tree: https://github.com/ammarfaizi2/linux-block akpm/mm/mm-nonmm-unstable head: 09544e0fe8d686e5605f0c9028cb5aa5f50f1303 commit: c2468dc485ee31d15dc6b4efe8e8c86a0ef9b0e3 [36/51] minmax: sanity check constant bounds when clamping config: arm-buildonly-randconfig-r003-20221019 compiler: arm-linux-gnueabi-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/ammarfaizi2/linux-block/commit/c2468dc485ee31d15dc6b4efe8e8c86a0ef9b0e3 git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block git fetch --no-tags ammarfaizi2-block akpm/mm/mm-nonmm-unstable git checkout c2468dc485ee31d15dc6b4efe8e8c86a0ef9b0e3 # 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=arm SHELL=/bin/bash drivers/net/wireless/ralink/rt2x00/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All errors (new ones prefixed by >>): In file included from include/linux/container_of.h:5, from include/linux/kernel.h:21, from drivers/net/wireless/ralink/rt2x00/rt2800lib.c:25: drivers/net/wireless/ralink/rt2x00/rt2800lib.c: In function 'rt2800_txpower_to_dev': >> include/linux/build_bug.h:16:51: error: negative width in bit-field '' 16 | #define BUILD_BUG_ON_ZERO(e) ((int)(sizeof(struct { int:(-!!(e)); }))) | ^ include/linux/minmax.h:50:10: note: in expansion of macro 'BUILD_BUG_ON_ZERO' 50 | (BUILD_BUG_ON_ZERO(__builtin_choose_expr( \ | ^~~~~~~~~~~~~~~~~ include/linux/minmax.h:54:9: note: in expansion of macro '__clamp_input_check' 54 | __clamp_input_check(lo, hi) + \ | ^~~~~~~~~~~~~~~~~~~ include/linux/minmax.h:146:36: note: in expansion of macro '__careful_clamp' 146 | #define clamp_t(type, val, lo, hi) __careful_clamp((type)(val), (type)(lo), (type)(hi)) | ^~~~~~~~~~~~~~~ drivers/net/wireless/ralink/rt2x00/rt2800lib.c:4054:24: note: in expansion of macro 'clamp_t' 4054 | return clamp_t(char, txpower, MIN_A_TXPOWER, MAX_A_TXPOWER); | ^~~~~~~ vim +16 include/linux/build_bug.h bc6245e5efd70c Ian Abbott 2017-07-10 6 bc6245e5efd70c Ian Abbott 2017-07-10 7 #ifdef __CHECKER__ bc6245e5efd70c Ian Abbott 2017-07-10 8 #define BUILD_BUG_ON_ZERO(e) (0) bc6245e5efd70c Ian Abbott 2017-07-10 9 #else /* __CHECKER__ */ bc6245e5efd70c Ian Abbott 2017-07-10 10 /* bc6245e5efd70c Ian Abbott 2017-07-10 11 * Force a compilation error if condition is true, but also produce a 8788994376d84d Rikard Falkeborn 2019-12-04 12 * result (of value 0 and type int), so the expression can be used bc6245e5efd70c Ian Abbott 2017-07-10 13 * e.g. in a structure initializer (or where-ever else comma expressions bc6245e5efd70c Ian Abbott 2017-07-10 14 * aren't permitted). bc6245e5efd70c Ian Abbott 2017-07-10 15 */ 8788994376d84d Rikard Falkeborn 2019-12-04 @16 #define BUILD_BUG_ON_ZERO(e) ((int)(sizeof(struct { int:(-!!(e)); }))) 527edbc18a70e7 Masahiro Yamada 2019-01-03 17 #endif /* __CHECKER__ */ 527edbc18a70e7 Masahiro Yamada 2019-01-03 18 :::::: The code at line 16 was first introduced by commit :::::: 8788994376d84d627450fd0d67deb6a66ddf07d7 linux/build_bug.h: change type to int :::::: TO: Rikard Falkeborn :::::: CC: Linus Torvalds -- 0-DAY CI Kernel Test Service https://01.org/lkp