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

goroutine 198 [running]:
panic({0x31f420, 0xc000473650})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc0007a4e90 sp=0xc0007a4dd0 pc=0x124c67a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0xc0004428d8?, 0x474240, 0x36c7a0)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc0007a4eb8 sp=0xc0007a4e90 pc=0x121fb5c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc0003805a0, {0x835a98, 0xc0009a8000}, 0xc0007b8480, {0xc0001bd800?, 0xc00078c190?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0xa4e fp=0xc0007a5118 sp=0xc0007a4eb8 pc=0x182adce
gvisor.dev/gvisor/pkg/sentry/fsimpl/sys.(*filesystem).LinkAt(0xc0003805a0, {0x835a98, 0xc0009a8000}, 0x1286685?, {0xc0001bd800?, 0xc00078c190?})
	<autogenerated>:1 +0x8a fp=0xc0007a5180 sp=0xc0007a5118 pc=0x210c4ea
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc0009a88a0?, {0x835a98, 0xc0009a8000}, 0xc000442870?, 0xc00020ef00?, 0xc0007a53f8)
	pkg/sentry/vfs/vfs.go:296 +0x31d fp=0xc0007a5230 sp=0xc0007a5180 pc=0x178fb3d
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc0009a8000, 0x1286685?, 0x1446b72?, 0x1286657?, 0x101aacd38?, 0x1400)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x38c fp=0xc0007a54a8 sp=0xc0007a5230 pc=0x1c9538c
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0xc0009a8000?, {{0x7}, {0x200000c0}, {0x8}, {0x20000100}, {0x1400}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x48 fp=0xc0007a5500 sp=0xc0007a54a8 pc=0x1c94fa8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0009a8000, 0x109, {{0x7}, {0x200000c0}, {0x8}, {0x20000100}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x9b9 fp=0xc0007a59e0 sp=0xc0007a5500 pc=0x1aad659
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0009a8000, 0x0?, {{0x7}, {0x200000c0}, {0x8}, {0x20000100}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x7d fp=0xc0007a5a78 sp=0xc0007a59e0 pc=0x1aaf43d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000655450?, 0xc0002da870?, {{0x7}, {0x200000c0}, {0x8}, {0x20000100}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x8f fp=0xc0007a5af0 sp=0xc0007a5a78 pc=0x1aaedef
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0009a8000)
	pkg/sentry/kernel/task_syscall.go:257 +0x4c5 fp=0xc0007a5c18 sp=0xc0007a5af0 pc=0x1aae985
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0009a8000?, 0xc0009a8000)
	pkg/sentry/kernel/task_run.go:259 +0x1b76 fp=0xc0007a5ec8 sp=0xc0007a5c18 pc=0x1a99456
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0009a8000, 0xf)
	pkg/sentry/kernel/task_run.go:94 +0x37b fp=0xc0007a5fb0 sp=0xc0007a5ec8 pc=0x1a96f3b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x48 fp=0xc0007a5fe0 sp=0xc0007a5fb0 pc=0x1aab148
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc0007a5fe8 sp=0xc0007a5fe0 pc=0x1283701
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x1ad