static int usb_xhci_post_load(void *opaque, int version_id)
{
    XHCIState *xhci = opaque;
    PCIDevice *pci_dev = PCI_DEVICE(xhci);
    XHCISlot *slot;
    XHCIEPContext *epctx;
    dma_addr_t dcbaap, pctx;
    uint32_t slot_ctx[4];
    uint32_t ep_ctx[5];
    int slotid, epid, state, intr;

    dcbaap = xhci_addr64(xhci->dcbaap_low, xhci->dcbaap_high);

    for (slotid = 1; slotid <= xhci->numslots; slotid++) {
        slot = &xhci->slots[slotid-1];
        if (!slot->addressed) {
            continue;
        }
        slot->ctx =
            xhci_mask64(ldq_le_pci_dma(pci_dev, dcbaap + 8 * slotid));
        xhci_dma_read_u32s(xhci, slot->ctx, slot_ctx, sizeof(slot_ctx));
        slot->uport = xhci_lookup_uport(xhci, slot_ctx);
        if (!slot->uport) {
            /* should not happen, but may trigger on guest bugs */
            slot->enabled = 0;
            slot->addressed = 0;
            continue;
        }
        assert(slot->uport && slot->uport->dev);

        for (epid = 1; epid <= 31; epid++) {
            pctx = slot->ctx + 32 * epid;
            xhci_dma_read_u32s(xhci, pctx, ep_ctx, sizeof(ep_ctx));
            state = ep_ctx[0] & EP_STATE_MASK;
            if (state == EP_DISABLED) {
                continue;
            }
            epctx = xhci_alloc_epctx(xhci, slotid, epid);
            slot->eps[epid-1] = epctx;
            xhci_init_epctx(epctx, pctx, ep_ctx);
            epctx->state = state;
            if (state == EP_RUNNING) {
                /* kick endpoint after vmload is finished */
                timer_mod(epctx->kick_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
            }
        }
    }

    for (intr = 0; intr < xhci->numintrs; intr++) {
        if (xhci->intr[intr].msix_used) {
            msix_vector_use(pci_dev, intr);
        } else {
            msix_vector_unuse(pci_dev, intr);
        }
    }

    return 0;
}

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.