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Fri, 29 Apr 2022 23:16:24 +0000 Date: Sat, 30 Apr 2022 07:15:31 +0800 From: kernel test robot To: Mark Rutland Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org Subject: [mark:arm64/ftrace/per-callsite-ops 4/6] include/acpi/actypes.h:525:42: warning: 'strncpy' specified bound 4 equals destination size Message-ID: <202204300707.nx8b88Lb-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 tree: https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git arm64/ftrace/per-callsite-ops head: 2aaba224d039a36f7eca5ad68c77686d3546e4fa commit: be98798b102a3e28fa0832c9c0473f42e14abe8b [4/6] HACK: arm64: ftrace: align pre-function literal pool config: ia64-gensparse_defconfig (https://download.01.org/0day-ci/archive/20220430/202204300707.nx8b88Lb-lkp@intel.com/config) compiler: ia64-linux-gcc (GCC) 11.3.0 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/mark/linux.git/commit/?id=be98798b102a3e28fa0832c9c0473f42e14abe8b git remote add mark https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git git fetch --no-tags mark arm64/ftrace/per-callsite-ops git checkout be98798b102a3e28fa0832c9c0473f42e14abe8b # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=ia64 SHELL=/bin/bash drivers/acpi/acpica/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): In file included from include/acpi/acpi.h:24, from drivers/acpi/acpica/tbfind.c:10: drivers/acpi/acpica/tbfind.c: In function 'acpi_tb_find_table': >> include/acpi/actypes.h:525:42: warning: 'strncpy' specified bound 4 equals destination size [-Wstringop-truncation] 525 | #define ACPI_COPY_NAMESEG(dest,src) (strncpy (ACPI_CAST_PTR (char, (dest)), ACPI_CAST_PTR (char, (src)), ACPI_NAMESEG_SIZE)) | ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/acpi/acpica/tbfind.c:59:9: note: in expansion of macro 'ACPI_COPY_NAMESEG' 59 | ACPI_COPY_NAMESEG(header.signature, signature); | ^~~~~~~~~~~~~~~~~ -- In file included from include/acpi/acpi.h:24, from drivers/acpi/acpica/utstring.c:8: drivers/acpi/acpica/utstring.c: In function 'acpi_ut_repair_name': >> include/acpi/actypes.h:525:42: warning: 'strncpy' specified bound 4 equals destination size [-Wstringop-truncation] 525 | #define ACPI_COPY_NAMESEG(dest,src) (strncpy (ACPI_CAST_PTR (char, (dest)), ACPI_CAST_PTR (char, (src)), ACPI_NAMESEG_SIZE)) | ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/acpi/acpica/utstring.c:148:9: note: in expansion of macro 'ACPI_COPY_NAMESEG' 148 | ACPI_COPY_NAMESEG(&original_name, name); | ^~~~~~~~~~~~~~~~~ vim +/strncpy +525 include/acpi/actypes.h ff60027174cf94b Bob Moore 2012-10-31 519 50df4d8b0f6e197 Bob Moore 2008-12-31 520 #ifndef ACPI_MISALIGNMENT_NOT_SUPPORTED 5599fb69355d7a5 Bob Moore 2019-04-08 521 #define ACPI_COMPARE_NAMESEG(a,b) (*ACPI_CAST_PTR (u32, (a)) == *ACPI_CAST_PTR (u32, (b))) a3ce7a8e0dd9baa Bob Moore 2019-04-08 522 #define ACPI_COPY_NAMESEG(dest,src) (*ACPI_CAST_PTR (u32, (dest)) = *ACPI_CAST_PTR (u32, (src))) 50df4d8b0f6e197 Bob Moore 2008-12-31 523 #else 3278675567dfb90 Bob Moore 2019-04-08 524 #define ACPI_COMPARE_NAMESEG(a,b) (!strncmp (ACPI_CAST_PTR (char, (a)), ACPI_CAST_PTR (char, (b)), ACPI_NAMESEG_SIZE)) 3278675567dfb90 Bob Moore 2019-04-08 @525 #define ACPI_COPY_NAMESEG(dest,src) (strncpy (ACPI_CAST_PTR (char, (dest)), ACPI_CAST_PTR (char, (src)), ACPI_NAMESEG_SIZE)) 50df4d8b0f6e197 Bob Moore 2008-12-31 526 #endif 50df4d8b0f6e197 Bob Moore 2008-12-31 527 :::::: The code at line 525 was first introduced by commit :::::: 3278675567dfb901d831d46849c386a4f932905e ACPICA: Rename nameseg length macro/define for clarity :::::: TO: Bob Moore :::::: CC: Rafael J. 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