Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.9]) (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 05D221F2B88 for ; Thu, 9 Oct 2025 17:21:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.9 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760030474; cv=none; b=g+AlV+EVJdOvC61hTaskaOIHWhHgyIg9BaMJPzNsXitNEyepPHenT0FQkZwhNZPDH+63G+BnBSLTVwBind6UY4Lf2sQJLJW/9VsWUXndovtb5FDrbplRGs7G8O5crDtnrTNzhTaLuJYJDC4SwUP4uDflwLW2IQlQbJuuWrIbDj8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760030474; c=relaxed/simple; bh=CHX00py1xwgCEkbvBRjos6BM32Ofc3qiQ4cQlCKDSn8=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=O9aJlvxctcIm4Z3yifOpeypvTT4aj/RfhyVHaxDbn4GgjfwuzE8nIDkhkFBp8w1rT8apxg70NQEn4fliih8fQyDR6B3rSvvnDlt8cBfWOq+9SrnSPnUDq1dX+tJrbTHHzpAyRwAatpC0BV3yokudBMd9WCf517WjOFCI8AUzpz4= 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=n13H2obA; arc=none smtp.client-ip=192.198.163.9 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="n13H2obA" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1760030473; x=1791566473; h=date:from:to:cc:subject:message-id:mime-version; bh=CHX00py1xwgCEkbvBRjos6BM32Ofc3qiQ4cQlCKDSn8=; b=n13H2obAGL3FhALE3GnMC7KMmNMVetTIguRUPeXYqOUEj2RDD0KH7lWX ztFMC2VW/ibgcTF5NLcgvQRA4ecl/0AG6yTCnRhn8p83DNpiaafATS132 hP6wfUM9eqXLoPcJOEnSfTEbX6+/+cegjS7sKONTTFOcj/2eK8XTTVdVh O6VV4wzTa5PGTHK9eTdxbzRVBTDEsc41PWWp96b2CnKAYJT+dU9z7X8K/ M3UFnsIGTgH0QpgxTFYFrqT0xxXLSgxCp8C66fRiNa8fUpfwrHSMy15pu V2SHd4x9SVWw/WgoqmHLTOS6rY6WeItAFNgU7IOfq0Judgu+Cb1RloP9R Q==; X-CSE-ConnectionGUID: k72mumOiQF+6A2lS/4B5sg== X-CSE-MsgGUID: X0CYkrQ6QXaPvhE8f+WiXQ== X-IronPort-AV: E=McAfee;i="6800,10657,11577"; a="72930567" X-IronPort-AV: E=Sophos;i="6.19,217,1754982000"; d="scan'208";a="72930567" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by fmvoesa103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2025 10:21:10 -0700 X-CSE-ConnectionGUID: OFlhnfcqRr2NvOcMErY2Iw== X-CSE-MsgGUID: /C3TsynZSVe6VzArwM3FUA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,217,1754982000"; d="scan'208";a="180365349" Received: from lkp-server01.sh.intel.com (HELO 6a630e8620ab) ([10.239.97.150]) by orviesa009.jf.intel.com with ESMTP; 09 Oct 2025 10:21:09 -0700 Received: from kbuild by 6a630e8620ab with local (Exim 4.96) (envelope-from ) id 1v6uKA-00015q-2N; Thu, 09 Oct 2025 17:21:06 +0000 Date: Fri, 10 Oct 2025 01:20:49 +0800 From: kernel test robot To: oe-kbuild@lists.linux.dev Cc: lkp@intel.com, Dan Carpenter Subject: drivers/net/wireless/mediatek/mt76/mt7996/mac.c:1651 mt7996_msdu_page_get_from_cache() warn: can 'p' even be NULL? Message-ID: <202510100155.MS0IXhzm-lkp@intel.com> Precedence: bulk X-Mailing-List: oe-kbuild@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline BCC: lkp@intel.com CC: oe-kbuild-all@lists.linux.dev CC: linux-kernel@vger.kernel.org TO: Rex Lu CC: Felix Fietkau CC: Lorenzo Bianconi tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: ec714e371f22f716a04e6ecb2a24988c92b26911 commit: b1e58e137b61693f12da037d2d50aca9c2140a43 wifi: mt76: mt7996: Introduce RRO MSDU callbacks date: 3 weeks ago :::::: branch date: 15 hours ago :::::: commit date: 3 weeks ago config: x86_64-randconfig-161-20251009 (https://download.01.org/0day-ci/archive/20251010/202510100155.MS0IXhzm-lkp@intel.com/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) 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/202510100155.MS0IXhzm-lkp@intel.com/ New smatch warnings: drivers/net/wireless/mediatek/mt76/mt7996/mac.c:1651 mt7996_msdu_page_get_from_cache() warn: can 'p' even be NULL? Old smatch warnings: drivers/net/wireless/mediatek/mt76/mt7996/mac.c:483 mt7996_mac_fill_rx() warn: potential spectre issue 'dev->mt76.phys' [r] drivers/net/wireless/mediatek/mt76/mt7996/mac.c:484 mt7996_mac_fill_rx() warn: possible spectre second half. 'mphy' drivers/net/wireless/mediatek/mt76/mt7996/mac.c:3061 mt7996_mac_twt_sched_list_add() error: uninitialized symbol 'start_tsf'. vim +/p +1651 drivers/net/wireless/mediatek/mt76/mt7996/mac.c 98686cd21624c7 Shayne Chen 2022-11-22 1640 b1e58e137b6169 Rex Lu 2025-09-09 1641 static struct mt7996_msdu_page * b1e58e137b6169 Rex Lu 2025-09-09 1642 mt7996_msdu_page_get_from_cache(struct mt7996_dev *dev) b1e58e137b6169 Rex Lu 2025-09-09 1643 { b1e58e137b6169 Rex Lu 2025-09-09 1644 struct mt7996_msdu_page *p = NULL; b1e58e137b6169 Rex Lu 2025-09-09 1645 b1e58e137b6169 Rex Lu 2025-09-09 1646 spin_lock(&dev->wed_rro.lock); b1e58e137b6169 Rex Lu 2025-09-09 1647 b1e58e137b6169 Rex Lu 2025-09-09 1648 if (!list_empty(&dev->wed_rro.page_cache)) { b1e58e137b6169 Rex Lu 2025-09-09 1649 p = list_first_entry(&dev->wed_rro.page_cache, b1e58e137b6169 Rex Lu 2025-09-09 1650 struct mt7996_msdu_page, list); b1e58e137b6169 Rex Lu 2025-09-09 @1651 if (p) b1e58e137b6169 Rex Lu 2025-09-09 1652 list_del(&p->list); b1e58e137b6169 Rex Lu 2025-09-09 1653 } b1e58e137b6169 Rex Lu 2025-09-09 1654 b1e58e137b6169 Rex Lu 2025-09-09 1655 spin_unlock(&dev->wed_rro.lock); b1e58e137b6169 Rex Lu 2025-09-09 1656 b1e58e137b6169 Rex Lu 2025-09-09 1657 return p; b1e58e137b6169 Rex Lu 2025-09-09 1658 } b1e58e137b6169 Rex Lu 2025-09-09 1659 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki