1 files changed, 7 insertions, 1 deletions

diff --git a/arch/x86_64/kernel/traps.c b/arch/x86_64/kernel/traps.c
index 121646fc43f6..102736630002 100644
--- a/arch/x86_64/kernel/traps.c
+++ b/arch/x86_64/kernel/traps.c
@@ -586,11 +586,17 @@ static void unknown_nmi_error(unsigned char reason, struct pt_regs * regs)
 asmlinkage void default_do_nmi(struct pt_regs *regs)
 {
         unsigned char reason = 0;
+        int cpu;
+
+        cpu = smp_processor_id();
 
         /* Only the BSP gets external NMIs from the system.  */
-        if (!smp_processor_id())
+        if (!cpu)
                 reason = get_nmi_reason();
 
+        if (!cpu_online(cpu))
+                return;
+
         if (!(reason & 0xc0)) {
                 if (notify_die(DIE_NMI_IPI, "nmi_ipi", regs, reason, 0, SIGINT)
                                                                 == NOTIFY_STOP)