:::::: :::::: Manual check reason: "only Kconfig file updated" :::::: Manual check reason: "low confidence static check first_new_problem: drivers/pinctrl/meson/pinctrl-meson8-pmx.c:60:25: warning: Value stored to 'func' during its initialization is never read [clang-analyzer-deadcode.DeadStores]" ::::::
BCC: l...@intel.com CC: l...@lists.linux.dev CC: kbuild-...@lists.01.org CC: linux-ker...@vger.kernel.org TO: Andy Shevchenko <andriy.shevche...@linux.intel.com> CC: Neil Armstrong <narmstr...@baylibre.com> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 4e23eeebb2e57f5a28b36221aa776b5a1122dde5 commit: 6671d0bc17866f71b8ca7ea3fb7e6dfc2a8069d2 pinctrl: meson: Enable COMPILE_TEST date: 4 months ago :::::: branch date: 2 hours ago :::::: commit date: 4 months ago config: arm-randconfig-c002-20220801 (https://download.01.org/0day-ci/archive/20220808/202208081040.ebnzxzs7-...@intel.com/config) compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 52cd00cabf479aa7eb6dbb063b7ba41ea57bce9e) 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 arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6671d0bc17866f71b8ca7ea3fb7e6dfc2a8069d2 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 6671d0bc17866f71b8ca7ea3fb7e6dfc2a8069d2 # save the config file COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm clang-analyzer If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <l...@intel.com> clang-analyzer warnings: (new ones prefixed by >>) ^ fs/jfs/jfs_dtree.c:787:2: note: Assuming the condition is true DT_PUTPAGE(mp); ^ fs/jfs/jfs_dtree.c:131:24: note: expanded from macro 'DT_PUTPAGE' #define DT_PUTPAGE(MP) BT_PUTPAGE(MP) ^~~~~~~~~~~~~~ fs/jfs/jfs_btree.h:87:8: note: expanded from macro 'BT_PUTPAGE' if (! BT_IS_ROOT(MP)) \ ^~~~~~~~~~~~~~ fs/jfs/jfs_btree.h:47:25: note: expanded from macro 'BT_IS_ROOT' #define BT_IS_ROOT(MP) (((MP)->xflag & COMMIT_PAGE) == 0) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/jfs/jfs_dtree.c:787:2: note: Taking false branch DT_PUTPAGE(mp); ^ fs/jfs/jfs_dtree.c:131:24: note: expanded from macro 'DT_PUTPAGE' #define DT_PUTPAGE(MP) BT_PUTPAGE(MP) ^ fs/jfs/jfs_btree.h:87:2: note: expanded from macro 'BT_PUTPAGE' if (! BT_IS_ROOT(MP)) \ ^ fs/jfs/jfs_dtree.c:4528:12: note: Returning from 'dtSearch' if ((rc = dtSearch(ip, key, orig_ino, &btstack, flag))) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/jfs/jfs_dtree.c:4528:7: note: Assuming 'rc' is 0 if ((rc = dtSearch(ip, key, orig_ino, &btstack, flag))) ^~ fs/jfs/jfs_dtree.c:4528:2: note: Taking false branch if ((rc = dtSearch(ip, key, orig_ino, &btstack, flag))) ^ fs/jfs/jfs_dtree.c:4532:2: note: Assigned value is garbage or undefined DT_GETSEARCH(ip, btstack.top, bn, mp, p, index); ^ fs/jfs/jfs_dtree.c:134:2: note: expanded from macro 'DT_GETSEARCH' BT_GETSEARCH(IP, LEAF, BN, MP, dtpage_t, P, INDEX, i_dtroot) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/jfs/jfs_btree.h:144:5: note: expanded from macro 'BT_GETSEARCH' BN = (LEAF)->bn;\ ^ ~~~~~~~~~~ fs/jfs/jfs_types.h:67:33: warning: The left operand of '&' is a garbage value [clang-analyzer-core.UndefinedBinaryOperatorResult] pxd->len_addr = (pxd->len_addr & cpu_to_le32(0xffffff)) | ^ fs/jfs/jfs_dtree.c:946:7: note: Assuming the condition is false sp = DT_PAGE(ip, smp); ^ fs/jfs/jfs_dtree.c:111:25: note: expanded from macro 'DT_PAGE' #define DT_PAGE(IP, MP) BT_PAGE(IP, MP, dtpage_t, i_dtroot) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/jfs/jfs_btree.h:51:3: note: expanded from macro 'BT_PAGE' (BT_IS_ROOT(MP) ? (TYPE *)&JFS_IP(IP)->ROOT : (TYPE *)(MP)->data) ^~~~~~~~~~~~~~ fs/jfs/jfs_btree.h:47:25: note: expanded from macro 'BT_IS_ROOT' #define BT_IS_ROOT(MP) (((MP)->xflag & COMMIT_PAGE) == 0) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/jfs/jfs_dtree.c:946:7: note: '?' condition is false sp = DT_PAGE(ip, smp); ^ fs/jfs/jfs_dtree.c:111:25: note: expanded from macro 'DT_PAGE' #define DT_PAGE(IP, MP) BT_PAGE(IP, MP, dtpage_t, i_dtroot) ^ fs/jfs/jfs_btree.h:51:3: note: expanded from macro 'BT_PAGE' (BT_IS_ROOT(MP) ? (TYPE *)&JFS_IP(IP)->ROOT : (TYPE *)(MP)->data) ^ fs/jfs/jfs_btree.h:47:24: note: expanded from macro 'BT_IS_ROOT' #define BT_IS_ROOT(MP) (((MP)->xflag & COMMIT_PAGE) == 0) ^ fs/jfs/jfs_dtree.c:949:6: note: Assuming field 'name' is non-null if (!key.name) { ^~~~~~~~~ fs/jfs/jfs_dtree.c:949:2: note: Taking false branch if (!key.name) { ^ fs/jfs/jfs_dtree.c:964:6: note: Assuming the condition is true if (sp->header.flag & BT_ROOT) { ^~~~~~~~~~~~~~~~~~~~~~~~~ fs/jfs/jfs_dtree.c:964:2: note: Taking true branch if (sp->header.flag & BT_ROOT) { ^ fs/jfs/jfs_dtree.c:972:7: note: Assuming 'n' is > field 'nslot' if (n <= split->nslot) ^~~~~~~~~~~~~~~~~ fs/jfs/jfs_dtree.c:972:3: note: Taking false branch if (n <= split->nslot) ^ fs/jfs/jfs_dtree.c:974:8: note: Assuming 'rc' is 0 if ((rc = dbAlloc(ip, 0, (s64) xlen, &xaddr))) { ^~ fs/jfs/jfs_dtree.c:974:3: note: Taking false branch if ((rc = dbAlloc(ip, 0, (s64) xlen, &xaddr))) { ^ fs/jfs/jfs_dtree.c:982:3: note: Calling 'PXDaddress' PXDaddress(pxd, xaddr); ^~~~~~~~~~~~~~~~~~~~~~ fs/jfs/jfs_types.h:67:33: note: The left operand of '&' is a garbage value pxd->len_addr = (pxd->len_addr & cpu_to_le32(0xffffff)) | ~~~~~~~~~~~~~ ^ Suppressed 49 warnings (49 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. 37 warnings generated. >> drivers/pinctrl/meson/pinctrl-meson8-pmx.c:60:25: warning: Value stored to >> 'func' during its initialization is never read >> [clang-analyzer-deadcode.DeadStores] struct meson_pmx_func *func = &pc->data->funcs[func_num]; ^~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/pinctrl/meson/pinctrl-meson8-pmx.c:60:25: note: Value stored to 'func' during its initialization is never read struct meson_pmx_func *func = &pc->data->funcs[func_num]; ^~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 36 warnings (36 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. 49 warnings generated. Suppressed 49 warnings (49 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. 49 warnings generated. Suppressed 49 warnings (49 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. 49 warnings generated. Suppressed 49 warnings (49 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. 49 warnings generated. Suppressed 49 warnings (49 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. 53 warnings generated. Suppressed 53 warnings (53 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. 54 warnings generated. fs/btrfs/space-info.c:1568:3: warning: Value stored to 'used' is never read [clang-analyzer-deadcode.DeadStores] used += orig_bytes; ^ ~~~~~~~~~~ fs/btrfs/space-info.c:1568:3: note: Value stored to 'used' is never read used += orig_bytes; ^ ~~~~~~~~~~ Suppressed 53 warnings (53 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. 51 warnings generated. fs/xfs/xfs_trans_buf.c:575:3: warning: Call to function 'memset' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memset_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] memset(bip->bli_formats[i].blf_data_map, 0, ^ include/linux/fortify-string.h:272:25: note: expanded from macro 'memset' #define memset(p, c, s) __fortify_memset_chk(p, c, s, \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/fortify-string.h:265:2: note: expanded from macro '__fortify_memset_chk' __underlying_memset(p, c, __fortify_size); \ ^~~~~~~~~~~~~~~~~~~ include/linux/fortify-string.h:47:29: note: expanded from macro '__underlying_memset' #define __underlying_memset __builtin_memset ^~~~~~~~~~~~~~~~ fs/xfs/xfs_trans_buf.c:575:3: note: Call to function 'memset' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memset_s' in case of C11 memset(bip->bli_formats[i].blf_data_map, 0, ^ include/linux/fortify-string.h:272:25: note: expanded from macro 'memset' #define memset(p, c, s) __fortify_memset_chk(p, c, s, \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/fortify-string.h:265:2: note: expanded from macro '__fortify_memset_chk' __underlying_memset(p, c, __fortify_size); \ ^~~~~~~~~~~~~~~~~~~ include/linux/fortify-string.h:47:29: note: expanded from macro '__underlying_memset' #define __underlying_memset __builtin_memset ^~~~~~~~~~~~~~~~ Suppressed 50 warnings (50 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. 