bisecting fixing commit since 2d19be4653f5e74ed95560b69f94eb6791d49af3
building syzkaller on 06ed56cd22e24a55c40d152880b66b108834c8f2
testing commit 2d19be4653f5e74ed95560b69f94eb6791d49af3
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: ca535fec3a8c7ad7cbe04c382473dda658d1a626ee905fc3fdfc38cbfaf4a7fc
all runs: crashed: SYZFAIL: negative running
testing current HEAD e23d55af0e1fca9be5c99f0c37d48b289f4d6489
testing commit e23d55af0e1fca9be5c99f0c37d48b289f4d6489
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 809dfccc2cd408e07bd90364afa89623af6cda635501a6b04e38a6830ce57c6f
run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: failed to write control pipe: write |NUM: broken pipe
run #1: crashed: SYZFAIL: negative running
run #2: crashed: SYZFAIL: negative running
run #3: crashed: SYZFAIL: negative running
run #4: crashed: SYZFAIL: negative running
run #5: crashed: SYZFAIL: negative running
run #6: crashed: SYZFAIL: negative running
run #7: crashed: SYZFAIL: negative running
run #8: crashed: SYZFAIL: negative running
run #9: crashed: SYZFAIL: negative running
revisions tested: 2, total time: 23m52.130251432s (build: 17m1.970391289s, test: 6m26.219411246s)
the crash still happens on HEAD
commit msg: Linux 4.19.205
crash: SYZFAIL: negative running
th #11: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #12: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #13: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #14: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #15: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
SYZFAIL: negative running
 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67


running=-1 collide=0 completed=2 flag_threaded=1 flag_collide=1 current=0
th # 0: created=1 executing=0 colliding=0 ready=0 done=1 call_index=1 res=0 reserrno=14
th # 1: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 2: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 3: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 4: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 5: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 6: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 7: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 8: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 9: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #10: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #11: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #12: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #13: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #14: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #15: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
SYZFAIL: negative running
 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
2021/09/01 06:57:39 executed programs: 6
2021/09/01 06:57:39 result: hanged=false err=executor 2: exit status 67
running=-1 collide=0 completed=2 flag_threaded=1 flag_collide=1 current=0
th # 0: created=1 executing=0 colliding=0 ready=0 done=1 call_index=1 res=0 reserrno=14
th # 1: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 2: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 3: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 4: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 5: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 6: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 7: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 8: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 9: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #10: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #11: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #12: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #13: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #14: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #15: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
SYZFAIL: negative running
 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67


running=-1 collide=0 completed=2 flag_threaded=1 flag_collide=1 current=0
th # 0: created=1 executing=0 colliding=0 ready=0 done=1 call_index=1 res=0 reserrno=14
th # 1: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 2: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 3: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 4: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 5: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 6: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 7: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 8: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 9: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #10: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #11: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #12: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #13: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #14: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #15: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
SYZFAIL: negative running
 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
2021/09/01 06:57:39 result: hanged=false err=executor 0: exit status 67
running=-1 collide=0 completed=2 flag_threaded=1 flag_collide=1 current=0
th # 0: created=1 executing=0 colliding=0 ready=0 done=1 call_index=1 res=0 reserrno=14
th # 1: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 2: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 3: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 4: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 5: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 6: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 7: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 8: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 9: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #10: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #11: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #12: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #13: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #14: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #15: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
SYZFAIL: negative running
 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67


running=-1 collide=0 completed=2 flag_threaded=1 flag_collide=1 current=0
th # 0: created=1 executing=0 colliding=0 ready=0 done=1 call_index=1 res=0 reserrno=14
th # 1: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 2: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 3: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 4: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 5: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 6: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 7: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 8: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 9: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #10: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #11: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #12: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #13: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #14: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #15: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
SYZFAIL: negative running
 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
2021/09/01 06:57:40 result: hanged=false err=executor 5: exit status 67
running=-1 collide=0 completed=2 flag_threaded=1 flag_collide=1 current=0
th # 0: created=1 executing=0 colliding=0 ready=0 done=1 call_index=1 res=0 reserrno=14
th # 1: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 2: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 3: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 4: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 5: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 6: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 7: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 8: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 9: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #10: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #11: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #12: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #13: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #14: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #15: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
SYZFAIL: negative running
 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67


running=-1 collide=0 completed=2 flag_threaded=1 flag_collide=1 current=0
th # 0: created=1 executing=0 colliding=0 ready=0 done=1 call_index=1 res=0 reserrno=14
th # 1: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 2: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 3: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 4: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 5: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 6: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 7: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 8: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 9: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #10: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #11: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #12: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #13: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #14: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #15: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
SYZFAIL: negative running
 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
2021/09/01 06:57:41 result: hanged=false err=executor 1: exit status 67
running=-1 collide=0 completed=2 flag_threaded=1 flag_collide=1 current=0
th # 0: created=1 executing=0 colliding=0 ready=0 done=1 call_index=1 res=0 reserrno=14
th # 1: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 2: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 3: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 4: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 5: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 6: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 7: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 8: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 9: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #10: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #11: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #12: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #13: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #14: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #15: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
SYZFAIL: negative running
 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67


running=-1 collide=0 completed=2 flag_threaded=1 flag_collide=1 current=0
th # 0: created=1 executing=0 colliding=0 ready=0 done=1 call_index=1 res=0 reserrno=14
th # 1: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 2: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 3: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 4: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 5: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 6: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 7: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 8: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 9: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #10: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #11: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #12: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #13: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #14: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #15: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
SYZFAIL: negative running
 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
2021/09/01 06:57:41 result: hanged=false err=executor 3: exit status 67
running=-1 collide=0 completed=2 flag_threaded=1 flag_collide=1 current=0
th # 0: created=1 executing=0 colliding=0 ready=0 done=1 call_index=1 res=0 reserrno=14
th # 1: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 2: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 3: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 4: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 5: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 6: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 7: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 8: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 9: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #10: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #11: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #12: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #13: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #14: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #15: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
SYZFAIL: negative running
 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67


running=-1 collide=0 completed=2 flag_threaded=1 flag_collide=1 current=0
th # 0: created=1 executing=0 colliding=0 ready=0 done=1 call_index=1 res=0 reserrno=14
th # 1: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 2: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 3: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 4: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 5: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 6: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 7: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 8: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th # 9: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #10: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #11: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #12: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #13: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #14: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
th #15: created=0 executing=0 colliding=0 ready=0 done=0 call_index=0 res=0 reserrno=0
SYZFAIL: negative running
 (errno 11: Resource temporarily unavailable)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67