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

goroutine 349754 [running]:
panic({0x11d2c00, 0xc007db5950})
	GOROOT/src/runtime/panic.go:987 +0x3bb fp=0xc0010db3e8 sp=0xc0010db328 pc=0x436a3b
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x84cbdf?, 0x1324a40, 0x121f8a0)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc0010db410 sp=0xc0010db3e8 pc=0x40b45c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc00065a280, {0x15c5cf8, 0xc004ea9500}, 0xc0003e6900, {0xc0006a8200?, 0xc000622320?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9e5 fp=0xc0010db648 sp=0xc0010db410 pc=0x7f8845
gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*filesystem).LinkAt(0xc0000047d0?, {0x15c5cf8?, 0xc004ea9500?}, 0xc004ea9500?, {0xc0006a8200?, 0xc000622320?})
	<autogenerated>:1 +0x38 fp=0xc0010db688 sp=0xc0010db648 pc=0xc143d8
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc0006a8100?, {0x15c5cf8, 0xc004ea9500}, 0xc0019d8480?, 0xc000a44100?, 0xc0010db840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc0010db708 sp=0xc0010db688 pc=0x78cda3
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc004ea9500, 0x10db930?, 0xb22ec8?, 0x50d80f88?, 0x0?, 0x1400)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3b5 fp=0xc0010db900 sp=0xc0010db708 pc=0xb26ad5
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0xc004ea9500?, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x6e fp=0xc0010db940 sp=0xc0010db900 pc=0xb266ee
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc004ea9500, 0x109, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc0010dbc80 sp=0xc0010db940 pc=0x9c922b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc004ea9500, 0x85?, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc0010dbce0 sp=0xc0010dbc80 pc=0x9ca814
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0010dbd88?, 0x980886?, {{0x4}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc0010dbd40 sp=0xc0010dbce0 pc=0x9ca405
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0077ac750?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc0010dbe38 sp=0xc0010dbd40 pc=0x9ca0cc
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0099d9d00?, 0xc004ea9500)
	pkg/sentry/kernel/task_run.go:259 +0x12bf fp=0xc0010dbf60 sp=0xc0010dbe38 pc=0x9bbd7f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc004ea9500, 0x2d19)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc0010dbfc0 sp=0xc0010dbf60 pc=0x9ba41c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc0010dbfe0 sp=0xc0010dbfc0 pc=0x9c76aa
runtime.goexit()
	src/runtime/asm_amd64.s:1598 +0x1 fp=0xc0010dbfe8 sp=0xc0010dbfe0 pc=0x46d401
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105