panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x10 pc=0x78bee4]

goroutine 325663 [running]:
panic({0xd5ea40, 0x1d6cdf0})
	GOROOT/src/runtime/panic.go:987 +0x3ac fp=0x4001d0ec20 sp=0x4001d0eb60 pc=0x4518c
runtime.panicmem()
	GOROOT/src/runtime/panic.go:260 +0x48 fp=0x4001d0ec40 sp=0x4001d0ec20 pc=0x43b08
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:837 +0x214 fp=0x4001d0ec80 sp=0x4001d0ec40 pc=0x5c8d4
gvisor.dev/gvisor/pkg/sentry/inet.(*Namespace).Stack(...)
	pkg/sentry/inet/namespace.go:108
gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*filesystem).newTaskNetDir(0x400df501e0, {0x11b3e40, 0x40023dca80}, 0x400a3fe000)
	pkg/sentry/fsimpl/proc/task_net.go:46 +0x104 fp=0x4001d0eda0 sp=0x4001d0ec90 pc=0x78bee4
gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*filesystem).newTaskInode(0x400df501e0, {0x11b3e40, 0x40023dca80}, 0x400a3fe000, 0x4000906af0, 0x1, 0x0)
	pkg/sentry/fsimpl/proc/task.go:73 +0xddc fp=0x4001d0f030 sp=0x4001d0eda0 pc=0x77fc0c
gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*tasksInode).Lookup(0x400b7fa000, {0x11b3e40, 0x40023dca80}, {0x400d482a10, 0x5})
	pkg/sentry/fsimpl/proc/tasks.go:130 +0x220 fp=0x4001d0f0e0 sp=0x4001d0f030 pc=0x7911f0
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).revalidateChildLocked(0x400eebe480?, {0x11b3e40?, 0x40023dca80?}, 0x5?, 0x4009d7fa70, {0x400d482a10, 0x5}, 0x4009d7f9e0?)
	pkg/sentry/fsimpl/kernfs/filesystem.go:131 +0x150 fp=0x4001d0f160 sp=0x4001d0f0e0 pc=0x3d4280
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).stepExistingLocked(0x4001d0f360?, {0x11b3e40, 0x40023dca80}, 0x400eebe480, 0x4009d7fa70)
	pkg/sentry/fsimpl/kernfs/filesystem.go:75 +0x2d0 fp=0x4001d0f210 sp=0x4001d0f160 pc=0x3d3de0
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).walkExistingLocked(0x4001d0f2f8?, {0x11b3e40, 0x40023dca80}, 0x400eebe480)
	pkg/sentry/fsimpl/kernfs/filesystem.go:163 +0xb4 fp=0x4001d0f250 sp=0x4001d0f210 pc=0x3d44a4
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).OpenAt(0x400df501e0, {0x11b3e40, 0x40023dca80}, 0x400eebe480, {0x20002, 0x0, 0x0})
	pkg/sentry/fsimpl/kernfs/filesystem.go:486 +0x41c fp=0x4001d0f4c0 sp=0x4001d0f250 pc=0x3d767c
gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*filesystem).OpenAt(0x4000684200?, {0x11b3e40?, 0x40023dca80?}, 0x400eebe480?, {0x1dd1f98?, 0x0?, 0x0?})
	<autogenerated>:1 +0x30 fp=0x4001d0f500 sp=0x4001d0f4c0 pc=0x7a7ed0
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).OpenAt(0x4032d62780?, {0x11b3e40, 0x40023dca80}, 0x400e0089c0?, 0x4001d0f7d8, 0x4001d0f770)
	pkg/sentry/vfs/vfs.go:460 +0x2ac fp=0x4001d0f720 sp=0x4001d0f500 pc=0x36cdac
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.openat(0x40023dca80, 0x0?, 0x29322?, 0x2, 0x0)
	pkg/sentry/syscalls/linux/sys_file.go:112 +0x1c4 fp=0x4001d0f890 sp=0x4001d0f720 pc=0x6bcf64
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Openat(0x40023dca80?, 0x0?, {{0xffffffffffffff9c}, {0xf457e93e69f0}, {0x2}, {0x0}, {0x0}, {0x8080800000000000}})
	pkg/sentry/syscalls/linux/sys_file.go:91 +0x5c fp=0x4001d0f8d0 sp=0x4001d0f890 pc=0x6bccec
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0x40023dca80, 0x38, {{0xffffffffffffff9c}, {0xf457e93e69f0}, {0x2}, {0x0}, {0x0}, {0x8080800000000000}})
	pkg/sentry/kernel/task_syscall.go:142 +0x678 fp=0x4001d0fc10 sp=0x4001d0f8d0 pc=0x5825d8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0x40023dca80, 0x0?, {{0xffffffffffffff9c}, {0xf457e93e69f0}, {0x2}, {0x0}, {0x0}, {0x8080800000000000}})
	pkg/sentry/kernel/task_syscall.go:322 +0x48 fp=0x4001d0fc70 sp=0x4001d0fc10 pc=0x5838b8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x4001d0fd28?, 0x53ef58?, {{0xffffffffffffff9c}, {0xf457e93e69f0}, {0x2}, {0x0}, {0x0}, {0x8080800000000000}})
	pkg/sentry/kernel/task_syscall.go:282 +0x7c fp=0x4001d0fcd0 sp=0x4001d0fc70 pc=0x5834bc
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0x40047c8f70?)
	pkg/sentry/kernel/task_syscall.go:257 +0x330 fp=0x4001d0fdd0 sp=0x4001d0fcd0 pc=0x5831e0
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x400f533980?, 0x40023dca80)
	pkg/sentry/kernel/task_run.go:269 +0x116c fp=0x4001d0ff20 sp=0x4001d0fdd0 pc=0x57638c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0x40023dca80, 0x3ab7)
	pkg/sentry/kernel/task_run.go:98 +0x250 fp=0x4001d0ffb0 sp=0x4001d0ff20 pc=0x574b80
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:389 +0x2c fp=0x4001d0ffd0 sp=0x4001d0ffb0 pc=0x580d0c
runtime.goexit()
	src/runtime/asm_arm64.s:1172 +0x4 fp=0x4001d0ffd0 sp=0x4001d0ffd0 pc=0x7a5b4
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:389 +0xf8