KVM: s390: Fix possible memory leak of in kvm_arch_vcpu_create()

This patch fixed possible memory leak in kvm_arch_vcpu_create()
under s390, which would happen when kvm_arch_vcpu_create() fails.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Acked-by: Carsten Otte <cotte@de.ibm.com>
Cc: stable@kernel.org
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 49292869a5cd..ee7c713686ce 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -341,11 +341,13 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
 
         rc = kvm_vcpu_init(vcpu, kvm, id);
         if (rc)
-                goto out_free_cpu;
+                goto out_free_sie_block;
         VM_EVENT(kvm, 3, "create cpu %d at %p, sie block at %p", id, vcpu,
                  vcpu->arch.sie_block);
 
         return vcpu;
+out_free_sie_block:
+        free_page((unsigned long)(vcpu->arch.sie_block));
 out_free_cpu:
         kfree(vcpu);
 out_nomem: