11550 gettid() = 11550
11550 +++ exited with 0 +++
11555 gettid() = 2 /* 11555 in strace's PID NS */
11555 +++ exited with 0 +++
11570 gettid() = 3 /* 11570 in strace's PID NS */
11570 +++ exited with 0 +++
11582 gettid() = 4 /* 11582 in strace's PID NS */
11582 +++ exited with 0 +++
11594 gettid() = 5 /* 11594 in strace's PID NS */
11594 +++ exited with 0 +++
