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

goroutine 787290 [running]:
panic({0x115f780, 0xc008a57da0})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc000a05428 sp=0xc000a05368 pc=0x43763a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0xc0001ff100?, 0x12adec0, 0x11abd20)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc000a05450 sp=0xc000a05428 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc00068a000, {0x15729f8, 0xc00589f500}, 0xc0009a8900, {0xc000725480?, 0xc0055a0800?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9ea fp=0xc000a05688 sp=0xc000a05450 pc=0x7e922a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc000458100?, {0x15729f8, 0xc00589f500}, 0xc00285fa70?, 0xc009fff000?, 0xc000a05840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc000a05708 sp=0xc000a05688 pc=0x77e2c3
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc00589f500, 0x589f500?, 0xc00982b700?, 0xf0b7805c?, 0x7?, 0x1000)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3d5 fp=0xc000a05900 sp=0xc000a05708 pc=0xaf5575
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0xc00589f500?, {{0x7}, {0x200001c0}, {0x3}, {0x200000c0}, {0x1000}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x6e fp=0xc000a05940 sp=0xc000a05900 pc=0xaf516e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00589f500, 0x109, {{0x7}, {0x200001c0}, {0x3}, {0x200000c0}, {0x1000}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc000a05c80 sp=0xc000a05940 pc=0x9ab7ab
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00589f500, 0x85?, {{0x7}, {0x200001c0}, {0x3}, {0x200000c0}, {0x1000}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc000a05ce0 sp=0xc000a05c80 pc=0x9acd94
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000a05d88?, 0x9639c6?, {{0x7}, {0x200001c0}, {0x3}, {0x200000c0}, {0x1000}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc000a05d40 sp=0xc000a05ce0 pc=0x9ac985
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00ab2dad0?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc000a05e38 sp=0xc000a05d40 pc=0x9ac64c
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0026f1580?, 0xc00589f500)
	pkg/sentry/kernel/task_run.go:259 +0x12ff fp=0xc000a05f60 sp=0xc000a05e38 pc=0x99e2df
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00589f500, 0x47a3)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc000a05fc0 sp=0xc000a05f60 pc=0x99c93c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc000a05fe0 sp=0xc000a05fc0 pc=0x9a9c2a
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc000a05fe8 sp=0xc000a05fe0 pc=0x46c521
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105