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

goroutine 8328 [running]:
panic({0x11608a0, 0xc001784c60})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc0007a5428 sp=0xc0007a5368 pc=0x43763a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x0?, 0x12af040, 0x11ace40)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc0007a5450 sp=0xc0007a5428 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc000308140, {0x1573778, 0xc00348c000}, 0xc00126e900, {0xc0002f4100?, 0xc0004b3b00?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9ea fp=0xc0007a5688 sp=0xc0007a5450 pc=0x7e986a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc0002f4100?, {0x1573778, 0xc00348c000}, 0xc000f2d680?, 0xc0015a3100?, 0xc0007a5840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc0007a5708 sp=0xc0007a5688 pc=0x77e903
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc00348c000, 0x348c000?, 0xc0007a5948?, 0x20383e8?, 0x0?, 0x1400)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3d5 fp=0xc0007a5900 sp=0xc0007a5708 pc=0xaf5f35
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0xc00348c000?, {{0xffffffff}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x65732f636f72702f}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x6e fp=0xc0007a5940 sp=0xc0007a5900 pc=0xaf5b2e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00348c000, 0x109, {{0xffffffff}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x65732f636f72702f}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc0007a5c80 sp=0xc0007a5940 pc=0x9ac00b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00348c000, 0x85?, {{0xffffffff}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x65732f636f72702f}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc0007a5ce0 sp=0xc0007a5c80 pc=0x9ad5f4
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x82a00f?, 0x0?, {{0xffffffff}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x65732f636f72702f}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc0007a5d40 sp=0xc0007a5ce0 pc=0x9ad1e5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc001a78000?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc0007a5e38 sp=0xc0007a5d40 pc=0x9aceac
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc00313bc00?, 0xc00348c000)
	pkg/sentry/kernel/task_run.go:259 +0x12ff fp=0xc0007a5f60 sp=0xc0007a5e38 pc=0x99eb3f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00348c000, 0x6e5)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc0007a5fc0 sp=0xc0007a5f60 pc=0x99d19c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc0007a5fe0 sp=0xc0007a5fc0 pc=0x9aa48a
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc0007a5fe8 sp=0xc0007a5fe0 pc=0x46c521
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105