[IA64] Avoid array overflow if there are too many cpus in SRAT table

[pandora-kernel.git] / arch / ia64 / kernel / acpi.c

diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index c6c90f3..7b897b7 100644 (file)
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -477,6 +477,12 @@ acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
        if (!(pa->flags & ACPI_SRAT_CPU_ENABLED))
                return;
 
+       if (srat_num_cpus >= ARRAY_SIZE(node_cpuid)) {
+               printk_once(KERN_WARNING
+                           "node_cpuid[%d] is too small, may not be able to use all cpus\n",
+                           ARRAY_SIZE(node_cpuid));
+               return;
+       }
        pxm = get_processor_proximity_domain(pa);
 
        /* record this node in proximity bitmap */