CC: [email protected] CC: [email protected] In-Reply-To: <[email protected]> References: <[email protected]> TO: NeilBrown <[email protected]> TO: Andrew Morton <[email protected]> CC: Linux Memory Management List <[email protected]> TO: Mel Gorman <[email protected]> TO: Philipp Reisner <[email protected]> TO: Lars Ellenberg <[email protected]> TO: Jan Kara <[email protected]> TO: Ryusuke Konishi <[email protected]> TO: "Darrick J. Wong" <[email protected]> CC: [email protected] CC: [email protected]
Hi NeilBrown, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on hnaz-mm/master] [also build test WARNING on axboe-block/for-next konis-nilfs2/upstream xfs-linux/for-next linus/master v5.16-rc5] [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] url: https://github.com/0day-ci/linux/commits/NeilBrown/Remove-some-congested-tests/20211213-121653 base: https://github.com/hnaz/linux-mm master :::::: branch date: 10 hours ago :::::: commit date: 10 hours ago config: x86_64-randconfig-c007-20211213 (https://download.01.org/0day-ci/archive/20211213/[email protected]/config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project b6a2ddb6c8ac29412b1361810972e15221fa021c) 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 # https://github.com/0day-ci/linux/commit/41802b6debbde3d5553a8067ba2deb2035e6da6e git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review NeilBrown/Remove-some-congested-tests/20211213-121653 git checkout 41802b6debbde3d5553a8067ba2deb2035e6da6e # save the config file 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 >>) ^ include/linux/compiler.h:78:42: note: expanded from macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ fs/lockd/mon.c:280:2: note: Taking false branch if (unlikely(new == NULL)) ^ fs/lockd/mon.c:289:6: note: Assuming the condition is false if (rpc_ntop(nsm_addr(new), new->sm_addrbuf, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/lockd/mon.c:289:2: note: Taking false branch if (rpc_ntop(nsm_addr(new), new->sm_addrbuf, ^ fs/lockd/mon.c:293:2: note: Null pointer passed as 2nd argument to memory copy function memcpy(new->sm_name, hostname, hostname_len); ^ ~~~~~~~~ Suppressed 11 warnings (11 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. 4 warnings generated. Suppressed 4 warnings (4 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. 4 warnings generated. Suppressed 4 warnings (4 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 (4 in non-user code, 1 with check filters). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 4 warnings generated. Suppressed 4 warnings (4 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. 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. drivers/gpio/gpio-pcf857x.c:237:23: warning: Value stored to 'np' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct device_node *np = client->dev.of_node; ^~ ~~~~~~~~~~~~~~~~~~~ drivers/gpio/gpio-pcf857x.c:237:23: note: Value stored to 'np' during its initialization is never read struct device_node *np = client->dev.of_node; ^~ ~~~~~~~~~~~~~~~~~~~ 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. 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. 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. 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. 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. 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. 