CC: kbuild-...@lists.01.org CC: linux-ker...@vger.kernel.org TO: Vineeth Pillai <virem...@linux.microsoft.com> CC: Paolo Bonzini <pbonz...@redhat.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: ff1176468d368232b684f75e82563369208bc371 commit: c4327f15dfc7294b2abde0ea49b3e43eec3cca38 KVM: SVM: hyper-v: Enlightened MSR-Bitmap support date: 6 weeks ago :::::: branch date: 14 hours ago :::::: commit date: 6 weeks ago config: x86_64-randconfig-m001-20210726 (attached as .config) compiler: gcc-10 (Ubuntu 10.3.0-1ubuntu1~20.04) 10.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> Reported-by: Dan Carpenter <dan.carpen...@oracle.com> smatch warnings: arch/x86/kvm/svm/svm_onhyperv.h:73 svm_hv_vmcb_dirty_nested_enlightenments() warn: variable dereferenced before check 'vmcb' (see line 65) vim +/vmcb +73 arch/x86/kvm/svm/svm_onhyperv.h 1e0c7d40758bcd Vineeth Pillai 2021-06-03 59 c4327f15dfc729 Vineeth Pillai 2021-06-03 60 static inline void svm_hv_vmcb_dirty_nested_enlightenments( c4327f15dfc729 Vineeth Pillai 2021-06-03 61 struct kvm_vcpu *vcpu) c4327f15dfc729 Vineeth Pillai 2021-06-03 62 { c4327f15dfc729 Vineeth Pillai 2021-06-03 63 struct vmcb *vmcb = to_svm(vcpu)->vmcb; c4327f15dfc729 Vineeth Pillai 2021-06-03 64 struct hv_enlightenments *hve = c4327f15dfc729 Vineeth Pillai 2021-06-03 @65 (struct hv_enlightenments *)vmcb->control.reserved_sw; c4327f15dfc729 Vineeth Pillai 2021-06-03 66 c4327f15dfc729 Vineeth Pillai 2021-06-03 67 /* c4327f15dfc729 Vineeth Pillai 2021-06-03 68 * vmcb can be NULL if called during early vcpu init. c4327f15dfc729 Vineeth Pillai 2021-06-03 69 * And its okay not to mark vmcb dirty during vcpu init c4327f15dfc729 Vineeth Pillai 2021-06-03 70 * as we mark it dirty unconditionally towards end of vcpu c4327f15dfc729 Vineeth Pillai 2021-06-03 71 * init phase. c4327f15dfc729 Vineeth Pillai 2021-06-03 72 */ c4327f15dfc729 Vineeth Pillai 2021-06-03 @73 if (vmcb && vmcb_is_clean(vmcb, VMCB_HV_NESTED_ENLIGHTENMENTS) && c4327f15dfc729 Vineeth Pillai 2021-06-03 74 hve->hv_enlightenments_control.msr_bitmap) c4327f15dfc729 Vineeth Pillai 2021-06-03 75 vmcb_mark_dirty(vmcb, VMCB_HV_NESTED_ENLIGHTENMENTS); c4327f15dfc729 Vineeth Pillai 2021-06-03 76 } 1e0c7d40758bcd Vineeth Pillai 2021-06-03 77 #else 1e0c7d40758bcd Vineeth Pillai 2021-06-03 78 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
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