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Date: Mon, 6 Mar 2023 13:37:08 +0800
From: kernel test robot <lkp@...el.com>
To: Mark Rutland <mark.rutland@....com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
Catalin Marinas <catalin.marinas@....com>
Subject: drivers/acpi/acpica/tbfind.c:60:9: warning: 'strncpy' specified
bound 6 equals destination size
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: fe15c26ee26efa11741a7b632e9f23b01aca4cc6
commit: 8f9e0a52810dd83406c768972d022c37e7a18f1f ACPI: Don't build ACPICA with '-Os'
date: 6 weeks ago
config: arm64-randconfig-r036-20230306 (https://download.01.org/0day-ci/archive/20230306/202303061307.1SmLWTQp-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 12.1.0
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=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
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm64 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/acpi/acpica/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303061307.1SmLWTQp-lkp@intel.com/
All warnings (new ones prefixed by >>):
drivers/acpi/acpica/tbfind.c: In function 'acpi_tb_find_table':
>> drivers/acpi/acpica/tbfind.c:60:9: warning: 'strncpy' specified bound 6 equals destination size [-Wstringop-truncation]
60 | strncpy(header.oem_id, oem_id, ACPI_OEM_ID_SIZE);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/acpi/acpica/tbfind.c:61:9: warning: 'strncpy' specified bound 8 equals destination size [-Wstringop-truncation]
61 | strncpy(header.oem_table_id, oem_table_id, ACPI_OEM_TABLE_ID_SIZE);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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 <robert.moore@...el.com>
:::::: CC: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
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