[<0>] rcu_tasks_one_gp+0x5c/0x150
[<0>] rcu_tasks_kthread+0xa4/0xd0
[<0>] kthread+0xf2/0x120
[<0>] ret_from_fork+0x47/0x70
[<0>] ret_from_fork_asm+0x1b/0x30