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

goroutine 554423 [running]:
panic({0x115e740, 0xc0069ddcb0})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc0007ed428 sp=0xc0007ed368 pc=0x43763a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x0?, 0x12ace60, 0x11aace0)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc0007ed450 sp=0xc0007ed428 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc0006b4000, {0x15714d8, 0xc005c12a80}, 0xc009dee000, {0xc0007c9480?, 0xc00865f400?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9ea fp=0xc0007ed688 sp=0xc0007ed450 pc=0x7e922a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc000694100?, {0x15714d8, 0xc005c12a80}, 0xc0058d9170?, 0xc006d33f00?, 0xc0007ed840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc0007ed708 sp=0xc0007ed688 pc=0x77e2c3
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc005c12a80, 0x5c12a80?, 0x0?, 0x5a35f8c?, 0xffffffffffffffff?, 0x1000)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3d5 fp=0xc0007ed900 sp=0xc0007ed708 pc=0xaf5575
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0xc005c12a80?, {{0xffffffffffffff9c}, {0x20000000}, {0x3}, {0x20000040}, {0x1000}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x6e fp=0xc0007ed940 sp=0xc0007ed900 pc=0xaf516e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc005c12a80, 0x109, {{0xffffffffffffff9c}, {0x20000000}, {0x3}, {0x20000040}, {0x1000}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc0007edc80 sp=0xc0007ed940 pc=0x9ab7ab
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc005c12a80, 0x85?, {{0xffffffffffffff9c}, {0x20000000}, {0x3}, {0x20000040}, {0x1000}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc0007edce0 sp=0xc0007edc80 pc=0x9acd94
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0007edd88?, 0x9639c6?, {{0xffffffffffffff9c}, {0x20000000}, {0x3}, {0x20000040}, {0x1000}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc0007edd40 sp=0xc0007edce0 pc=0x9ac985
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc003f42820?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc0007ede38 sp=0xc0007edd40 pc=0x9ac64c
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0073cd900?, 0xc005c12a80)
	pkg/sentry/kernel/task_run.go:259 +0x12ff fp=0xc0007edf60 sp=0xc0007ede38 pc=0x99e2df
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc005c12a80, 0x7f8c)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc0007edfc0 sp=0xc0007edf60 pc=0x99c93c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc0007edfe0 sp=0xc0007edfc0 pc=0x9a9c2a
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc0007edfe8 sp=0xc0007edfe0 pc=0x46c521
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105