Hi Larry, First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: c0a3a64e723324ae6dda53214061a71de63808c3 commit: 5b5ab4cb5cda824ef59e0511ac5d585f35f1a1a6 staging: r8822be: Add Makefiles and Kconfig for new driver date: 5 weeks ago config: x86_64-randconfig-n0-09231026 (attached as .config) compiler: gcc-4.8 (Debian 4.8.4-1) 4.8.4 reproduce: git checkout 5b5ab4cb5cda824ef59e0511ac5d585f35f1a1a6 # save the attached .config to linux build tree make ARCH=x86_64 Note: it may well be a FALSE warning. FWIW you are at least aware of it now. All warnings (new ones prefixed by >>): Cyclomatic Complexity 5 drivers/staging//rtlwifi/phydm/phydm_dig.c:get_igi_for_diff Cyclomatic Complexity 11 drivers/staging//rtlwifi/phydm/phydm_dig.c:odm_fa_threshold_check Cyclomatic Complexity 7 drivers/staging//rtlwifi/phydm/phydm_dig.c:phydm_get_current_igi Cyclomatic Complexity 21 drivers/staging//rtlwifi/phydm/phydm_dig.c:odm_dig_abort Cyclomatic Complexity 16 drivers/staging//rtlwifi/phydm/phydm_dig.c:phydm_set_big_jump_step Cyclomatic Complexity 19 drivers/staging//rtlwifi/phydm/phydm_dig.c:phydm_check_ap_write_dig Cyclomatic Complexity 60 drivers/staging//rtlwifi/phydm/phydm_dig.c:odm_forbidden_igi_check Cyclomatic Complexity 21 drivers/staging//rtlwifi/phydm/phydm_dig.c:odm_change_dynamic_init_gain_thresh Cyclomatic Complexity 59 drivers/staging//rtlwifi/phydm/phydm_dig.c:odm_write_dig Cyclomatic Complexity 56 drivers/staging//rtlwifi/phydm/phydm_dig.c:odm_pause_dig Cyclomatic Complexity 13 drivers/staging//rtlwifi/phydm/phydm_dig.c:odm_dig_init Cyclomatic Complexity 197 drivers/staging//rtlwifi/phydm/phydm_dig.c:odm_DIG Cyclomatic Complexity 22 drivers/staging//rtlwifi/phydm/phydm_dig.c:odm_dig_by_rssi_lps Cyclomatic Complexity 35 drivers/staging//rtlwifi/phydm/phydm_dig.c:odm_false_alarm_counter_statistics Cyclomatic Complexity 3 drivers/staging//rtlwifi/phydm/phydm_dig.c:odm_write_cck_cca_thres Cyclomatic Complexity 56 drivers/staging//rtlwifi/phydm/phydm_dig.c:odm_pause_cck_packet_detection Cyclomatic Complexity 31 drivers/staging//rtlwifi/phydm/phydm_dig.c:odm_cck_packet_detection_thresh Cyclomatic Complexity 1 drivers/staging//rtlwifi/phydm/phydm_dig.c:phydm_dig_go_up_check drivers/staging//rtlwifi/phydm/phydm_dig.c: In function 'odm_pause_dig': >> drivers/staging//rtlwifi/phydm/phydm_dig.c:494:45: warning: array subscript >> is below array bounds [-Warray-bounds] odm_write_dig(dm, dig_tab->pause_dig_value[max_level]); ^ drivers/staging//rtlwifi/phydm/phydm_dig.c: In function 'odm_pause_cck_packet_detection': drivers/staging//rtlwifi/phydm/phydm_dig.c:1429:32: warning: array subscript is below array bounds [-Warray-bounds] dig_tab->pause_cckpd_value[max_level]); ^ vim +494 drivers/staging//rtlwifi/phydm/phydm_dig.c 9ce99b04 Ping-Ke Shih 2017-08-17 380 9ce99b04 Ping-Ke Shih 2017-08-17 381 void odm_pause_dig(void *dm_void, enum phydm_pause_type pause_type, 9ce99b04 Ping-Ke Shih 2017-08-17 382 enum phydm_pause_level pause_level, u8 igi_value) 9ce99b04 Ping-Ke Shih 2017-08-17 