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

goroutine 1049260 [running]:
panic({0x1162da0, 0xc006e33530})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc002cb1428 sp=0xc002cb1368 pc=0x43763a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x40?, 0x12b15c0, 0x11af340)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc002cb1450 sp=0xc002cb1428 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc0008000a0, {0x1576178, 0xc0061b9500}, 0xc00810c000, {0xc0000e7d00?, 0xc0054d3130?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9ea fp=0xc002cb1688 sp=0xc002cb1450 pc=0x7e98ea
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc0000e6700?, {0x1576178, 0xc0061b9500}, 0xc0065e7170?, 0xc00766bc00?, 0xc002cb1840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc002cb1708 sp=0xc002cb1688 pc=0x77e983
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc0061b9500, 0x101?, 0x0?, 0xb5322f88?, 0x0?, 0x1400)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3d5 fp=0xc002cb1900 sp=0xc002cb1708 pc=0xaf7675
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Linkat(0xc0061b9500?, {{0x5}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:998 +0x6e fp=0xc002cb1940 sp=0xc002cb1900 pc=0xaf726e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0061b9500, 0x109, {{0x5}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc002cb1c80 sp=0xc002cb1940 pc=0x9ac82b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0061b9500, 0x0?, {{0x5}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc002cb1ce0 sp=0xc002cb1c80 pc=0x9ade14
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000370310?, 0xc002cb1e28?, {{0x5}, {0x20000100}, {0x3}, {0x200000c0}, {0x1400}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc002cb1d40 sp=0xc002cb1ce0 pc=0x9ada05
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00426d6b0?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc002cb1e38 sp=0xc002cb1d40 pc=0x9ad6cc
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0076f2600?, 0xc0061b9500)
	pkg/sentry/kernel/task_run.go:259 +0x12ff fp=0xc002cb1f60 sp=0xc002cb1e38 pc=0x99f35f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0061b9500, 0x6f5d)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc002cb1fc0 sp=0xc002cb1f60 pc=0x99d9bc
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc002cb1fe0 sp=0xc002cb1fc0 pc=0x9aacaa
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc002cb1fe8 sp=0xc002cb1fe0 pc=0x46c521
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105