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

goroutine 1519241 [running]:
panic({0x1161c40, 0xc001694240})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc000f3f428 sp=0xc000f3f368 pc=0x43763a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x88ae0d0?, 0x12b0420, 0x11ae1e0)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc000f3f450 sp=0xc000f3f428 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc001a2f320, {0x1574c78, 0xc008e6aa80}, 0xc000a8c480, {0xc00687c700?, 0xc000101c00?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9ea fp=0xc000f3f688 sp=0xc000f3f450 pc=0x7e986a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc0000ea700?, {0x1574c78, 0xc008e6aa80}, 0xc0051f7400?, 0xc00804f300?, 0xc000f3f840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc000f3f708 sp=0xc000f3f688 pc=0x77e903
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc008e6aa80, 0x15?, 0x2?, 0x5e52bf88?, 0x0?, 0x0)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3d5 fp=0xc000f3f900 sp=0xc000f3f708 pc=0xaf71f5
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Link(0xc008e6aa80?, {{0x20000000}, {0x20000200}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:988 +0x4b fp=0xc000f3f940 sp=0xc000f3f900 pc=0xaf6d4b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc008e6aa80, 0x56, {{0x20000000}, {0x20000200}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc000f3fc80 sp=0xc000f3f940 pc=0x9ac7ab
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc008e6aa80, 0x0?, {{0x20000000}, {0x20000200}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc000f3fce0 sp=0xc000f3fc80 pc=0x9add94
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0003bc310?, 0xc000f3fe28?, {{0x20000000}, {0x20000200}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc000f3fd40 sp=0xc000f3fce0 pc=0x9ad985
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00282c840?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc000f3fe38 sp=0xc000f3fd40 pc=0x9ad64c
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0091e1680?, 0xc008e6aa80)
	pkg/sentry/kernel/task_run.go:259 +0x12ff fp=0xc000f3ff60 sp=0xc000f3fe38 pc=0x99f2df
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc008e6aa80, 0x7982)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc000f3ffc0 sp=0xc000f3ff60 pc=0x99d93c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc000f3ffe0 sp=0xc000f3ffc0 pc=0x9aac2a
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc000f3ffe8 sp=0xc000f3ffe0 pc=0x46c521
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105