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

goroutine 291 [running]:
panic({0x106ef60, 0xc0001c85a0})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc0006e3380 sp=0xc0006e32c0 pc=0x43781a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0xc00052d878?, 0x11bd9c0, 0x10bb5a0)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc0006e33a8 sp=0xc0006e3380 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc0001f6460, {0x1451b58, 0xc00027aa80}, 0xc0003ea900, {0xc000225400?, 0xc00019c370?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x825 fp=0xc0006e35d8 sp=0xc0006e33a8 pc=0x7a1065
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc000224280?, {0x1451b58, 0xc00027aa80}, 0xc00034a480?, 0xc000028700?, 0xc0006e3788)
	pkg/sentry/vfs/vfs.go:296 +0x18f fp=0xc0006e3658 sp=0xc0006e35d8 pc=0x74954f
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc00027aa80, 0x6e3878?, 0xa45c68?, 0x27aa80?, 0x400000002?, 0x1400)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x359 fp=0xc0006e3848 sp=0xc0006e3658 pc=0xa48e79
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0xc00052d878?, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x32 fp=0xc0006e3888 sp=0xc0006e3848 pc=0xa48af2
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00027aa80, 0x109, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x755 fp=0xc0006e3c78 sp=0xc0006e3888 pc=0x9271f5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00027aa80, 0xc000a061c8?, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x4a fp=0xc0006e3cd8 sp=0xc0006e3c78 pc=0x92842a
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x0?, 0xc00041c000?, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x65 fp=0xc0006e3d38 sp=0xc0006e3cd8 pc=0x928105
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0001e3110?)
	pkg/sentry/kernel/task_syscall.go:257 +0x2f0 fp=0xc0006e3e30 sp=0xc0006e3d38 pc=0x927e70
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0001da100?, 0xc00027aa80)
	pkg/sentry/kernel/task_run.go:259 +0xf3e fp=0xc0006e3f60 sp=0xc0006e3e30 pc=0x91c0be
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00027aa80, 0xf)
	pkg/sentry/kernel/task_run.go:94 +0x1bc fp=0xc0006e3fc0 sp=0xc0006e3f60 pc=0x91ab3c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc0006e3fe0 sp=0xc0006e3fc0 pc=0x9259ea
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc0006e3fe8 sp=0xc0006e3fe0 pc=0x46c701
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0xef