tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 32ce2abb03cfae17a9eb42bd6b1b619b72f23f20 commit: 445ecdf79be0c71ca248f7611aeefceaea3ec59f [11041/12034] kvm: x86: Exclude unpermitted xfeatures at KVM_GET_SUPPORTED_CPUID config: x86_64-rhel-8.3-kselftests (https://download.01.org/0day-ci/archive/20220112/202201122237.8fnwBZxc-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/next/linux-next.git/commi... git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 445ecdf79be0c71ca248f7611aeefceaea3ec59f # 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=x86_64 SHELL=/bin/bash arch/x86/kvm/ 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/kvm/cpuid.c: note: in included file (through arch/x86/include/asm/pgtable.h, include/linux/pgtable.h, include/linux/mm.h, ...): vim +135 arch/x86/include/asm/fpu/api.h a0ff0611c2fbde Thomas Gleixner 2021-10-15 134 980fe2fddcff21 Thomas Gleixner 2022-01-05 @135 extern inline u64 xstate_get_guest_group_perm(void); 980fe2fddcff21 Thomas Gleixner 2022-01-05 136 :::::: The code at line 135 was first introduced by commit :::::: 980fe2fddcff21937c93532b4597c8ea450346c1 x86/fpu: Extend fpu_xstate_prctl() with guest permissions :::::: TO: Thomas Gleixner <tglx(a)linutronix.de&gt; :::::: CC: Paolo Bonzini <pbonzini(a)redhat.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org