nmi_cpu_backtrace_handler 49 arch/x86/kernel/apic/hw_nmi.c NOKPROBE_SYMBOL(nmi_cpu_backtrace_handler); nmi_cpu_backtrace_handler 53 arch/x86/kernel/apic/hw_nmi.c register_nmi_handler(NMI_LOCAL, nmi_cpu_backtrace_handler,