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

goroutine 238 [running]:
panic({0x31ece0, 0xc000aa2d20})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc000534ea8 sp=0xc000534de8 pc=0x118d11a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0xc0009ae068?, 0x4738c0, 0x36c040)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc000534ed0 sp=0xc000534ea8 pc=0x11605fc
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc0003b8820, {0x750c18, 0xc000bc0a80}, 0xc00065ed80, {0xc000888100?, 0xc000952900?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0xce5 fp=0xc000535178 sp=0xc000534ed0 pc=0x17c8ee5
gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*filesystem).LinkAt(0xc0003b8820, {0x750c18, 0xc000bc0a80}, 0x1c89507?, {0xc000888100?, 0xc000952900?})
	<autogenerated>:1 +0x8a fp=0xc0005351e0 sp=0xc000535178 pc=0x1dfb56a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc000bc0a80?, {0x750c18, 0xc000bc0a80}, 0xc0009ae000?, 0xc00082a700?, 0xc000535490)
	pkg/sentry/vfs/vfs.go:296 +0x402 fp=0xc000535298 sp=0xc0005351e0 pc=0x1717362
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc000bc0a80, 0x11c72d7?, 0x265e444?, 0x1?, 0x11c5e0c?, 0x1400)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x4aa fp=0xc000535540 sp=0xc000535298 pc=0x1ca94aa
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0x0?, {{0xffffffffffffffff}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0xf1 fp=0xc0005355c0 sp=0xc000535540 pc=0x1ca8fb1
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000bc0a80, 0x109, {{0xffffffffffffffff}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0xab8 fp=0xc0005359d8 sp=0xc0005355c0 pc=0x1a964d8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000bc0a80, 0x1?, {{0xffffffffffffffff}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x8e fp=0xc000535a78 sp=0xc0005359d8 pc=0x1a9862e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0007d43c0?, 0x115c3bd?, {{0xffffffffffffffff}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0xc5 fp=0xc000535af0 sp=0xc000535a78 pc=0x1a97f05
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000bc0a80)
	pkg/sentry/kernel/task_syscall.go:257 +0x53b fp=0xc000535c18 sp=0xc000535af0 pc=0x1a979fb
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000bc0a80?, 0xc000bc0a80)
	pkg/sentry/kernel/task_run.go:259 +0x2094 fp=0xc000535ec0 sp=0xc000535c18 pc=0x1a80834
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000bc0a80, 0x1e)
	pkg/sentry/kernel/task_run.go:94 +0x2cc fp=0xc000535fb0 sp=0xc000535ec0 pc=0x1a7ddcc
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x48 fp=0xc000535fe0 sp=0xc000535fb0 pc=0x1a93bc8
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc000535fe8 sp=0xc000535fe0 pc=0x11c41a1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x1da