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X-CSE-ConnectionGUID: B3nYhO4fT7GrPBv4W+Fz8w== X-CSE-MsgGUID: QJbRYxvAT0aa4vae8f3bCQ== X-IronPort-AV: E=McAfee;i="6700,10204,11412"; a="47168750" X-IronPort-AV: E=Sophos;i="6.15,233,1739865600"; d="scan'208";a="47168750" Received: from fmviesa005.fm.intel.com ([10.60.135.145]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Apr 2025 10:47:35 -0700 X-CSE-ConnectionGUID: ASiuKRo8Syau7sjtBnrOLw== X-CSE-MsgGUID: mYd/xEnCTYCPxLKRG3eVuw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.15,233,1739865600"; d="scan'208";a="137173333" Received: from lkp-server01.sh.intel.com (HELO 050dd05385d1) ([10.239.97.150]) by fmviesa005.fm.intel.com with ESMTP; 23 Apr 2025 10:47:31 -0700 Received: from kbuild by 050dd05385d1 with local (Exim 4.96) (envelope-from ) id 1u7eC1-0003Vv-1W; Wed, 23 Apr 2025 17:47:29 +0000 Date: Thu, 24 Apr 2025 01:46:30 +0800 From: kernel test robot To: David Lechner , Jonathan Cameron , Nuno =?iso-8859-1?Q?S=E1?= , Andy Shevchenko , Lars-Peter Clausen , Michael Hennerich , Eugen Hristev , Nicolas Ferre , Alexandre Belloni , Claudiu Beznea Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v2 1/6] iio: introduce IIO_DECLARE_BUFFER_WITH_TS macros Message-ID: <202504240137.4mJaj0GN-lkp@intel.com> References: <20250422-iio-introduce-iio_declare_buffer_with_ts-v2-1-3fd36475c706@baylibre.com> Precedence: bulk X-Mailing-List: linux-iio@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: <20250422-iio-introduce-iio_declare_buffer_with_ts-v2-1-3fd36475c706@baylibre.com> Hi David, kernel test robot noticed the following build errors: [auto build test ERROR on aff301f37e220970c2f301b5c65a8bfedf52058e] url: https://github.com/intel-lab-lkp/linux/commits/David-Lechner/iio-introduce-IIO_DECLARE_BUFFER_WITH_TS-macros/20250423-061049 base: aff301f37e220970c2f301b5c65a8bfedf52058e patch link: https://lore.kernel.org/r/20250422-iio-introduce-iio_declare_buffer_with_ts-v2-1-3fd36475c706%40baylibre.com patch subject: [PATCH v2 1/6] iio: introduce IIO_DECLARE_BUFFER_WITH_TS macros config: riscv-randconfig-002-20250424 (https://download.01.org/0day-ci/archive/20250424/202504240137.4mJaj0GN-lkp@intel.com/config) compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project f819f46284f2a79790038e1f6649172789734ae8) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250424/202504240137.4mJaj0GN-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/202504240137.4mJaj0GN-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from drivers/iio/industrialio-buffer.c:18: In file included from include/linux/dma-buf.h:16: In file included from include/linux/iosys-map.h:10: In file included from include/linux/io.h:12: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 804 | insb(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb' 104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from drivers/iio/industrialio-buffer.c:18: In file included from include/linux/dma-buf.h:16: In file included from include/linux/iosys-map.h:10: In file included from include/linux/io.h:12: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 812 | insw(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw' 105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from drivers/iio/industrialio-buffer.c:18: In file included from include/linux/dma-buf.h:16: In file included from include/linux/iosys-map.h:10: In file included from include/linux/io.h:12: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 820 | insl(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl' 106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from drivers/iio/industrialio-buffer.c:18: In file included from include/linux/dma-buf.h:16: In file included from include/linux/iosys-map.h:10: In file included from include/linux/io.h:12: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 829 | outsb(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb' 118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from drivers/iio/industrialio-buffer.c:18: In file included from include/linux/dma-buf.h:16: In file included from include/linux/iosys-map.h:10: In file included from include/linux/io.h:12: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 838 | outsw(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw' 119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from drivers/iio/industrialio-buffer.c:18: In file included from include/linux/dma-buf.h:16: In file included from include/linux/iosys-map.h:10: In file included from include/linux/io.h:12: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 847 | outsl(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl' 120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from drivers/iio/industrialio-buffer.c:18: In file included from include/linux/dma-buf.h:16: In file included from include/linux/iosys-map.h:10: In file included from include/linux/io.h:12: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 1175 | return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port; | ~~~~~~~~~~ ^ In file included from drivers/iio/industrialio-buffer.c:29: >> include/linux/iio/iio.h:813:16: error: static assertion failed due to requirement 'sizeof (__alignof(unsigned long long)) % sizeof(long long) == 0': macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment 813 | _Static_assert(sizeof(IIO_DMA_MINALIGN) % sizeof(s64) == 0, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/iio/iio.h:813:55: