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 7F0E63ACF17; Thu, 8 Oct 2026 17:03:04 +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=1791478987; cv=none; b=Q5ZRED+oWGSVcsQxj8sPRMDt34RKLlShwhbPTnGEO4hp/SGv4DTIICABqLI2ai/Oyd1IjtJIcJ7bg38XQCyAfI+/UjynlfdI7bqvizOOuvrm0hL9WawmMtPyY+a0Yx43+4WD+EEvtWLbKIDV1wTBD4tfoZuFgVSSs1aNgHXMMsA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791478987; c=relaxed/simple; bh=J9cx9pMDMvILCUgaH6jkkc0B9b6i+Cq9CtRvXhNbwTE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=SPuFIvn1qH0xdyCgO6sECzTrq3xssE04WV02rwMdQZuGue0jeSp192cOQ9iaWQ7djRcEM4Bc/aTb712kh/TV5ksOQa34Oobprdh8qotw5Ez51FI9WGhePhsca81ODHjoRDiceD3K+uJGGybQoHYpxAvrJftU6BU2OGNdkyGU6iI= 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=jKYgBGYE; 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="jKYgBGYE" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1791478985; x=1823014985; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=J9cx9pMDMvILCUgaH6jkkc0B9b6i+Cq9CtRvXhNbwTE=; b=jKYgBGYEX5W0krxYn1PpYG9DgAZ7uvzYma4eHs8KdY+L6D+4qr6+JGD2 xrk/tdz7muBRG1224qt1chBTAmt6BO4gkVGQBhsQ9vXZaaBm2IucK2zKh IifsMDxbFIT9u0i3g4Hxz/nFJ/rfx417qE81VkbnjkDG5pgq9paDNcmyc drx8vAOPO5ArQlETvkWdLIM9O+ItHPmKgSlQ09tjwsMRshvsuvoQoL1qf 3kwQllZgKdCurTJ/9fWpzW2aeJ8PZ8Pt/eP1v6nIh7xoIchOHqsfuobrm ezDyW+Vw98bM2hj4ci6FKbFMpB1BMUbrbqvNUICmMRJRkIqSfSdnSFIDt A==; X-CSE-ConnectionGUID: lFGVUVyYSPW3R8SFIDfysg== X-CSE-MsgGUID: s/z4s2k9RjeeJjXddtMYmg== X-IronPort-AV: E=McAfee;i="6800,10657,11928"; a="268902" X-IronPort-AV: E=Sophos;i="6.27,146,1787036400"; d="scan'208";a="268902" 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 10:03:04 -0700 X-CSE-ConnectionGUID: jTsoPRl6S6+tTa4GE81akw== X-CSE-MsgGUID: Dc6OB/68R4e8kzQ2gWr6cA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,146,1787036400"; d="scan'208";a="428776" Received: from lkp-server01.sh.intel.com (HELO 0caa9d2d175c) ([10.239.97.150]) by fmviesa006.fm.intel.com with ESMTP; 08 Oct 2026 10:03:00 -0700 Received: from kbuild by 0caa9d2d175c with local (Exim 4.98.2) (envelope-from ) id 1xErWC-000000004hw-3Viu; Thu, 08 Oct 2026 17:02:56 +0000 Date: Fri, 9 Oct 2026 01:02:31 +0800 From: kernel test robot To: Emerson Busson , mhklinux@outlook.com Cc: 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: <202610090020.wViiihcQ-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-1013-20261008 (https://download.01.org/0day-ci/archive/20261009/202610090020.wViiihcQ-lkp@intel.com/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261009/202610090020.wViiihcQ-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/202610090020.wViiihcQ-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from include/linux/dev_printk.h:14, from include/linux/device.h:15, from drivers/uio/uio_hv_generic.c:22: drivers/uio/uio_hv_generic_mmap_test.c: In function 'hv_uio_ring_mmap_range_test': >> include/linux/limits.h:25:25: warning: conversion from 'long long unsigned int' to 'long unsigned int' changes value from '18446744073709551615' to '4294967295' [-Woverflow] 25 | #define U64_MAX ((u64)~0ULL) | ^~~~~~~~~~~~ include/linux/compiler.h:76:45: note: in definition of macro 'likely' 76 | # define likely(x) __builtin_expect(!!(x), 1) | ^ include/kunit/test.h:810:9: note: in expansion of macro 'KUNIT_UNARY_ASSERTION' 810 | KUNIT_UNARY_ASSERTION(test, \ | ^~~~~~~~~~~~~~~~~~~~~ include/kunit/test.h:1017:9: note: in expansion of macro 'KUNIT_FALSE_MSG_ASSERTION' 1017 | KUNIT_FALSE_MSG_ASSERTION(test, \ | ^~~~~~~~~~~~~~~~~~~~~~~~~ include/kunit/test.h:1014:9: note: in expansion of macro 'KUNIT_EXPECT_FALSE_MSG' 1014 | KUNIT_EXPECT_FALSE_MSG(test, condition, NULL) | ^~~~~~~~~~~~~~~~~~~~~~ drivers/uio/uio_hv_generic_mmap_test.c:35:9: note: in expansion of macro 'KUNIT_EXPECT_FALSE' 35 | KUNIT_EXPECT_FALSE(test, | ^~~~~~~~~~~~~~~~~~ drivers/uio/uio_hv_generic_mmap_test.c:36:55: note: in expansion of macro 'U64_MAX' 36 | hv_uio_mmap_range_valid(8, U64_MAX, 1)); | ^~~~~~~ vim +25 include/linux/limits.h 3c9d017cc283df Andy Shevchenko 2023-08-04 14 54d50897d544c8 Masahiro Yamada 2019-03-07 15 #define U8_MAX ((u8)~0U) 54d50897d544c8 Masahiro Yamada 2019-03-07 16 #define S8_MAX ((s8)(U8_MAX >> 1)) 54d50897d544c8 Masahiro Yamada 2019-03-07 17 #define S8_MIN ((s8)(-S8_MAX - 1)) 54d50897d544c8 Masahiro Yamada 2019-03-07 18 #define U16_MAX ((u16)~0U) 54d50897d544c8 Masahiro Yamada 2019-03-07 19 #define S16_MAX ((s16)(U16_MAX >> 1)) 54d50897d544c8 Masahiro Yamada 2019-03-07 20 #define S16_MIN ((s16)(-S16_MAX - 1)) 54d50897d544c8 Masahiro Yamada 2019-03-07 21 #define U32_MAX ((u32)~0U) 3f50f132d8400e John Fastabend 2020-03-30 22 #define U32_MIN ((u32)0) 54d50897d544c8 Masahiro Yamada 2019-03-07 23 #define S32_MAX ((s32)(U32_MAX >> 1)) 54d50897d544c8 Masahiro Yamada 2019-03-07 24 #define S32_MIN ((s32)(-S32_MAX - 1)) 54d50897d544c8 Masahiro Yamada 2019-03-07 @25 #define U64_MAX ((u64)~0ULL) 54d50897d544c8 Masahiro Yamada 2019-03-07 26 #define S64_MAX ((s64)(U64_MAX >> 1)) 54d50897d544c8 Masahiro Yamada 2019-03-07 27 #define S64_MIN ((s64)(-S64_MAX - 1)) 54d50897d544c8 Masahiro Yamada 2019-03-07 28 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki