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authorMarc Zyngier <marc.zyngier@arm.com>2017-11-16 20:58:18 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-12-14 11:28:14 +0300
commit7df3dbef3dd5bd1e0a7e1902aab7c5bdd8923a81 (patch)
tree7c62131aed0d07d17a680ab5d12fd067bbabdb65 /virt/kvm
parent42c3f4c55f10102b3e522ae99754a9a0ea41235d (diff)
downloadlinux-7df3dbef3dd5bd1e0a7e1902aab7c5bdd8923a81.tar.xz
KVM: arm/arm64: vgic-its: Check result of allocation before use
commit 686f294f2f1ae40705283dd413ca1e4c14f20f93 upstream. We miss a test against NULL after allocation. Fixes: 6d03a68f8054 ("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>
Diffstat (limited to 'virt/kvm')
-rw-r--r--virt/kvm/arm/vgic/vgic-its.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c
index 4660a7d04eea..6af22fe9e082 100644
--- a/virt/kvm/arm/vgic/vgic-its.c
+++ b/virt/kvm/arm/vgic/vgic-its.c
@@ -687,6 +687,8 @@ 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;