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This patch makes sure we do unlink a vcpu's sie control block from the system control area in kvm_arch_vcpu_destroy. This prevents illegal accesses to the sie control block from other virtual cpus after free. Reported-by: Mijo Safradin <mijo@linux.vnet.ibm.com> Signed-off-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Christian Ehrhardt <ehrhardt@de.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>