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KVM: PPC: Book3S HV: Uninit vCPU if vcore creation fails 

Call kvm_vcpu_uninit() if vcore creation fails to avoid leaking any
resources allocated by kvm_vcpu_init(), i.e. the vcpu->run page.

Fixes: 371fefd6f2 ("KVM: PPC: Allow book3s_hv guests to use SMT processor modes")
Cc: stable@vger.kernel.org
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Acked-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2019-12-18 13:54:46 -08:00 committed by Paolo Bonzini
parent 6441fa6178
commit 1a978d9d3e
1 changed files with 3 additions and 1 deletions
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4
arch/powerpc/kvm/book3s_hv.c
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@ -2368,7 +2368,7 @@ static struct kvm_vcpu *kvmppc_core_vcpu_create_hv(struct kvm *kvm,
mutex_unlock(&kvm->lock);
if (!vcore)
goto free_vcpu;
goto uninit_vcpu;
spin_lock(&vcore->lock);
++vcore->num_threads;
@ -2385,6 +2385,8 @@ static struct kvm_vcpu *kvmppc_core_vcpu_create_hv(struct kvm *kvm,
return vcpu;
uninit_vcpu:
kvm_vcpu_uninit(vcpu);
free_vcpu:
kmem_cache_free(kvm_vcpu_cache, vcpu);
out: