# cat python-popen-script.pyimport subprocessp = subprocess.Popen(['ls', '-l'])# trace -a -x "./python python-popen-script.py"# trcrpt > capture_trcrpt# head -25 capture_trcrptMon Nov 17 02:43:50 2025System: AIX 7.2 Node: fvtvios10Machine: 00F905D14C00Internet Address: 0972E2D7 9.114.226.215At trace startup, the system contained 8 cpus, of which 8 were traced.Buffering: Kernel HeapThis is from a 64-bit kernel.Tracing all hooks.trace -a -x ./python python-popen-script.py     ID      ELAPSED_SEC     DELTA_MSEC   APPL    SYSCALL KERNEL  INTERRUPT101     0.000000000       0.000000           close LR = 101CB570104     0.000000345       0.000345           return from close. error EBADF [0 usec]101     0.000001187       0.000842           close LR = 101CB580104     0.000001523       0.000336           return from close. error EBADF [0 usec]101     0.000002361       0.000838           close LR = 101CB570104     0.000002705       0.000344           return from close. error EBADF [0 usec]101     0.000003541       0.000836           close LR = 101CB580104     0.000003884       0.000343           return from close. error EBADF [0 usec]101     0.000004734       0.000850           close LR = 101CB570104     0.000005080       0.000346           return from close. error EBADF [0 usec]101     0.000005919       0.000839           close LR = 101CB580104     0.000006253       0.000334           return from close. error EBADF [0 usec]# grep EBADF capture_trcrpt | wc -l21409