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From: Eric Auger <eric.auger@redhat.com>
To: Ricardo Koller <ricarkol@google.com>,
	kvm@vger.kernel.org, maz@kernel.org,
	kvmarm@lists.cs.columbia.edu, drjones@redhat.com,
	alexandru.elisei@arm.com
Cc: pshier@google.com, Paolo Bonzini <pbonzini@redhat.com>, shuah@kernel.org
Subject: Re: [PATCH v3 04/10] KVM: arm64: vgic-v3: Check ITS region is not above the VM IPA size
Date: Wed, 29 Sep 2021 18:24:28 +0200	[thread overview]
Message-ID: <fc09a2a3-960a-9444-d736-7a6171d710af@redhat.com> (raw)
In-Reply-To: <20210928184803.2496885-5-ricarkol@google.com>



On 9/28/21 8:47 PM, Ricardo Koller wrote:
> Verify that the ITS region does not extend beyond the VM-specified IPA
> range (phys_size).
>
>   base + size > phys_size AND base < phys_size
>
> Add the missing check into vgic_its_set_attr() which is called when
> setting the region.
>
> Signed-off-by: Ricardo Koller <ricarkol@google.com>
> ---
>  arch/arm64/kvm/vgic/vgic-its.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm64/kvm/vgic/vgic-its.c b/arch/arm64/kvm/vgic/vgic-its.c
> index 61728c543eb9..321743b87002 100644
> --- a/arch/arm64/kvm/vgic/vgic-its.c
> +++ b/arch/arm64/kvm/vgic/vgic-its.c
> @@ -2710,8 +2710,8 @@ static int vgic_its_set_attr(struct kvm_device *dev,
>  		if (copy_from_user(&addr, uaddr, sizeof(addr)))
>  			return -EFAULT;
>  
> -		ret = vgic_check_ioaddr(dev->kvm, &its->vgic_its_base,
> -					addr, SZ_64K);
> +		ret = vgic_check_iorange(dev->kvm, &its->vgic_its_base,
> +					 addr, SZ_64K, KVM_VGIC_V3_ITS_SIZE);
>  		if (ret)
>  			return ret;
>  
Reviewed-by: Eric Auger <eric.auger@redhat.com>

Eric

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  reply	other threads:[~2021-09-29 16:24 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-28 18:47 [PATCH v3 00/10] KVM: arm64: vgic: Missing checks for REDIST/CPU and ITS regions above the VM IPA size Ricardo Koller
2021-09-28 18:47 ` [PATCH v3 01/10] kvm: arm64: vgic: Introduce vgic_check_iorange Ricardo Koller
2021-09-29 16:29   ` Eric Auger
2021-09-29 21:17     ` Ricardo Koller
2021-09-30  7:02       ` Eric Auger
2021-09-30 21:19         ` Ricardo Koller
2021-10-01 13:12           ` Marc Zyngier
2021-10-04 15:48             ` Ricardo Koller
2021-09-28 18:47 ` [PATCH v3 02/10] KVM: arm64: vgic-v3: Check redist region is not above the VM IPA size Ricardo Koller
2021-09-29 16:23   ` Eric Auger
2021-09-29 21:10     ` Ricardo Koller
2021-09-30  7:05       ` Eric Auger
2021-10-01 13:14   ` Marc Zyngier
2021-10-04 15:51     ` Ricardo Koller
2021-09-28 18:47 ` [PATCH v3 03/10] KVM: arm64: vgic-v2: Check cpu interface " Ricardo Koller
2021-09-29 16:30   ` Eric Auger
2021-09-28 18:47 ` [PATCH v3 04/10] KVM: arm64: vgic-v3: Check ITS " Ricardo Koller
2021-09-29 16:24   ` Eric Auger [this message]
2021-09-28 18:47 ` [PATCH v3 05/10] KVM: arm64: selftests: Make vgic_init gic version agnostic Ricardo Koller
2021-09-29 17:12   ` Eric Auger
2021-09-29 21:13     ` Ricardo Koller
2021-09-30  8:05     ` Marc Zyngier
2021-09-30 21:27       ` Ricardo Koller
2021-09-28 18:48 ` [PATCH v3 06/10] KVM: arm64: selftests: Make vgic_init/vm_gic_create " Ricardo Koller
2021-09-30  7:17   ` Eric Auger
2021-09-28 18:48 ` [PATCH v3 07/10] KVM: arm64: selftests: Add some tests for GICv2 in vgic_init Ricardo Koller
2021-09-30  7:42   ` Eric Auger
2021-09-30 21:14     ` Ricardo Koller
2021-09-28 18:48 ` [PATCH v3 08/10] KVM: arm64: selftests: Add tests for GIC redist/cpuif partially above IPA range Ricardo Koller
2021-09-30  8:51   ` Eric Auger
2021-09-30 20:49     ` Ricardo Koller
2021-09-28 18:48 ` [PATCH v3 09/10] KVM: arm64: selftests: Add test for legacy GICv3 REDIST base " Ricardo Koller
2021-09-30  9:00   ` Eric Auger
2021-09-29  0:10 ` [PATCH v3 10/10] KVM: arm64: selftests: Add basic ITS device tests Ricardo Koller
2021-09-30  9:14   ` Eric Auger
2021-09-30 20:10     ` Ricardo Koller
2021-10-05  8:04       ` Eric Auger
2021-10-05  1:03     ` Ricardo Koller

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