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

goroutine 72 [running]:
panic({0x106e9a0, 0xc000434b70})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc000699380 sp=0xc0006992c0 pc=0x43781a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0xc000a89878?, 0x11bd180, 0x10baf40)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc0006993a8 sp=0xc000699380 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc000436320, {0x1450a98, 0xc000542a80}, 0xc000384d80, {0xc0001bd380?, 0xc000a800a0?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x825 fp=0xc0006995d8 sp=0xc0006993a8 pc=0x7a0fe5
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc0005bc100?, {0x1450a98, 0xc000542a80}, 0xc0004601b0?, 0xc00056c700?, 0xc000699788)
	pkg/sentry/vfs/vfs.go:296 +0x18f fp=0xc000699658 sp=0xc0006995d8 pc=0x7494cf
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc000542a80, 0x699878?, 0xa44dc8?, 0x542a80?, 0x400000002?, 0x1400)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x359 fp=0xc000699848 sp=0xc000699658 pc=0xa47fd9
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0xc000a89878?, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x32 fp=0xc000699888 sp=0xc000699848 pc=0xa47c52
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000542a80, 0x109, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x755 fp=0xc000699c78 sp=0xc000699888 pc=0x926d95
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000542a80, 0xc0005341c8?, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x4a fp=0xc000699cd8 sp=0xc000699c78 pc=0x927fca
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x0?, 0xc0003b0000?, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x65 fp=0xc000699d38 sp=0xc000699cd8 pc=0x927ca5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0005bbee0?)
	pkg/sentry/kernel/task_syscall.go:257 +0x2f0 fp=0xc000699e30 sp=0xc000699d38 pc=0x927a10
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0004fe080?, 0xc000542a80)
	pkg/sentry/kernel/task_run.go:259 +0xf3e fp=0xc000699f60 sp=0xc000699e30 pc=0x91bc5e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000542a80, 0xe)
	pkg/sentry/kernel/task_run.go:94 +0x1bc fp=0xc000699fc0 sp=0xc000699f60 pc=0x91a6dc
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc000699fe0 sp=0xc000699fc0 pc=0x92558a
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc000699fe8 sp=0xc000699fe0 pc=0x46c701
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0xef