W0421 23:29:49.096361   42375 x:0] FATAL ERROR: waiting on pid 25: waiting on PID 25 in sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-2": urpc method "containerManager.WaitPID" failed: EOF
waiting on pid 25: waiting on PID 25 in sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-2": urpc method "containerManager.WaitPID" failed: EOF
DIAGNOSIS:
I0421 23:29:49.125656   19966 x:0] ***************************
I0421 23:29:49.125732   19966 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-2]
I0421 23:29:49.125760   19966 x:0] Version release-20190304.1-129-g358eb52a76eb
I0421 23:29:49.125767   19966 x:0] PID: 19966
I0421 23:29:49.125795   19966 x:0] UID: 0, GID: 0
I0421 23:29:49.125807   19966 x:0] Configuration:
I0421 23:29:49.125812   19966 x:0] 		RootDir: /syzkaller/managers/kvm-proxy-overlay-sandbox/workdir/gvisor_root
I0421 23:29:49.125816   19966 x:0] 		Platform: kvm
I0421 23:29:49.125832   19966 x:0] 		FileAccess: exclusive, overlay: true
I0421 23:29:49.125838   19966 x:0] 		Network: sandbox, logging: false
I0421 23:29:49.125851   19966 x:0] 		Strace: false, max size: 1024, syscalls: []
I0421 23:29:49.125856   19966 x:0] ***************************
D0421 23:29:49.126101   19966 x:0] Load container "/syzkaller/managers/kvm-proxy-overlay-sandbox/workdir/gvisor_root" "ci-gvisor-kvm-proxy-overlay-sandbox-2"
D0421 23:29:49.128519   19966 x:0] Signal container "ci-gvisor-kvm-proxy-overlay-sandbox-2": signal 0
D0421 23:29:49.128551   19966 x:0] Signal sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-2"
D0421 23:29:49.128558   19966 x:0] Connecting to sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-2"
D0421 23:29:49.129019   19966 x:0] urpc: successfully marshalled 117 bytes.
I0421 23:29:49.162477   19966 x:0] Found sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-2", PID: 35896
I0421 23:29:49.162502   19966 x:0] Retrieving sandbox stacks
D0421 23:29:49.162507   19966 x:0] Stacks sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-2"
D0421 23:29:49.162538   19966 x:0] Connecting to sandbox "ci-gvisor-kvm-proxy-overlay-sandbox-2"
W0421 23:29:49.162584   19966 x:0] FATAL ERROR: retrieving stacks: connecting to control server at PID 35896: connection refused
retrieving stacks: connecting to control server at PID 35896: connection refused