[<0>] do_wait+0x15c/0x2e0
[<0>] kernel_wait4+0xbc/0x168
[<0>] __do_sys_wait4+0xb7/0xca
[<0>] do_syscall_64+0x35/0x87
[<0>] entry_SYSCALL_64_after_hwframe+0x6e/0x0
