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Sun, 19 Jan 2020 22:34:17 -0500 (EST) Received: from ozlabs.org (bilbo.ozlabs.org [203.11.71.1]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 842094A830 for ; Sun, 19 Jan 2020 22:34:17 -0500 (EST) Received: by ozlabs.org (Postfix, from userid 1003) id 481HMj02PMz9sRK; Mon, 20 Jan 2020 14:34:08 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ozlabs.org; s=201707; t=1579491249; bh=Bx1QENbI/taNJYozRF14LNd8JjoLRwCSpGh5bRXaoZc=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=BalvDW2whNPsvCmtISkbOhDMpZauUgvHl09Uaty2WElwJ6Cza+b4DeHGcnUNwOLV3 g6DRm1DMzCI/vBJ1PlZfghThTKRiDTXm/9cEYl1gDtPWzG4q+29NKYsabkOFnLKJZW pu7HnKn8KFD4ACQ0z1wJAaZ09+iERSqPxVmZuqJ9tVnb3xT4AbRscYT7AxP5jHVWa0 3Gb0VAa6x9zDA27RPpRqnF9yfWp6Q9n39W6+HvqOjYYy/h9z34BptPYaZs8RzgPLLz x8CTvY8aTo7+f8KU7v7y459Sv+srWbj2FDlNPNQXb3Ix1Y7vabAiDRVuXNEoR2XexB QTFYCAbB5+mEg== Date: Mon, 20 Jan 2020 13:57:16 +1100 From: Paul Mackerras To: Sean Christopherson Subject: Re: [PATCH v2 01/45] KVM: PPC: Book3S HV: Uninit vCPU if vcore creation fails Message-ID: <20200120025716.GA14307@blackberry> References: <20191218215530.2280-1-sean.j.christopherson@intel.com> <20191218215530.2280-2-sean.j.christopherson@intel.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20191218215530.2280-2-sean.j.christopherson@intel.com> User-Agent: Mutt/1.5.24 (2015-08-30) Cc: Cornelia Huck , Wanpeng Li , Janosch Frank , kvm@vger.kernel.org, Marc Zyngier , Joerg Roedel , David Hildenbrand , linux-mips@vger.kernel.org, kvm-ppc@vger.kernel.org, linux-kernel@vger.kernel.org, Christian Borntraeger , Greg Kurz , linux-arm-kernel@lists.infradead.org, James Hogan , Paolo Bonzini , Vitaly Kuznetsov , kvmarm@lists.cs.columbia.edu, Jim Mattson X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu On Wed, Dec 18, 2019 at 01:54:46PM -0800, Sean Christopherson wrote: > 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 Looks correct. Acked-by: Paul Mackerras _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm