From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.13]) (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 840FB2E6CB3 for ; Sat, 7 Feb 2026 08:25:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.13 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770452739; cv=none; b=SU1UCiOs7qE0AM7TsV9a1cwMqRhWYwYvwkdDpyHWa14necbqSdbkc9o5c1T3tPF0wflQYiHaAL+YKdDLYZ/RBt48LBcF3+2tlhkR+KDJahzAsRMV/uM3EyOFZXmE0AgYbNTTrMYZnBuzjzrqYhum6i5yn5EZ9aCzpvA/CK8lgjc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770452739; c=relaxed/simple; bh=T7Zydu4Izus+Poy/RhCGEKnXZoSz4CZQz+ESeXsx12I=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=hN5ewV+KCCwFTLesRckgiul30TLa7HE9rfXy5HXfQ2Hiy+boYo0XT82xf0eTKziIfO+m94V1jfZsY64Nf10eebpuisB7bQMej3hJsA5yOxtRzLdUsq4gmIm9GdSHNPUPdieUbctxWiZdhbAkpgTj1XC37BQUnHhfmohPq48ILBY= 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=awBgpaEV; arc=none smtp.client-ip=198.175.65.13 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="awBgpaEV" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1770452738; x=1801988738; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=T7Zydu4Izus+Poy/RhCGEKnXZoSz4CZQz+ESeXsx12I=; b=awBgpaEVWoTiWdYPSDwQkEeGbcQJUzw8CtEyc1eAWDy2V3P6WzR5AQ/H Yeu0El4CC232UptQRNKRHKdkILkoKJL0qbAFqzBbuYoh4WDSRFc2UKc4E pvfZlUcEtGVr23StnD785nU37+qTOladocupEBuIfTMptcnL5kkS29brW u1yGGS97htq1cYaIn1Tv8u7rNkash02i8l/TfEscGwVr1/g6pwjon2Xom 17Zxg+j2vDHAjRLO8IlAVGazTcIMStZUJRao9RbeJEySmKWYvC9SpKVSw hU37FziZWug4zNDeozbxaUS+VOr4SFoRGO7+UPHzFCDuOu2pwFslhisla w==; X-CSE-ConnectionGUID: aXobiRLNQqS+M7vCe/PgRg== X-CSE-MsgGUID: rmfk3AuySYuESeoyzMNdsA== X-IronPort-AV: E=McAfee;i="6800,10657,11693"; a="82762321" X-IronPort-AV: E=Sophos;i="6.21,277,1763452800"; d="scan'208";a="82762321" Received: from fmviesa001.fm.intel.com ([10.60.135.141]) by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Feb 2026 00:25:38 -0800 X-CSE-ConnectionGUID: T/8TPPEaRNy5NRmyQkkvbQ== X-CSE-MsgGUID: 6YUKh6laTmq6Yt7mG9RojQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,277,1763452800"; d="scan'208";a="241436547" Received: from lkp-server01.sh.intel.com (HELO 765f4a05e27f) ([10.239.97.150]) by fmviesa001.fm.intel.com with ESMTP; 07 Feb 2026 00:25:37 -0800 Received: from kbuild by 765f4a05e27f with local (Exim 4.98.2) (envelope-from ) id 1voddG-00000000lVs-1OK3; Sat, 07 Feb 2026 08:25:34 +0000 Date: Sat, 7 Feb 2026 16:25:28 +0800 From: kernel test robot To: Harry Yoo Cc: oe-kbuild-all@lists.linux.dev Subject: Re: [RFC PATCH 1/7] mm/slab: introduce k[v]free_rcu() with struct rcu_ptr Message-ID: <202602071648.vowybwDl-lkp@intel.com> References: <20260206093410.160622-2-harry.yoo@oracle.com> Precedence: bulk X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260206093410.160622-2-harry.yoo@oracle.com> Hi Harry, [This is a private test report for your RFC patch.] kernel test robot noticed the following build errors: [auto build test ERROR on next-20260205] [also build test ERROR on v6.19-rc8] [cannot apply to akpm-mm/mm-everything linus/master vbabka-slab/for-next rcu/rcu/dev v6.19-rc8 v6.19-rc7 v6.19-rc6] [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/Harry-Yoo/mm-slab-introduce-k-v-free_rcu-with-struct-rcu_ptr/20260206-173717 base: next-20260205 patch link: https://lore.kernel.org/r/20260206093410.160622-2-harry.yoo%40oracle.com patch subject: [RFC PATCH 1/7] mm/slab: introduce k[v]free_rcu() with struct rcu_ptr config: mips-allnoconfig (https://download.01.org/0day-ci/archive/20260207/202602071648.vowybwDl-lkp@intel.com/config) compiler: mips-linux-gcc (GCC) 15.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260207/202602071648.vowybwDl-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/202602071648.vowybwDl-lkp@intel.com/ All error/warnings (new ones prefixed by >>): In file included from include/uapi/linux/time.h:5, from include/vdso/auxclock.h:5, from lib/vdso/gettimeofday.c:5, from : >> include/linux/types.h:257:29: warning: declaration does not declare anything 257 | struct callback_head; | ^ In file included from include/linux/container_of.h:5, from include/linux/kernel.h:22, from arch/mips/include/asm/page.h:14, from include/linux/mm_types_task.h:14, from include/linux/mm_types.h:5, from arch/mips/include/asm/vdso.h:10, from arch/mips/include/asm/vdso/vdso.h:15, from arch/mips/include/asm/vdso/gettimeofday.h:16, from include/vdso/datapage.h:196, from lib/vdso/gettimeofday.c:6: >> include/linux/build_bug.h:78:41: error: static assertion failed: "sizeof(struct rcu_head) == sizeof(struct rcu_ptr)" 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~~~~~~~~~~~ include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert' 77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr) | ^~~~~~~~~~~~~~~ include/linux/rcupdate.h:1127:1: note: in expansion of macro 'static_assert' 1127 | static_assert(sizeof(struct rcu_head) == sizeof(struct rcu_ptr)); | ^~~~~~~~~~~~~ vim +78 include/linux/build_bug.h bc6245e5efd70c Ian Abbott 2017-07-10 60 6bab69c65013be Rasmus Villemoes 2019-03-07 61 /** 6bab69c65013be Rasmus Villemoes 2019-03-07 62 * static_assert - check integer constant expression at build time 6bab69c65013be Rasmus Villemoes 2019-03-07 63 * 6bab69c65013be Rasmus Villemoes 2019-03-07 64 * static_assert() is a wrapper for the C11 _Static_assert, with a 6bab69c65013be Rasmus Villemoes 2019-03-07 65 * little macro magic to make the message optional (defaulting to the 6bab69c65013be Rasmus Villemoes 2019-03-07 66 * stringification of the tested expression). 6bab69c65013be Rasmus Villemoes 2019-03-07 67 * 6bab69c65013be Rasmus Villemoes 2019-03-07 68 * Contrary to BUILD_BUG_ON(), static_assert() can be used at global 6bab69c65013be Rasmus Villemoes 2019-03-07 69 * scope, but requires the expression to be an integer constant 6bab69c65013be Rasmus Villemoes 2019-03-07 70 * expression (i.e., it is not enough that __builtin_constant_p() is 6bab69c65013be Rasmus Villemoes 2019-03-07 71 * true for expr). 6bab69c65013be Rasmus Villemoes 2019-03-07 72 * 6bab69c65013be Rasmus Villemoes 2019-03-07 73 * Also note that BUILD_BUG_ON() fails the build if the condition is 6bab69c65013be Rasmus Villemoes 2019-03-07 74 * true, while static_assert() fails the build if the expression is 6bab69c65013be Rasmus Villemoes 2019-03-07 75 * false. 6bab69c65013be Rasmus Villemoes 2019-03-07 76 */ 6bab69c65013be Rasmus Villemoes 2019-03-07 77 #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr) 6bab69c65013be Rasmus Villemoes 2019-03-07 @78 #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) 6bab69c65013be Rasmus Villemoes 2019-03-07 79 07a368b3f55a79 Maxim Levitsky 2022-10-25 80 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki