tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: dd81e1c7d5fb126e5fbc5c9e334d7b3ec29a16a0 commit: 0036fb00a756a2f6e360d44e2e3d2200a8afbc9b perf/x86/rapl: fix AMD event handling date: 7 days ago config: i386-randconfig-s001-20220124 (https://download.01.org/0day-ci/archive/20220125/202201251514.ZEiF0Q7N-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 0036fb00a756a2f6e360d44e2e3d2200a8afbc9b # save the config file to linux build tree mkdir build_dir make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash arch/x86/events/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) arch/x86/events/rapl.c:542:59: sparse: sparse: Using plain integer as NULL pointer arch/x86/events/rapl.c:543:59: sparse: sparse: Using plain integer as NULL pointer arch/x86/events/rapl.c:544:59: sparse: sparse: Using plain integer as NULL pointer vim +540 arch/x86/events/rapl.c 533 534 /* 535 * Force to PERF_RAPL_MAX size due to: 536 * - perf_msr_probe(PERF_RAPL_MAX) 537 * - want to use same event codes across both architectures 538 */ 539 static struct perf_msr amd_rapl_msrs[] = { 541 [PERF_RAPL_PKG] = { MSR_AMD_PKG_ENERGY_STATUS, &rapl_events_pkg_group, test_msr, false, RAPL_MSR_MASK }, 542 [PERF_RAPL_RAM] = { 0, &rapl_events_ram_group, 0, false, 0 }, 543 [PERF_RAPL_PP1] = { 0, &rapl_events_gpu_group, 0, false, 0 }, 544 [PERF_RAPL_PSYS] = { 0, &rapl_events_psys_group, 0, false, 0 }, 545 }; 546 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org