From 73cb85568433feadb79e963bf2efba9b3e9ae3df Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Tue, 7 May 2019 09:06:26 -0700 Subject: [PATCH] KVM: nVMX: Don't dump VMCS if virtual APIC page can't be mapped ... as a malicious userspace can run a toy guest to generate invalid virtual-APIC page addresses in L1, i.e. flood the kernel log with error messages. Fixes: 690908104e39d ("KVM: nVMX: allow tests to use bad virtual-APIC page address") Cc: stable@vger.kernel.org Cc: Paolo Bonzini Signed-off-by: Sean Christopherson Signed-off-by: Paolo Bonzini --- arch/x86/kvm/vmx/nested.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c index 691f84bff051..4ba0e7b60253 100644 --- a/arch/x86/kvm/vmx/nested.c +++ b/arch/x86/kvm/vmx/nested.c @@ -2880,9 +2880,6 @@ static void nested_get_vmcs12_pages(struct kvm_vcpu *vcpu) */ vmcs_clear_bits(CPU_BASED_VM_EXEC_CONTROL, CPU_BASED_TPR_SHADOW); - } else { - printk("bad virtual-APIC page address\n"); - dump_vmcs(); } } -- 2.25.1