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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2019-01-09 20:22:56 +0300 |
|---|---|---|
| committer | Radim Krčmář <rkrcmar@redhat.com> | 2019-01-11 20:41:53 +0300 |
| commit | 826c1362e79abcd36f99092acd083b5a2d576676 (patch) | |
| tree | 01d931fba8a4c188e972f7956d4bec2acff78a4c | |
| parent | cf1754c2a1d6e92688f7353aa7f598f5ad6d8f78 (diff) | |
| download | linux-826c1362e79abcd36f99092acd083b5a2d576676.tar.xz | |
x86/kvm/nVMX: don't skip emulated instruction twice when vmptr address is not backed
Since commit 09abb5e3e5e50 ("KVM: nVMX: call kvm_skip_emulated_instruction
in nested_vmx_{fail,succeed}") nested_vmx_failValid() results in
kvm_skip_emulated_instruction() so doing it again in handle_vmptrld() when
vmptr address is not backed is wrong, we end up advancing RIP twice.
Fixes: fca91f6d60b6e ("kvm: nVMX: Set VM instruction error for VMPTRLD of unbacked page")
Reported-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Sean Christopherson <sean.j.christopherson@intel.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
| -rw-r--r-- | arch/x86/kvm/vmx/nested.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c index 3170e291215d..2616bd2c7f2c 100644 --- a/arch/x86/kvm/vmx/nested.c +++ b/arch/x86/kvm/vmx/nested.c @@ -4540,9 +4540,8 @@ static int handle_vmptrld(struct kvm_vcpu *vcpu) * given physical address won't match the required * VMCS12_REVISION identifier. */ - nested_vmx_failValid(vcpu, + return nested_vmx_failValid(vcpu, VMXERR_VMPTRLD_INCORRECT_VMCS_REVISION_ID); - return kvm_skip_emulated_instruction(vcpu); } new_vmcs12 = kmap(page); if (new_vmcs12->hdr.revision_id != VMCS12_REVISION || |