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

goroutine 108 [running]:
panic({0x115e700, 0xc000550c60})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc000175428 sp=0xc000175368 pc=0x43763a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x0?, 0x12acd20, 0x11aac20)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc000175450 sp=0xc000175428 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc0002f9720, {0x15712d8, 0xc0004fb500}, 0xc000434d80, {0xc000627400?, 0xc000f08800?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9ea fp=0xc000175688 sp=0xc000175450 pc=0x7e922a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc000626100?, {0x15712d8, 0xc0004fb500}, 0xc0004e8240?, 0xc0001d3100?, 0xc000175840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc000175708 sp=0xc000175688 pc=0x77e2c3
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc0004fb500, 0xaf1856?, 0xc000411140?, 0x15712d8?, 0xc0004fb500?, 0x0)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3d5 fp=0xc000175900 sp=0xc000175708 pc=0xaf5575
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0xc0004fb500?, {{0xffffff9c}, {0x20000000}, {0x3}, {0x20000040}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x6e fp=0xc000175940 sp=0xc000175900 pc=0xaf516e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0004fb500, 0x109, {{0xffffff9c}, {0x20000000}, {0x3}, {0x20000040}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc000175c80 sp=0xc000175940 pc=0x9ab7ab
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0004fb500, 0x0?, {{0xffffff9c}, {0x20000000}, {0x3}, {0x20000040}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc000175ce0 sp=0xc000175c80 pc=0x9acd94
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000436130?, 0xc000175e28?, {{0xffffff9c}, {0x20000000}, {0x3}, {0x20000040}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc000175d40 sp=0xc000175ce0 pc=0x9ac985
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0004fc0b0?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc000175e38 sp=0xc000175d40 pc=0x9ac64c
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000626280?, 0xc0004fb500)
	pkg/sentry/kernel/task_run.go:259 +0x12ff fp=0xc000175f60 sp=0xc000175e38 pc=0x99e2df
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0004fb500, 0x17)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc000175fc0 sp=0xc000175f60 pc=0x99c93c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc000175fe0 sp=0xc000175fc0 pc=0x9a9c2a
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc000175fe8 sp=0xc000175fe0 pc=0x46c521
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105