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

goroutine 152 [running]:
panic({0x1161fc0, 0xc000628de0})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc000853428 sp=0xc000853368 pc=0x43763a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x40?, 0x12b0a20, 0x11ae600)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc000853450 sp=0xc000853428 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc00055e140, {0x15759d8, 0xc000b99500}, 0xc000bda000, {0xc000719400?, 0xc000bac320?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9ea fp=0xc000853688 sp=0xc000853450 pc=0x7e994a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc000718100?, {0x15759d8, 0xc000b99500}, 0xc00066a510?, 0xc00083aa00?, 0xc000853840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc000853708 sp=0xc000853688 pc=0x77e9e3
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc000b99500, 0xaf38c0?, 0xc00066a5b0?, 0x15759d8?, 0xc000b99500?, 0x1400)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3d5 fp=0xc000853900 sp=0xc000853708 pc=0xaf76d5
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0xc000b99500?, {{0x7}, {0x200000c0}, {0x8}, {0x20000100}, {0x1400}, {0x7f85f5342e78}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x6e fp=0xc000853940 sp=0xc000853900 pc=0xaf72ce
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000b99500, 0x109, {{0x7}, {0x200000c0}, {0x8}, {0x20000100}, {0x1400}, {0x7f85f5342e78}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc000853c80 sp=0xc000853940 pc=0x9ac88b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000b99500, 0x0?, {{0x7}, {0x200000c0}, {0x8}, {0x20000100}, {0x1400}, {0x7f85f5342e78}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc000853ce0 sp=0xc000853c80 pc=0x9ade74
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000534040?, 0xc000853e28?, {{0x7}, {0x200000c0}, {0x8}, {0x20000100}, {0x1400}, {0x7f85f5342e78}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc000853d40 sp=0xc000853ce0 pc=0x9ada65
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000b9e160?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc000853e38 sp=0xc000853d40 pc=0x9ad72c
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000baa280?, 0xc000b99500)
	pkg/sentry/kernel/task_run.go:259 +0x12ff fp=0xc000853f60 sp=0xc000853e38 pc=0x99f3bf
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000b99500, 0x1e)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc000853fc0 sp=0xc000853f60 pc=0x99da1c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc000853fe0 sp=0xc000853fc0 pc=0x9aad0a
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc000853fe8 sp=0xc000853fe0 pc=0x46c521
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105