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-rw-r--r--arch/x86/kernel/acpi/boot.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 32a7d70913ac..8a5abaa7d453 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -233,6 +233,10 @@ acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end)
acpi_table_print_madt_entry(header);
+ /* Ignore invalid ID */
+ if (processor->id == 0xff)
+ return 0;
+
/*
* We need to register disabled CPU as well to permit
* counting disabled CPUs. This allows us to size