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

goroutine 245 [running]:
panic({0x31eb00, 0xc000849320})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc000a98ea8 sp=0xc000a98de8 pc=0x118b57a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0xc000616608?, 0x473560, 0x36bde0)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc000a98ed0 sp=0xc000a98ea8 pc=0x115ea5c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc0006141e0, {0x750278, 0xc000a53500}, 0xc000502900, {0xc000836300?, 0xc000808400?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0xce5 fp=0xc000a99178 sp=0xc000a98ed0 pc=0x17c6c25
gvisor.dev/gvisor/pkg/sentry/fsimpl/sys.(*filesystem).LinkAt(0xc0006141e0, {0x750278, 0xc000a53500}, 0x1c87127?, {0xc000836300?, 0xc000808400?})
	<autogenerated>:1 +0x8a fp=0xc000a991e0 sp=0xc000a99178 pc=0x21782aa
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc000a53500?, {0x750278, 0xc000a53500}, 0xc0006165a0?, 0xc00088c700?, 0xc000a99490)
	pkg/sentry/vfs/vfs.go:296 +0x402 fp=0xc000a99298 sp=0xc000a991e0 pc=0x1715062
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc000a53500, 0x11c5737?, 0x2658f24?, 0x1?, 0x11c426c?, 0x0)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x4aa fp=0xc000a99540 sp=0xc000a99298 pc=0x1ca70ca
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0x0?, {{0xffffff9c}, {0x200000c0}, {0x3}, {0x20000080}, {0x0}, {0x7f49d477be78}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0xf1 fp=0xc000a995c0 sp=0xc000a99540 pc=0x1ca6bd1
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000a53500, 0x109, {{0xffffff9c}, {0x200000c0}, {0x3}, {0x20000080}, {0x0}, {0x7f49d477be78}})
	pkg/sentry/kernel/task_syscall.go:142 +0xab8 fp=0xc000a999d8 sp=0xc000a995c0 pc=0x1a94358
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000a53500, 0x1?, {{0xffffff9c}, {0x200000c0}, {0x3}, {0x20000080}, {0x0}, {0x7f49d477be78}})
	pkg/sentry/kernel/task_syscall.go:322 +0x8e fp=0xc000a99a78 sp=0xc000a999d8 pc=0x1a964ae
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000192780?, 0x115a81d?, {{0xffffff9c}, {0x200000c0}, {0x3}, {0x20000080}, {0x0}, {0x7f49d477be78}})
	pkg/sentry/kernel/task_syscall.go:282 +0xc5 fp=0xc000a99af0 sp=0xc000a99a78 pc=0x1a95d85
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000a53500)
	pkg/sentry/kernel/task_syscall.go:257 +0x53b fp=0xc000a99c18 sp=0xc000a99af0 pc=0x1a9587b
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000a53500?, 0xc000a53500)
	pkg/sentry/kernel/task_run.go:259 +0x2094 fp=0xc000a99ec0 sp=0xc000a99c18 pc=0x1a7e6b4
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000a53500, 0xe)
	pkg/sentry/kernel/task_run.go:94 +0x2cc fp=0xc000a99fb0 sp=0xc000a99ec0 pc=0x1a7bc4c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x48 fp=0xc000a99fe0 sp=0xc000a99fb0 pc=0x1a91a48
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc000a99fe8 sp=0xc000a99fe0 pc=0x11c2601
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x1da