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

goroutine 276 [running]:
panic({0x1161a00, 0xc000a2a6c0})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc000c17428 sp=0xc000c17368 pc=0x43763a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x40?, 0x12b01e0, 0x11adfa0)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc000c17450 sp=0xc000c17428 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc00054e000, {0x1574a18, 0xc0007d5500}, 0xc000468d80, {0xc000224980?, 0xc00066a320?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9ea fp=0xc000c17688 sp=0xc000c17450 pc=0x7e986a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc000224280?, {0x1574a18, 0xc0007d5500}, 0xc000454510?, 0xc0001f4600?, 0xc000c17840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc000c17708 sp=0xc000c17688 pc=0x77e903
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc0007d5500, 0xc17930?, 0xaf2c08?, 0x7d5500?, 0x400000002?, 0x1400)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3d5 fp=0xc000c17900 sp=0xc000c17708 pc=0xaf6815
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0x0?, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x6e fp=0xc000c17940 sp=0xc000c17900 pc=0xaf640e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0007d5500, 0x109, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc000c17c80 sp=0xc000c17940 pc=0x9ac36b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0007d5500, 0x85?, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc000c17ce0 sp=0xc000c17c80 pc=0x9ad954
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x82a36f?, 0x0?, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc000c17d40 sp=0xc000c17ce0 pc=0x9ad545
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0007a0820?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc000c17e38 sp=0xc000c17d40 pc=0x9ad20c
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0007da180?, 0xc0007d5500)
	pkg/sentry/kernel/task_run.go:259 +0x12ff fp=0xc000c17f60 sp=0xc000c17e38 pc=0x99ee9f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0007d5500, 0xe)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc000c17fc0 sp=0xc000c17f60 pc=0x99d4fc
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc000c17fe0 sp=0xc000c17fc0 pc=0x9aa7ea
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc000c17fe8 sp=0xc000c17fe0 pc=0x46c521
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105