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

goroutine 802593 [running]:
panic({0x11d2c00, 0xc009feb2c0})
	GOROOT/src/runtime/panic.go:987 +0x3bb fp=0xc009d333e8 sp=0xc009d33328 pc=0x436a3b
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0xc009d33448?, 0x1324a40, 0x121f8a0)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc009d33410 sp=0xc009d333e8 pc=0x40b45c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc006a38000, {0x15c5cf8, 0xc006f46a80}, 0xc009f74000, {0xc00701f280?, 0xc007e40190?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9e5 fp=0xc009d33648 sp=0xc009d33410 pc=0x7f8845
gvisor.dev/gvisor/pkg/sentry/fsimpl/cgroupfs.(*filesystem).LinkAt(0xc00035e1d0?, {0x15c5cf8?, 0xc006f46a80?}, 0xc006f46a80?, {0xc00701f280?, 0xc007e40190?})
	<autogenerated>:1 +0x38 fp=0xc009d33688 sp=0xc009d33648 pc=0xd376b8
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc000176280?, {0x15c5cf8, 0xc006f46a80}, 0xc002430750?, 0xc005f6d500?, 0xc009d33840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc009d33708 sp=0xc009d33688 pc=0x78cda3
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc006f46a80, 0xb1e8df?, 0xc006f46a80?, 0xb4a8cf8c?, 0x0?, 0x0)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3b5 fp=0xc009d33900 sp=0xc009d33708 pc=0xb26ad5
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Link(0xc006f46a80?, {{0x20000000}, {0x20000140}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:988 +0x4b fp=0xc009d33940 sp=0xc009d33900 pc=0xb2664b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc006f46a80, 0x56, {{0x20000000}, {0x20000140}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc009d33c80 sp=0xc009d33940 pc=0x9c922b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc006f46a80, 0x85?, {{0x20000000}, {0x20000140}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc009d33ce0 sp=0xc009d33c80 pc=0x9ca814
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc009d33d88?, 0x980886?, {{0x20000000}, {0x20000140}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc009d33d40 sp=0xc009d33ce0 pc=0x9ca405
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0013c96c0?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc009d33e38 sp=0xc009d33d40 pc=0x9ca0cc
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc003e22b00?, 0xc006f46a80)
	pkg/sentry/kernel/task_run.go:259 +0x12bf fp=0xc009d33f60 sp=0xc009d33e38 pc=0x9bbd7f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc006f46a80, 0x5655)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc009d33fc0 sp=0xc009d33f60 pc=0x9ba41c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc009d33fe0 sp=0xc009d33fc0 pc=0x9c76aa
runtime.goexit()
	src/runtime/asm_amd64.s:1598 +0x1 fp=0xc009d33fe8 sp=0xc009d33fe0 pc=0x46d401
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105