W0529 05:00:03.487127    6707 x:0] FATAL ERROR: waiting on pid 26: waiting on PID 26 in sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-0": urpc method "containerManager.WaitPID" failed: EOF
waiting on pid 26: waiting on PID 26 in sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-0": urpc method "containerManager.WaitPID" failed: EOF
DIAGNOSIS:
I0529 05:00:03.507786   31571 x:0] ***************************
I0529 05:00:03.507856   31571 x:0] Args: [/syzkaller/managers/kvm-proxy-overlay-sandbox/current/image -root /syzkaller/managers/kvm-proxy-overlay-sandbox/workdir/gvisor_root -watchdog-action=panic -network=none -debug -platform=kvm -file-access=exclusive -overlay -network=sandbox debug -stacks ci-gvisor-kvm-proxy-overlay-sandbox-0]
I0529 05:00:03.507871   31571 x:0] Version release-20190304.1-233-ged5793808e9d
I0529 05:00:03.507876   31571 x:0] PID: 31571
I0529 05:00:03.507884   31571 x:0] UID: 0, GID: 0
I0529 05:00:03.507887   31571 x:0] Configuration:
I0529 05:00:03.507890   31571 x:0] 		RootDir: /syzkaller/managers/kvm-proxy-overlay-sandbox/workdir/gvisor_root
I0529 05:00:03.507900   31571 x:0] 		Platform: kvm
I0529 05:00:03.507906   31571 x:0] 		FileAccess: exclusive, overlay: true
I0529 05:00:03.507917   31571 x:0] 		Network: sandbox, logging: false
I0529 05:00:03.507924   31571 x:0] 		Strace: false, max size: 1024, syscalls: []
I0529 05:00:03.507928   31571 x:0] ***************************
D0529 05:00:03.507945   31571 x:0] Load container "/syzkaller/managers/kvm-proxy-overlay-sandbox/workdir/gvisor_root" "ci-gvisor-kvm-proxy-overlay-sandbox-0"
D0529 05:00:03.509549   31571 x:0] Signal container "ci-gvisor-kvm-proxy-overlay-sandbox-0": signal 0
D0529 05:00:03.509633   31571 x:0] Signal sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-0"
D0529 05:00:03.509670   31571 x:0] Connecting to sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-0"
D0529 05:00:03.509839   31571 x:0] urpc: successfully marshalled 117 bytes.
I0529 05:00:03.544577   31571 x:0] Found sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-0", PID: 1560
I0529 05:00:03.544613   31571 x:0] Retrieving sandbox stacks
D0529 05:00:03.544617   31571 x:0] Stacks sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-0"
D0529 05:00:03.544622   31571 x:0] Connecting to sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-0"
W0529 05:00:03.544656   31571 x:0] FATAL ERROR: retrieving stacks: connecting to control server at PID 1560: connection refused
retrieving stacks: connecting to control server at PID 1560: connection refused