=== step 1 ===
/proc/self/fdinfo/91:lock:	1: FLOCK  ADVISORY  WRITE 
/proc/self/fdinfo/92:lock:	1: FLOCK  ADVISORY  WRITE 
/proc/self/fdinfo/93:lock:	1: FLOCK  ADVISORY  WRITE 
=== step 2 ===
/proc/self/fdinfo/91:lock:	1: FLOCK  ADVISORY  WRITE 
/proc/self/fdinfo/93:lock:	1: FLOCK  ADVISORY  WRITE 
=== step 3 ===
/proc/self/fdinfo/91:lock:	1: FLOCK  ADVISORY  WRITE 
/proc/self/fdinfo/92:lock:	1: FLOCK  ADVISORY  WRITE 
/proc/self/fdinfo/93:lock:	1: FLOCK  ADVISORY  WRITE 
=== step 4 ===
/proc/self/fdinfo/91:lock:	1: FLOCK  ADVISORY  WRITE 
/proc/self/fdinfo/92:lock:	1: FLOCK  ADVISORY  WRITE 
/proc/self/fdinfo/93:lock:	1: FLOCK  ADVISORY  WRITE 
=== step 5 ===
=== step 6 ===
/proc/self/fdinfo/91:lock:	1: FLOCK  ADVISORY  READ 
/proc/self/fdinfo/92:lock:	1: FLOCK  ADVISORY  READ 
/proc/self/fdinfo/93:lock:	1: FLOCK  ADVISORY  READ 
unable to take write lock
=== step 7 ===
/proc/self/fdinfo/94:lock:	1: FLOCK  ADVISORY  WRITE 
rc=0
