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

goroutine 111 [running]:
panic({0x115e700, 0xc000a222a0})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc0004c7428 sp=0xc0004c7368 pc=0x43763a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x203000?, 0x12acd20, 0x11aac20)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc0004c7450 sp=0xc0004c7428 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc0007d2140, {0x15712d8, 0xc000c0c000}, 0xc0006a4480, {0xc000871480?, 0xc000a08050?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9ea fp=0xc0004c7688 sp=0xc0004c7450 pc=0x7e922a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc0007a4100?, {0x15712d8, 0xc000c0c000}, 0xc0007ae480?, 0xc0001fb500?, 0xc0004c7840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc0004c7708 sp=0xc0004c7688 pc=0x77e2c3
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc000c0c000, 0xc0c000?, 0xc000c0c000?, 0x0?, 0x0?, 0x0)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3d5 fp=0xc0004c7900 sp=0xc0004c7708 pc=0xaf5575
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0x0?, {{0x3}, {0x20000000}, {0x4}, {0x20000040}, {0x0}, {0x65732f636f72702f}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x6e fp=0xc0004c7940 sp=0xc0004c7900 pc=0xaf516e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000c0c000, 0x109, {{0x3}, {0x20000000}, {0x4}, {0x20000040}, {0x0}, {0x65732f636f72702f}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc0004c7c80 sp=0xc0004c7940 pc=0x9ab7ab
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000c0c000, 0x85?, {{0x3}, {0x20000000}, {0x4}, {0x20000040}, {0x0}, {0x65732f636f72702f}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc0004c7ce0 sp=0xc0004c7c80 pc=0x9acd94
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x8299cf?, 0x0?, {{0x3}, {0x20000000}, {0x4}, {0x20000040}, {0x0}, {0x65732f636f72702f}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc0004c7d40 sp=0xc0004c7ce0 pc=0x9ac985
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0009764e0?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc0004c7e38 sp=0xc0004c7d40 pc=0x9ac64c
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc00088a100?, 0xc000c0c000)
	pkg/sentry/kernel/task_run.go:259 +0x12ff fp=0xc0004c7f60 sp=0xc0004c7e38 pc=0x99e2df
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000c0c000, 0x11)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc0004c7fc0 sp=0xc0004c7f60 pc=0x99c93c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc0004c7fe0 sp=0xc0004c7fc0 pc=0x9a9c2a
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc0004c7fe8 sp=0xc0004c7fe0 pc=0x46c521
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105