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/mfd/sm501.c:513:16: warning: Value stored to 'mode' during its initialization is never read [clang-analyzer-deadcode.DeadStores] unsigned long mode = smc501_readl(sm->regs + SM501_POWER_MODE_CONTROL); ^~~~ drivers/mfd/sm501.c:513:16: note: Value stored to 'mode' during its initialization is never read unsigned long mode = smc501_readl(sm->regs + SM501_POWER_MODE_CONTROL); ^~~~ drivers/mfd/sm501.c:514:16: warning: Value stored to 'gate' during its initialization is never read [clang-analyzer-deadcode.DeadStores] unsigned long gate = smc501_readl(sm->regs + SM501_CURRENT_GATE); ^~~~ drivers/mfd/sm501.c:514:16: note: Value stored to 'gate' during its initialization is never read unsigned long gate = smc501_readl(sm->regs + SM501_CURRENT_GATE); ^~~~ drivers/mfd/sm501.c:515:16: warning: Value stored to 'clock' during its initialization is never read [clang-analyzer-deadcode.DeadStores] unsigned long clock = smc501_readl(sm->regs + SM501_CURRENT_CLOCK); ^~~~~ drivers/mfd/sm501.c:515:16: note: Value stored to 'clock' during its initialization is never read unsigned long clock = smc501_readl(sm->regs + SM501_CURRENT_CLOCK); ^~~~~ 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. 4 warnings generated. Suppressed 4 warnings (4 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. fs/ext2/dir.c:477:2: warning: Value stored to 'err' is never read [clang-analyzer-deadcode.DeadStores] err = ext2_commit_chunk(page, pos, len); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/ext2/dir.c:477:2: note: Value stored to 'err' is never read err = ext2_commit_chunk(page, pos, len); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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. 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. 7 warnings generated. >> fs/ext2/ialloc.c:175:2: warning: Value stored to 'bdi' is never read >> [clang-analyzer-deadcode.DeadStores] bdi = inode_to_bdi(inode); ^ ~~~~~~~~~~~~~~~~~~~ fs/ext2/ialloc.c:175:2: note: Value stored to 'bdi' is never read bdi = inode_to_bdi(inode); ^ ~~~~~~~~~~~~~~~~~~~ fs/ext2/ialloc.c:301:4: warning: Value stored to 'desc' is never read [clang-analyzer-deadcode.DeadStores] desc = best_desc; ^ ~~~~~~~~~ fs/ext2/ialloc.c:301:4: note: Value stored to 'desc' is never read desc = best_desc; ^ ~~~~~~~~~ Suppressed 5 warnings (4 in non-user code, 1 with check filters). 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. 4 warnings generated. Suppressed 4 warnings (4 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. 4 warnings generated. Suppressed 4 warnings (4 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. 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. 4 warnings generated. Suppressed 4 warnings (4 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. 3 warnings generated. Suppressed 3 warnings (3 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. 5 warnings generated. Suppressed 5 warnings (4 in non-user code, 1 with check filters). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 4 warnings generated. Suppressed 4 warnings (4 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. 4 warnings generated. Suppressed 4 warnings (4 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. 3 warnings generated. Suppressed 3 warnings (3 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. 3 warnings generated. Suppressed 3 warnings (3 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. 3 warnings generated. Suppressed 3 warnings (3 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. 3 warnings generated. Suppressed 3 warnings (3 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. 3 warnings generated. Suppressed 3 warnings (3 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. 3 warnings generated. Suppressed 3 warnings (3 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. 3 warnings generated. Suppressed 3 warnings (3 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. 3 warnings generated. Suppressed 3 warnings (3 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. 4 warnings generated. Suppressed 4 warnings (4 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. 