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

goroutine 249 [running]:
panic(0x1335460, 0xc000556060)
	GOROOT/src/runtime/panic.go:1065 +0x565 fp=0xc000626b08 sp=0xc000626a40 pc=0x437c65
runtime.goPanicIndex(0x0, 0x0)
	GOROOT/src/runtime/panic.go:88 +0xa5 fp=0xc000626b50 sp=0xc000626b08 pc=0x434fc5
gvisor.dev/gvisor/pkg/tcpip/link/tun.(*Device).Write(0xc000a9c1e8, 0x2060c68, 0x0, 0x0, 0x0, 0x0, 0x0)
	pkg/tcpip/link/tun/device.go:260 +0x734 fp=0xc000626c38 sp=0xc000626b50 pc=0xc38d54
gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Write(0xc000a9c180, 0x15fb330, 0xc00063a440, 0x15f5760, 0xc000a2e000, 0x0, 0x1, 0x0, 0x0, 0x0, ...)
	pkg/sentry/devices/tundev/tundev.go:175 +0x1ac fp=0xc000626d08 sp=0xc000626c38 pc=0x102a4cc
gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).PWrite(0xc000a9c180, 0x15fb330, 0xc00063a440, 0x15f5760, 0xc000a2e000, 0x0, 0x1, 0x0, 0x0, 0x0, ...)
	pkg/sentry/devices/tundev/tundev.go:163 +0x95 fp=0xc000626d88 sp=0xc000626d08 pc=0x102a2d5
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).PWrite(0xc000a9c180, 0x15fb330, 0xc00063a440, 0x15f5760, 0xc000a2e000, 0x0, 0x1, 0x0, 0x0, 0x0, ...)
	pkg/sentry/vfs/file_description.go:731 +0xe2 fp=0xc000626e28 sp=0xc000626d88 pc=0x788b62
gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.getAIOCallback.func1(0x15fb330, 0xc00063a440)
	pkg/sentry/syscalls/linux/vfs2/aio.go:224 +0x591 fp=0xc000626fa0 sp=0xc000626e28 pc=0xf9b5b1
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).QueueAIO.func1(0xc000390380, 0x15fb330, 0xc00063a440, 0xc000372b8c)
	pkg/sentry/kernel/aio.go:33 +0x44 fp=0xc000626fc0 sp=0xc000626fa0 pc=0xaa2b04
runtime.goexit()
	src/runtime/asm_amd64.s:1371 +0x1 fp=0xc000626fc8 sp=0xc000626fc0 pc=0x472861
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).QueueAIO
	pkg/sentry/kernel/aio.go:31 +0xde