$ truss -pf 18714 18714: accept(3, 0xFFBEEC4C, 0xFFBEEC5C, 1) (sleeping...) 18714: accept(3, 0xFFBEEC4C, 0xFFBEEC5C, 1) = 4 18714: fcntl(4, F_SETFD, 0x00000001) = 0 18714: fork() = 7531 7531: fork() (returning as child ...) = 18714 7531: getpid() = 7531 [18714] 18714: write(1, " 1 8 7 1 4 c o n n e c".., 26) = 26 18714: getcontext(0xFFBEE798) 7531: write(1, "\t 7 5 3 1 c o n t r o".., 27) = 27 18714: getcontext(0xFFBEE660) 18714: close(4) = 0 18714: llseek(4, 0, SEEK_CUR) Err#9 EBADF 18714: close(4) Err#9 EBADF 7531: fstat64(4, 0xFFBEEAA0) = 0 18714: write(1, "\t 1 8 7 1 4 w a i t i".., 33) = 33 7531: brk(0x00B7E000) = 0 7531: ioctl(4, TCGETA, 0xFFBEEA2C) Err#22 EINVAL 7531: read(4, " F r T ; @ 1 8 | $ 9 | S".., 8192) = 215 7531: time() = 1077734297 7531: write(1, " 7 5 3 1 1 0 7 7 7 3 4".., 319) = 319 18714: getcontext(0xFFBEE798) 7531: fork() = 7533 7533: fork() (returning as child ...) = 7531 7533: getpid() = 7533 [7531] 7531: write(1, " 7 5 3 1 f o r k e d ".., 17) = 17 7533: Incurred fault #5, FLTACCESS %pc = 0x00029F18 7533: siginfo: SIGBUS BUS_ADRALN addr=0x47454E35 7533: Received signal #10, SIGBUS [default] 7533: siginfo: SIGBUS BUS_ADRALN addr=0x47454E35 7531: time() = 1077734297 7531: write(1, " 7 5 3 1 1 0 7 7 7 3 4".., 114) = 114 7531: Incurred fault #5, FLTACCESS %pc = 0x00029F18 7531: siginfo: SIGBUS BUS_ADRALN addr=0x47454E35 7531: Received signal #10, SIGBUS [default] 7531: siginfo: SIGBUS BUS_ADRALN addr=0x47454E35 7531: *** process killed *** 18714: Received signal #18, SIGCLD, in accept() [caught] 18714: siginfo: SIGCLD CLD_KILLED pid=7531 status=0x000A 18714: accept(3, 0xFFBEEC4C, 0xFFBEEC5C, 1) Err#91 ERESTART 18714: waitid(P_ALL, 0, 0xFFBEE548, WEXITED|WTRAPPED) = 0 18714: sigaction(SIGCLD, 0xFFBEE440, 0xFFBEE4C0) = 0 18714: setcontext(0xFFBEE930) 18714: getcontext(0xFFBEE798) 18714: getcontext(0xFFBEE660) 18714: write(1, "\t 1 8 7 1 4 w a i t i".., 33) = 33 18714: getcontext(0xFFBEE798) 18714: accept(3, 0xFFBEEC4C, 0xFFBEEC5C, 1) (sleeping...) 7533: *** process killed ***