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

goroutine 259 [running]:
panic({0x31eb20, 0xc0006c1a40})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc000a34e90 sp=0xc000a34dd0 pc=0x12475fa
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0xc0003b23c8?, 0x473500, 0x36bd80)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc000a34eb8 sp=0xc000a34e90 pc=0x121aadc
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc00040e320, {0x833c78, 0xc000698a80}, 0xc000a2b200, {0xc0001e2d00?, 0xc0001fc640?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0xa4e fp=0xc000a35118 sp=0xc000a34eb8 pc=0x182524e
gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*filesystem).LinkAt(0xc00040e320, {0x833c78, 0xc000698a80}, 0x1281605?, {0xc0001e2d00?, 0xc0001fc640?})
	<autogenerated>:1 +0x8a fp=0xc000a35180 sp=0xc000a35118 pc=0x1dc0a0a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc000699320?, {0x833c78, 0xc000698a80}, 0xc0003b2360?, 0xc000011100?, 0xc000a353f8)
	pkg/sentry/vfs/vfs.go:296 +0x31d fp=0xc000a35230 sp=0xc000a35180 pc=0x1789fbd
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc000698a80, 0x1281605?, 0x14414d2?, 0x12815d7?, 0x101aa6678?, 0x0)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x38c fp=0xc000a354a8 sp=0xc000a35230 pc=0x1c8d68c
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0xc000a35540?, {{0x3}, {0x20000000}, {0x4}, {0x20000040}, {0x0}, {0x65732f636f72702f}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x48 fp=0xc000a35500 sp=0xc000a354a8 pc=0x1c8d2a8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000698a80, 0x109, {{0x3}, {0x20000000}, {0x4}, {0x20000040}, {0x0}, {0x65732f636f72702f}})
	pkg/sentry/kernel/task_syscall.go:142 +0x9b9 fp=0xc000a359e0 sp=0xc000a35500 pc=0x1aa6f99
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000698a80, 0x0?, {{0x3}, {0x20000000}, {0x4}, {0x20000040}, {0x0}, {0x65732f636f72702f}})
	pkg/sentry/kernel/task_syscall.go:322 +0x7d fp=0xc000a35a78 sp=0xc000a359e0 pc=0x1aa8d7d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0004d20d0?, 0xc0006960f0?, {{0x3}, {0x20000000}, {0x4}, {0x20000040}, {0x0}, {0x65732f636f72702f}})
	pkg/sentry/kernel/task_syscall.go:282 +0x8f fp=0xc000a35af0 sp=0xc000a35a78 pc=0x1aa872f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000698a80)
	pkg/sentry/kernel/task_syscall.go:257 +0x4c5 fp=0xc000a35c18 sp=0xc000a35af0 pc=0x1aa82c5
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000698a80?, 0xc000698a80)
	pkg/sentry/kernel/task_run.go:259 +0x1b76 fp=0xc000a35ec8 sp=0xc000a35c18 pc=0x1a92d96
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000698a80, 0xd)
	pkg/sentry/kernel/task_run.go:94 +0x37b fp=0xc000a35fb0 sp=0xc000a35ec8 pc=0x1a9087b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x48 fp=0xc000a35fe0 sp=0xc000a35fb0 pc=0x1aa4a88
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc000a35fe8 sp=0xc000a35fe0 pc=0x127e681
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x1ad