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acpi: Assert sts array limit on AcpiCpuHotplug_add()

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AcpiCpuHotplug_add() can't handle vCPU arch IDs larger than
ACPI_CPU_HOTPLUG_ID_LIMIT. Instead of corrupting memory in case the vCPU
ID is too large, use g_assert() to ensure we are not over the limit.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Eduardo Habkost 2014-03-14 16:33:52 -03:00 committed by Michael S. Tsirkin
parent 5ff020b7b0
commit 39ee3af3a8
1 changed files with 1 additions and 0 deletions
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hw/acpi/cpu_hotplug.c
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@ -43,6 +43,7 @@ void AcpiCpuHotplug_add(ACPIGPE *gpe, AcpiCpuHotplug *g, CPUState *cpu)
*gpe->sts = *gpe->sts | ACPI_CPU_HOTPLUG_STATUS;
cpu_id = k->get_arch_id(CPU(cpu));
g_assert((cpu_id / 8) < ACPI_GPE_PROC_LEN);
g->sts[cpu_id / 8] |= (1 << (cpu_id % 8));
}