=== WEDGE 8s: child FETCH(8s) holds tty_token, parent GETCAP at t=2s ===
--- ps mid-wedge (t=4s):
   PID   PPID STAT   WCHAN    UCOMM
   926    925 S1     wait     ppslockdemo
   928    926 S4     ppsfch   ppslockdemo
--- result:
parent 926: child=928 mode=8
child 928: PPS_IOC_FETCH timeout=8s 0ns
child 928: FETCH returned -1 errno=60 (Operation timed out)
parent: GETCAP r=0 cap=0x1133 elapsed=0.000 s errno=0  <-- WEDGED for ~6s if bug present
wedge_rc=0
--- at t=12s (child asked for a FINITE 1ns timeout):
   PID   PPID STAT   WCHAN    UCOMM
--- wi.out so far:
parent 938: child=940 mode=inf
child 940: PPS_IOC_FETCH timeout=0s 0ns
child 940: FETCH returned 0 errno=0 (Undefined error: 0)
parent: GETCAP r=0 cap=0x1133 elapsed=0.000 s errno=0  <-- control, expect ~0.000s
--- killing wedge child 940
kill: 940: No such process
--- after kill -9:
parent 938: child=940 mode=inf
child 940: PPS_IOC_FETCH timeout=0s 0ns
child 940: FETCH returned 0 errno=0 (Undefined error: 0)
parent: GETCAP r=0 cap=0x1133 elapsed=0.000 s errno=0  <-- control, expect ~0.000s
(no ppslock processes left)
REBUILD_OK
--- at t=12s (child asked for a FINITE 1ns timeout):
   PID   PPID STAT   WCHAN    UCOMM
   971      1 S0     ppsfch   ppslockdemo
--- wi.out so far:
parent 964: child=971 mode=inf
child 971: PPS_IOC_FETCH timeout=0s 1ns
parent: GETCAP r=0 cap=0x1133 elapsed=0.000 s errno=0
--- killing wedge child 971
--- after kill -9:
parent 964: child=971 mode=inf
child 971: PPS_IOC_FETCH timeout=0s 1ns
parent: GETCAP r=0 cap=0x1133 elapsed=0.000 s errno=0
(no ppslock processes left)