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

goroutine 1140964 [running]:
panic({0x1161fc0, 0xc004b889c0})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc00795b428 sp=0xc00795b368 pc=0x43763a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x40?, 0x12b0a20, 0x11ae600)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc00795b450 sp=0xc00795b428 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc0001f45a0, {0x1575998, 0xc003b61500}, 0xc0040ba480, {0xc00087c700?, 0xc0066294f0?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9ea fp=0xc00795b688 sp=0xc00795b450 pc=0x7e994a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc000175300?, {0x1575998, 0xc003b61500}, 0xc004b68bd0?, 0xc003207b00?, 0xc00795b840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc00795b708 sp=0xc00795b688 pc=0x77e9e3
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc003b61500, 0x3b61500?, 0xc00795b948?, 0xc9aaef8c?, 0x4?, 0x0)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3d5 fp=0xc00795b900 sp=0xc00795b708 pc=0xaf76d5
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0xc003b61500?, {{0xffffffffffffff9c}, {0x20000240}, {0x4}, {0x20000280}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x6e fp=0xc00795b940 sp=0xc00795b900 pc=0xaf72ce
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc003b61500, 0x109, {{0xffffffffffffff9c}, {0x20000240}, {0x4}, {0x20000280}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc00795bc80 sp=0xc00795b940 pc=0x9ac88b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc003b61500, 0x85?, {{0xffffffffffffff9c}, {0x20000240}, {0x4}, {0x20000280}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc00795bce0 sp=0xc00795bc80 pc=0x9ade74
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc00795bd88?, 0x964aa6?, {{0xffffffffffffff9c}, {0x20000240}, {0x4}, {0x20000280}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc00795bd40 sp=0xc00795bce0 pc=0x9ada65
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00523b860?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc00795be38 sp=0xc00795bd40 pc=0x9ad72c
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000fd0000?, 0xc003b61500)
	pkg/sentry/kernel/task_run.go:259 +0x12ff fp=0xc00795bf60 sp=0xc00795be38 pc=0x99f3bf
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc003b61500, 0xa13e)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc00795bfc0 sp=0xc00795bf60 pc=0x99da1c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc00795bfe0 sp=0xc00795bfc0 pc=0x9aad0a
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc00795bfe8 sp=0xc00795bfe0 pc=0x46c521
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105