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Subjectarch/x86/events/rapl.c:540:59: sparse: sparse: Using plain integer as NULL pointer
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-lkp@intel.com/config)
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/?id=0036fb00a756a2f6e360d44e2e3d2200a8afbc9b
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@intel.com>


sparse warnings: (new ones prefixed by >>)
>> arch/x86/events/rapl.c:540:59: sparse: sparse: Using plain integer as NULL pointer
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[] = {
> 540 [PERF_RAPL_PP0] = { 0, &rapl_events_cores_group, 0, false, 0 },
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

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