fatal error: I0229 00:13:18.978566   47185 compat.go:129] Uncaught signal: "killed" (9), PID: 4199, TID: 4207, fault addr: 0x0
fault
D0229 00:13:18.978611   47185 task_exit.go:221] [ 4207] Transitioning from exit state TaskExitNone to TaskExitInitiated
DIAGNOSIS:
I0229 00:13:19.239766   54831 main.go:305] ***************************
I0229 00:13:19.239843   54831 main.go:306] Args: [/syzkaller/managers/ptrace-direct-overlay-host/current/image -root /syzkaller/managers/ptrace-direct-overlay-host/workdir/gvisor_root -watchdog-action=panic -network=none -debug -alsologtostderr -platform=ptrace -file-access=shared -network=host debug -stacks --ps ci-gvisor-ptrace-direct-overlay-host-0]
I0229 00:13:19.239939   54831 main.go:307] Version release-20200219.0-72-gce4d1e45bb88
I0229 00:13:19.239967   54831 main.go:308] PID: 54831
I0229 00:13:19.240005   54831 main.go:309] UID: 0, GID: 0
I0229 00:13:19.240043   54831 main.go:310] Configuration:
I0229 00:13:19.240066   54831 main.go:311] 		RootDir: /syzkaller/managers/ptrace-direct-overlay-host/workdir/gvisor_root
I0229 00:13:19.240083   54831 main.go:312] 		Platform: ptrace
I0229 00:13:19.240104   54831 main.go:313] 		FileAccess: shared, overlay: false
I0229 00:13:19.240131   54831 main.go:314] 		Network: host, logging: false
I0229 00:13:19.240151   54831 main.go:315] 		Strace: false, max size: 1024, syscalls: []
I0229 00:13:19.240171   54831 main.go:316] ***************************
D0229 00:13:19.242918   54831 container.go:159] Load container "/syzkaller/managers/ptrace-direct-overlay-host/workdir/gvisor_root" "ci-gvisor-ptrace-direct-overlay-host-0"
D0229 00:13:19.269410   54831 container.go:592] Signal container "ci-gvisor-ptrace-direct-overlay-host-0": signal 0
D0229 00:13:19.269729   54831 sandbox.go:806] Signal sandbox "ci-gvisor-ptrace-direct-overlay-host-0"
D0229 00:13:19.269751   54831 sandbox.go:318] Connecting to sandbox "ci-gvisor-ptrace-direct-overlay-host-0"
D0229 00:13:19.269986   54831 urpc.go:534] urpc: successfully marshalled 118 bytes.
I0229 00:13:19.498889   54831 debug.go:122] Found sandbox "ci-gvisor-ptrace-direct-overlay-host-0", PID: 47185
I0229 00:13:19.498959   54831 debug.go:131] Retrieving sandbox stacks
D0229 00:13:19.498996   54831 sandbox.go:924] Stacks sandbox "ci-gvisor-ptrace-direct-overlay-host-0"
D0229 00:13:19.499008   54831 sandbox.go:318] Connecting to sandbox "ci-gvisor-ptrace-direct-overlay-host-0"
W0229 00:13:19.499044   54831 error.go:48] FATAL ERROR: retrieving stacks: connecting to control server at PID 47185: connection refused
retrieving stacks: connecting to control server at PID 47185: connection refused
W0229 00:13:19.499223   54831 main.go:338] Failure to execute command, err: 1