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

goroutine 705469 [running]:
panic({0x1161fc0, 0xc00602b140})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc00148d428 sp=0xc00148d368 pc=0x43763a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x40?, 0x12b0a20, 0x11ae600)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc00148d450 sp=0xc00148d428 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc0005e8000, {0x1575998, 0xc0051b7500}, 0xc00986a000, {0xc000801400?, 0xc0070155e0?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9ea fp=0xc00148d688 sp=0xc00148d450 pc=0x7e994a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc0005c2100?, {0x1575998, 0xc0051b7500}, 0xc002c09950?, 0xc0074b4a00?, 0xc00148d840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc00148d708 sp=0xc00148d688 pc=0x77e9e3
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc0051b7500, 0x51b7500?, 0xc0051b7500?, 0xb9e08f88?, 0x0?, 0x1000)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3d5 fp=0xc00148d900 sp=0xc00148d708 pc=0xaf76d5
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0xc0051b7500?, {{0x3}, {0x200000c0}, {0x4}, {0x20000100}, {0x1000}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x6e fp=0xc00148d940 sp=0xc00148d900 pc=0xaf72ce
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0051b7500, 0x109, {{0x3}, {0x200000c0}, {0x4}, {0x20000100}, {0x1000}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc00148dc80 sp=0xc00148d940 pc=0x9ac88b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0051b7500, 0x85?, {{0x3}, {0x200000c0}, {0x4}, {0x20000100}, {0x1000}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc00148dce0 sp=0xc00148dc80 pc=0x9ade74
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc00148dd88?, 0x964aa6?, {{0x3}, {0x200000c0}, {0x4}, {0x20000100}, {0x1000}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc00148dd40 sp=0xc00148dce0 pc=0x9ada65
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0040ab860?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc00148de38 sp=0xc00148dd40 pc=0x9ad72c
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc009a43000?, 0xc0051b7500)
	pkg/sentry/kernel/task_run.go:259 +0x12ff fp=0xc00148df60 sp=0xc00148de38 pc=0x99f3bf
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0051b7500, 0xd026)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc00148dfc0 sp=0xc00148df60 pc=0x99da1c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc00148dfe0 sp=0xc00148dfc0 pc=0x9aad0a
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc00148dfe8 sp=0xc00148dfe0 pc=0x46c521
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105