fatal error: invalid g status
DIAGNOSIS:
I0308 07:14:51.683049   28751 main.go:305] ***************************
I0308 07:14:51.683100   28751 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-3]
I0308 07:14:51.683152   28751 main.go:307] Version release-20200219.0-105-gb1576e533223
I0308 07:14:51.683186   28751 main.go:308] PID: 28751
I0308 07:14:51.683221   28751 main.go:309] UID: 0, GID: 0
I0308 07:14:51.683249   28751 main.go:310] Configuration:
I0308 07:14:51.683276   28751 main.go:311] 		RootDir: /syzkaller/managers/main/workdir/gvisor_root
I0308 07:14:51.683315   28751 main.go:312] 		Platform: ptrace
I0308 07:14:51.683340   28751 main.go:313] 		FileAccess: shared, overlay: false
I0308 07:14:51.683367   28751 main.go:314] 		Network: none, logging: false
I0308 07:14:51.683388   28751 main.go:315] 		Strace: false, max size: 1024, syscalls: []
I0308 07:14:51.683433   28751 main.go:316] ***************************
D0308 07:14:51.683561   28751 container.go:159] Load container "/syzkaller/managers/main/workdir/gvisor_root" "ci-gvisor-main-3"
D0308 07:14:51.685193   28751 container.go:592] Signal container "ci-gvisor-main-3": signal 0
D0308 07:14:51.685236   28751 sandbox.go:806] Signal sandbox "ci-gvisor-main-3"
D0308 07:14:51.685253   28751 sandbox.go:318] Connecting to sandbox "ci-gvisor-main-3"
D0308 07:14:51.685370   28751 urpc.go:534] urpc: successfully marshalled 96 bytes.
I0308 07:14:51.841282   28751 debug.go:122] Found sandbox "ci-gvisor-main-3", PID: 13399
I0308 07:14:51.841312   28751 debug.go:131] Retrieving sandbox stacks
D0308 07:14:51.841331   28751 sandbox.go:924] Stacks sandbox "ci-gvisor-main-3"
D0308 07:14:51.841342   28751 sandbox.go:318] Connecting to sandbox "ci-gvisor-main-3"
W0308 07:14:51.841392   28751 error.go:48] FATAL ERROR: retrieving stacks: connecting to control server at PID 13399: connection refused
retrieving stacks: connecting to control server at PID 13399: connection refused
W0308 07:14:51.841535   28751 main.go:338] Failure to execute command, err: 1