13 warnings generated. drivers/regulator/core.c:1109:2: warning: Value stored to 'count' is never read [clang-analyzer-deadcode.DeadStores] count += scnprintf(buf + count, len - count, ", %s", ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/regulator/core.c:1109:2: note: Value stored to 'count' is never read count += scnprintf(buf + count, len - count, ", %s", ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/regulator/core.c:3792:3: warning: Value stored to 'possible_uV' is never read [clang-analyzer-deadcode.DeadStores] possible_uV = desired_min_uV; ^ ~~~~~~~~~~~~~~ drivers/regulator/core.c:3792:3: note: Value stored to 'possible_uV' is never read possible_uV = desired_min_uV; ^ ~~~~~~~~~~~~~~ Suppressed 11 warnings (11 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. 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. 7 warnings generated. fs/xfs/libxfs/xfs_rmap.c:244:2: warning: 4th function call argument is an uninitialized value [clang-analyzer-core.CallAndMessage] xfs_warn(mp, vim +/bdi +175 fs/ext2/ialloc.c ^1da177e4c3f41 Linus Torvalds 2005-04-16 154 ^1da177e4c3f41 Linus Torvalds 2005-04-16 155 /* ^1da177e4c3f41 Linus Torvalds 2005-04-16 156 * We perform asynchronous prereading of the new inode's inode block when ^1da177e4c3f41 Linus Torvalds 2005-04-16 157 * we create the inode, in the expectation that the inode will be written ^1da177e4c3f41 Linus Torvalds 2005-04-16 158 * back soon. There are two reasons: ^1da177e4c3f41 Linus Torvalds 2005-04-16 159 * ^1da177e4c3f41 Linus Torvalds 2005-04-16 160 * - When creating a large number of files, the async prereads will be ^1da177e4c3f41 Linus Torvalds 2005-04-16 161 * nicely merged into large reads ^1da177e4c3f41 Linus Torvalds 2005-04-16 162 * - When writing out a large number of inodes, we don't need to keep on ^1da177e4c3f41 Linus Torvalds 2005-04-16 163 * stalling the writes while we read the inode block. ^1da177e4c3f41 Linus Torvalds 2005-04-16 164 * ^1da177e4c3f41 Linus Torvalds 2005-04-16 165 * FIXME: ext2_get_group_desc() needs to be simplified. ^1da177e4c3f41 Linus Torvalds 2005-04-16 166 */ ^1da177e4c3f41 Linus Torvalds 2005-04-16 167 static void ext2_preread_inode(struct inode *inode) ^1da177e4c3f41 Linus Torvalds 2005-04-16 168 { ^1da177e4c3f41 Linus Torvalds 2005-04-16 169 unsigned long block_group; ^1da177e4c3f41 Linus Torvalds 2005-04-16 170 unsigned long offset; ^1da177e4c3f41 Linus Torvalds 2005-04-16 171 unsigned long block; ^1da177e4c3f41 Linus Torvalds 2005-04-16 172 struct ext2_group_desc * gdp; ^1da177e4c3f41 Linus Torvalds 2005-04-16 173 struct backing_dev_info *bdi; ^1da177e4c3f41 Linus Torvalds 2005-04-16 174 de1414a654e66b Christoph Hellwig 2015-01-14 @175 bdi = inode_to_bdi(inode); ^1da177e4c3f41 Linus Torvalds 2005-04-16 176 ^1da177e4c3f41 Linus Torvalds 2005-04-16 177 block_group = (inode->i_ino - 1) / EXT2_INODES_PER_GROUP(inode->i_sb); ef2fb67989d30f Eric Sandeen 2007-10-16 178 gdp = ext2_get_group_desc(inode->i_sb, block_group, NULL); ^1da177e4c3f41 Linus Torvalds 2005-04-16 179 if (gdp == NULL) ^1da177e4c3f41 Linus Torvalds 2005-04-16 180 return; ^1da177e4c3f41 Linus Torvalds 2005-04-16 181 ^1da177e4c3f41 Linus Torvalds 2005-04-16 182 /* ^1da177e4c3f41 Linus Torvalds 2005-04-16 183 * Figure out the offset within the block group inode table ^1da177e4c3f41 Linus Torvalds 2005-04-16 184 */ ^1da177e4c3f41 Linus Torvalds 2005-04-16 185 offset = ((inode->i_ino - 1) % EXT2_INODES_PER_GROUP(inode->i_sb)) * ^1da177e4c3f41 Linus Torvalds 2005-04-16 186 EXT2_INODE_SIZE(inode->i_sb); ^1da177e4c3f41 Linus Torvalds 2005-04-16 187 block = le32_to_cpu(gdp->bg_inode_table) + ^1da177e4c3f41 Linus Torvalds 2005-04-16 188 (offset >> EXT2_BLOCK_SIZE_BITS(inode->i_sb)); ^1da177e4c3f41 Linus Torvalds 2005-04-16 189 sb_breadahead(inode->i_sb, block); ^1da177e4c3f41 Linus Torvalds 2005-04-16 190 } ^1da177e4c3f41 Linus Torvalds 2005-04-16 191 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected] _______________________________________________ kbuild mailing list -- [email protected] To unsubscribe send an email to [email protected]
