panic: runtime error: slice bounds out of range [:17] with capacity 16

goroutine 181 [running]:
gvisor.dev/gvisor/pkg/sentry/socket/control.Parse(0xc00062ca80, 0x1260060, 0xc00048a8c0, 0xc0000d1130, 0x10, 0x10, 0x0, 0x0, 0x0, 0x0, ...)
	pkg/sentry/socket/control/control.go:475 +0x13ed
DIAGNOSIS:
I0102 17:34:12.547356   38335 x:0] ***************************
I0102 17:34:12.547411   38335 x:0] Args: [/syzkaller/managers/ptrace-direct-overlay-host-race/current/image -root /syzkaller/managers/ptrace-direct-overlay-host-race/workdir/gvisor_root -watchdog-action=panic -network=none -debug -alsologtostderr -platform=ptrace -file-access=exclusive -overlay -network=host -TESTONLY-unsafe-nonroot debug -stacks --ps ci-gvisor-ptrace-direct-overlay-host-race-2]
I0102 17:34:12.547504   38335 x:0] Version release-20191213.0-56-g1f384ac42b9e
I0102 17:34:12.547545   38335 x:0] PID: 38335
I0102 17:34:12.547584   38335 x:0] UID: 0, GID: 0
I0102 17:34:12.547624   38335 x:0] Configuration:
I0102 17:34:12.547644   38335 x:0] 		RootDir: /syzkaller/managers/ptrace-direct-overlay-host-race/workdir/gvisor_root
I0102 17:34:12.547674   38335 x:0] 		Platform: ptrace
I0102 17:34:12.547701   38335 x:0] 		FileAccess: exclusive, overlay: true
I0102 17:34:12.547742   38335 x:0] 		Network: host, logging: false
I0102 17:34:12.547782   38335 x:0] 		Strace: false, max size: 1024, syscalls: []
I0102 17:34:12.547816   38335 x:0] ***************************
W0102 17:34:12.547847   38335 x:0] Block the TERM signal. This is only safe in tests!
D0102 17:34:12.547951   38335 x:0] Load container "/syzkaller/managers/ptrace-direct-overlay-host-race/workdir/gvisor_root" "ci-gvisor-ptrace-direct-overlay-host-race-2"
D0102 17:34:12.553830   38335 x:0] Signal container "ci-gvisor-ptrace-direct-overlay-host-race-2": signal 0
D0102 17:34:12.553934   38335 x:0] Signal sandbox "ci-gvisor-ptrace-direct-overlay-host-race-2"
D0102 17:34:12.554006   38335 x:0] Connecting to sandbox "ci-gvisor-ptrace-direct-overlay-host-race-2"
D0102 17:34:12.554311   38335 x:0] urpc: successfully marshalled 123 bytes.
I0102 17:34:12.627573   38335 x:0] Found sandbox "ci-gvisor-ptrace-direct-overlay-host-race-2", PID: 32689
I0102 17:34:12.627653   38335 x:0] Retrieving sandbox stacks
D0102 17:34:12.627695   38335 x:0] Stacks sandbox "ci-gvisor-ptrace-direct-overlay-host-race-2"
D0102 17:34:12.627779   38335 x:0] Connecting to sandbox "ci-gvisor-ptrace-direct-overlay-host-race-2"
W0102 17:34:12.627868   38335 x:0] FATAL ERROR: retrieving stacks: connecting to control server at PID 32689: connection refused
retrieving stacks: connecting to control server at PID 32689: connection refused
W0102 17:34:12.628067   38335 x:0] Failure to execute command, err: 1