kcsan_save_irqtrace
struct irqtrace_events kcsan_save_irqtrace;
task->kcsan_save_irqtrace = task->irqtrace;
task->irqtrace = task->kcsan_save_irqtrace;
kcsan_save_irqtrace(current);
kcsan_save_irqtrace(current);
void kcsan_save_irqtrace(struct task_struct *task);