--- arch/arm/kernel/smp.c

+++ arch/arm/kernel/smp.c

@@ -672,9 +672,7 @@ void handle_IPI(int ipinr, struct pt_reg

break;

case IPI_CPU_BACKTRACE:

- irq_enter();

ipi_cpu_backtrace(cpu, regs);

- irq_exit();

break;

default: