W0429 14:06:56.504137   55303 x:0] FATAL ERROR: waiting on pid 18: waiting on PID 18 in sandbox "ci-gvisor-kvm-direct-overlay-host-race-0": urpc method "containerManager.WaitPID" failed: EOF
DIAGNOSIS:
I0429 14:06:56.573670   41928 x:0] ***************************
I0429 14:06:56.573861   41928 x:0] Args: [/syzkaller/managers/kvm-direct-overlay-host-race/current/image -root /syzkaller/managers/kvm-direct-overlay-host-race/workdir/gvisor_root -watchdog-action=panic -network=none -debug -platform=ptrace -file-access=exclusive -overlay -network=host debug -stacks ci-gvisor-kvm-direct-overlay-host-race-0]
I0429 14:06:56.573952   41928 x:0] Version release-20190304.1-154-g66bca6fc2213
I0429 14:06:56.573994   41928 x:0] PID: 41928
I0429 14:06:56.574057   41928 x:0] UID: 0, GID: 0
I0429 14:06:56.574099   41928 x:0] Configuration:
I0429 14:06:56.574112   41928 x:0] 		RootDir: /syzkaller/managers/kvm-direct-overlay-host-race/workdir/gvisor_root
I0429 14:06:56.574140   41928 x:0] 		Platform: ptrace
I0429 14:06:56.574164   41928 x:0] 		FileAccess: exclusive, overlay: true
I0429 14:06:56.574187   41928 x:0] 		Network: host, logging: false
I0429 14:06:56.574204   41928 x:0] 		Strace: false, max size: 1024, syscalls: []
I0429 14:06:56.574255   41928 x:0] ***************************
D0429 14:06:56.574375   41928 x:0] Load container "/syzkaller/managers/kvm-direct-overlay-host-race/workdir/gvisor_root" "ci-gvisor-kvm-direct-overlay-host-race-0"
D0429 14:06:56.587857   41928 x:0] Signal container "ci-gvisor-kvm-direct-overlay-host-race-0": signal 0
D0429 14:06:56.588005   41928 x:0] Signal sandbox "ci-gvisor-kvm-direct-overlay-host-race-0"
D0429 14:06:56.588220   41928 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-overlay-host-race-0"
I0429 14:06:56.588397   41928 x:0] Found sandbox "ci-gvisor-kvm-direct-overlay-host-race-0", PID: 54851
I0429 14:06:56.588458   41928 x:0] Retrieving sandbox stacks
D0429 14:06:56.588760   41928 x:0] Stacks sandbox "ci-gvisor-kvm-direct-overlay-host-race-0"
D0429 14:06:56.588837   41928 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-overlay-host-race-0"
W0429 14:06:56.590079   41928 x:0] FATAL ERROR: retrieving stacks: connecting to control server at PID 54851: connection refused
retrieving stacks: connecting to control server at PID 54851: connection refused