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KVM: arm/arm64: vgic-its: Check result of allocation before use

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commit 686f294f2f upstream.

We miss a test against NULL after allocation.

Fixes: 6d03a68f80 ("KVM: arm64: vgic-its: Turn device_id validation into generic ID validation")
Reported-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Marc Zyngier 2017-11-16 17:58:18 +00:00 committed by Greg Kroah-Hartman
parent c6c0913bd1
commit fdbc5f3c5e
1 changed files with 2 additions and 0 deletions
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2
virt/kvm/arm/vgic/vgic-its.c
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@ -775,6 +775,8 @@ static int vgic_its_alloc_collection(struct vgic_its *its,
return E_ITS_MAPC_COLLECTION_OOR;
collection = kzalloc(sizeof(*collection), GFP_KERNEL);
if (!collection)
return -ENOMEM;
collection->collection_id = coll_id;
collection->target_addr = COLLECTION_NOT_MAPPED;