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Fri, 07 Apr 2023 07:02:31 +0000 Date: Fri, 7 Apr 2023 15:02:15 +0800 From: kernel test robot To: Mark Rutland Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Catalin Marinas Subject: drivers/acpi/acpica/tbfind.c:60:9: error: 'strncpy' specified bound 6 equals destination size Message-ID: <202304071552.CeeIBr5P-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Mark, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: f2afccfefe7be1f7346564fe619277110d341f9b commit: 8f9e0a52810dd83406c768972d022c37e7a18f1f ACPI: Don't build ACPICA with '-Os' date: 2 months ago config: x86_64-sof-customedconfig-fuzz-defconfig (https://download.01.org/0day-ci/archive/20230407/202304071552.CeeIBr5P-lkp@intel.com/config) compiler: gcc-11 (Debian 11.3.0-8) 11.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8f9e0a52810dd83406c768972d022c37e7a18f1f git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 8f9e0a52810dd83406c768972d022c37e7a18f1f # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 olddefconfig make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot | Link: https://lore.kernel.org/oe-kbuild-all/202304071552.CeeIBr5P-lkp@intel.com/ All errors (new ones prefixed by >>): drivers/acpi/acpica/tbfind.c: In function 'acpi_tb_find_table': >> drivers/acpi/acpica/tbfind.c:60:9: error: 'strncpy' specified bound 6 equals destination size [-Werror=stringop-truncation] 60 | strncpy(header.oem_id, oem_id, ACPI_OEM_ID_SIZE); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/acpi/acpica/tbfind.c:61:9: error: 'strncpy' specified bound 8 equals destination size [-Werror=stringop-truncation] 61 | strncpy(header.oem_table_id, oem_table_id, ACPI_OEM_TABLE_ID_SIZE); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors vim +/strncpy +60 drivers/acpi/acpica/tbfind.c f3d2e7865c8162 drivers/acpi/tables/tbfind.c Bob Moore 2007-02-02 16 f3d2e7865c8162 drivers/acpi/tables/tbfind.c Bob Moore 2007-02-02 17 /******************************************************************************* f3d2e7865c8162 drivers/acpi/tables/tbfind.c Bob Moore 2007-02-02 18 * f3d2e7865c8162 drivers/acpi/tables/tbfind.c Bob Moore 2007-02-02 19 * FUNCTION: acpi_tb_find_table f3d2e7865c8162 drivers/acpi/tables/tbfind.c Bob Moore 2007-02-02 20 * ba494beeaa69bc drivers/acpi/acpica/tbfind.c Bob Moore 2012-07-12 21 * PARAMETERS: signature - String with ACPI table signature f3d2e7865c8162 drivers/acpi/tables/tbfind.c Bob Moore 2007-02-02 22 * oem_id - String with the table OEM ID f3d2e7865c8162 drivers/acpi/tables/tbfind.c Bob Moore 2007-02-02 23 * oem_table_id - String with the OEM Table ID f3d2e7865c8162 drivers/acpi/tables/tbfind.c Bob Moore 2007-02-02 24 * table_index - Where the table index is returned f3d2e7865c8162 drivers/acpi/tables/tbfind.c Bob Moore 2007-02-02 25 * f3d2e7865c8162 drivers/acpi/tables/tbfind.c Bob Moore 2007-02-02 26 * RETURN: Status and table index f3d2e7865c8162 drivers/acpi/tables/tbfind.c Bob Moore 2007-02-02 27 * f3d2e7865c8162 drivers/acpi/tables/tbfind.c Bob Moore 2007-02-02 28 * DESCRIPTION: Find an ACPI table (in the RSDT/XSDT) that matches the f3d2e7865c8162 drivers/acpi/tables/tbfind.c Bob Moore 2007-02-02 29 * Signature, OEM ID and