tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: ca0e494af5edb59002665bf12871e94b4163a257 commit: 17896406ff3592d47b476ddd29276bf9cf8a26dd [940/8137] Bluetooth: implement read/set default system parameters mgmt config: arm-randconfig-r034-20200715 (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 02946de3802d3bc65bc9f2eb9b8d4969b5a7add8) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi git checkout 17896406ff3592d47b476ddd29276bf9cf8a26dd # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): int read_def_system_config(struct sock *sk, struct hci_dev *hdev, void *data, ^ 1 warning generated. vim +/read_def_system_config +20 net/bluetooth/mgmt_config.c 19 21 u16 data_len) 22 { 23 struct { 24 struct mgmt_tlv entry; 25 union { 26 /* This is a simplification for now since all values 27 * are 16 bits. In the future, this code may need 28 * refactoring to account for variable length values 29 * and properly calculate the required buffer size. 30 */ 31 __le16 value; 32 }; 33 } __packed params[] = { 34 /* Please see mgmt-api.txt for documentation of these values */ 35 HDEV_PARAM_U16(0x0000, def_page_scan_type), 36 HDEV_PARAM_U16(0x0001, def_page_scan_int), 37 HDEV_PARAM_U16(0x0002, def_page_scan_window), 38 HDEV_PARAM_U16(0x0003, def_inq_scan_type), 39 HDEV_PARAM_U16(0x0004, def_inq_scan_int), 40 HDEV_PARAM_U16(0x0005, def_inq_scan_window), 41 HDEV_PARAM_U16(0x0006, def_br_lsto), 42 HDEV_PARAM_U16(0x0007, def_page_timeout), 43 HDEV_PARAM_U16(0x0008, sniff_min_interval), 44 HDEV_PARAM_U16(0x0009, sniff_max_interval), 45 HDEV_PARAM_U16(0x000a, le_adv_min_interval), 46 HDEV_PARAM_U16(0x000b, le_adv_max_interval), 47 HDEV_PARAM_U16(0x000c, def_multi_adv_rotation_duration), 48 HDEV_PARAM_U16(0x000d, le_scan_interval), 49 HDEV_PARAM_U16(0x000e, le_scan_window), 50 HDEV_PARAM_U16(0x000f, le_scan_int_suspend), 51 HDEV_PARAM_U16(0x0010, le_scan_window_suspend), 52 HDEV_PARAM_U16(0x0011, le_scan_int_discovery), 53 HDEV_PARAM_U16(0x0012, le_scan_window_discovery), 54 HDEV_PARAM_U16(0x0013, le_scan_int_adv_monitor), 55 HDEV_PARAM_U16(0x0014, le_scan_window_adv_monitor), 56 HDEV_PARAM_U16(0x0015, le_scan_int_connect), 57 HDEV_PARAM_U16(0x0016, le_scan_window_connect), 58 HDEV_PARAM_U16(0x0017, le_conn_min_interval), 59 HDEV_PARAM_U16(0x0018, le_conn_max_interval), 60 HDEV_PARAM_U16(0x0019, le_conn_latency), 61 HDEV_PARAM_U16(0x001a, le_supv_timeout), 62 }; 63 struct mgmt_rp_read_def_system_config *rp = (void *)params; 64 65 bt_dev_dbg(hdev, "sock %p", sk); 66 67 return mgmt_cmd_complete(sk, hdev->id, 68 MGMT_OP_READ_DEF_SYSTEM_CONFIG, 69 0, rp, sizeof(params)); 70 } 71 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org