panic: runtime error: makeslice: len out of range

DIAGNOSIS:
I0315 15:44:58.442074   50188 main.go:305] ***************************
I0315 15:44:58.442130   50188 main.go:306] Args: [/syzkaller/managers/main/current/image -root /syzkaller/managers/main/workdir/gvisor_root -watchdog-action=panic -network=none -debug -alsologtostderr -platform=ptrace -file-access=shared -network=none debug -stacks --ps ci-gvisor-main-0]
I0315 15:44:58.442167   50188 main.go:307] Version release-20200219.0-178-g97127750289b
I0315 15:44:58.442188   50188 main.go:308] PID: 50188
I0315 15:44:58.442212   50188 main.go:309] UID: 0, GID: 0
I0315 15:44:58.442235   50188 main.go:310] Configuration:
I0315 15:44:58.442256   50188 main.go:311] 		RootDir: /syzkaller/managers/main/workdir/gvisor_root
I0315 15:44:58.442282   50188 main.go:312] 		Platform: ptrace
I0315 15:44:58.442301   50188 main.go:313] 		FileAccess: shared, overlay: false
I0315 15:44:58.442331   50188 main.go:314] 		Network: none, logging: false
I0315 15:44:58.442353   50188 main.go:315] 		Strace: false, max size: 1024, syscalls: []
I0315 15:44:58.442374   50188 main.go:316] ***************************
D0315 15:44:58.442439   50188 container.go:159] Load container "/syzkaller/managers/main/workdir/gvisor_root" "ci-gvisor-main-0"
D0315 15:44:58.444506   50188 container.go:592] Signal container "ci-gvisor-main-0": signal 0
D0315 15:44:58.444561   50188 sandbox.go:814] Signal sandbox "ci-gvisor-main-0"
D0315 15:44:58.444573   50188 sandbox.go:318] Connecting to sandbox "ci-gvisor-main-0"
D0315 15:44:58.445054   50188 urpc.go:534] urpc: successfully marshalled 96 bytes.
I0315 15:44:59.325519   50188 debug.go:128] Found sandbox "ci-gvisor-main-0", PID: 43491
I0315 15:44:59.325561   50188 debug.go:137] Retrieving sandbox stacks
D0315 15:44:59.325587   50188 sandbox.go:932] Stacks sandbox "ci-gvisor-main-0"
D0315 15:44:59.325610   50188 sandbox.go:318] Connecting to sandbox "ci-gvisor-main-0"
W0315 15:44:59.325668   50188 error.go:48] FATAL ERROR: retrieving stacks: connecting to control server at PID 43491: connection refused
retrieving stacks: connecting to control server at PID 43491: connection refused
W0315 15:44:59.325825   50188 main.go:338] Failure to execute command, err: 1