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

goroutine 333 [running]:
panic({0x31ed00, 0xc000708de0})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc000b68e90 sp=0xc000b68dd0 pc=0x12496ba
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0xc0004004e8?, 0x473860, 0x36bfe0)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc000b68eb8 sp=0xc000b68e90 pc=0x121cb9c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc0002e4640, {0x834698, 0xc000fec000}, 0xc0009be000, {0xc000536380?, 0xc000481b00?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0xa4e fp=0xc000b69118 sp=0xc000b68eb8 pc=0x1827d6e
gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*filesystem).LinkAt(0xc0002e4640, {0x834698, 0xc000fec000}, 0x12836c5?, {0xc000536380?, 0xc000481b00?})
	<autogenerated>:1 +0x8a fp=0xc000b69180 sp=0xc000b69118 pc=0x1dc3aea
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc000fec8a0?, {0x834698, 0xc000fec000}, 0xc000400480?, 0xc000011100?, 0xc000b693f8)
	pkg/sentry/vfs/vfs.go:296 +0x31d fp=0xc000b69230 sp=0xc000b69180 pc=0x178cadd
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc000fec000, 0x12836c5?, 0x1443bb2?, 0x1283697?, 0x101aa93f8?, 0x1400)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x38c fp=0xc000b694a8 sp=0xc000b69230 pc=0x1c9072c
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0x6c6dc?, {{0xffffffffffffffff}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x48 fp=0xc000b69500 sp=0xc000b694a8 pc=0x1c90348
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000fec000, 0x109, {{0xffffffffffffffff}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x9b9 fp=0xc000b699e0 sp=0xc000b69500 pc=0x1aa9d19
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000fec000, 0x0?, {{0xffffffffffffffff}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x7d fp=0xc000b69a78 sp=0xc000b699e0 pc=0x1aabafd
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0007165b0?, 0xc000fea000?, {{0xffffffffffffffff}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x8f fp=0xc000b69af0 sp=0xc000b69a78 pc=0x1aab4af
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000fec000)
	pkg/sentry/kernel/task_syscall.go:257 +0x4c5 fp=0xc000b69c18 sp=0xc000b69af0 pc=0x1aab045
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000fec000?, 0xc000fec000)
	pkg/sentry/kernel/task_run.go:259 +0x1b76 fp=0xc000b69ec8 sp=0xc000b69c18 pc=0x1a95b16
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000fec000, 0x29)
	pkg/sentry/kernel/task_run.go:94 +0x37b fp=0xc000b69fb0 sp=0xc000b69ec8 pc=0x1a935fb
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x48 fp=0xc000b69fe0 sp=0xc000b69fb0 pc=0x1aa7808
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc000b69fe8 sp=0xc000b69fe0 pc=0x1280741
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x1ad