15800 gettid() = 15800
15800 +++ exited with 0 +++
15802 gettid() = 2 /* 15802 in strace's PID NS */
15802 +++ exited with 0 +++
15803 gettid() = 3 /* 15803 in strace's PID NS */
15803 +++ exited with 0 +++
15804 gettid() = 4 /* 15804 in strace's PID NS */
15804 +++ exited with 0 +++
15805 gettid() = 5 /* 15805 in strace's PID NS */
15805 +++ exited with 0 +++
