From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) (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 438B6D27E; Tue, 4 Nov 2025 20:51:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.19 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762289490; cv=none; b=QuvsNyfTdSmN+601JsFCmdt+Z4uCOXCkOkkcfJXVzX+01yslt9ouMQAiNWY5R6WJQFftWWSqo0jj33tlhVqgoCwDsp3iShKrmOp4dJVpKVZa+/jjyEuge4tnnmeq2GEjkbqV3Hb40EcGrS+eE9oMbYiqhUPwlevSUM3iN7u4WLU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762289490; c=relaxed/simple; bh=8bLTs6wDKk3qr42kNSErNhGJeMR7rvigmxb0+LIL/JY=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=Gacclrkvd3fjoWfzo02M9DfB+4LAQ5UN7nswNrf7ZYIqIeAmFn50cpGQ76JXFfdr1b21Gaq6IxXlcEVJw2J662lp+WdefpIiniIffKUBdVPRdVjQQmGKuDRGZzGRQRVPz4lRmo83YwOjtStSPDHLFCNBDViu/mdtZkwvpxlsAR0= 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=CVLoEa+t; arc=none smtp.client-ip=198.175.65.19 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="CVLoEa+t" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1762289487; x=1793825487; h=date:from:to:cc:subject:message-id:mime-version; bh=8bLTs6wDKk3qr42kNSErNhGJeMR7rvigmxb0+LIL/JY=; b=CVLoEa+tzwZ950GEdTRyWd63NxAOPBAKHSqxnDDyHwJdttVCh63U2v8/ u5Q/sOM7cpFTQ5lbrP4G9CXJ6mzrNDtgPzgJTqd+KtqsTkXXZssV2BENu xFhEoOGnrKloo2U3ftzNqJfC43XIlaY4Yztj5nHMzSjQQn1CbgBIJEYrj TeSpSruKP8sgxTrQRaEybhCNzOAGEvdKi+IcPUVJENOlzZKnIOmVfMEIe WUftvxE36E1ompbmJ2VnknvRlbZO3DdxlEgwLPkQPeB4G4cH6UPqcVgYS 40T3CILqAQSqk+xzxbhz9mVZUPhyBhfrwvGhmMUaFWX75jTFD/xZ3JU83 A==; X-CSE-ConnectionGUID: i44n1gadRFG7Z4oTnghPWQ== X-CSE-MsgGUID: Njza+U7NTgGmDZdvR9rMlg== X-IronPort-AV: E=McAfee;i="6800,10657,11603"; a="64280613" X-IronPort-AV: E=Sophos;i="6.19,280,1754982000"; d="scan'208";a="64280613" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Nov 2025 12:51:27 -0800 X-CSE-ConnectionGUID: hIRvz3qIRA+4XDnChnAv5A== X-CSE-MsgGUID: JxIe0AqBR3aWGqMUEoJM1A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,280,1754982000"; d="scan'208";a="187706971" Received: from lkp-server02.sh.intel.com (HELO 66d7546c76b2) ([10.239.97.151]) by fmviesa009.fm.intel.com with ESMTP; 04 Nov 2025 12:51:26 -0800 Received: from kbuild by 66d7546c76b2 with local (Exim 4.96) (envelope-from ) id 1vGNzK-000Roe-1K; Tue, 04 Nov 2025 20:50:50 +0000 Date: Wed, 5 Nov 2025 04:50:00 +0800 From: kernel test robot To: Vlastimil Babka Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev Subject: [vbabka:slab-fms-cleanup 2/4] mm/slab.h:107:15: error: static assertion failed due to requirement 'sizeof(struct slab) <= sizeof(struct page)': sizeof(struct slab) <= sizeof(struct page) Message-ID: <202511050409.LJTnpEfF-lkp@intel.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline tree: https://git.kernel.org/pub/scm/linux/kernel/git/vbabka/linux.git slab-fms-cleanup head: e401df7388463ed094dca0ba9c7bac58b1ee4cc7 commit: 382037dcfead97fb0a66368b8237220a7f4a661b [2/4] slab: move counters union to freelist_aba_t config: loongarch-allnoconfig (https://download.01.org/0day-ci/archive/20251105/202511050409.LJTnpEfF-lkp@intel.com/config) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project d2625a438020ad35330cda29c3def102c1687b1b) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251105/202511050409.LJTnpEfF-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/202511050409.LJTnpEfF-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from mm/mempool.c:21: >> mm/slab.h:107:15: error: static assertion failed due to requirement 'sizeof(struct slab) <= sizeof(struct page)': sizeof(struct slab) <= sizeof(struct page) 107 | static_assert(sizeof(struct slab) <= sizeof(struct page)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:77:50: note: expanded from macro 'static_assert' 77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr) | ^~~~ include/linux/build_bug.h:78:56: note: expanded from macro '__static_assert' 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~ mm/slab.h:107:35: note: expression evaluates to '64 <= 56' 107 | static_assert(sizeof(struct slab) <= sizeof(struct page)); | ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:77:50: note: expanded from macro 'static_assert' 77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr) | ^~~~ include/linux/build_bug.h:78:56: note: expanded from macro '__static_assert' 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~ 1 error generated. vim +107 mm/slab.h d122019bf061cc Matthew Wilcox (Oracle 2021-10-04 95) d122019bf061cc Matthew Wilcox (Oracle 2021-10-04 96) #define SLAB_MATCH(pg, sl) \ d122019bf061cc Matthew Wilcox (Oracle 2021-10-04 97) static_assert(offsetof(struct page, pg) == offsetof(struct slab, sl)) 30908096dd8d79 Matthew Wilcox (Oracle 2025-06-11 98) SLAB_MATCH(flags, flags); 130d4df57390a2 Vlastimil Babka 2022-08-26 99 SLAB_MATCH(compound_head, slab_cache); /* Ensure bit 0 is clear */ d122019bf061cc Matthew Wilcox (Oracle 2021-10-04 100) SLAB_MATCH(_refcount, __page_refcount); a52c6330ff2fe1 Alex Shi (Tencent 2024-07-12 101) #ifdef CONFIG_MEMCG 21c690a349baab Suren Baghdasaryan 2024-03-21 102 SLAB_MATCH(memcg_data, obj_exts); a52c6330ff2fe1 Alex Shi (Tencent 2024-07-12 103) #elif defined(CONFIG_SLAB_OBJ_EXT) a52c6330ff2fe1 Alex Shi (Tencent 2024-07-12 104) SLAB_MATCH(_unused_slab_obj_exts, obj_exts); d122019bf061cc Matthew Wilcox (Oracle 2021-10-04 105) #endif d122019bf061cc Matthew Wilcox (Oracle 2021-10-04 106) #undef SLAB_MATCH d122019bf061cc Matthew Wilcox (Oracle 2021-10-04 @107) static_assert(sizeof(struct slab) <= sizeof(struct page)); a9e0b9f27266d4 Vlastimil Babka 2023-10-02 108 #if defined(system_has_freelist_aba) 6801be4f2653e5 Peter Zijlstra 2023-05-31 109 static_assert(IS_ALIGNED(offsetof(struct slab, freelist), sizeof(freelist_aba_t))); 130d4df57390a2 Vlastimil Babka 2022-08-26 110 #endif d122019bf061cc Matthew Wilcox (Oracle 2021-10-04 111) :::::: The code at line 107 was first introduced by commit :::::: d122019bf061cccc4583eb9ad40bf58c2fe517be mm: Split slab into its own type :::::: TO: Matthew Wilcox (Oracle) :::::: CC: Vlastimil Babka -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki