); 31 KUNIT_EXPECT_TRUE(test, hv_uio_mmap_range_valid(8, 4, 4)); 32 KUNIT_EXPECT_FALSE(test, hv_uio_mmap_range_valid(8, 8, 1)); 33 KUNIT_EXPECT_FALSE(test, hv_uio_mmap_range_valid(8, 7, 2)); 34 KUNIT_EXPECT_FALSE(test, hv_uio_mmap_range_valid(8, 0, 0)); 35 KUNIT_EXPECT_FALSE(test, > 36 hv_uio_mmap_range_valid(8, U64_MAX, 1)); 37 } 38 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
