From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sean Christopherson Date: Wed, 18 Dec 2019 21:54:46 +0000 Subject: [PATCH v2 01/45] KVM: PPC: Book3S HV: Uninit vCPU if vcore creation fails Message-Id: <20191218215530.2280-2-sean.j.christopherson@intel.com> List-Id: References: <20191218215530.2280-1-sean.j.christopherson@intel.com> In-Reply-To: <20191218215530.2280-1-sean.j.christopherson@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Marc Zyngier , James Hogan , Paul Mackerras , Christian Borntraeger , Janosch Frank , Paolo Bonzini Cc: James Morse , Julien Thierry , Suzuki K Poulose , David Hildenbrand , Cornelia Huck , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-mips@vger.kernel.org, kvm-ppc@vger.kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Greg Kurz 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@vger.kernel.org Reviewed-by: Greg Kurz Signed-off-by: Sean Christopherson --- arch/powerpc/kvm/book3s_hv.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index dc53578193ee..d07d2f5273e5 100644 --- 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_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: -- 2.24.1