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

goroutine 258 [running]:
panic({0x115e700, 0xc00057a630})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc000c09428 sp=0xc000c09368 pc=0x43763a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x0?, 0x12acd20, 0x11aac20)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc000c09450 sp=0xc000c09428 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc000742000, {0x15712d8, 0xc000b96000}, 0xc000c0e000, {0xc0007dd400?, 0xc000c13800?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9ea fp=0xc000c09688 sp=0xc000c09450 pc=0x7e922a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc000720100?, {0x15712d8, 0xc000b96000}, 0xc00039c480?, 0xc000c0c400?, 0xc000c09840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc000c09708 sp=0xc000c09688 pc=0x77e2c3
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc000b96000, 0xaf1856?, 0xc000800340?, 0x15712d8?, 0xc000b96000?, 0x0)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3d5 fp=0xc000c09900 sp=0xc000c09708 pc=0xaf5575
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0xc000b96000?, {{0xffffff9c}, {0x20000000}, {0x3}, {0x20000040}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x6e fp=0xc000c09940 sp=0xc000c09900 pc=0xaf516e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000b96000, 0x109, {{0xffffff9c}, {0x20000000}, {0x3}, {0x20000040}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc000c09c80 sp=0xc000c09940 pc=0x9ab7ab
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000b96000, 0x85?, {{0xffffff9c}, {0x20000000}, {0x3}, {0x20000040}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc000c09ce0 sp=0xc000c09c80 pc=0x9acd94
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x8299cf?, 0x0?, {{0xffffff9c}, {0x20000000}, {0x3}, {0x20000040}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc000c09d40 sp=0xc000c09ce0 pc=0x9ac985
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000639a00?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc000c09e38 sp=0xc000c09d40 pc=0x9ac64c
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc00057e000?, 0xc000b96000)
	pkg/sentry/kernel/task_run.go:259 +0x12ff fp=0xc000c09f60 sp=0xc000c09e38 pc=0x99e2df
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000b96000, 0xf)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc000c09fc0 sp=0xc000c09f60 pc=0x99c93c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc000c09fe0 sp=0xc000c09fc0 pc=0x9a9c2a
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc000c09fe8 sp=0xc000c09fe0 pc=0x46c521
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105