From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.15]) (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 D1D8A296BD2 for ; Fri, 17 Apr 2026 07:20:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.15 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776410452; cv=none; b=DE7ALPYYxxAv29HusyKIra4QxaIF++xCozwyV9jcsvvDKFqbDeJj5QKDDG33jVbGo0GjIRbHlp3MxorUnHw2fwLJjIegB+7YJ/YyRglkg6GR5QYoYaJIS4ofsumanQ0X45h7Ea/k9cKcMAht6rSgZRcVFHkjUxUJaVslFVabeAc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776410452; c=relaxed/simple; bh=HnSh9SGcV66o6XAlMMruzX2MPwT63bvlGM7M7H8wAIg=; h=Date:From:To:Cc:Subject:Message-ID; b=P52YxLXuPq9S1eDkbNPv7+NZkXHzBqT0IjLz1zcn+gqsnS0iy3eOqWoFI8tuWK+wD8ByIxmcI5p2OVm5mIR9eIvZeD3cqWZeoqGpzIjxivmZ5G/TZni3f95ZgD8vJFGn2sbj74PzevdFWcffA7UBzMMrBdBbH8FwnlrVkDj7k2o= 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=QjLMUQnl; arc=none smtp.client-ip=198.175.65.15 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="QjLMUQnl" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1776410451; x=1807946451; h=date:from:to:cc:subject:message-id; bh=HnSh9SGcV66o6XAlMMruzX2MPwT63bvlGM7M7H8wAIg=; b=QjLMUQnlr9ZVfKkIXUk+60PR40juzA9ClngXTr2nseBQC85E22pzC8N7 I8NJ+LuI5UKrA5bWS4ALAuJU06M6eqtfVtNf6PWUKRVnB6c784NA0fU/6 83RzWD82Qrw9xJ6QHS9szwnmBibZcXg+eYR1dzco11H695YheLw80s1TM q7x4RQn1vlXwo5Qqky1Ii3/9hs1gZ1i04t6Ip8gx314JcPp2siRIlIVJU 4ckY/zeMMm+rCrFzg97LHU2waHgU2KueH5Jlis8NyTDkGU7HsK6hUGSI1 p51oYRNh7TK/Au6gtmQmx1VLEHkRa27KtwumSQ8boN1+eoDrCneSUEj4R w==; X-CSE-ConnectionGUID: IIPVLLYZQmGyJe8R0STAnA== X-CSE-MsgGUID: l84M4YHzT5WKgYdM2zv4eQ== X-IronPort-AV: E=McAfee;i="6800,10657,11761"; a="81020699" X-IronPort-AV: E=Sophos;i="6.23,183,1770624000"; d="scan'208";a="81020699" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by orvoesa107.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Apr 2026 00:20:50 -0700 X-CSE-ConnectionGUID: w+aDemP0Rkmzh8vmog+HSg== X-CSE-MsgGUID: vj1TvINMRLCLVmXCQy125Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,183,1770624000"; d="scan'208";a="268983338" Received: from igk-lkp-server01.igk.intel.com (HELO bdf09bfdbd5f) ([10.211.93.152]) by orviesa001.jf.intel.com with ESMTP; 17 Apr 2026 00:20:49 -0700 Received: from kbuild by bdf09bfdbd5f with local (Exim 4.98.2) (envelope-from ) id 1wDdVO-000000001GH-3yfN; Fri, 17 Apr 2026 07:20:46 +0000 Date: Fri, 17 Apr 2026 09:19:56 +0200 From: kernel test robot To: Asahi Lina Cc: oe-kbuild-all@lists.linux.dev, Janne Grunau Subject: [asahilinux:bits/250-aop 34/69] warning: length comparison to zero Message-ID: <202604170958.8AwfIZnj-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Hi Asahi, FYI, the error/warning still remains. tree: https://github.com/AsahiLinux/linux bits/250-aop head: 234b16b06a9869c5885af57b2853412e854c1216 commit: 92fe4dbd22e7faafad04ddf06d732e336ea7be98 [34/69] Rust: io: Add memcpy_fromio wrapper config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20260417/202604170958.8AwfIZnj-lkp@intel.com/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) rustc: rustc 1.88.0 (6b00bc388 2025-06-23) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260417/202604170958.8AwfIZnj-lkp@intel.com/reproduce) 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 | Closes: https://lore.kernel.org/oe-kbuild-all/202604170958.8AwfIZnj-lkp@intel.com/ All warnings (new ones prefixed by >>): >> warning: length comparison to zero --> rust/kernel/io.rs:283:12 | 283 | if buffer.len() == 0 || !Self::length_valid(offset, buffer.len(), self.maxsize()) { | ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `buffer.is_empty()` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero = note: `-W clippy::len-zero` implied by `-W clippy::all` = help: to override `-W clippy::all` add `#[allow(clippy::len_zero)]` -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki