CC: llvm(a)lists.linux.dev CC: kbuild-all(a)lists.01.org CC: linux-kernel(a)vger.kernel.org TO: Jonathan Lemon tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: e851dfae4371d3c751f1e18e8eb5eba993de1467 commit: f67bf662d2cffa2ddf19ffa23381d49c9cffd783 ptp: ocp: Add debugfs entry for timecard date: 8 weeks ago :::::: branch date: 4 hours ago :::::: commit date: 8 weeks ago config: i386-randconfig-c001-20211012 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project c3dcf39554dbea780d6cb7e12239451ba47a2668) 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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f67bf662d2cffa2ddf19ffa23381d49c9cffd783 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout f67bf662d2cffa2ddf19ffa23381d49c9cffd783 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=i386 clang-analyzer If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot clang-analyzer warnings: (new ones prefixed by >>) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/mtd/nand/raw/nand_base.c:5416:7: note: 'ret' is 0 if (ret) ^~~ drivers/mtd/nand/raw/nand_base.c:5416:3: note: Taking false branch if (ret) ^ drivers/mtd/nand/raw/nand_base.c:5419:19: note: The right operand of '!=' is a garbage value if (nand_maf_id != id[0] || nand_dev_id != id[1]) { ^ ~~~~~ drivers/mtd/nand/raw/nand_base.c:5613:22: warning: Value stored to 'nanddev' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct nand_device *nanddev = mtd_to_nanddev(mtd); ^~~~~~~ ~~~~~~~~~~~~~~~~~~~ drivers/mtd/nand/raw/nand_base.c:5613:22: note: Value stored to 'nanddev' during its initialization is never read struct nand_device *nanddev = mtd_to_nanddev(mtd); ^~~~~~~ ~~~~~~~~~~~~~~~~~~~ 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. 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. 11 warnings generated. Suppressed 11 warnings (9 in non-user code, 2 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. 20 warnings generated. drivers/power/supply/twl4030_charger.c:364:2: warning: Value stored to 'cur_reg' is never read [clang-analyzer-deadcode.DeadStores] cur_reg |= oldreg << 8; ^ ~~~~~~~~~~~ drivers/power/supply/twl4030_charger.c:364:2: note: Value stored to 'cur_reg' is never read cur_reg |= oldreg << 8; ^ ~~~~~~~~~~~ drivers/power/supply/twl4030_charger.c:383:3: warning: Value stored to 'status' is never read [clang-analyzer-deadcode.DeadStores] status = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/power/supply/twl4030_charger.c:383:3: note: Value stored to 'status' is never read status = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/power/supply/twl4030_charger.c:412:2: warning: Value stored to 'curr' is never read [clang-analyzer-deadcode.DeadStores] curr = twl4030_charger_get_current(); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/power/supply/twl4030_charger.c:412:2: note: Value stored to 'curr' is never read curr = twl4030_charger_get_current(); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/power/supply/twl4030_charger.c:467:4: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores] ret = twl4030_clear_set_boot_bci(0, TWL4030_BCIAUTOUSB); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/power/supply/twl4030_charger.c:467:4: note: Value stored to 'ret' is never read ret = twl4030_clear_set_boot_bci(0, TWL4030_BCIAUTOUSB); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/power/supply/twl4030_charger.c:487:4: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores] ret = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, 0x33, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/power/supply/twl4030_charger.c:487:4: note: Value stored to 'ret' is never read ret = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, 0x33, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/power/supply/twl4030_charger.c:490:4: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores] ret = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, 0x2a, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/power/supply/twl4030_charger.c:490:4: note: Value stored to 'ret' is never read ret = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, 0x2a, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/power/supply/twl4030_charger.c:493:4: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores] ret = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, 0x26, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/power/supply/twl4030_charger.c:493:4: note: Value stored to 'ret' is never read ret = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, 0x26, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/power/supply/twl4030_charger.c:496:4: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores] ret = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, 0xf3, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/power/supply/twl4030_charger.c:496:4: note: Value stored to 'ret' is never read ret = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, 0xf3, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/power/supply/twl4030_charger.c:499:4: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores] ret = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, 0x9c, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/power/supply/twl4030_charger.c:499:4: note: Value stored to 'ret' is never read ret = twl_i2c_write_u8(TWL_MODULE_MAIN_CHARGE, 0x9c, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 11 warnings (9 in non-user code, 2 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. 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. 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. 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. 19 warnings generated. >> drivers/ptp/ptp_ocp.c:1845:2: warning: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 [clang-analyzer-security.insecureAPI.strcpy] strcpy(ans, def); ^~~~~~ drivers/ptp/ptp_ocp.c:1845:2: note: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 strcpy(ans, def); ^~~~~~ >> drivers/ptp/ptp_ocp.c:1849:3: warning: Value stored to 'ans' is never read [clang-analyzer-deadcode.DeadStores] ans += sprintf(ans, "%s ", sec); ^ ~~~~~~~~~~~~~~~~~~~~~~~~ drivers/ptp/ptp_ocp.c:1849:3: note: Value stored to 'ans' is never read ans += sprintf(ans, "%s ", sec); ^ ~~~~~~~~~~~~~~~~~~~~~~~~ drivers/ptp/ptp_ocp.c:1975:3: warning: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 [clang-analyzer-security.insecureAPI.strcpy] strcpy(buf, "unknown"); ^~~~~~ drivers/ptp/ptp_ocp.c:1975:3: note: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 strcpy(buf, "unknown"); ^~~~~~ Suppressed 16 warnings (16 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. 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. 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. 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. 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. 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. 11 warnings generated. Suppressed 11 warnings (10 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. 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. 8 warnings generated. drivers/comedi/drivers/pcmmio.c:578:2: warning: Value stored to 'val' is never read [clang-analyzer-deadcode.DeadStores] val |= inb(iobase + PCMMIO_AI_MSB_REG) << 8; ^ drivers/comedi/drivers/pcmmio.c:578:2: note: Value stored to 'val' is never read 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. 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. 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. drivers/comedi/drivers/addi_apci_3xxx.c:745:3: warning: Value stored to 'val' is never read [clang-analyzer-deadcode.DeadStores] val = readl(dev->mmio + 28); ^ drivers/comedi/drivers/addi_apci_3xxx.c:745:3: note: Value stored to 'val' is never read 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. drivers/gpu/drm/i915/gt/uc/intel_huc.c:93:2: warning: Value stored to 'copied' is never read [clang-analyzer-deadcode.DeadStores] copied = intel_uc_fw_copy_rsa(&huc->fw, vaddr, vma->size); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/i915/gt/uc/intel_huc.c:93:2: note: Value stored to 'copied' is never read copied = intel_uc_fw_copy_rsa(&huc->fw, vaddr, vma->size); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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. 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. 17 warnings generated. Suppressed 17 warnings (17 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. vim +1845 drivers/ptp/ptp_ocp.c f67bf662d2cffa Jonathan Lemon 2021-09-14 1838 f67bf662d2cffa Jonathan Lemon 2021-09-14 1839 static void f67bf662d2cffa Jonathan Lemon 2021-09-14 1840 gpio_multi_map(char *buf, u32 gpio, u32 bit, f67bf662d2cffa Jonathan Lemon 2021-09-14 1841 const char *pri, const char *sec, const char *def) f67bf662d2cffa Jonathan Lemon 2021-09-14 1842 { f67bf662d2cffa Jonathan Lemon 2021-09-14 1843 char *ans = buf; f67bf662d2cffa Jonathan Lemon 2021-09-14 1844 f67bf662d2cffa Jonathan Lemon 2021-09-14 @1845 strcpy(ans, def); f67bf662d2cffa Jonathan Lemon 2021-09-14 1846 if (gpio & (1 << bit)) f67bf662d2cffa Jonathan Lemon 2021-09-14 1847 ans += sprintf(ans, "%s ", pri); f67bf662d2cffa Jonathan Lemon 2021-09-14 1848 if (gpio & (1 << (bit + 16))) f67bf662d2cffa Jonathan Lemon 2021-09-14 @1849 ans += sprintf(ans, "%s ", sec); f67bf662d2cffa Jonathan Lemon 2021-09-14 1850 } f67bf662d2cffa Jonathan Lemon 2021-09-14 1851 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org