From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7AFA5442399 for ; Mon, 12 Oct 2026 12:47:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.17 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791809222; cv=none; b=CKgIR5SsCvbgHHDYwq1ZIOWg/P+b0BRcX552pRM4uTBwxmTAe52HboIC714act76SuiHl5Vd2SMw6FFQ745MGamG9gtm0KGjXcoquJFZw1g3KKURAJTkUQxAmEMwVt2iT8TJaTiI5Q+nZpP0KEwm0uOaNciJkSgZJKeJJf+edEE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791809222; c=relaxed/simple; bh=tJJXTTQKMhnxJubwejN9ky0ic1dZ8r0W4cFwdHCEYHk=; h=Date:From:To:Cc:Subject:Message-ID; b=Ln7iZCmLcqokWfHDAHXP7aKqbmhy1VUn3DC+koMrMbAja0AqoXoeIEoYlZ/OSJJWUDj3wcAx+tbLB1KRjvt+gsAJtkUPw6Q+rtBcgd90CLo/4LZjxH7ouPrcqICIzQHC/jtyXZZ8UkOlMamXy1T2i7B9eHpyGksrRJC3Y7yWTzc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=cjzK4MMc; arc=none smtp.client-ip=198.175.65.17 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="cjzK4MMc" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1791809220; x=1823345220; h=date:from:to:cc:subject:message-id; bh=tJJXTTQKMhnxJubwejN9ky0ic1dZ8r0W4cFwdHCEYHk=; b=cjzK4MMcnQDlZE1pual5YzLhsjg/JfBMuWKLlqTQO2/Cp2pUBPOulWG/ 5u6Ic7/K5OoJL5VL7uNKlPEjojJWGuiUSCw4LamE3mvgOIN9JCcego1l5 FTWf9U2ROZnFzxDNdmE8PXEMDk3ieHu53gOqJNnvb5hXyUXvBO9RXPvYU 0EIjxzHHtGMsehtsN4c+TkqTAW1iha0bKxbHyXfRUA41IFU9EjD/PoI+Q a31VpCXm0JcYPtBKHn6HO7Tg0cHPvTaiUCeI4Bmmwd4dwhzAeLuKRvyKV yLptVNgBvrIYTj/QapDkdb9eHkMgcBDPZ1wjjK49V/9h8oUeZRwB9kraf Q==; X-CSE-ConnectionGUID: w0wzS+o9T72uaaXNJQnTOA== X-CSE-MsgGUID: Vvg73C+CRw2J/yoiwroXVw== X-IronPort-AV: E=McAfee;i="6800,10657,11932"; a="525796" X-IronPort-AV: E=Sophos;i="6.27,153,1787036400"; d="scan'208";a="525796" Received: from fmviesa012.fm.intel.com ([10.60.135.152]) by orvoesa109.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Oct 2026 05:46:59 -0700 X-CSE-ConnectionGUID: e9MQRtXrTdWxkDjk1K796Q== X-CSE-MsgGUID: mkjOA0tXTuKR9C6lUCeyqA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,153,1787036400"; d="scan'208";a="2678612" Received: from igk-lkp-server01.igk.intel.com (HELO d0de6c2a75a7) ([10.211.93.152]) by fmviesa012.fm.intel.com with ESMTP; 12 Oct 2026 05:46:59 -0700 Received: from kbuild by d0de6c2a75a7 with local (Exim 4.98.2) (envelope-from ) id 1xGFQe-00000000A3j-0l8s; Mon, 12 Oct 2026 12:46:56 +0000 Date: Mon, 12 Oct 2026 14:46:27 +0200 From: kernel test robot To: oe-kbuild@lists.linux.dev Cc: lkp@intel.com, Dan Carpenter Subject: [akpm-mm:mm-unstable 149/303] drivers/hid/hid-steam.c:557 steam_send_report_id() warn: check sign expansion for '__UNIQUE_ID_x__540' Message-ID: <202610121423.q00d8Va9-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: Unfiltered warning: this smatch report is sent as-is and has not been reviewed for false positives, so please treat it with due skepticism. 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: 4a28cc6bc038b2b357d448c472a949d9bb2c404f commit: 3aacda1a97ea9d715c3c9256c9db9f86b9e6c8dd [149/303] mm: add mmap action for discontiguous kernel page mapping :::::: branch date: 7 hours ago :::::: commit date: 7 hours ago config: s390-randconfig-r2200-20261012 (https://download.01.org/0day-ci/archive/20261012/202610121423.q00d8Va9-lkp@intel.com/config) compiler: s390-linux-gcc (GCC) 8.5.0 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/202610121423.q00d8Va9-lkp@intel.com/ smatch warnings: drivers/hid/hid-steam.c:557 steam_send_report_id() warn: check sign expansion for '__UNIQUE_ID_x__540' vim +/__UNIQUE_ID_x__540 +557 drivers/hid/hid-steam.c c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 516 0a80b4e8ec6a6e4 Vicki Pfau 2026-08-11 517 static int steam_send_report_id(struct steam_device *steam, 0a80b4e8ec6a6e4 Vicki Pfau 2026-08-11 518 u8 *cmd, int size, u8 report_id) c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 519 { c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 520 struct hid_report *r; c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 521 u8 *buf; c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 522 unsigned int retries = 50; c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 523 int ret; 0a80b4e8ec6a6e4 Vicki Pfau 2026-08-11 524 u32 len; c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 525 0a80b4e8ec6a6e4 Vicki Pfau 2026-08-11 526 r = steam->hdev->report_enum[HID_FEATURE_REPORT].report_id_hash[report_id]; cd11d1a6114bd4b Lee Jones 2022-07-08 527 if (!r) { 0a80b4e8ec6a6e4 Vicki Pfau 2026-08-11 528 hid_err(steam->hdev, "No HID_FEATURE_REPORT present for ID %u\n", report_id); cd11d1a6114bd4b Lee Jones 2022-07-08 529 return -EINVAL; cd11d1a6114bd4b Lee Jones 2022-07-08 530 } cd11d1a6114bd4b Lee Jones 2022-07-08 531 0a80b4e8ec6a6e4 Vicki Pfau 2026-08-11 532 len = hid_report_len(r); 0a80b4e8ec6a6e4 Vicki Pfau 2026-08-11 533 if (len < 64) c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 534 return -EINVAL; c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 535 c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 536 buf = hid_alloc_report_buf(r, GFP_KERNEL); c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 537 if (!buf) c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 538 return -ENOMEM; c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 539 0a80b4e8ec6a6e4 Vicki Pfau 2026-08-11 540 /* The report ID is always consistent */ 0a80b4e8ec6a6e4 Vicki Pfau 2026-08-11 541 buf[0] = report_id; c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 542 memcpy(buf + 1, cmd, size); c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 543 de435b770cd9492 Vicki Pfau 2026-07-29 544 hid_dbg(steam->hdev, "Sending report %*ph\n", size, cmd); de435b770cd9492 Vicki Pfau 2026-07-29 545 0a80b4e8ec6a6e4 Vicki Pfau 2026-08-11 546 if (!(steam->quirks & STEAM_QUIRK_IBEX)) 0a80b4e8ec6a6e4 Vicki Pfau 2026-08-11 547 len += 1; 0a80b4e8ec6a6e4 Vicki Pfau 2026-08-11 548 c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 549 /* c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 550 * Sometimes the wireless controller fails with EPIPE c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 551 * when sending a feature report. 0a80b4e8ec6a6e4 Vicki Pfau 2026-08-11 552 * Doing a HID_REQ_SET_REPORT and waiting for a while c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 553 * seems to fix that. c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 554 */ c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 555 do { 0a80b4e8ec6a6e4 Vicki Pfau 2026-08-11 556 ret = hid_hw_raw_request(steam->hdev, report_id, 0a80b4e8ec6a6e4 Vicki Pfau 2026-08-11 @557 buf, max(size + 1, len), c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 558 HID_FEATURE_REPORT, HID_REQ_SET_REPORT); c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 559 if (ret != -EPIPE) c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 560 break; c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 561 msleep(20); c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 562 } while (--retries); c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 563 c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 564 kfree(buf); cfa66cba6d02ff2 Vicki Pfau 2026-08-11 565 /* cfa66cba6d02ff2 Vicki Pfau 2026-08-11 566 * Don't log if the failure is -ENODEV, as this cfa66cba6d02ff2 Vicki Pfau 2026-08-11 567 * can happen normally on disconnect. cfa66cba6d02ff2 Vicki Pfau 2026-08-11 568 */ cfa66cba6d02ff2 Vicki Pfau 2026-08-11 569 if (ret < 0 && ret != -ENODEV) c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 570 hid_err(steam->hdev, "%s: error %d (%*ph)\n", __func__, c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 571 ret, size, cmd); c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 572 return ret; c164d6abf3841ff Rodrigo Rivas Costa 2018-04-16 573 } c164d6abf3841ff 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