panic: runtime error: index out of range [1] with length 0

goroutine 199936 [running]:
encoding/binary.littleEndian.Uint16(...)
	GOROOT/src/encoding/binary/binary.go:53
gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*SocketOperations).Bind(0xc001e9a3c0, 0xc000aa2a80, 0x25433b8, 0x0, 0x0, 0x0)
	pkg/sentry/socket/netstack/netstack.go:715 +0x5d0
DIAGNOSIS:
I0305 05:01:21.542008   20713 main.go:305] ***************************
I0305 05:01:21.542161   20713 main.go:306] Args: [/syzkaller/managers/ptrace-proxy-sandbox-race/current/image -root /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root -watchdog-action=panic -network=none -debug -alsologtostderr -platform=ptrace -file-access=shared -network=sandbox -TESTONLY-unsafe-nonroot debug -stacks --ps ci-gvisor-ptrace-proxy-sandbox-race-3]
I0305 05:01:21.542347   20713 main.go:307] Version release-20200219.0-72-gce4d1e45bb88
I0305 05:01:21.542457   20713 main.go:308] PID: 20713
I0305 05:01:21.542565   20713 main.go:309] UID: 0, GID: 0
I0305 05:01:21.542675   20713 main.go:310] Configuration:
I0305 05:01:21.542780   20713 main.go:311] 		RootDir: /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root
I0305 05:01:21.542878   20713 main.go:312] 		Platform: ptrace
I0305 05:01:21.542973   20713 main.go:313] 		FileAccess: shared, overlay: false
I0305 05:01:21.543120   20713 main.go:314] 		Network: sandbox, logging: false
I0305 05:01:21.543249   20713 main.go:315] 		Strace: false, max size: 1024, syscalls: []
I0305 05:01:21.543322   20713 main.go:316] ***************************
W0305 05:01:21.543382   20713 main.go:321] Block the TERM signal. This is only safe in tests!
D0305 05:01:21.543542   20713 container.go:159] Load container "/syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root" "ci-gvisor-ptrace-proxy-sandbox-race-3"
D0305 05:01:21.550185   20713 container.go:592] Signal container "ci-gvisor-ptrace-proxy-sandbox-race-3": signal 0
D0305 05:01:21.550350   20713 sandbox.go:806] Signal sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3"
D0305 05:01:21.550507   20713 sandbox.go:318] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3"
D0305 05:01:21.551110   20713 urpc.go:534] urpc: successfully marshalled 117 bytes.
I0305 05:01:22.075135   20713 debug.go:122] Found sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3", PID: 18981
I0305 05:01:22.075294   20713 debug.go:131] Retrieving sandbox stacks
D0305 05:01:22.075363   20713 sandbox.go:924] Stacks sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3"
D0305 05:01:22.075467   20713 sandbox.go:318] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3"
W0305 05:01:22.075599   20713 error.go:48] FATAL ERROR: retrieving stacks: connecting to control server at PID 18981: connection refused
retrieving stacks: connecting to control server at PID 18981: connection refused
W0305 05:01:22.075940   20713 main.go:338] Failure to execute command, err: 1