tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.10 head: 2aafbed9832f90f66592f9055153c2e3cfcfddce commit: bc39abd88544ee7d44a374986c944d713d130a1e [45/46] CHROMIUM: Use link policies to disallow role switches config: m68k-randconfig-s032-20210409 (attached as .config) compiler: m68k-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-279-g6d5d9b42-dirty git remote add chrome-os https://chromium.googlesource.com/chromiumos/third_party/kernel git fetch --no-tags chrome-os chromeos-5.10 git checkout bc39abd88544ee7d44a374986c944d713d130a1e # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=m68k If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) net/bluetooth/hci_event.c:2714:35: sparse: expected restricted __le16 [assigned] [usertype] policy net/bluetooth/hci_event.c:2714:35: sparse: got unsigned short [usertype] link_policy vim +2714 net/bluetooth/hci_event.c 2632 2633 static void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) 2634 { 2635 struct hci_ev_conn_complete *ev = (void *) skb->data; 2636 struct hci_conn *conn; 2637 2638 BT_DBG("%s", hdev->name); 2639 2640 hci_dev_lock(hdev); 2641 2642 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 2643 if (!conn) { 2644 /* Connection may not exist if auto-connected. Check the bredr 2645 * allowlist to see if this device is allowed to auto connect. 2646 * If link is an ACL type, create a connection class 2647 * automatically. 2648 * 2649 * Auto-connect will only occur if the event filter is 2650 * programmed with a given address. Right now, event filter is 2651 * only used during suspend. 2652 */ 2653 if (ev->link_type == ACL_LINK && 2654 hci_bdaddr_list_lookup_with_flags(&hdev->whitelist, 2655 &ev->bdaddr, 2656 BDADDR_BREDR)) { 2657 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr, 2658 HCI_ROLE_SLAVE); 2659 if (!conn) { 2660 bt_dev_err(hdev, "no memory for new conn"); 2661 goto unlock; 2662 } 2663 } else { 2664 if (ev->link_type != SCO_LINK) 2665 goto unlock; 2666 2667 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, 2668 &ev->bdaddr); 2669 if (!conn) 2670 goto unlock; 2671 2672 conn->type = SCO_LINK; 2673 } 2674 } 2675 2676 if (!ev->status) { 2677 int mask = hdev->link_mode; 2678 __u8 flags = 0; 2679 2680 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type, 2681 &flags); 2682 2683 conn->handle = __le16_to_cpu(ev->handle); 2684 2685 if (conn->type == ACL_LINK) { 2686 conn->state = BT_CONFIG; 2687 hci_conn_hold(conn); 2688 2689 if (!conn->out && !hci_conn_ssp_enabled(conn) && 2690 !hci_find_link_key(hdev, &ev->bdaddr)) 2691 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 2692 else 2693 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 2694 } else 2695 conn->state = BT_CONNECTED; 2696 2697 hci_debugfs_create_conn(conn); 2698 hci_conn_add_sysfs(conn); 2699 2700 if (test_bit(HCI_AUTH, &hdev->flags)) 2701 set_bit(HCI_CONN_AUTH, &conn->flags); 2702 2703 if (test_bit(HCI_ENCRYPT, &hdev->flags)) 2704 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 2705 2706 /* Attempt to remain in the central role if preferred */ 2707 if ((conn->mode == HCI_ROLE_MASTER && (mask & HCI_LM_MASTER)) && 2708 (conn->link_policy & HCI_LP_RSWITCH)) { 2709 struct hci_cp_write_link_policy cp; 2710 2711 conn->link_policy &= ~HCI_LP_RSWITCH; 2712 2713 cp.handle = ev->handle; 2715 hci_send_cmd(hdev, HCI_OP_WRITE_LINK_POLICY, 2716 sizeof(cp), &cp); 2717 } 2718 2719 /* Get remote features */ 2720 if (conn->type == ACL_LINK) { 2721 struct hci_cp_read_remote_features cp; 2722 cp.handle = ev->handle; 2723 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES, 2724 sizeof(cp), &cp); 2725 2726 hci_req_update_scan(hdev); 2727 } 2728 2729 /* Set packet type for incoming connection */ 2730 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) { 2731 struct hci_cp_change_conn_ptype cp; 2732 cp.handle = ev->handle; 2733 cp.pkt_type = cpu_to_le16(conn->pkt_type); 2734 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp), 2735 &cp); 2736 } 2737 } else { 2738 conn->state = BT_CLOSED; 2739 if (conn->type == ACL_LINK) 2740 mgmt_connect_failed(hdev, &conn->dst, conn->type, 2741 conn->dst_type, ev->status); 2742 } 2743 2744 if (conn->type == ACL_LINK) 2745 hci_sco_setup(conn, ev->status); 2746 2747 if (ev->status) { 2748 hci_connect_cfm(conn, ev->status); 2749 hci_conn_del(conn); 2750 } else if (ev->link_type == SCO_LINK) { 2751 switch (conn->setting & SCO_AIRMODE_MASK) { 2752 case SCO_AIRMODE_CVSD: 2753 if (hdev->notify) 2754 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 2755 break; 2756 } 2757 2758 hci_connect_cfm(conn, ev->status); 2759 } 2760 2761 unlock: 2762 hci_dev_unlock(hdev); 2763 2764 hci_conn_check_pending(hdev); 2765 } 2766 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org