From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.14]) (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 F189D3ADBAC; Thu, 8 Oct 2026 16:49:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.14 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791478202; cv=none; b=JbxahD0c2Q6k0F2hqi2Oi2vtfktVQFllasgaeD8zFUyBEPOoxP8cgyB7iqJjRRDetdzTWQ0eFd/nj5PH2FgBP6Y3HT2Eo71LpDcz3KXg5e5xOrZmhex1DZBpf2e8GPJnlt0dWoMr6vDQ2piPfUPAa7jMjhfXmwt1fqJhG0UFs4U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791478202; c=relaxed/simple; bh=wEpyQLioBMW4Ub+2PydT+0oLGLWVpaDngxSSXhXf2Oc=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=WCxn66B0wgk6nnvZ9cChHuUBKccpb9b4D29Z7o2AZToxMO9WyDAqgzvNRmhN0TKnBKqtH2IVW+ikXW1kKWhu7ZRppYihL5kfeSxqqFEJALXU4QGBQ5weva+fziEZUNaOtD5mtYBz+aMEJH5lXpdfbfICYipLQ87+0wp2mw3MAVc= 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=JROKLuid; arc=none smtp.client-ip=192.198.163.14 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="JROKLuid" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1791478199; x=1823014199; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=wEpyQLioBMW4Ub+2PydT+0oLGLWVpaDngxSSXhXf2Oc=; b=JROKLuidzgMny1H58WWMd6WB307kGWVM+my20yXrnKReLgz5athyAp/S dWfhFE6uQPAgbrptVL/1+/QFn0gz4nZyi6SsXtZsONWVPB8dm3fALMEzD Y4uTSJsHNEThySyDmU8TDm3ZlEDR1XqNLtFrkEMwt0xDgFJO0V1UXH0eu b6FvRpk1D7ZCG8pmykGSMH8yG2iazgFmbdTYBZQrDiBNNrObOSgFTN26f 5Yv1ACO00hZtqgin7OzWBJRnbXycyAXun6fr3QWPjkZCtnQpj4AwEcLxb +fZqOlFkufKBH9SEvf8oXq7sBb6CUMx5M3ZiJkuES/MZfI92kzh5UJbhe Q==; X-CSE-ConnectionGUID: 4zunkUHjQUClrVJgvlvTKg== X-CSE-MsgGUID: mbYk6qzlROSWadx0qswPsg== X-IronPort-AV: E=McAfee;i="6800,10657,11928"; a="267531" X-IronPort-AV: E=Sophos;i="6.27,146,1787036400"; d="scan'208";a="267531" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by fmvoesa108.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Oct 2026 09:49:58 -0700 X-CSE-ConnectionGUID: yh4TIP33S8yrX2oYUrn73w== X-CSE-MsgGUID: 3VsiRZ6DRRSEr/VEVIds9g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,146,1787036400"; d="scan'208";a="426295" Received: from lkp-server01.sh.intel.com (HELO 0caa9d2d175c) ([10.239.97.150]) by fmviesa006.fm.intel.com with ESMTP; 08 Oct 2026 09:49:55 -0700 Received: from kbuild by 0caa9d2d175c with local (Exim 4.98.2) (envelope-from ) id 1xErJX-000000004fS-0kVy; Thu, 08 Oct 2026 16:49:51 +0000 Date: Fri, 9 Oct 2026 00:49:37 +0800 From: kernel test robot To: Emerson Busson , mhklinux@outlook.com Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org, netdev@vger.kernel.org Subject: Re: [PATCH v2 10/14] hv: vmbus: pin buffer pages across UIO mmap to close the reclaim race Message-ID: <202610090058.hvXsWpoT-lkp@intel.com> References: <20261007190752.336426-11-emersonbusson@gmail.com> Precedence: bulk X-Mailing-List: linux-hyperv@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261007190752.336426-11-emersonbusson@gmail.com> Hi Emerson, kernel test robot noticed the following build warnings: [auto build test WARNING on char-misc/char-misc-testing] [also build test WARNING on char-misc/char-misc-next char-misc/char-misc-linus linus/master v7.3-rc6 next-20261008] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Emerson-Busson/hv-vmbus-convert-ring-backing-through-the-chunk-allocator/20261007-160739 base: char-misc/char-misc-testing patch link: https://lore.kernel.org/r/20261007190752.336426-11-emersonbusson%40gmail.com patch subject: [PATCH v2 10/14] hv: vmbus: pin buffer pages across UIO mmap to close the reclaim race config: i386-randconfig-1001-20261008 (https://download.01.org/0day-ci/archive/20261009/202610090058.hvXsWpoT-lkp@intel.com/config) compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261009/202610090058.hvXsWpoT-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/202610090058.hvXsWpoT-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from drivers/uio/uio_hv_generic.c:428: >> drivers/uio/uio_hv_generic_mmap_test.c:36:34: warning: implicit conversion from 'u64' (aka 'unsigned long long') to 'unsigned long' changes value from 18446744073709551615 to 4294967295 [-Wconstant-conversion] 36 | hv_uio_mmap_range_valid(8, U64_MAX, 1)); | ~~~~~~~~~~~~~~~~~~~~~~~ ^~~~~~~ include/linux/limits.h:25:19: note: expanded from macro 'U64_MAX' 25 | #define U64_MAX ((u64)~0ULL) | ^~~~~~~~~~ include/kunit/test.h:1014:31: note: expanded from macro 'KUNIT_EXPECT_FALSE' 1014 | KUNIT_EXPECT_FALSE_MSG(test, condition, NULL) | ^~~~~~~~~ include/kunit/test.h:1019:7: note: expanded from macro 'KUNIT_EXPECT_FALSE_MSG' 1019 | condition, \ | ^~~~~~~~~ include/kunit/test.h:812:10: note: expanded from macro 'KUNIT_FALSE_MSG_ASSERTION' 812 | condition, \ | ^~~~~~~~~ include/kunit/test.h:788:16: note: expanded from macro 'KUNIT_UNARY_ASSERTION' 788 | if (likely(!!(condition_) == !!expected_true_)) \ | ^~~~~~~~~~ include/linux/compiler.h:76:40: note: expanded from macro 'likely' 76 | # define likely(x) __builtin_expect(!!(x), 1) | ^ 1 warning generated. vim +36 drivers/uio/uio_hv_generic_mmap_test.c 27 28 static void hv_uio_ring_mmap_range_test(struct kunit *test) 29 { 30 KUNIT_EXPECT_TRUE(test, hv_uio_mmap_range_valid(8, 0, 8)); 31 KUNIT_EXPECT_TRUE(test, hv_uio_mmap_range_valid(8, 4, 4)); 32 KUNIT_EXPECT_FALSE(test, hv_uio_mmap_range_valid(8, 8, 1)); 33 KUNIT_EXPECT_FALSE(test, hv_uio_mmap_range_valid(8, 7, 2)); 34 KUNIT_EXPECT_FALSE(test, hv_uio_mmap_range_valid(8, 0, 0)); 35 KUNIT_EXPECT_FALSE(test, > 36 hv_uio_mmap_range_valid(8, U64_MAX, 1)); 37 } 38 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki