W0429 09:56:56.463978   17398 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 09:56:56.539446   55750 x:0] ***************************
I0429 09:56:56.539596   55750 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 09:56:56.539676   55750 x:0] Version release-20190304.1-154-g66bca6fc2213
I0429 09:56:56.539710   55750 x:0] PID: 55750
I0429 09:56:56.539726   55750 x:0] UID: 0, GID: 0
I0429 09:56:56.539755   55750 x:0] Configuration:
I0429 09:56:56.539767   55750 x:0] 		RootDir: /syzkaller/managers/kvm-direct-overlay-host-race/workdir/gvisor_root
I0429 09:56:56.539786   55750 x:0] 		Platform: ptrace
I0429 09:56:56.539812   55750 x:0] 		FileAccess: exclusive, overlay: true
I0429 09:56:56.539844   55750 x:0] 		Network: host, logging: false
I0429 09:56:56.539861   55750 x:0] 		Strace: false, max size: 1024, syscalls: []
I0429 09:56:56.539883   55750 x:0] ***************************
D0429 09:56:56.539932   55750 x:0] Load container "/syzkaller/managers/kvm-direct-overlay-host-race/workdir/gvisor_root" "ci-gvisor-kvm-direct-overlay-host-race-0"
D0429 09:56:56.548318   55750 x:0] Signal container "ci-gvisor-kvm-direct-overlay-host-race-0": signal 0
D0429 09:56:56.548403   55750 x:0] Signal sandbox "ci-gvisor-kvm-direct-overlay-host-race-0"
D0429 09:56:56.548436   55750 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-overlay-host-race-0"
I0429 09:56:56.548614   55750 x:0] Found sandbox "ci-gvisor-kvm-direct-overlay-host-race-0", PID: 16865
I0429 09:56:56.548663   55750 x:0] Retrieving sandbox stacks
D0429 09:56:56.548680   55750 x:0] Stacks sandbox "ci-gvisor-kvm-direct-overlay-host-race-0"
D0429 09:56:56.548720   55750 x:0] Connecting to sandbox "ci-gvisor-kvm-direct-overlay-host-race-0"
W0429 09:56:56.548782   55750 x:0] FATAL ERROR: retrieving stacks: connecting to control server at PID 16865: connection refused
retrieving stacks: connecting to control server at PID 16865: connection refused