panic: interface conversion: vfs.DentryImpl is *vfs.anonDentry, not *kernfs.Dentry

goroutine 325 [running]:
panic({0x106ef60, 0xc0008843f0})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc00062f380 sp=0xc00062f2c0 pc=0x43781a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0xc0005e7878?, 0x11bd9c0, 0x10bb5a0)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc00062f3a8 sp=0xc00062f380 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc00060c140, {0x1451b58, 0xc0009b8000}, 0xc0002c0d80, {0xc0001bc100?, 0xc00074c0f0?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x825 fp=0xc00062f5d8 sp=0xc00062f3a8 pc=0x7a1065
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc0004c8100?, {0x1451b58, 0xc0009b8000}, 0xc0004e43f0?, 0xc0001ec600?, 0xc00062f788)
	pkg/sentry/vfs/vfs.go:296 +0x18f fp=0xc00062f658 sp=0xc00062f5d8 pc=0x74954f
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc0009b8000, 0x62f878?, 0xa45c68?, 0x9b8000?, 0x400000002?, 0x1400)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x359 fp=0xc00062f848 sp=0xc00062f658 pc=0xa48e79
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0xc0005e7878?, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x32 fp=0xc00062f888 sp=0xc00062f848 pc=0xa48af2
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0009b8000, 0x109, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x755 fp=0xc00062fc78 sp=0xc00062f888 pc=0x9271f5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0009b8000, 0xc00099e0d8?, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x4a fp=0xc00062fcd8 sp=0xc00062fc78 pc=0x92842a
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x0?, 0xc0004b8000?, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x65 fp=0xc00062fd38 sp=0xc00062fcd8 pc=0x928105
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0009ba000?)
	pkg/sentry/kernel/task_syscall.go:257 +0x2f0 fp=0xc00062fe30 sp=0xc00062fd38 pc=0x927e70
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0004c8180?, 0xc0009b8000)
	pkg/sentry/kernel/task_run.go:259 +0xf3e fp=0xc00062ff60 sp=0xc00062fe30 pc=0x91c0be
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0009b8000, 0x10)
	pkg/sentry/kernel/task_run.go:94 +0x1bc fp=0xc00062ffc0 sp=0xc00062ff60 pc=0x91ab3c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc00062ffe0 sp=0xc00062ffc0 pc=0x9259ea
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc00062ffe8 sp=0xc00062ffe0 pc=0x46c701
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0xef