panic: runtime error: index out of range [0] with length 0 goroutine 10498 [running]: panic(0x1a069e0, 0xc0009ac420) GOROOT/src/runtime/panic.go:1065 +0x565 fp=0xc001a2d8b8 sp=0xc001a2d7f0 pc=0x43a6c5 runtime.goPanicIndex(0x0, 0x0) GOROOT/src/runtime/panic.go:88 +0xa5 fp=0xc001a2d900 sp=0xc001a2d8b8 pc=0x437a25 gvisor.dev/gvisor/pkg/tcpip/link/tun.(*Device).Write(0xc0003ff1a8, 0x31584d8, 0x0, 0x0, 0x0, 0x0, 0x0) pkg/tcpip/link/tun/device.go:214 +0x89d fp=0xc001a2da80 sp=0xc001a2d900 pc=0xfd22bd gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Write(0xc0003ff140, 0x1dc0090, 0xc000245800, 0x1dba1a0, 0xc001ead000, 0x0, 0x1, 0x0, 0x0, 0x0, ...) pkg/sentry/devices/tundev/tundev.go:146 +0x237 fp=0xc001a2dba8 sp=0xc001a2da80 pc=0x1576977 gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).PWrite(0xc0003ff140, 0x1dc0090, 0xc000245800, 0x1dba1a0, 0xc001ead000, 0x0, 0x1, 0x0, 0x0, 0x0, ...) pkg/sentry/devices/tundev/tundev.go:137 +0xef fp=0xc001a2dc78 sp=0xc001a2dba8 pc=0x15766cf gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).PWrite(0xc0003ff140, 0x1dc0090, 0xc000245800, 0x1dba1a0, 0xc001ead000, 0x0, 0x1, 0x0, 0x0, 0x0, ...) pkg/sentry/vfs/file_description.go:645 +0x15a fp=0xc001a2dd60 sp=0xc001a2dc78 pc=0x96163a gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.getAIOCallback.func1(0x1dc0090, 0xc000245800) pkg/sentry/syscalls/linux/vfs2/aio.go:174 +0x5ae fp=0xc001a2dfa0 sp=0xc001a2dd60 pc=0x1498a6e gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).QueueAIO.func1(0xc000b22b60, 0x1dc0090, 0xc000245800, 0xc00016c34c) pkg/sentry/kernel/aio.go:30 +0x48 fp=0xc001a2dfc0 sp=0xc001a2dfa0 pc=0xdb4ca8 runtime.goexit() src/runtime/asm_amd64.s:1371 +0x1 fp=0xc001a2dfc8 sp=0xc001a2dfc0 pc=0x477541 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).QueueAIO pkg/sentry/kernel/aio.go:29 +0x14c