console_owner    1663 kernel/printk/printk.c static struct task_struct *console_owner;
console_owner    1678 kernel/printk/printk.c 	console_owner = current;
console_owner    1706 kernel/printk/printk.c 	console_owner = NULL;
console_owner    1750 kernel/printk/printk.c 	owner = READ_ONCE(console_owner);