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

goroutine 1316816 [running]:
panic({0x1161c80, 0xc008e1f740})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc002371428 sp=0xc002371368 pc=0x43763a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x40?, 0x12b0480, 0x11ae220)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc002371450 sp=0xc002371428 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc011008000, {0x1574f18, 0xc00c0d4a80}, 0xc0006f5680, {0xc0006edd00?, 0xc00c83d9a0?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9ea fp=0xc002371688 sp=0xc002371450 pc=0x7e98ea
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc0006ec700?, {0x1574f18, 0xc00c0d4a80}, 0xc002a40750?, 0xc000b20600?, 0xc002371840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc002371708 sp=0xc002371688 pc=0x77e983
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc00c0d4a80, 0xc0d4a80?, 0xc00c0d4a80?, 0x7fcc7f88?, 0x0?, 0x1000)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3d5 fp=0xc002371900 sp=0xc002371708 pc=0xaf7275
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0xc00c0d4a80?, {{0xffffffffffffff9c}, {0x20000040}, {0x3}, {0x20001200}, {0x1000}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x6e fp=0xc002371940 sp=0xc002371900 pc=0xaf6e6e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00c0d4a80, 0x109, {{0xffffffffffffff9c}, {0x20000040}, {0x3}, {0x20001200}, {0x1000}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc002371c80 sp=0xc002371940 pc=0x9ac82b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00c0d4a80, 0x85?, {{0xffffffffffffff9c}, {0x20000040}, {0x3}, {0x20001200}, {0x1000}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc002371ce0 sp=0xc002371c80 pc=0x9ade14
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x82a3ef?, 0x1?, {{0xffffffffffffff9c}, {0x20000040}, {0x3}, {0x20001200}, {0x1000}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc002371d40 sp=0xc002371ce0 pc=0x9ada05
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0076d4a90?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc002371e38 sp=0xc002371d40 pc=0x9ad6cc
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0013dc780?, 0xc00c0d4a80)
	pkg/sentry/kernel/task_run.go:259 +0x12ff fp=0xc002371f60 sp=0xc002371e38 pc=0x99f35f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00c0d4a80, 0xbf56)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc002371fc0 sp=0xc002371f60 pc=0x99d9bc
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc002371fe0 sp=0xc002371fc0 pc=0x9aacaa
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc002371fe8 sp=0xc002371fe0 pc=0x46c521
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105