tree: https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git kbuild head: 8246a1e9b922c0e797ec28d8a602de1384ff8140 commit: 0bdad28369fc5e93de39b5046228ed78e982fc71 [5/7] kallsyms: Avoid weak references for kallsyms symbols config: i386-buildonly-randconfig-003-20240423 (https://download.01.org/0day-ci/archive/20240423/202404231047.eZ27wCnE-lkp@xxxxxxxxx/config) compiler: gcc-9 (Ubuntu 9.5.0-4ubuntu2) 9.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240423/202404231047.eZ27wCnE-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202404231047.eZ27wCnE-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): kernel/kallsyms.c: In function 'get_symbol_pos': >> kernel/kallsyms.c:181:56: warning: array subscript [0, 0] is outside array bounds of 'const int[1]' [-Warray-bounds] 181 | return kallsyms_relative_base + (u32)kallsyms_offsets[idx]; | ~~~~~~~~~~~~~~~~^~~~~ kernel/kallsyms.c:48:18: note: while referencing 'kallsyms_offsets' 48 | const int __weak kallsyms_offsets[1]; | ^~~~~~~~~~~~~~~~ vim +181 kernel/kallsyms.c ^1da177e4c3f415 Linus Torvalds 2005-04-16 173 30f3bb09778de64 Zhen Lei 2022-11-15 174 unsigned long kallsyms_sym_address(int idx) 2213e9a66bb87d8 Ard Biesheuvel 2016-03-15 175 { 2213e9a66bb87d8 Ard Biesheuvel 2016-03-15 176 if (!IS_ENABLED(CONFIG_KALLSYMS_BASE_RELATIVE)) 2213e9a66bb87d8 Ard Biesheuvel 2016-03-15 177 return kallsyms_addresses[idx]; 2213e9a66bb87d8 Ard Biesheuvel 2016-03-15 178 2213e9a66bb87d8 Ard Biesheuvel 2016-03-15 179 /* values are unsigned offsets if --absolute-percpu is not in effect */ 2213e9a66bb87d8 Ard Biesheuvel 2016-03-15 180 if (!IS_ENABLED(CONFIG_KALLSYMS_ABSOLUTE_PERCPU)) 2213e9a66bb87d8 Ard Biesheuvel 2016-03-15 @181 return kallsyms_relative_base + (u32)kallsyms_offsets[idx]; 2213e9a66bb87d8 Ard Biesheuvel 2016-03-15 182 2213e9a66bb87d8 Ard Biesheuvel 2016-03-15 183 /* ...otherwise, positive offsets are absolute values */ 2213e9a66bb87d8 Ard Biesheuvel 2016-03-15 184 if (kallsyms_offsets[idx] >= 0) 2213e9a66bb87d8 Ard Biesheuvel 2016-03-15 185 return kallsyms_offsets[idx]; 2213e9a66bb87d8 Ard Biesheuvel 2016-03-15 186 2213e9a66bb87d8 Ard Biesheuvel 2016-03-15 187 /* ...and negative offsets are relative to kallsyms_relative_base - 1 */ 2213e9a66bb87d8 Ard Biesheuvel 2016-03-15 188 return kallsyms_relative_base - 1 - kallsyms_offsets[idx]; 2213e9a66bb87d8 Ard Biesheuvel 2016-03-15 189 } 2213e9a66bb87d8 Ard Biesheuvel 2016-03-15 190 :::::: The code at line 181 was first introduced by commit :::::: 2213e9a66bb87d8344a1256b4ef568220d9587fb kallsyms: add support for relative offsets in kallsyms address table :::::: TO: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
