W0501 07:05:37.943635   31979 x:0] FATAL ERROR: waiting on pid 18: waiting on PID 18 in sandbox "ci-gvisor-ptrace-proxy-sandbox-race-0": urpc method "containerManager.WaitPID" failed: EOF
waiting on pid 18: waiting on PID 18 in sandbox "ci-gvisor-ptrace-proxy-sandbox-race-0": urpc method "containerManager.WaitPID" failed: EOF
DIAGNOSIS:
I0501 07:05:37.995790   32832 x:0] ***************************
I0501 07:05:37.996040   32832 x:0] Args: [/syzkaller/managers/ptrace-proxy-sandbox-race/current/image -root /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root -watchdog-action=panic -network=none -debug -platform=ptrace -file-access=shared -network=sandbox debug -stacks ci-gvisor-ptrace-proxy-sandbox-race-0]
I0501 07:05:37.996169   32832 x:0] Version release-20190304.1-163-g8bfb83d0acde
I0501 07:05:37.996209   32832 x:0] PID: 32832
I0501 07:05:37.996235   32832 x:0] UID: 0, GID: 0
I0501 07:05:37.996268   32832 x:0] Configuration:
I0501 07:05:37.996281   32832 x:0] 		RootDir: /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root
I0501 07:05:37.996301   32832 x:0] 		Platform: ptrace
I0501 07:05:37.996330   32832 x:0] 		FileAccess: shared, overlay: false
I0501 07:05:37.996367   32832 x:0] 		Network: sandbox, logging: false
I0501 07:05:37.996437   32832 x:0] 		Strace: false, max size: 1024, syscalls: []
I0501 07:05:37.996490   32832 x:0] ***************************
D0501 07:05:37.996580   32832 x:0] Load container "/syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root" "ci-gvisor-ptrace-proxy-sandbox-race-0"
D0501 07:05:38.004516   32832 x:0] Signal container "ci-gvisor-ptrace-proxy-sandbox-race-0": signal 0
D0501 07:05:38.004590   32832 x:0] Signal sandbox "ci-gvisor-ptrace-proxy-sandbox-race-0"
D0501 07:05:38.004622   32832 x:0] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-0"
I0501 07:05:38.004760   32832 x:0] Found sandbox "ci-gvisor-ptrace-proxy-sandbox-race-0", PID: 31636
I0501 07:05:38.004812   32832 x:0] Retrieving sandbox stacks
D0501 07:05:38.004840   32832 x:0] Stacks sandbox "ci-gvisor-ptrace-proxy-sandbox-race-0"
D0501 07:05:38.004883   32832 x:0] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-0"
W0501 07:05:38.004957   32832 x:0] FATAL ERROR: retrieving stacks: connecting to control server at PID 31636: connection refused
retrieving stacks: connecting to control server at PID 31636: connection refused