49 warnings generated. Suppressed 49 warnings (49 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. 49 warnings generated. Suppressed 49 warnings (49 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. 49 warnings generated. Suppressed 49 warnings (49 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. 49 warnings generated. Suppressed 49 warnings (49 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. 55 warnings generated. drivers/media/i2c/rdacm21.c:373:11: warning: The left operand of '==' is a garbage value [clang-analyzer-core.UndefinedBinaryOperatorResult] if (val == OV10640_ID_HIGH) ^ drivers/media/i2c/rdacm21.c:550:6: note: Assuming 'dev' is non-null if (!dev) ^~~~ drivers/media/i2c/rdacm21.c:550:2: note: Taking false branch if (!dev) ^ drivers/media/i2c/rdacm21.c:557:6: note: 'ret' is >= 0 if (ret < 0) { ^~~ drivers/media/i2c/rdacm21.c:557:2: note: Taking false branch if (ret < 0) { ^ drivers/media/i2c/rdacm21.c:564:2: note: Taking false branch if (IS_ERR(dev->isp)) ^ drivers/media/i2c/rdacm21.c:567:8: note: Calling 'rdacm21_initialize' ret = rdacm21_initialize(dev); ^~~~~~~~~~~~~~~~~~~~~~~ drivers/media/i2c/rdacm21.c:481:6: note: Assuming 'ret' is 0 if (ret) ^~~ drivers/media/i2c/rdacm21.c:481:2: note: Taking false branch if (ret) vim +/func +60 drivers/pinctrl/meson/pinctrl-meson8-pmx.c ce385aa24a0dcc Jerome Brunet 2017-10-12 55 ce385aa24a0dcc Jerome Brunet 2017-10-12 56 static int meson8_pmx_set_mux(struct pinctrl_dev *pcdev, unsigned func_num, ce385aa24a0dcc Jerome Brunet 2017-10-12 57 unsigned group_num) ce385aa24a0dcc Jerome Brunet 2017-10-12 58 { ce385aa24a0dcc Jerome Brunet 2017-10-12 59 struct meson_pinctrl *pc = pinctrl_dev_get_drvdata(pcdev); ce385aa24a0dcc Jerome Brunet 2017-10-12 @60 struct meson_pmx_func *func = &pc->data->funcs[func_num]; ce385aa24a0dcc Jerome Brunet 2017-10-12 61 struct meson_pmx_group *group = &pc->data->groups[group_num]; ce385aa24a0dcc Jerome Brunet 2017-10-12 62 struct meson8_pmx_data *pmx_data = ce385aa24a0dcc Jerome Brunet 2017-10-12 63 (struct meson8_pmx_data *)group->data; ce385aa24a0dcc Jerome Brunet 2017-10-12 64 int i, ret = 0; ce385aa24a0dcc Jerome Brunet 2017-10-12 65 ce385aa24a0dcc Jerome Brunet 2017-10-12 66 dev_dbg(pc->dev, "enable function %s, group %s\n", func->name, ce385aa24a0dcc Jerome Brunet 2017-10-12 67 group->name); ce385aa24a0dcc Jerome Brunet 2017-10-12 68 ce385aa24a0dcc Jerome Brunet 2017-10-12 69 /* ce385aa24a0dcc Jerome Brunet 2017-10-12 70 * Disable groups using the same pin. ce385aa24a0dcc Jerome Brunet 2017-10-12 71 * The selected group is not disabled to avoid glitches. ce385aa24a0dcc Jerome Brunet 2017-10-12 72 */ ce385aa24a0dcc Jerome Brunet 2017-10-12 73 for (i = 0; i < group->num_pins; i++) ce385aa24a0dcc Jerome Brunet 2017-10-12 74 meson8_pmx_disable_other_groups(pc, group->pins[i], group_num); ce385aa24a0dcc Jerome Brunet 2017-10-12 75 ce385aa24a0dcc Jerome Brunet 2017-10-12 76 /* Function 0 (GPIO) doesn't need any additional setting */ ce385aa24a0dcc Jerome Brunet 2017-10-12 77 if (func_num) ce385aa24a0dcc Jerome Brunet 2017-10-12 78 ret = regmap_update_bits(pc->reg_mux, pmx_data->reg * 4, ce385aa24a0dcc Jerome Brunet 2017-10-12 79 BIT(pmx_data->bit), ce385aa24a0dcc Jerome Brunet 2017-10-12 80 BIT(pmx_data->bit)); ce385aa24a0dcc Jerome Brunet 2017-10-12 81 ce385aa24a0dcc Jerome Brunet 2017-10-12 82 return ret; ce385aa24a0dcc Jerome Brunet 2017-10-12 83 } ce385aa24a0dcc Jerome Brunet 2017-10-12 84 :::::: The code at line 60 was first introduced by commit :::::: ce385aa24a0dcccdc81dfcbc90cf7aa290d8b758 pinctrl: meson: rework pinmux ops :::::: TO: Jerome Brunet <jbru...@baylibre.com> :::::: CC: Linus Walleij <linus.wall...@linaro.org> -- 0-DAY CI Kernel Test Service https://01.org/lkp _______________________________________________ kbuild mailing list -- kbuild@lists.01.org To unsubscribe send an email to kbuild-le...@lists.01.org
