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

goroutine 995353 [running]:
panic({0x1161c80, 0xc0098c7650})
	GOROOT/src/runtime/panic.go:987 +0x3ba fp=0xc000bb9428 sp=0xc000bb9368 pc=0x43763a
runtime.panicdottypeE(...)
	GOROOT/src/runtime/iface.go:262
runtime.panicdottypeI(0x77bef1?, 0x12b0480, 0x11ae220)
	GOROOT/src/runtime/iface.go:272 +0x7c fp=0xc000bb9450 sp=0xc000bb9428 pc=0x40b17c
gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).LinkAt(0xc0006aab40, {0x1574f18, 0xc0061b6a80}, 0xc0006b2480, {0xc002b6d200?, 0xc0059ce690?})
	pkg/sentry/fsimpl/kernfs/filesystem.go:367 +0x9ea fp=0xc000bb9688 sp=0xc000bb9450 pc=0x7e98ea
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).LinkAt(0xc0005c6100?, {0x1574f18, 0xc0061b6a80}, 0xc0066a8870?, 0xc0056d6e00?, 0xc000bb9840)
	pkg/sentry/vfs/vfs.go:296 +0x203 fp=0xc000bb9708 sp=0xc000bb9688 pc=0x77e983
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.linkat(0xc0061b6a80, 0xaef07f?, 0xc0061b6a80?, 0x26933f88?, 0x0?, 0x0)
	pkg/sentry/syscalls/linux/sys_file.go:1029 +0x3d5 fp=0xc000bb9900 sp=0xc000bb9708 pc=0xaf7275
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Link(0xc0061b6a80?, {{0x20000000}, {0x20000080}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_file.go:988 +0x4b fp=0xc000bb9940 sp=0xc000bb9900 pc=0xaf6dcb
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0061b6a80, 0x56, {{0x20000000}, {0x20000080}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc000bb9c80 sp=0xc000bb9940 pc=0x9ac82b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0061b6a80, 0x85?, {{0x20000000}, {0x20000080}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc000bb9ce0 sp=0xc000bb9c80 pc=0x9ade14
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000bb9d88?, 0x964a46?, {{0x20000000}, {0x20000080}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc000bb9d40 sp=0xc000bb9ce0 pc=0x9ada05
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc006b0e680?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc000bb9e38 sp=0xc000bb9d40 pc=0x9ad6cc
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc007138a80?, 0xc0061b6a80)
	pkg/sentry/kernel/task_run.go:259 +0x12ff fp=0xc000bb9f60 sp=0xc000bb9e38 pc=0x99f35f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0061b6a80, 0x46a7)
	pkg/sentry/kernel/task_run.go:94 +0x21c fp=0xc000bb9fc0 sp=0xc000bb9f60 pc=0x99d9bc
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:377 +0x2a fp=0xc000bb9fe0 sp=0xc000bb9fc0 pc=0x9aacaa
runtime.goexit()
	src/runtime/asm_amd64.s:1594 +0x1 fp=0xc000bb9fe8 sp=0xc000bb9fe0 pc=0x46c521
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:377 +0x105