OEM Table ID. Returns an index that can f3d2e7865c8162 drivers/acpi/tables/tbfind.c Bob Moore 2007-02-02 30 * be used to get the table header or entire table. f3d2e7865c8162 drivers/acpi/tables/tbfind.c Bob Moore 2007-02-02 31 * f3d2e7865c8162 drivers/acpi/tables/tbfind.c Bob Moore 2007-02-02 32 ******************************************************************************/ f3d2e7865c8162 drivers/acpi/tables/tbfind.c Bob Moore 2007-02-02 33 acpi_status f3d2e7865c8162 drivers/acpi/tables/tbfind.c Bob Moore 2007-02-02 34 acpi_tb_find_table(char *signature, 67a119f990063f drivers/acpi/tables/tbfind.c Bob Moore 2008-06-10 35 char *oem_id, char *oem_table_id, u32 *table_index) f3d2e7865c8162 drivers/acpi/tables/tbfind.c Bob Moore 2007-02-02 36 { ac0f06ebb815da drivers/acpi/acpica/tbfind.c Lv Zheng 2016-09-07 37 acpi_status status = AE_OK; 47c08729bf1c60 drivers/acpi/tables/tbfind.c Lin Ming 2008-04-10 38 struct acpi_table_header header; 9f41fd8a175ff8 drivers/acpi/acpica/tbfind.c Bob Moore 2015-08-25 39 u32 i; f3d2e7865c8162 drivers/acpi/tables/tbfind.c Bob Moore 2007-02-02 40 f3d2e7865c8162 drivers/acpi/tables/tbfind.c Bob Moore 2007-02-02 41 ACPI_FUNCTION_TRACE(tb_find_table); f3d2e7865c8162 drivers/acpi/tables/tbfind.c Bob Moore 2007-02-02 42 9f41fd8a175ff8 drivers/acpi/acpica/tbfind.c Bob Moore 2015-08-25 43 /* Validate the input table signature */ 9f41fd8a175ff8 drivers/acpi/acpica/tbfind.c Bob Moore 2015-08-25 44 6a0df32c22fdfc drivers/acpi/acpica/tbfind.c Bob Moore 2016-05-05 45 if (!acpi_ut_valid_nameseg(signature)) { 9f41fd8a175ff8 drivers/acpi/acpica/tbfind.c Bob Moore 2015-08-25 46 return_ACPI_STATUS(AE_BAD_SIGNATURE); 9f41fd8a175ff8 drivers/acpi/acpica/tbfind.c Bob Moore 2015-08-25 47 } 9f41fd8a175ff8 drivers/acpi/acpica/tbfind.c Bob Moore 2015-08-25 48 9f41fd8a175ff8 drivers/acpi/acpica/tbfind.c Bob Moore 2015-08-25 49 /* Don't allow the OEM strings to be too long */ 9f41fd8a175ff8 drivers/acpi/acpica/tbfind.c Bob Moore 2015-08-25 50 9f41fd8a175ff8 drivers/acpi/acpica/tbfind.c Bob Moore 2015-08-25 51 if ((strlen(oem_id) > ACPI_OEM_ID_SIZE) || 9f41fd8a175ff8 drivers/acpi/acpica/tbfind.c Bob Moore 2015-08-25 52 (strlen(oem_table_id) > ACPI_OEM_TABLE_ID_SIZE)) { 9f41fd8a175ff8 drivers/acpi/acpica/tbfind.c Bob Moore 2015-08-25 53 return_ACPI_STATUS(AE_AML_STRING_LIMIT); 9f41fd8a175ff8 drivers/acpi/acpica/tbfind.c Bob Moore 2015-08-25 54 } 9f41fd8a175ff8 drivers/acpi/acpica/tbfind.c Bob Moore 2015-08-25 55 47c08729bf1c60 drivers/acpi/tables/tbfind.c Lin Ming 2008-04-10 56 /* Normalize the input strings */ 47c08729bf1c60 drivers/acpi/tables/tbfind.c Lin Ming 2008-04-10 57 4fa4616e279df8 drivers/acpi/acpica/tbfind.c Bob Moore 2015-07-01 58 memset(&header, 0, sizeof(struct acpi_table_header)); a3ce7a8e0dd9ba drivers/acpi/acpica/tbfind.c Bob Moore 2019-04-08 59 ACPI_COPY_NAMESEG(header.signature, signature); 4fa4616e279df8 drivers/acpi/acpica/tbfind.c Bob Moore 2015-07-01 @60 strncpy(header.oem_id, oem_id, ACPI_OEM_ID_SIZE); :::::: The code at line 60 was first introduced by commit :::::: 4fa4616e279df89baeb36287bbee83ab272edaed ACPICA: De-macroize calls to standard C library functions :::::: TO: Bob Moore :::::: CC: Rafael J. 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