CC: [email protected] CC: [email protected] CC: Linux Memory Management List <[email protected]> TO: Ivan Mikhaylov <[email protected]> CC: Jonathan Cameron <[email protected]>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 4ccc9e2db7ac33f450a1ff6ce158a71e5a81ded9 commit: f5e9e38e7063dbe2c811bb5ee7d255318eb064b3 [2746/4407] iio: proximity: vcnl3020: add DMA safe buffer :::::: branch date: 7 hours ago :::::: commit date: 5 days ago config: x86_64-randconfig-c001-20210728 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project c49df15c278857adecd12db6bb1cdc96885f7079) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=f5e9e38e7063dbe2c811bb5ee7d255318eb064b3 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout f5e9e38e7063dbe2c811bb5ee7d255318eb064b3 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 clang-analyzer If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> clang-analyzer warnings: (new ones prefixed by >>) 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. sound/soc/codecs/alc5623.c:700:23: warning: Value stored to 'alc5623' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct alc5623_priv *alc5623 = snd_soc_component_get_drvdata(component); ^~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ sound/soc/codecs/alc5623.c:700:23: note: Value stored to 'alc5623' during its initialization is never read struct alc5623_priv *alc5623 = snd_soc_component_get_drvdata(component); ^~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 8 warnings (8 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 8 warnings generated. sound/soc/codecs/cs35l34.c:260:3: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores] ret = regmap_update_bits(priv->regmap, CS35L34_PWRCTL1, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ sound/soc/codecs/cs35l34.c:260:3: note: Value stored to 'ret' is never read ret = regmap_update_bits(priv->regmap, CS35L34_PWRCTL1, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 8 warnings generated. Suppressed 8 warnings (8 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 8 warnings generated. Suppressed 8 warnings (8 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 8 warnings generated. Suppressed 8 warnings (8 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 8 warnings generated. Suppressed 8 warnings (8 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 8 warnings generated. Suppressed 8 warnings (8 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 8 warnings generated. Suppressed 8 warnings (8 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 8 warnings generated. Suppressed 8 warnings (8 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 10 warnings generated. Suppressed 10 warnings (10 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 5 warnings generated. Suppressed 5 warnings (5 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 8 warnings generated. >> drivers/iio/proximity/vcnl3020.c:62:8: warning: Excessive padding in 'struct >> vcnl3020_data' (93 padding bytes, where 29 is optimal). Optimal fields order: buf, rev, regmap, dev, lock, consider reordering the fields or adding explicit padding members [clang-analyzer-optin.performance.Padding] struct vcnl3020_data { ~~~~~~~^~~~~~~~~~~~~~~ drivers/iio/proximity/vcnl3020.c:62:8: note: Excessive padding in 'struct vcnl3020_data' (93 padding bytes, where 29 is optimal). Optimal fields order: buf, rev, regmap, dev, lock, consider reordering the fields or adding explicit padding members struct vcnl3020_data { ~~~~~~~^~~~~~~~~~~~~~~ Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 5 warnings generated. Suppressed 5 warnings (5 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 15 warnings generated. Suppressed 15 warnings (15 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 14 warnings generated. Suppressed 14 warnings (14 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 18 warnings generated. include/linux/list.h:100:18: warning: Access to field 'prev' results in a dereference of a null pointer (loaded from variable 'head') [clang-analyzer-core.NullDereference] __list_add(new, head->prev, head); ^ net/sctp/outqueue.c:755:6: