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Date: Mon, 10 Feb 2020 04:32:33 -0800
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Greg Kurz <groug@...d.org>,
Sean Christopherson <sean.j.christopherson@...el.com>,
Paul Mackerras <paulus@...abs.org>,
Paolo Bonzini <pbonzini@...hat.com>
Subject: [PATCH 5.5 240/367] KVM: PPC: Book3S HV: Uninit vCPU if vcore creation fails
From: Sean Christopherson <sean.j.christopherson@...el.com>
commit 1a978d9d3e72ddfa40ac60d26301b154247ee0bc upstream.
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: 371fefd6f2dc4 ("KVM: PPC: Allow book3s_hv guests to use SMT processor modes")
Cc: stable@...r.kernel.org
Reviewed-by: Greg Kurz <groug@...d.org>
Signed-off-by: Sean Christopherson <sean.j.christopherson@...el.com>
Acked-by: Paul Mackerras <paulus@...abs.org>
Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
arch/powerpc/kvm/book3s_hv.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -2368,7 +2368,7 @@ static struct kvm_vcpu *kvmppc_core_vcpu
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
return vcpu;
+uninit_vcpu:
+ kvm_vcpu_uninit(vcpu);
free_vcpu:
kmem_cache_free(kvm_vcpu_cache, vcpu);
out:
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