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From: Ricardo Koller <ricarkol@google.com>
To: kvm@vger.kernel.org, maz@kernel.org,
	kvmarm@lists.cs.columbia.edu,  drjones@redhat.com,
	eric.auger@redhat.com, alexandru.elisei@arm.com
Cc: pshier@google.com, Paolo Bonzini <pbonzini@redhat.com>, shuah@kernel.org
Subject: [PATCH v4 04/11] KVM: arm64: vgic-v3: Check ITS region is not above the VM IPA size
Date: Mon,  4 Oct 2021 18:19:14 -0700	[thread overview]
Message-ID: <20211005011921.437353-5-ricarkol@google.com> (raw)
In-Reply-To: <20211005011921.437353-1-ricarkol@google.com>

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.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
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..ad55bb8cd30f 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;
 
-- 
2.33.0.800.g4c38ced690-goog

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  parent reply	other threads:[~2021-10-05  1:19 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-05  1:19 [PATCH v4 00/11] KVM: arm64: vgic: Missing checks for REDIST/CPU and ITS regions above the VM IPA size Ricardo Koller
2021-10-05  1:19 ` [PATCH v4 01/11] kvm: arm64: vgic: Introduce vgic_check_iorange Ricardo Koller
2021-10-05  1:19 ` [PATCH v4 02/11] KVM: arm64: vgic-v3: Check redist region is not above the VM IPA size Ricardo Koller
2021-10-05  1:19 ` [PATCH v4 03/11] KVM: arm64: vgic-v2: Check cpu interface " Ricardo Koller
2021-10-05  1:19 ` Ricardo Koller [this message]
2021-10-05  1:19 ` [PATCH v4 05/11] KVM: arm64: vgic: Drop vgic_check_ioaddr() Ricardo Koller
2021-10-05  7:56   ` Eric Auger
2021-10-05  1:19 ` [PATCH v4 06/11] KVM: arm64: selftests: Make vgic_init gic version agnostic Ricardo Koller
2021-10-06  9:46   ` Andrew Jones
2021-10-05  1:19 ` [PATCH v4 07/11] KVM: arm64: selftests: Make vgic_init/vm_gic_create " Ricardo Koller
2021-10-06  9:47   ` Andrew Jones
2021-10-05  1:19 ` [PATCH v4 08/11] KVM: arm64: selftests: Add some tests for GICv2 in vgic_init Ricardo Koller
2021-10-05  8:09   ` Eric Auger
2021-10-06  9:52   ` Andrew Jones
2021-10-05  1:19 ` [PATCH v4 09/11] KVM: arm64: selftests: Add tests for GIC redist/cpuif partially above IPA range Ricardo Koller
2021-10-05  8:12   ` Eric Auger
2021-10-06 10:07   ` Andrew Jones
2021-10-05  1:19 ` [PATCH v4 10/11] KVM: arm64: selftests: Add test for legacy GICv3 REDIST base " Ricardo Koller
2021-10-06 10:12   ` Andrew Jones
2021-10-05  1:19 ` [PATCH v4 11/11] KVM: arm64: selftests: Add init ITS device test Ricardo Koller
2021-10-05  8:06   ` Eric Auger
2021-10-06 10:13   ` Andrew Jones
2021-10-11  8:43 ` [PATCH v4 00/11] KVM: arm64: vgic: Missing checks for REDIST/CPU and ITS regions above the VM IPA size Marc Zyngier

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