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X-CSE-ConnectionGUID: dRdgfQ54Rpa/fiNysz8Wsw== X-CSE-MsgGUID: NtpVuzF8Qn+SNjlEWv2PUA== X-IronPort-AV: E=McAfee;i="6700,10204,11168"; a="26089518" X-IronPort-AV: E=Sophos;i="6.10,158,1719903600"; d="scan'208";a="26089518" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by orvoesa106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Aug 2024 02:31:38 -0700 X-CSE-ConnectionGUID: 4yQ+OAQ0SxW7nyRVOf3eNQ== X-CSE-MsgGUID: 91U1EPWYQzGpBqx4XUZ7DA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,158,1719903600"; d="scan'208";a="60373877" Received: from lkp-server01.sh.intel.com (HELO 9a732dc145d3) ([10.239.97.150]) by fmviesa009.fm.intel.com with ESMTP; 19 Aug 2024 02:31:35 -0700 Received: from kbuild by 9a732dc145d3 with local (Exim 4.96) (envelope-from ) id 1sfyjd-0008qk-18; Mon, 19 Aug 2024 09:31:33 +0000 Date: Mon, 19 Aug 2024 17:30:38 +0800 From: kernel test robot To: alexs@kernel.org, linux-kernel@vger.kernel.org Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, Alex Shi , linux-mm@kvack.org, Andrew Morton Subject: Re: [PATCH] mm: skip less than check for MAX_NR_ZONES Message-ID: <202408191710.aFXLnEbR-lkp@intel.com> References: <20240819031911.367900-1-alexs@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@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: <20240819031911.367900-1-alexs@kernel.org> Hi, kernel test robot noticed the following build errors: [auto build test ERROR on akpm-mm/mm-everything] url: https://github.com/intel-lab-lkp/linux/commits/alexs-kernel-org/mm-skip-less-than-check-for-MAX_NR_ZONES/20240819-111528 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20240819031911.367900-1-alexs%40kernel.org patch subject: [PATCH] mm: skip less than check for MAX_NR_ZONES config: s390-allnoconfig (https://download.01.org/0day-ci/archive/20240819/202408191710.aFXLnEbR-lkp@intel.com/config) compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 26670e7fa4f032a019d23d56c6a02926e854e8af) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240819/202408191710.aFXLnEbR-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/202408191710.aFXLnEbR-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from arch/s390/kernel/asm-offsets.c:11: In file included from include/linux/kvm_host.h:16: In file included from include/linux/mm.h:7: In file included from include/linux/gfp.h:7: In file included from include/linux/mmzone.h:20: >> include/linux/page-flags-layout.h:17:20: error: token is not a valid binary operator in a preprocessor subexpression 17 | #elif MAX_NR_ZONES = 2 | ~~~~~~~~~~~~ ^ In file included from arch/s390/kernel/asm-offsets.c:11: In file included from include/linux/kvm_host.h:16: In file included from include/linux/mm.h:2199: include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ In file included from arch/s390/kernel/asm-offsets.c:11: In file included from include/linux/kvm_host.h:19: In file included from include/linux/msi.h:24: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:14: In file included from arch/s390/include/asm/io.h:93: include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 548 | val = __raw_readb(PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu' 37 | #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x)) | ^ include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16' 102 | #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x)) | ^ In file included from arch/s390/kernel/asm-offsets.c:11: In file included from include/linux/kvm_host.h:19: In file included from include/linux/msi.h:24: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:14: In file included from arch/s390/include/asm/io.h:93: include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu' 35 | #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) | ^ include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32' 115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x)) | ^ In file included from arch/s390/kernel/asm-offsets.c:11: In file included from include/linux/kvm_host.h:19: In file included from include/linux/msi.h:24: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:14: In file included from arch/s390/include/asm/io.h:93: include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 585 | __raw_writeb(value, PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:693:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 693 | readsb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:701:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 701 | readsw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:709:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 709 | readsl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:718:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 718 | writesb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:727:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 727 | writesw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:736:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 736 | writesl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ In file included from arch/s390/kernel/asm-offsets.c:11: In file included from include/linux/kvm_host.h:19: In file included from include/linux/msi.h:24: In file included from include/linux/irq.h:591: In file included from arch/s390/include/asm/hw_irq.h:6: In file included from include/linux/pci.h:37: In file included from include/linux/device.h:32: In file included from include/linux/device/driver.h:21: In file included from include/linux/module.h:19: In file included from include/linux/elf.h:6: In file included from arch/s390/include/asm/elf.h:168: include/linux/compat.h:454:22: warning: array index 3 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds] 454 | case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3]; | ^ ~ arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here 22 | unsigned long sig[_NSIG_WORDS]; | ^ In file included from arch/s390/kernel/asm-offsets.c:11: In file included from include/linux/kvm_host.h:19: In file included from include/linux/msi.h:24: In file included from include/linux/irq.h:591: In file included from arch/s390/include/asm/hw_irq.h:6: In file included from include/linux/pci.h:37: In file included from include/linux/device.h:32: In file included from include/linux/device/driver.h:21: In file included from include/linux/module.h:19: vim +17 include/linux/page-flags-layout.h 7 8 /* 9 * When a memory allocation must conform to specific limitations (such 10 * as being suitable for DMA) the caller will pass in hints to the 11 * allocator in the gfp_mask, in the zone modifier bits. These bits 12 * are used to select a priority ordered list of memory zones which 13 * match the requested limits. See gfp_zone() in include/linux/gfp.h 14 */ 15 #if MAX_NR_ZONES < 2 16 #define ZONES_SHIFT 0 > 17 #elif MAX_NR_ZONES = 2 18 #define ZONES_SHIFT 1 19 #elif MAX_NR_ZONES <= 4 20 #define ZONES_SHIFT 2 21 #elif MAX_NR_ZONES <= 8 22 #define ZONES_SHIFT 3 23 #else 24 #error ZONES_SHIFT "Too many zones configured" 25 #endif 26 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki