6955  gettid() = 6955
6955  +++ exited with 0 +++
6957  gettid() = 2 /* 6957 in strace's PID NS */
6957  +++ exited with 0 +++
6958  gettid() = 3 /* 6958 in strace's PID NS */
6958  +++ exited with 0 +++
6959  gettid() = 4 /* 6959 in strace's PID NS */
6959  +++ exited with 0 +++
6960  gettid() = 5 /* 6960 in strace's PID NS */
6960  +++ exited with 0 +++
