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

goroutine 533804 [running]:
panic({0x1161c40, 0xc00a00d800})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc000761428 sp=0xc000761368 pc=0x43763a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x40?, 0x12b0420, 0x11ae1e0)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc000761450 sp=0xc000761428 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc000702140, {0x1574c38, 0xc003422000}, 0xc002fd2000, {0xc0007ade00?, 0xc0043d5630?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9ea fp=0xc000761688 sp=0xc000761450 pc=0x7e986a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc0001bc280?, {0x1574c38, 0xc003422000}, 0xc003240480?, 0xc004c6a700?, 0xc000761840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc000761708 sp=0xc000761688 pc=0x77e903
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc003422000, 0x3422000?, 0xc003422000?, 0x5c8fcf8c?, 0xffffffffffffffff?, 0x1400)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3d5 fp=0xc000761900 sp=0xc000761708 pc=0xaf71f5
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0xc003422000?, {{0xffffffffffffff9c}, {0x20000040}, {0x3}, {0x20000080}, {0x1400}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x6e fp=0xc000761940 sp=0xc000761900 pc=0xaf6dee
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc003422000, 0x109, {{0xffffffffffffff9c}, {0x20000040}, {0x3}, {0x20000080}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc000761c80 sp=0xc000761940 pc=0x9ac7ab
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc003422000, 0x85?, {{0xffffffffffffff9c}, {0x20000040}, {0x3}, {0x20000080}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc000761ce0 sp=0xc000761c80 pc=0x9add94
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000761d88?, 0x9649c6?, {{0xffffffffffffff9c}, {0x20000040}, {0x3}, {0x20000080}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc000761d40 sp=0xc000761ce0 pc=0x9ad985
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00881a410?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc000761e38 sp=0xc000761d40 pc=0x9ad64c
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc004e79980?, 0xc003422000)
	pkg/sentry/kernel/task_run.go:259 +0x12ff fp=0xc000761f60 sp=0xc000761e38 pc=0x99f2df
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc003422000, 0x51b3)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc000761fc0 sp=0xc000761f60 pc=0x99d93c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc000761fe0 sp=0xc000761fc0 pc=0x9aac2a
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc000761fe8 sp=0xc000761fe0 pc=0x46c521
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105