[<ffffffff810131e0>] save_stack_trace_tsk+0x19/0x34
[<ffffffff811415b8>] proc_pid_stack+0x6e/0xbd
[<ffffffff81142567>] proc_single_show+0x48/0x65
[<ffffffff8103840a>] should_resched+0x5/0x24
[<ffffffff8111428c>] seq_read+0x169/0x350
[<ffffffff810fbc10>] vfs_read+0x9f/0xf2
[<ffffffff810fbca8>] sys_read+0x45/0x6b
[<ffffffff8133ba92>] system_call_fastpath+0x16/0x1b
[<ffffffffffffffff>] 0xffffffffffffffff