note: Assuming field 'cork' is 0 if (q->cork) ^~~~~~~ net/sctp/outqueue.c:755:2: note: Taking false branch if (q->cork) ^ net/sctp/outqueue.c:758:2: note: Calling 'sctp_outq_flush' sctp_outq_flush(q, 0, gfp); ^~~~~~~~~~~~~~~~~~~~~~~~~~ net/sctp/outqueue.c:1184:2: note: 'ctx.transport' initialized to a null pointer value struct sctp_flush_ctx ctx = { ^~~~~~~~~~~~~~~~~~~~~~~~~ net/sctp/outqueue.c:1202:2: note: Calling 'sctp_outq_flush_ctrl' sctp_outq_flush_ctrl(&ctx); ^~~~~~~~~~~~~~~~~~~~~~~~~~ net/sctp/outqueue.c:879:2: note: Left side of '&&' is false list_for_each_entry_safe(chunk, tmp, &ctx->q->control_chunk_list, list) { ^ include/linux/list.h:715:13: note: expanded from macro 'list_for_each_entry_safe' for (pos = list_first_entry(head, typeof(*pos), member), \ ^ include/linux/list.h:522:2: note: expanded from macro 'list_first_entry' list_entry((ptr)->next, type, member) ^ include/linux/list.h:511:2: note: expanded from macro 'list_entry' container_of(ptr, type, member) ^ include/linux/kernel.h:495:61: note: expanded from macro 'container_of' BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ ^ net/sctp/outqueue.c:879:2: note: Taking false branch list_for_each_entry_safe(chunk, tmp, &ctx->q->control_chunk_list, list) { ^ include/linux/list.h:715:13: note: expanded from macro 'list_for_each_entry_safe' for (pos = list_first_entry(head, typeof(*pos), member), \ ^ include/linux/list.h:522:2: note: expanded from macro 'list_first_entry' list_entry((ptr)->next, type, member) ^ include/linux/list.h:511:2: note: expanded from macro 'list_entry' container_of(ptr, type, member) ^ note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) include/linux/compiler_types.h:328:2: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^ include/linux/compiler_types.h:316:2: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ^ include/linux/compiler_types.h:308:3: note: expanded from macro '__compiletime_assert' if (!(condition)) \ ^ net/sctp/outqueue.c:879:2: note: Loop condition is false. Exiting loop list_for_each_entry_safe(chunk, tmp, &ctx->q->control_chunk_list, list) { ^ include/linux/list.h:715:13: note: expanded from macro 'list_for_each_entry_safe' for (pos = list_first_entry(head, typeof(*pos), member), \ ^ include/linux/list.h:522:2: note: expanded from macro 'list_first_entry' list_entry((ptr)->next, type, member) ^ include/linux/list.h:511:2: note: expanded from macro 'list_entry' container_of(ptr, type, member) ^ note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) include/linux/compiler_types.h:328:2: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) vim +62 drivers/iio/proximity/vcnl3020.c 6a878e70e88b53 Ivan Mikhaylov 2021-02-25 53 ac101e6b315bfe Ivan Mikhaylov 2020-05-10 54 /** ac101e6b315bfe Ivan Mikhaylov 2020-05-10 55 * struct vcnl3020_data - vcnl3020 specific data. ac101e6b315bfe Ivan Mikhaylov 2020-05-10 56 * @regmap: device register map. ac101e6b315bfe Ivan Mikhaylov 2020-05-10 57 * @dev: vcnl3020 device. ac101e6b315bfe Ivan Mikhaylov 2020-05-10 58 * @rev: revision id. ac101e6b315bfe Ivan Mikhaylov 2020-05-10 59 * @lock: lock for protecting access to device hardware registers. f5e9e38e7063db Ivan Mikhaylov 2021-07-22 60 * @buf: DMA safe __be16 buffer. ac101e6b315bfe Ivan Mikhaylov 2020-05-10 61 */ ac101e6b315bfe Ivan Mikhaylov 2020-05-10 @62 struct vcnl3020_data { ac101e6b315bfe Ivan Mikhaylov 2020-05-10 63 struct regmap *regmap; ac101e6b315bfe Ivan Mikhaylov 2020-05-10 64 struct device *dev; ac101e6b315bfe Ivan Mikhaylov 2020-05-10 65 u8 rev; ac101e6b315bfe Ivan Mikhaylov 2020-05-10 66 struct mutex lock; f5e9e38e7063db Ivan Mikhaylov 2021-07-22 67 __be16 buf ____cacheline_aligned; ac101e6b315bfe Ivan Mikhaylov 2020-05-10 68 }; ac101e6b315bfe Ivan Mikhaylov 2020-05-10 69 :::::: The code at line 62 was first introduced by commit :::::: ac101e6b315bfeb5a4f43a962f589e567855c177 iio: proximity: Add driver support for vcnl3020 proximity sensor :::::: TO: Ivan Mikhaylov <[email protected]> :::::: CC: Jonathan Cameron <[email protected]> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
Description: application/gzip
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