Hi Maxim, url: https://github.com/0day-ci/linux/commits/Maxim-Levitsky/Few-nSVM-bugfixes/20200828-003025 base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next config: x86_64-randconfig-m001-20200827 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> smatch warnings: arch/x86/kvm/svm/svm.c:3915 svm_pre_leave_smm() warn: should this be a bitwise op? # https://github.com/0day-ci/linux/commit/e2317f8eb1f0e9f731ddbe66ab175be19f3bdaf1 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Maxim-Levitsky/Few-nSVM-bugfixes/20200828-003025 git checkout e2317f8eb1f0e9f731ddbe66ab175be19f3bdaf1 vim +3915 arch/x86/kvm/svm/svm.c ed19321fb657121 arch/x86/kvm/svm.c Sean Christopherson 2019-04-02 3900 static int svm_pre_leave_smm(struct kvm_vcpu *vcpu, const char *smstate) 0234bf885236a41 arch/x86/kvm/svm.c Ladi Prosek 2017-10-11 3901 { 05cade71cf3b925 arch/x86/kvm/svm.c Ladi Prosek 2017-10-11 3902 struct vcpu_svm *svm = to_svm(vcpu); 8c5fbf1a7231078 arch/x86/kvm/svm.c KarimAllah Ahmed 2019-01-31 3903 struct kvm_host_map map; 59cd9bc5b03f0ba arch/x86/kvm/svm/svm.c Vitaly Kuznetsov 2020-07-10 3904 int ret = 0; 05cade71cf3b925 arch/x86/kvm/svm.c Ladi Prosek 2017-10-11 3905 e2317f8eb1f0e9f arch/x86/kvm/svm/svm.c Maxim Levitsky 2020-08-27 3906 if (guest_cpuid_has(vcpu, X86_FEATURE_LM)) { e2317f8eb1f0e9f arch/x86/kvm/svm/svm.c Maxim Levitsky 2020-08-27 3907 u64 saved_efer = GET_SMSTATE(u64, smstate, 0x7ed0); e2317f8eb1f0e9f arch/x86/kvm/svm/svm.c Maxim Levitsky 2020-08-27 3908 u64 guest = GET_SMSTATE(u64, smstate, 0x7ed8); e2317f8eb1f0e9f arch/x86/kvm/svm/svm.c Maxim Levitsky 2020-08-27 3909 u64 vmcb = GET_SMSTATE(u64, smstate, 0x7ee0); 05cade71cf3b925 arch/x86/kvm/svm.c Ladi Prosek 2017-10-11 3910 ed19321fb657121 arch/x86/kvm/svm.c Sean Christopherson 2019-04-02 3911 if (guest) { e2317f8eb1f0e9f arch/x86/kvm/svm/svm.c Maxim Levitsky 2020-08-27 3912 if (!guest_cpuid_has(vcpu, X86_FEATURE_SVM)) 9ec19493fb86d6d arch/x86/kvm/svm.c Sean Christopherson 2019-04-02 3913 return 1; e2317f8eb1f0e9f arch/x86/kvm/svm/svm.c Maxim Levitsky 2020-08-27 3914 e2317f8eb1f0e9f arch/x86/kvm/svm/svm.c Maxim Levitsky 2020-08-27 @3915 if (!(saved_efer && EFER_SVME)) ^^ It looks like bitwise AND was intended. e2317f8eb1f0e9f arch/x86/kvm/svm/svm.c Maxim Levitsky 2020-08-27 3916 return 1; e2317f8eb1f0e9f arch/x86/kvm/svm/svm.c Maxim Levitsky 2020-08-27 3917 e2317f8eb1f0e9f arch/x86/kvm/svm/svm.c Maxim Levitsky 2020-08-27 3918 if (kvm_vcpu_map(&svm->vcpu, e2317f8eb1f0e9f arch/x86/kvm/svm/svm.c Maxim Levitsky 2020-08-27 3919 gpa_to_gfn(vmcb), &map) == -EINVAL) e2317f8eb1f0e9f arch/x86/kvm/svm/svm.c Maxim Levitsky 2020-08-27 3920 return 1; e2317f8eb1f0e9f arch/x86/kvm/svm/svm.c Maxim Levitsky 2020-08-27 3921 e2317f8eb1f0e9f arch/x86/kvm/svm/svm.c Maxim Levitsky 2020-08-27 3922 ret = enter_svm_guest_mode(svm, vmcb, map.hva); 69c9dfa24bb7bac arch/x86/kvm/svm/svm.c Paolo Bonzini 2020-05-13 3923 kvm_vcpu_unmap(&svm->vcpu, &map, true); 05cade71cf3b925 arch/x86/kvm/svm.c Ladi Prosek 2017-10-11 3924 } e2317f8eb1f0e9f arch/x86/kvm/svm/svm.c Maxim Levitsky 2020-08-27 3925 } 59cd9bc5b03f0ba arch/x86/kvm/svm/svm.c Vitaly Kuznetsov 2020-07-10 3926 59cd9bc5b03f0ba arch/x86/kvm/svm/svm.c Vitaly Kuznetsov 2020-07-10 3927 return ret; 0234bf885236a41 arch/x86/kvm/svm.c Ladi Prosek 2017-10-11 3928 } --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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