[<0>] do_wait+0x5d/0x100
[<0>] kernel_wait4+0xb3/0x160
[<0>] __do_sys_wait4+0xad/0xc0
[<0>] do_syscall_64+0x85/0x180
[<0>] entry_SYSCALL_64_after_hwframe+0x76/0x7e
