Hi Matthew, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 62f92d634458a1e308bb699986b9147a6d670457 commit: a2f11547052001bd448ccec81dd1e68409078fbb [11937/12481] kasan: rust: Add KASAN smoke test via UAF config: x86_64-randconfig-123-20240920 (https://download.01.org/0day-ci/archive/20240920/202409201822.CVGhLWKs-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-12) 11.3.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240920/202409201822.CVGhLWKs-lkp@xxxxxxxxx/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 <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202409201822.CVGhLWKs-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> mm/kasan/kasan_test_c.c:48:6: sparse: sparse: symbol 'kasan_ptr_result' was not declared. Should it be static? >> mm/kasan/kasan_test_c.c:49:5: sparse: sparse: symbol 'kasan_int_result' was not declared. Should it be static? vim +/kasan_ptr_result +48 mm/kasan/kasan_test_c.c 7ce0ea19d50e4e mm/kasan/kasan_test.c Andrey Konovalov 2022-09-27 43 adb72ae1915db2 lib/test_kasan.c Daniel Axtens 2020-06-03 44 /* 0fd379253691e7 lib/test_kasan.c Andrey Konovalov 2021-02-24 45 * Some tests use these global variables to store return values from function 0fd379253691e7 lib/test_kasan.c Andrey Konovalov 2021-02-24 46 * calls that could otherwise be eliminated by the compiler as dead code. adb72ae1915db2 lib/test_kasan.c Daniel Axtens 2020-06-03 47 */ adb72ae1915db2 lib/test_kasan.c Daniel Axtens 2020-06-03 @48 void *kasan_ptr_result; 83c4e7a0363bdb lib/test_kasan.c Patricia Alfonso 2020-10-13 @49 int kasan_int_result; 83c4e7a0363bdb lib/test_kasan.c Patricia Alfonso 2020-10-13 50 :::::: The code at line 48 was first introduced by commit :::::: adb72ae1915db28f934e9e02c18bfcea2f3ed3b7 kasan: stop tests being eliminated as dead code with FORTIFY_SOURCE :::::: TO: Daniel Axtens <dja@xxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
