Messages in this thread | | | Date | Tue, 25 Apr 2023 07:06:10 +0800 | From | kernel test robot <> | Subject | Re: [PATCH 1/4] RISC-V: create ISA string separately - not as part of cpuinfo |
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Hi Heiko,
kernel test robot noticed the following build warnings:
[auto build test WARNING on next-20230424] [also build test WARNING on v6.3] [cannot apply to soc/for-next linus/master kees/for-next/execve v6.3 v6.3-rc7 v6.3-rc6] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Heiko-Stuebner/RISC-V-create-ISA-string-separately-not-as-part-of-cpuinfo/20230425-035214 base: next-20230424 patch link: https://lore.kernel.org/r/20230424194911.264850-2-heiko.stuebner%40vrull.eu patch subject: [PATCH 1/4] RISC-V: create ISA string separately - not as part of cpuinfo config: riscv-allyesconfig (https://download.01.org/0day-ci/archive/20230425/202304250614.g73yVtvv-lkp@intel.com/config) compiler: riscv64-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://github.com/intel-lab-lkp/linux/commit/8f1a5a16616d673f2c82cdc54ff845fd8b125a21 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Heiko-Stuebner/RISC-V-create-ISA-string-separately-not-as-part-of-cpuinfo/20230425-035214 git checkout 8f1a5a16616d673f2c82cdc54ff845fd8b125a21 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=riscv olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash arch/riscv/kernel/
If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@intel.com> | Link: https://lore.kernel.org/oe-kbuild-all/202304250614.g73yVtvv-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from include/linux/string.h:254, from include/linux/bitmap.h:11, from include/linux/cpumask.h:12, from include/linux/smp.h:13, from include/linux/lockdep.h:14, from include/linux/rcupdate.h:29, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from include/linux/ratelimit.h:6, from include/linux/dev_printk.h:16, from include/linux/device.h:15, from include/linux/node.h:18, from include/linux/cpu.h:17, from arch/riscv/kernel/cpu.c:6: In function 'strnlen', inlined from 'strncat' at include/linux/fortify-string.h:404:13, inlined from 'riscv_create_isa_string' at arch/riscv/kernel/cpu.c:269:4: >> include/linux/fortify-string.h:29:33: warning: 'strlen' argument missing terminating nul [-Wstringop-overread] 29 | __ret = __builtin_strlen(__p); \ | ^~~~~~~~~~~~~~~~~~~~~ include/linux/fortify-string.h:195:24: note: in expansion of macro '__compiletime_strlen' 195 | size_t p_len = __compiletime_strlen(p); | ^~~~~~~~~~~~~~~~~~~~ arch/riscv/kernel/cpu.c: In function 'riscv_create_isa_string': arch/riscv/kernel/cpu.c:245:19: note: referenced argument declared here 245 | static const char base_riscv_exts[13] = "imafdqcbkjpvh"; | ^~~~~~~~~~~~~~~
vim +/strlen +29 include/linux/fortify-string.h
a28a6e860c6cf2 Francis Laniel 2021-02-25 18 3009f891bb9f32 Kees Cook 2021-08-02 19 #define __compiletime_strlen(p) \ 3009f891bb9f32 Kees Cook 2021-08-02 20 ({ \ e9a40e1585d792 Kees Cook 2022-10-25 21 char *__p = (char *)(p); \ 311fb40aa0569a Kees Cook 2022-09-02 22 size_t __ret = SIZE_MAX; \ 9f7d69c5cd2390 Kees Cook 2022-09-19 23 size_t __p_size = __member_size(p); \ 311fb40aa0569a Kees Cook 2022-09-02 24 if (__p_size != SIZE_MAX && \ d07c0acb4f41cc Kees Cook 2022-09-02 25 __builtin_constant_p(*__p)) { \ 95cadae320be46 Qian Cai 2021-10-25 26 size_t __p_len = __p_size - 1; \ 95cadae320be46 Qian Cai 2021-10-25 27 if (__builtin_constant_p(__p[__p_len]) && \ 95cadae320be46 Qian Cai 2021-10-25 28 __p[__p_len] == '\0') \ 95cadae320be46 Qian Cai 2021-10-25 @29 __ret = __builtin_strlen(__p); \ 3009f891bb9f32 Kees Cook 2021-08-02 30 } \ 95cadae320be46 Qian Cai 2021-10-25 31 __ret; \ 3009f891bb9f32 Kees Cook 2021-08-02 32 }) 3009f891bb9f32 Kees Cook 2021-08-02 33
-- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
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