double_fault 22 arch/x86/include/asm/traps.h asmlinkage void double_fault(void); double_fault 91 arch/x86/kernel/idt.c INTG(X86_TRAP_DF, double_fault), double_fault 187 arch/x86/kernel/idt.c ISTG(X86_TRAP_DF, double_fault, IST_INDEX_DF), double_fault 607 arch/x86/xen/enlighten_pv.c { double_fault, xen_double_fault, true },