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Commit 443c39bc authored by Wei Yongjun's avatar Wei Yongjun Committed by Marcelo Tosatti
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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: default avatarWei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
parent 36cb93fd

arch/x86/kvm/x86.c

+3 −2
Original line number Original line Diff line number Diff line
@@ -5072,12 +5072,13 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) 
				       GFP_KERNEL);

				       GFP_KERNEL);

	if (!vcpu->arch.mce_banks) {

	if (!vcpu->arch.mce_banks) {

		r = -ENOMEM;

		r = -ENOMEM;

		goto fail_mmu_destroy;

		goto fail_free_lapic;

	}

	}

	vcpu->arch.mcg_cap = KVM_MAX_MCE_BANKS;

	vcpu->arch.mcg_cap = KVM_MAX_MCE_BANKS;





	return 0;

	return 0;



fail_free_lapic:

	kvm_free_lapic(vcpu);

fail_mmu_destroy:

fail_mmu_destroy:

	kvm_mmu_destroy(vcpu);

	kvm_mmu_destroy(vcpu);

fail_free_pio_data:

fail_free_pio_data: