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

goroutine 355 [running]:
panic({0x31f420, 0xc00038c210})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc000930e90 sp=0xc000930dd0 pc=0x124c67a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0xc0003802a8?, 0x474240, 0x36c7a0)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc000930eb8 sp=0xc000930e90 pc=0x121fb5c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc0002ecb40, {0x835a98, 0xc000791500}, 0xc000940900, {0xc0004e2180?, 0xc0001644b0?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0xa4e fp=0xc000931118 sp=0xc000930eb8 pc=0x182adce
gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*filesystem).LinkAt(0xc0002ecb40, {0x835a98, 0xc000791500}, 0x1286685?, {0xc0004e2180?, 0xc0001644b0?})
	<autogenerated>:1 +0x8a fp=0xc000931180 sp=0xc000931118 pc=0x1dc986a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc000791da0?, {0x835a98, 0xc000791500}, 0xc000380240?, 0xc0005c8700?, 0xc0009313f8)
	pkg/sentry/vfs/vfs.go:296 +0x31d fp=0xc000931230 sp=0xc000931180 pc=0x178fb3d
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc000791500, 0x1286685?, 0x1446b72?, 0x1286657?, 0x101aacd38?, 0x1400)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x38c fp=0xc0009314a8 sp=0xc000931230 pc=0x1c9538c
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0x1284eb9?, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x48 fp=0xc000931500 sp=0xc0009314a8 pc=0x1c94fa8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000791500, 0x109, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x9b9 fp=0xc0009319e0 sp=0xc000931500 pc=0x1aad659
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000791500, 0x0?, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x7d fp=0xc000931a78 sp=0xc0009319e0 pc=0x1aaf43d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0001c9e10?, 0xc00070c1e0?, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x8f fp=0xc000931af0 sp=0xc000931a78 pc=0x1aaedef
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000791500)
	pkg/sentry/kernel/task_syscall.go:257 +0x4c5 fp=0xc000931c18 sp=0xc000931af0 pc=0x1aae985
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000791500?, 0xc000791500)
	pkg/sentry/kernel/task_run.go:259 +0x1b76 fp=0xc000931ec8 sp=0xc000931c18 pc=0x1a99456
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000791500, 0xc)
	pkg/sentry/kernel/task_run.go:94 +0x37b fp=0xc000931fb0 sp=0xc000931ec8 pc=0x1a96f3b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x48 fp=0xc000931fe0 sp=0xc000931fb0 pc=0x1aab148
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc000931fe8 sp=0xc000931fe0 pc=0x1283701
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x1ad