>  13024 tail     RET   kevent 1
>  13024 tail     CALL  read(0x3,0x8750a000,0x4000)
>  13024 tail     GIO   fd 3 read 6 bytes
>        "foobar"
>  13024 tail     RET   read 6
>  13024 tail     CALL  read(0x3,0x8750a000,0x4000)
>  13024 tail     RET   read 0
>  13024 tail     CALL  write(0x1,0x83b2f000,0x6)
>  13024 tail     GIO   fd 1 wrote 6 bytes
>        "foobar"
>  13024 tail     RET   write 6
>  13024 tail     CALL  kevent(0x4,0,0,0xcfbf1b70,0x1,0)
>  13024 tail     PSIG  SIGINT SIG_DFL code 0