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

goroutine 6126845 [running]:
panic({0x106ef60, 0xc0053c0900})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc000a2b380 sp=0xc000a2b2c0 pc=0x43781a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0xc0007f8000?, 0x11bd9c0, 0x10bb5a0)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc000a2b3a8 sp=0xc000a2b380 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc000441860, {0x1451b98, 0xc00aeab500}, 0xc00a46a000, {0xc0004e1900?, 0xc003063400?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x825 fp=0xc000a2b5d8 sp=0xc000a2b3a8 pc=0x7a1065
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc0004e0600?, {0x1451b98, 0xc00aeab500}, 0xc000380900?, 0xc006ba0f01?, 0xc000a2b788)
	pkg/sentry/vfs/vfs.go:296 +0x18f fp=0xc000a2b658 sp=0xc000a2b5d8 pc=0x74954f
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc00aeab500, 0xa420ad?, 0xc00aeab500?, 0x6d6f88?, 0x0?, 0x1400)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x359 fp=0xc000a2b848 sp=0xc000a2b658 pc=0xa48e79
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0xc00aeab500?, {{0x3}, {0x20000040}, {0x3}, {0x20000080}, {0x1400}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x32 fp=0xc000a2b888 sp=0xc000a2b848 pc=0xa48af2
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00aeab500, 0x109, {{0x3}, {0x20000040}, {0x3}, {0x20000080}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x755 fp=0xc000a2bc78 sp=0xc000a2b888 pc=0x9271f5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00aeab500, 0x0?, {{0x3}, {0x20000040}, {0x3}, {0x20000080}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x4a fp=0xc000a2bcd8 sp=0xc000a2bc78 pc=0x92842a
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc00024d440?, 0xc000a2be20?, {{0x3}, {0x20000040}, {0x3}, {0x20000080}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x65 fp=0xc000a2bd38 sp=0xc000a2bcd8 pc=0x928105
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0078e2b00?)
	pkg/sentry/kernel/task_syscall.go:257 +0x2f0 fp=0xc000a2be30 sp=0xc000a2bd38 pc=0x927e70
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0094e9f80?, 0xc00aeab500)
	pkg/sentry/kernel/task_run.go:259 +0xf3e fp=0xc000a2bf60 sp=0xc000a2be30 pc=0x91c0be
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00aeab500, 0x70d)
	pkg/sentry/kernel/task_run.go:94 +0x1bc fp=0xc000a2bfc0 sp=0xc000a2bf60 pc=0x91ab3c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc000a2bfe0 sp=0xc000a2bfc0 pc=0x9259ea
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc000a2bfe8 sp=0xc000a2bfe0 pc=0x46c701
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0xef