cpu0_irqstack 34 arch/um/kernel/skas/process.c extern char cpu0_irqstack[]; cpu0_irqstack 38 arch/um/kernel/skas/process.c stack_protections((unsigned long) &cpu0_irqstack); cpu0_irqstack 39 arch/um/kernel/skas/process.c set_sigstack(cpu0_irqstack, THREAD_SIZE); cpu0_irqstack 55 arch/um/kernel/um_arch.c union thread_union cpu0_irqstack