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

goroutine 4075587 [running]:
panic({0xb6a200, 0x40081fb2c0})
	GOROOT/src/runtime/panic.go:987 +0x3d8 fp=0x400163f340 sp=0x400163f280 pc=0x46bb8
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x40029684e0?, 0xcb7360, 0xbb6120)
	GOROOT/src/runtime/iface.go:272 +0x74 fp=0x400163f370 sp=0x400163f340 pc=0x1a174
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0x40005026e0, {0xf64bb8, 0x40063b5500}, 0x40015af680, {0x400031f480?, 0x400a95e0f0?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x604 fp=0x400163f5a0 sp=0x400163f370 pc=0x37f634
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0x40063b5500?, {0xf64bb8, 0x40063b5500}, 0x3aecbc?, 0x400163f6f8?, 0x400163f708)
	pkg/sentry/vfs/vfs.go:296 +0x168 fp=0x400163f620 sp=0x400163f5a0 pc=0x32af68
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0x40063b5500, 0x4dd308?, 0x40063b5500?, 0xb6c8f2d8?, 0x400163f848?, 0x400)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x278 fp=0x400163f810 sp=0x400163f620 pc=0x5ddf98
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0x40063b5500?, {{0xffffffffffffff9c}, {0x20000100}, {0x4}, {0x20000180}, {0x400}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x30 fp=0x400163f850 sp=0x400163f810 pc=0x5ddcf0
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0x40063b5500, 0x25, {{0xffffffffffffff9c}, {0x20000100}, {0x4}, {0x20000180}, {0x400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x578 fp=0x400163fc40 sp=0x400163f850 pc=0x4dd308
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0x40063b5500, 0x0?, {{0xffffffffffffff9c}, {0x20000100}, {0x4}, {0x20000180}, {0x400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x40 fp=0x400163fca0 sp=0x400163fc40 pc=0x4de220
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x17d7841?, 0x19881d3e?, {{0xffffffffffffff9c}, {0x20000100}, {0x4}, {0x20000180}, {0x400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x5c fp=0x400163fd00 sp=0x400163fca0 pc=0x4ddf2c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0x400540f2b0?)
	pkg/sentry/kernel/task_syscall.go:257 +0x298 fp=0x400163fe00 sp=0x400163fd00 pc=0x4ddcd8
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x4008caae80?, 0x40063b5500)
	pkg/sentry/kernel/task_run.go:259 +0xd10 fp=0x400163ff40 sp=0x400163fe00 pc=0x4d32c0
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0x40063b5500, 0x304d)
	pkg/sentry/kernel/task_run.go:94 +0x1a8 fp=0x400163ffb0 sp=0x400163ff40 pc=0x4d1fd8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2c fp=0x400163ffd0 sp=0x400163ffb0 pc=0x4dbdbc
runtime.goexit()
	src/runtime/asm_arm64.s:1172 +0x4 fp=0x400163ffd0 sp=0x400163ffd0 pc=0x7b5a4
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0xe8