13438 gettid() = 13438
13438 +++ exited with 0 +++
13441 gettid() = 2 /* 13441 in strace's PID NS */
13441 +++ exited with 0 +++
13448 gettid() = 3 /* 13448 in strace's PID NS */
13448 +++ exited with 0 +++
13460 gettid() = 4 /* 13460 in strace's PID NS */
13460 +++ exited with 0 +++
13469 gettid() = 5 /* 13469 in strace's PID NS */
13469 +++ exited with 0 +++