383 { 9ce99b04 Ping-Ke Shih 2017-08-17 384 struct phy_dm_struct *dm = (struct phy_dm_struct *)dm_void; 9ce99b04 Ping-Ke Shih 2017-08-17 385 struct dig_thres *dig_tab = &dm->dm_dig_table; 9ce99b04 Ping-Ke Shih 2017-08-17 386 s8 max_level; 9ce99b04 Ping-Ke Shih 2017-08-17 387 9ce99b04 Ping-Ke Shih 2017-08-17 388 ODM_RT_TRACE(dm, ODM_COMP_DIG, "%s()=========> level = %d\n", __func__, 9ce99b04 Ping-Ke Shih 2017-08-17 389 pause_level); 9ce99b04 Ping-Ke Shih 2017-08-17 390 9ce99b04 Ping-Ke Shih 2017-08-17 391 if ((dig_tab->pause_dig_level == 0) && 9ce99b04 Ping-Ke Shih 2017-08-17 392 (!(dm->support_ability & ODM_BB_DIG) || 9ce99b04 Ping-Ke Shih 2017-08-17 393 !(dm->support_ability & ODM_BB_FA_CNT))) { 9ce99b04 Ping-Ke Shih 2017-08-17 394 ODM_RT_TRACE( 9ce99b04 Ping-Ke Shih 2017-08-17 395 dm, ODM_COMP_DIG, 9ce99b04 Ping-Ke Shih 2017-08-17 396 "%s(): Return: support_ability DIG or FA is disabled !!\n", 9ce99b04 Ping-Ke Shih 2017-08-17 397 __func__); 9ce99b04 Ping-Ke Shih 2017-08-17 398 return; 9ce99b04 Ping-Ke Shih 2017-08-17 399 } 9ce99b04 Ping-Ke Shih 2017-08-17 400 9ce99b04 Ping-Ke Shih 2017-08-17 401 if (pause_level > DM_DIG_MAX_PAUSE_TYPE) { 9ce99b04 Ping-Ke Shih 2017-08-17 402 ODM_RT_TRACE(dm, ODM_COMP_DIG, 9ce99b04 Ping-Ke Shih 2017-08-17 403 "%s(): Return: Wrong pause level !!\n", __func__); 9ce99b04 Ping-Ke Shih 2017-08-17 404 return; 9ce99b04 Ping-Ke Shih 2017-08-17 405 } 9ce99b04 Ping-Ke Shih 2017-08-17 406 9ce99b04 Ping-Ke Shih 2017-08-17 407 ODM_RT_TRACE(dm, ODM_COMP_DIG, 9ce99b04 Ping-Ke Shih 2017-08-17 408 "%s(): pause level = 0x%x, Current value = 0x%x\n", 9ce99b04 Ping-Ke Shih 2017-08-17 409 __func__, dig_tab->pause_dig_level, igi_value); 9ce99b04 Ping-Ke Shih 2017-08-17 410 ODM_RT_TRACE( 9ce99b04 Ping-Ke Shih 2017-08-17 411 dm, ODM_COMP_DIG, 9ce99b04 Ping-Ke Shih 2017-08-17 412 "%s(): pause value = 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n", 9ce99b04 Ping-Ke Shih 2017-08-17 413 __func__, dig_tab->pause_dig_value[7], 9ce99b04 Ping-Ke Shih 2017-08-17 414 dig_tab->pause_dig_value[6], dig_tab->pause_dig_value[5], 9ce99b04 Ping-Ke Shih 2017-08-17 415 dig_tab->pause_dig_value[4], dig_tab->pause_dig_value[3], 9ce99b04 Ping-Ke Shih 2017-08-17 416 dig_tab->pause_dig_value[2], dig_tab->pause_dig_value[1], 9ce99b04 Ping-Ke Shih 2017-08-17 417 dig_tab->pause_dig_value[0]); 9ce99b04 Ping-Ke Shih 2017-08-17 418 9ce99b04 Ping-Ke Shih 2017-08-17 419 switch (pause_type) { 9ce99b04 Ping-Ke Shih 2017-08-17 420 /* Pause DIG */ 9ce99b04 Ping-Ke Shih 2017-08-17 421 case PHYDM_PAUSE: { 9ce99b04 Ping-Ke Shih 2017-08-17 422 /* Disable DIG */ 9ce99b04 Ping-Ke Shih 2017-08-17 423 odm_cmn_info_update(dm, ODM_CMNINFO_ABILITY, 9ce99b04 Ping-Ke Shih 2017-08-17 424 dm->support_ability & (~ODM_BB_DIG)); 9ce99b04 Ping-Ke Shih 2017-08-17 425 ODM_RT_TRACE(dm, ODM_COMP_DIG, "%s(): Pause DIG !!\n", 9ce99b04 Ping-Ke Shih 2017-08-17 426 __func__); 9ce99b04 Ping-Ke Shih 2017-08-17 427 9ce99b04 Ping-Ke Shih 2017-08-17 428 /* Backup IGI value */ 9ce99b04 Ping-Ke Shih 2017-08-17 429 if (dig_tab->pause_dig_level == 0) { 9ce99b04 Ping-Ke Shih 2017-08-17 430 dig_tab->igi_backup = dig_tab->cur_ig_value; 9ce99b04 Ping-Ke Shih 2017-08-17 431 ODM_RT_TRACE( 9ce99b04 Ping-Ke Shih 2017-08-17 432 dm, ODM_COMP_DIG, 9ce99b04 Ping-Ke Shih 2017-08-17 433 "%s(): Backup IGI = 0x%x, new IGI = 0x%x\n", 9ce99b04 Ping-Ke Shih 2017-08-17 434 __func__, dig_tab->igi_backup, igi_value); 9ce99b04 Ping-Ke Shih 2017-08-17 435 } 9ce99b04 Ping-Ke Shih 2017-08-17 436 9ce99b04 Ping-Ke Shih 2017-08-17 437 /* Record IGI value */ 9ce99b04 Ping-Ke Shih 2017-08-17 438 dig_tab->pause_dig_value[pause_level] = igi_value; 9ce99b04 Ping-Ke Shih 2017-08-17 439 9ce99b04 Ping-Ke Shih 2017-08-17 440 /* Update pause level */ 9ce99b04 Ping-Ke Shih 2017-08-17 441 dig_tab->pause_dig_level = 9ce99b04 Ping-Ke Shih 2017-08-17 442 (dig_tab->pause_dig_level | BIT(pause_level)); 9ce99b04 Ping-Ke Shih 2017-08-17 443 9ce99b04 Ping-Ke Shih 2017-08-17 444 /* Write new IGI value */ 9ce99b04 Ping-Ke Shih 2017-08-17 445 if (BIT(pause_level + 1) > dig_tab->pause_dig_level) { 9ce99b04 Ping-Ke Shih 2017-08-17 446 odm_write_dig(dm, igi_value); 9ce99b04 Ping-Ke Shih 2017-08-17 447 ODM_RT_TRACE(dm, ODM_COMP_DIG, 9ce99b04 Ping-Ke Shih 2017-08-17 448 "%s(): IGI of higher level = 0x%x\n", 9ce99b04 Ping-Ke Shih 2017-08-17 449 __func__, igi_value); 9ce99b04 Ping-Ke Shih 2017-08-17 450 } 9ce99b04 Ping-Ke Shih 2017-08-17 451 break; 9ce99b04 Ping-Ke Shih 2017-08-17 452 } 9ce99b04 Ping-Ke Shih 2017-08-17 453 /* Resume DIG */ 9ce99b04 Ping-Ke Shih 2017-08-17 454 case PHYDM_RESUME: { 9ce99b04 Ping-Ke Shih 2017-08-17 455 /* check if the level is illegal or not */ 9ce99b04 Ping-Ke Shih 2017-08-17 456 if ((dig_tab->pause_dig_level & (BIT(pause_level))) != 0) { 9ce99b04 Ping-Ke Shih 2017-08-17 457 dig_tab->pause_dig_level = dig_tab->pause_dig_level & 9ce99b04 Ping-Ke Shih 2017-08-17 458 (~(BIT(pause_level))); 9ce99b04 Ping-Ke Shih 2017-08-17 459 dig_tab->pause_dig_value[pause_level] = 0; 9ce99b04 Ping-Ke Shih 2017-08-17 460 ODM_RT_TRACE(dm, ODM_COMP_DIG, "%s(): Resume DIG !!\n", 9ce99b04 Ping-Ke Shih 2017-08-17 461 __func__); 9ce99b04 Ping-Ke Shih 2017-08-17 462 } else { 9ce99b04 Ping-Ke Shih 2017-08-17 463 ODM_RT_TRACE(dm, ODM_COMP_DIG, 9ce99b04 Ping-Ke Shih 2017-08-17 464 "%s(): Wrong resume level !!\n", __func__); 9ce99b04 Ping-Ke Shih 2017-08-17 465 break; 9ce99b04 Ping-Ke Shih 2017-08-17 466 } 9ce99b04 Ping-Ke Shih 2017-08-17 467 9ce99b04 Ping-Ke Shih 2017-08-17 468 /* Resume DIG */ 9ce99b04 Ping-Ke Shih 2017-08-17 469 if (dig_tab->pause_dig_level == 0) { 9ce99b04 Ping-Ke Shih 2017-08-17 470 /* Write backup IGI value */ 9ce99b04 Ping-Ke Shih 2017-08-17 471 odm_write_dig(dm, dig_tab->igi_backup); 9ce99b04 Ping-Ke Shih 2017-08-17 472 dig_tab->is_ignore_dig = true; 9ce99b04 Ping-Ke Shih 2017-08-17 473 ODM_RT_TRACE(dm, ODM_COMP_DIG, 9ce99b04 Ping-Ke Shih 2017-08-17 474 "%s(): Write original IGI = 0x%x\n", 9ce99b04 Ping-Ke Shih 2017-08-17 475 __func__, dig_tab->igi_backup); 9ce99b04 Ping-Ke Shih 2017-08-17 476 9ce99b04 Ping-Ke Shih 2017-08-17 477 /* Enable DIG */ 9ce99b04 Ping-Ke Shih 2017-08-17 478 odm_cmn_info_update(dm, ODM_CMNINFO_ABILITY, 9ce99b04 Ping-Ke Shih 2017-08-17 479 dm->support_ability | ODM_BB_DIG); 9ce99b04 Ping-Ke Shih 2017-08-17 480 break; 9ce99b04 Ping-Ke Shih 2017-08-17 481 } 9ce99b04 Ping-Ke Shih 2017-08-17 482 9ce99b04 Ping-Ke Shih 2017-08-17 483 if (BIT(pause_level) <= dig_tab->pause_dig_level) 9ce99b04 Ping-Ke Shih 2017-08-17 484 break; 9ce99b04 Ping-Ke Shih 2017-08-17 485 9ce99b04 Ping-Ke Shih 2017-08-17 486 /* Calculate the maximum level now */ 9ce99b04 Ping-Ke Shih 2017-08-17 487 for (max_level = (pause_level - 1); max_level >= 0; 9ce99b04 Ping-Ke Shih 2017-08-17 488 max_level--) { 9ce99b04 Ping-Ke Shih 2017-08-17 489 if ((dig_tab->pause_dig_level & BIT(max_level)) > 0) 9ce99b04 Ping-Ke Shih 2017-08-17 490 break; 9ce99b04 Ping-Ke Shih 2017-08-17 491 } 9ce99b04 Ping-Ke Shih 2017-08-17 492 9ce99b04 Ping-Ke Shih 2017-08-17 493 /* write IGI of lower level */ 9ce99b04 Ping-Ke Shih 2017-08-17 @494 odm_write_dig(dm, dig_tab->pause_dig_value[max_level]); 9ce99b04 Ping-Ke Shih 2017-08-17 495 ODM_RT_TRACE(dm, ODM_COMP_DIG, 9ce99b04 Ping-Ke Shih 2017-08-17 496 "%s(): Write IGI (0x%x) of level (%d)\n", __func__, 9ce99b04 Ping-Ke Shih 2017-08-17 497 dig_tab->pause_dig_value[max_level], max_level); 9ce99b04 Ping-Ke Shih 2017-08-17 498 break; 9ce99b04 Ping-Ke Shih 2017-08-17 499 } 9ce99b04 Ping-Ke Shih 2017-08-17 500 default: 9ce99b04 Ping-Ke Shih 2017-08-17 501 ODM_RT_TRACE(dm, ODM_COMP_DIG, "%s(): Wrong type !!\n", 9ce99b04 Ping-Ke Shih 2017-08-17 502 __func__); 9ce99b04 Ping-Ke Shih 2017-08-17 503 break; 9ce99b04 Ping-Ke Shih 2017-08-17 504 } 9ce99b04 Ping-Ke Shih 2017-08-17 505 9ce99b04 Ping-Ke Shih 2017-08-17 506 ODM_RT_TRACE(dm, ODM_COMP_DIG, 9ce99b04 Ping-Ke Shih 2017-08-17 507 "%s(): pause level = 0x%x, Current value = 0x%x\n", 9ce99b04 Ping-Ke Shih 2017-08-17 508 __func__, dig_tab->pause_dig_level, igi_value); 9ce99b04 Ping-Ke Shih 2017-08-17 509 ODM_RT_TRACE( 9ce99b04 Ping-Ke Shih 2017-08-17 510 dm, ODM_COMP_DIG, 9ce99b04 Ping-Ke Shih 2017-08-17 511 "%s(): pause value = 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n", 9ce99b04 Ping-Ke Shih 2017-08-17 512 __func__, dig_tab->pause_dig_value[7], 9ce99b04 Ping-Ke Shih 2017-08-17 513 dig_tab->pause_dig_value[6], dig_tab->pause_dig_value[5], 9ce99b04 Ping-Ke Shih 2017-08-17 514 dig_tab->pause_dig_value[4], dig_tab->pause_dig_value[3], 9ce99b04 Ping-Ke Shih 2017-08-17 515 dig_tab->pause_dig_value[2], dig_tab->pause_dig_value[1], 9ce99b04 Ping-Ke Shih 2017-08-17 516 dig_tab->pause_dig_value[0]); 9ce99b04 Ping-Ke Shih 2017-08-17 517 } 9ce99b04 Ping-Ke Shih 2017-08-17 518 :::::: The code at line 494 was first introduced by commit :::::: 9ce99b04b5b82fdf11e4c76b60a5f82c1e541297 staging: r8822be: Add phydm mini driver :::::: TO: Ping-Ke Shih <[email protected]> :::::: CC: Greg Kroah-Hartman <[email protected]> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
.config.gz
Description: application/gzip
