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X-CSE-ConnectionGUID: Nr/yyTQVTCq+LFjDcitoFA== X-CSE-MsgGUID: msfF5/66SjmTfT8E3uGKFg== X-IronPort-AV: E=McAfee;i="6800,10657,11919"; a="101823830" X-IronPort-AV: E=Sophos;i="6.27,128,1787036400"; d="scan'208";a="101823830" Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by orvoesa104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Sep 2026 06:23:15 -0700 X-CSE-ConnectionGUID: 8HjcdBQSSVO5cqClx3ddNg== X-CSE-MsgGUID: WGfC1cVuS2qI+ePdya82sQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,128,1787036400"; d="scan'208";a="275176373" Received: from igk-lkp-server01.igk.intel.com (HELO 04362d00df5a) ([10.211.93.152]) by fmviesa008.fm.intel.com with ESMTP; 28 Sep 2026 06:23:12 -0700 Received: from kbuild by 04362d00df5a with local (Exim 4.98.2) (envelope-from ) id 1xBBJi-0000000010N-1jbE; Mon, 28 Sep 2026 13:22:50 +0000 Date: Mon, 28 Sep 2026 15:21:58 +0200 From: kernel test robot To: oe-kbuild@lists.linux.dev Cc: lkp@intel.com, Dan Carpenter Subject: [akpm-mm:mm-unstable 462/660] drivers/hid/hid-steam.c:557 steam_send_report_id() warn: check sign expansion for '__UNIQUE_ID_x__441' Message-ID: <202609281522.oy2lIVoj-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: oe-kbuild@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: BCC: lkp@intel.com CC: oe-kbuild-all@lists.linux.dev CC: David Hildenbrand CC: Andrew Morton CC: Linux Memory Management List CC: mm-commits@vger.kernel.org TO: "Lorenzo Stoakes (ARM)" CC: Andrew Morton CC: Linux Memory Management List tree: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-unstable head: 57e4ac91fc62d75d84b5a03827a19ceb4094ecd9 commit: 2da9da558c118486ca252a96ff117b09583cf558 [462/660] mm: add mmap action for discontiguous kernel page mapping :::::: branch date: 9 hours ago :::::: commit date: 9 hours ago config: alpha-randconfig-r2201-20260928 (https://download.01.org/0day-ci/archive/20260928/202609281522.oy2lIVoj-lkp@intel.com/config) compiler: alpha-linux-gcc (GCC) 16.1.0 smatch: v0.5.0-9187-g5189e3fb If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Reported-by: Dan Carpenter | Closes: https://lore.kernel.org/r/202609281522.oy2lIVoj-lkp@intel.com/ smatch warnings: drivers/hid/hid-steam.c:557 steam_send_report_id() warn: check sign expansion for '__UNIQUE_ID_x__441' vim +/__UNIQUE_ID_x__441 +557 drivers/hid/hid-steam.c c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 516 0a80b4e8ec6a6e Vicki Pfau 2026-08-11 517 static int steam_send_report_id(struct steam_device *steam, 0a80b4e8ec6a6e Vicki Pfau 2026-08-11 518 u8 *cmd, int size, u8 report_id) c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 519 { c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 520 struct hid_report *r; c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 521 u8 *buf; c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 522 unsigned int retries = 50; c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 523 int ret; 0a80b4e8ec6a6e Vicki Pfau 2026-08-11 524 u32 len; c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 525 0a80b4e8ec6a6e Vicki Pfau 2026-08-11 526 r = steam->hdev->report_enum[HID_FEATURE_REPORT].report_id_hash[report_id]; cd11d1a6114bd4 Lee Jones 2022-07-08 527 if (!r) { 0a80b4e8ec6a6e Vicki Pfau 2026-08-11 528 hid_err(steam->hdev, "No HID_FEATURE_REPORT present for ID %u\n", report_id); cd11d1a6114bd4 Lee Jones 2022-07-08 529 return -EINVAL; cd11d1a6114bd4 Lee Jones 2022-07-08 530 } cd11d1a6114bd4 Lee Jones 2022-07-08 531 0a80b4e8ec6a6e Vicki Pfau 2026-08-11 532 len = hid_report_len(r); 0a80b4e8ec6a6e Vicki Pfau 2026-08-11 533 if (len < 64) c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 534 return -EINVAL; c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 535 c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 536 buf = hid_alloc_report_buf(r, GFP_KERNEL); c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 537 if (!buf) c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 538 return -ENOMEM; c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 539 0a80b4e8ec6a6e Vicki Pfau 2026-08-11 540 /* The report ID is always consistent */ 0a80b4e8ec6a6e Vicki Pfau 2026-08-11 541 buf[0] = report_id; c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 542 memcpy(buf + 1, cmd, size); c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 543 de435b770cd949 Vicki Pfau 2026-07-29 544 hid_dbg(steam->hdev, "Sending report %*ph\n", size, cmd); de435b770cd949 Vicki Pfau 2026-07-29 545 0a80b4e8ec6a6e Vicki Pfau 2026-08-11 546 if (!(steam->quirks & STEAM_QUIRK_IBEX)) 0a80b4e8ec6a6e Vicki Pfau 2026-08-11 547 len += 1; 0a80b4e8ec6a6e Vicki Pfau 2026-08-11 548 c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 549 /* c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 550 * Sometimes the wireless controller fails with EPIPE c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 551 * when sending a feature report. 0a80b4e8ec6a6e Vicki Pfau 2026-08-11 552 * Doing a HID_REQ_SET_REPORT and waiting for a while c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 553 * seems to fix that. c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 554 */ c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 555 do { 0a80b4e8ec6a6e Vicki Pfau 2026-08-11 556 ret = hid_hw_raw_request(steam->hdev, report_id, 0a80b4e8ec6a6e Vicki Pfau 2026-08-11 @557 buf, max(size + 1, len), c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 558 HID_FEATURE_REPORT, HID_REQ_SET_REPORT); c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 559 if (ret != -EPIPE) c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 560 break; c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 561 msleep(20); c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 562 } while (--retries); c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 563 c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 564 kfree(buf); cfa66cba6d02ff Vicki Pfau 2026-08-11 565 /* cfa66cba6d02ff Vicki Pfau 2026-08-11 566 * Don't log if the failure is -ENODEV, as this cfa66cba6d02ff Vicki Pfau 2026-08-11 567 * can happen normally on disconnect. cfa66cba6d02ff Vicki Pfau 2026-08-11 568 */ cfa66cba6d02ff Vicki Pfau 2026-08-11 569 if (ret < 0 && ret != -ENODEV) c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 570 hid_err(steam->hdev, "%s: error %d (%*ph)\n", __func__, c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 571 ret, size, cmd); c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 572 return ret; c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 573 } c164d6abf3841f Rodrigo Rivas Costa 2018-04-16 574 :::::: The code at line 557 was first introduced by commit :::::: 0a80b4e8ec6a6e40937c7abdf8fb2ebe6cc7c1e5 HID: steam: Initial 2026 Steam Controller support :::::: TO: Vicki Pfau :::::: CC: Jiri Kosina -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki