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

goroutine 1131890 [running]:
panic({0x1161fc0, 0xc001ec7170})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc002a99428 sp=0xc002a99368 pc=0x43763a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x40?, 0x12b0a20, 0x11ae600)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc002a99450 sp=0xc002a99428 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc00018ac80, {0x15759d8, 0xc00539ca80}, 0xc004daa480, {0xc00080d480?, 0xc00384b680?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9ea fp=0xc002a99688 sp=0xc002a99450 pc=0x7e994a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc00080c180?, {0x15759d8, 0xc00539ca80}, 0xc0011ab290?, 0xc00a46af00?, 0xc002a99840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc002a99708 sp=0xc002a99688 pc=0x77e9e3
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc00539ca80, 0x539ca80?, 0xc002a99950?, 0xdb03ff88?, 0x0?, 0x0)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3d5 fp=0xc002a99900 sp=0xc002a99708 pc=0xaf76d5
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0xc00539ca80?, {{0xffffffffffffff9c}, {0x20000240}, {0x4}, {0x20000280}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x6e fp=0xc002a99940 sp=0xc002a99900 pc=0xaf72ce
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00539ca80, 0x109, {{0xffffffffffffff9c}, {0x20000240}, {0x4}, {0x20000280}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc002a99c80 sp=0xc002a99940 pc=0x9ac88b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00539ca80, 0x0?, {{0xffffffffffffff9c}, {0x20000240}, {0x4}, {0x20000280}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc002a99ce0 sp=0xc002a99c80 pc=0x9ade74
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0003be310?, 0xc002a99e28?, {{0xffffffffffffff9c}, {0x20000240}, {0x4}, {0x20000280}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc002a99d40 sp=0xc002a99ce0 pc=0x9ada65
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc008220420?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc002a99e38 sp=0xc002a99d40 pc=0x9ad72c
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc00991c380?, 0xc00539ca80)
	pkg/sentry/kernel/task_run.go:259 +0x12ff fp=0xc002a99f60 sp=0xc002a99e38 pc=0x99f3bf
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00539ca80, 0x5412)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc002a99fc0 sp=0xc002a99f60 pc=0x99da1c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc002a99fe0 sp=0xc002a99fc0 pc=0x9aad0a
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc002a99fe8 sp=0xc002a99fe0 pc=0x46c521
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105