KVM: x86: Fix leak of free lapic date in kvm_arch_vcpu_init()

In function kvm_arch_vcpu_init(), if the memory malloc for
vcpu->arch.mce_banks is fail, it does not free the memory
of lapic date. This patch fixed it.

Cc: stable@kernel.org
Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index b265eec..1ddcad4 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -5072,12 +5072,13 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
                                       GFP_KERNEL);
        if (!vcpu->arch.mce_banks) {
                r = -ENOMEM;
-               goto fail_mmu_destroy;
+               goto fail_free_lapic;
        }
        vcpu->arch.mcg_cap = KVM_MAX_MCE_BANKS;
 
        return 0;
-
+fail_free_lapic:
+       kvm_free_lapic(vcpu);
 fail_mmu_destroy:
        kvm_mmu_destroy(vcpu);
 fail_free_pio_data: