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

goroutine 251815 [running]:
panic({0x1162da0, 0xc0080b4ba0})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc001f3f428 sp=0xc001f3f368 pc=0x43763a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x77bef1?, 0x12b15c0, 0x11af340)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc001f3f450 sp=0xc001f3f428 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc0005c3320, {0x1576138, 0xc00411d500}, 0xc000dca000, {0xc003ecea80?, 0xc001c7e5f0?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9ea fp=0xc001f3f688 sp=0xc001f3f450 pc=0x7e98ea
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc0004d0100?, {0x1576138, 0xc00411d500}, 0xc00047bcb0?, 0xc006530300?, 0xc001f3f840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc001f3f708 sp=0xc001f3f688 pc=0x77e983
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc00411d500, 0x1?, 0x0?, 0xf23d6f8c?, 0xffffffffffffffff?, 0x0)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3d5 fp=0xc001f3f900 sp=0xc001f3f708 pc=0xaf7675
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Link(0xc00411d500?, {{0x20000140}, {0x20000180}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:988 +0x4b fp=0xc001f3f940 sp=0xc001f3f900 pc=0xaf71cb
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00411d500, 0x56, {{0x20000140}, {0x20000180}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc001f3fc80 sp=0xc001f3f940 pc=0x9ac82b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00411d500, 0x85?, {{0x20000140}, {0x20000180}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc001f3fce0 sp=0xc001f3fc80 pc=0x9ade14
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc001f3fd88?, 0x964a46?, {{0x20000140}, {0x20000180}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc001f3fd40 sp=0xc001f3fce0 pc=0x9ada05
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0041280d0?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc001f3fe38 sp=0xc001f3fd40 pc=0x9ad6cc
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc003ece900?, 0xc00411d500)
	pkg/sentry/kernel/task_run.go:259 +0x12ff fp=0xc001f3ff60 sp=0xc001f3fe38 pc=0x99f35f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00411d500, 0x1f5c)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc001f3ffc0 sp=0xc001f3ff60 pc=0x99d9bc
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc001f3ffe0 sp=0xc001f3ffc0 pc=0x9aacaa
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc001f3ffe8 sp=0xc001f3ffe0 pc=0x46c521
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105