W0429 10:00:05.363141   45412 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:
I0429 10:00:05.403809    1265 x:0] ***************************
I0429 10:00:05.403934    1265 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]
I0429 10:00:05.404027    1265 x:0] Version release-20190304.1-154-g66bca6fc2213
I0429 10:00:05.404052    1265 x:0] PID: 1265
I0429 10:00:05.404072    1265 x:0] UID: 0, GID: 0
I0429 10:00:05.404090    1265 x:0] Configuration:
I0429 10:00:05.404113    1265 x:0] 		RootDir: /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root
I0429 10:00:05.404133    1265 x:0] 		Platform: ptrace
I0429 10:00:05.404156    1265 x:0] 		FileAccess: shared, overlay: false
I0429 10:00:05.404179    1265 x:0] 		Network: sandbox, logging: false
I0429 10:00:05.404221    1265 x:0] 		Strace: false, max size: 1024, syscalls: []
I0429 10:00:05.404249    1265 x:0] ***************************
D0429 10:00:05.404309    1265 x:0] Load container "/syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root" "ci-gvisor-ptrace-proxy-sandbox-race-0"
D0429 10:00:05.410258    1265 x:0] Signal container "ci-gvisor-ptrace-proxy-sandbox-race-0": signal 0
D0429 10:00:05.410353    1265 x:0] Signal sandbox "ci-gvisor-ptrace-proxy-sandbox-race-0"
D0429 10:00:05.410388    1265 x:0] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-0"
D0429 10:00:05.410761    1265 x:0] urpc: successfully marshalled 117 bytes.
I0429 10:00:05.422083    1265 x:0] Found sandbox "ci-gvisor-ptrace-proxy-sandbox-race-0", PID: 45077
I0429 10:00:05.422226    1265 x:0] Retrieving sandbox stacks
D0429 10:00:05.422271    1265 x:0] Stacks sandbox "ci-gvisor-ptrace-proxy-sandbox-race-0"
D0429 10:00:05.422337    1265 x:0] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-0"
W0429 10:00:05.430091    1265 x:0] FATAL ERROR: retrieving stacks: connecting to control server at PID 45077: connection refused
retrieving stacks: connecting to control server at PID 45077: connection refused