[PATCH] KVM: ia64: clear kvm->arch.vioapic if fail to create irq chip

[Wei Yongjun]

If fail to create irq chip due to fail of kvm_setup_default_irq_routing(),
kvm->arch.vioapic is not set to NULL, this may cause KVM_GET_IRQCHIP and
KVM_SET_IRQCHIP access to unexcepted memory.

Signed-off-by: Wei Yongjun <yj...@cn.fujitsu.com>
---
 arch/ia64/kvm/kvm-ia64.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
index 0618898..0cfc15d 100644
--- a/arch/ia64/kvm/kvm-ia64.c
+++ b/arch/ia64/kvm/kvm-ia64.c
@@ -969,6 +969,7 @@ long kvm_arch_vm_ioctl(struct file *filp,
                r = kvm_setup_default_irq_routing(kvm);
                if (r) {
                        kfree(kvm->arch.vioapic);
+                       kvm->arch.vioapic = NULL;
                        goto out;
                }
                break;
-- 
1.6.3.3


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