KVM: arm/arm64: vgic-its: Check result of allocation before use
commit 686f294f upstream. We miss a test against NULL after allocation. Fixes: 6d03a68f ("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>
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