note: expression evaluates to '4 == 0' 813 | _Static_assert(sizeof(IIO_DMA_MINALIGN) % sizeof(s64) == 0, | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~ 7 warnings and 1 error generated. -- In file included from drivers/iio/industrialio-sw-device.c:14: In file included from include/linux/iio/sw_device.h:13: >> include/linux/iio/iio.h:813:16: error: static assertion failed due to requirement 'sizeof (__alignof(unsigned long long)) % sizeof(long long) == 0': macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment 813 | _Static_assert(sizeof(IIO_DMA_MINALIGN) % sizeof(s64) == 0, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/iio/iio.h:813:55: note: expression evaluates to '4 == 0' 813 | _Static_assert(sizeof(IIO_DMA_MINALIGN) % sizeof(s64) == 0, | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~ 1 error generated. -- In file included from drivers/iio/industrialio-triggered-event.c:9: >> include/linux/iio/iio.h:813:16: error: static assertion failed due to requirement 'sizeof (__alignof(unsigned long long)) % sizeof(long long) == 0': macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment 813 | _Static_assert(sizeof(IIO_DMA_MINALIGN) % sizeof(s64) == 0, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/iio/iio.h:813:55: note: expression evaluates to '4 == 0' 813 | _Static_assert(sizeof(IIO_DMA_MINALIGN) % sizeof(s64) == 0, | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~ In file included from drivers/iio/industrialio-triggered-event.c:10: In file included from include/linux/iio/triggered_event.h:5: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:12: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 804 | insb(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb' 104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from drivers/iio/industrialio-triggered-event.c:10: In file included from include/linux/iio/triggered_event.h:5: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:12: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 812 | insw(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw' 105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from drivers/iio/industrialio-triggered-event.c:10: In file included from include/linux/iio/triggered_event.h:5: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:12: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 820 | insl(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl' 106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from drivers/iio/industrialio-triggered-event.c:10: In file included from include/linux/iio/triggered_event.h:5: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:12: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 829 | outsb(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb' 118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from drivers/iio/industrialio-triggered-event.c:10: In file included from include/linux/iio/triggered_event.h:5: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:12: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 838 | outsw(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw' 119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from drivers/iio/industrialio-triggered-event.c:10: In file included from include/linux/iio/triggered_event.h:5: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:12: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 847 | outsl(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl' 120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from drivers/iio/industrialio-triggered-event.c:10: In file included from include/linux/iio/triggered_event.h:5: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: vim +813 include/linux/iio/iio.h 781 782 #define _IIO_DECLARE_BUFFER_WITH_TS(type, name, count) \ 783 type name[ALIGN((count), sizeof(s64) / sizeof(type)) + sizeof(s64) / sizeof(type)] 784 785 /** 786 * IIO_DECLARE_BUFFER_WITH_TS() - Declare a buffer with timestamp 787 * @type: element type of the buffer 788 * @name: identifier name of the buffer 789 * @count: number of elements in the buffer 790 * 791 * Declares a buffer that is safe to use with iio_push_to_buffer_with_ts(). In 792 * addition to allocating enough space for @count elements of @type, it also 793 * allocates space for a s64 timestamp at the end of the buffer and ensures 794 * proper alignment of the timestamp. 795 */ 796 #define IIO_DECLARE_BUFFER_WITH_TS(type, name, count) \ 797 _IIO_DECLARE_BUFFER_WITH_TS(type, name, count) __aligned(sizeof(s64)) 798 799 /** 800 * IIO_DECLARE_DMA_BUFFER_WITH_TS() - Declare a DMA-aligned buffer with timestamp 801 * @type: element type of the buffer 802 * @name: identifier name of the buffer 803 * @count: number of elements in the buffer 804 * 805 * Same as IIO_DECLARE_BUFFER_WITH_TS(), but is uses __aligned(IIO_DMA_MINALIGN) 806 * to ensure that the buffer doesn't share cachelines with anything that comes 807 * before it in a struct. This should not be used for stack-allocated buffers 808 * as stack memory cannot generally be used for DMA. 809 */ 810 #define IIO_DECLARE_DMA_BUFFER_WITH_TS(type, name, count) \ 811 _IIO_DECLARE_BUFFER_WITH_TS(type, name, count) __aligned(IIO_DMA_MINALIGN) 812 > 813 _Static_assert(sizeof(IIO_DMA_MINALIGN) % sizeof(s64) == 0, 814 "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment"); 815 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki