Commit 4cb8b116 authored Mar 31, 2019 by Wei Yang Committed by Paolo Bonzini Jun 18, 2019

kvm: x86: offset is ensure to be in range



In function apic_mmio_write(), the offset has been checked in:

   * apic_mmio_in_range()
   * offset & 0xf

These two ensures offset is in range [0x010, 0xff0].

Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

parent ee171d2f

arch/x86/kvm/lapic.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -2023,7 +2023,7 @@ static int apic_mmio_write(struct kvm_vcpu vcpu, struct kvm_io_device this,
		apic_debug("%s: offset 0x%x with length 0x%x, and value is "
		"0x%x\n", __func__, offset, len, val);

		kvm_lapic_reg_write(apic, offset & 0xff0, val);
		kvm_lapic_reg_write(apic, offset, val);

		return 0;
		}

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