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KVM: VMX: Set failure code in prepare_vmcs02()

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[ Upstream commit bfbb307c62 ]

The error paths in the prepare_vmcs02() function are supposed to set
*entry_failure_code but this path does not.  It leads to using an
uninitialized variable in the caller.

Fixes: 71f7347025 ("KVM: nVMX: Load GUEST_IA32_PERF_GLOBAL_CTRL MSR on VM-Entry")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Message-Id: <20211130125337.GB24578@kili>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dan Carpenter
2021-11-30 15:53:37 +03:00
committed by Greg Kroah-Hartman
parent 60ce9a7540
commit 64ca109bf8
1 changed files with 3 additions and 1 deletions
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4
arch/x86/kvm/vmx/nested.c
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@@ -2619,8 +2619,10 @@ static int prepare_vmcs02(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12,
if ((vmcs12->vm_entry_controls & VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL) &&
WARN_ON_ONCE(kvm_set_msr(vcpu, MSR_CORE_PERF_GLOBAL_CTRL,
vmcs12->guest_ia32_perf_global_ctrl)))
vmcs12->guest_ia32_perf_global_ctrl))) {
*entry_failure_code = ENTRY_FAIL_DEFAULT;
return -EINVAL;
}
kvm_rsp_write(vcpu, vmcs12->guest_rsp);
kvm_rip_write(vcpu, vmcs12->guest_rip);