tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.4.y head: 12a5ce113626ce8208aef76d4d2e9fc93ea48ddf commit: 3910babeac1ab031f4e178042cbd1af9a9a0ec51 [4610/5583] compiler.h: fix error in BUILD_BUG_ON() reporting config: parisc-randconfig-r012-20210411 (attached as .config) compiler: hppa-linux-gcc (GCC) 9.3.0 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/stable/linux-stable-rc.gi... git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git git fetch --no-tags linux-stable-rc linux-5.4.y git checkout 3910babeac1ab031f4e178042cbd1af9a9a0ec51 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=parisc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from include/linux/mm.h:99, from include/linux/bvec.h:13, from include/linux/skbuff.h:17, from include/linux/if_ether.h:19, from include/linux/etherdevice.h:20, from drivers/net/wireless/mediatek/mt76/mt7615/mac.c:10: include/asm-generic/pgtable.h: In function 'pte_clear_not_present_full': arch/parisc/include/asm/pgtable.h:91:9: warning: variable 'old_pte' set but not used [-Wunused-but-set-variable] 91 | pte_t old_pte; \ | ^~~~~~~ arch/parisc/include/asm/pgtable.h:316:34: note: in expansion of macro 'set_pte_at' 316 | #define pte_clear(mm, addr, xp) set_pte_at(mm, addr, xp, __pte(0)) | ^~~~~~~~~~ include/asm-generic/pgtable.h:201:2: note: in expansion of macro 'pte_clear' 201 | pte_clear(mm, address, ptep); | ^~~~~~~~~ include/asm-generic/pgtable.h: In function '__ptep_modify_prot_commit': arch/parisc/include/asm/pgtable.h:91:9: warning: variable 'old_pte' set but not used [-Wunused-but-set-variable] 91 | pte_t old_pte; \ | ^~~~~~~ include/asm-generic/pgtable.h:629:2: note: in expansion of macro 'set_pte_at' 629 | set_pte_at(vma->vm_mm, addr, ptep, pte); | ^~~~~~~~~~ In file included from include/linux/kernel.h:11, from include/linux/skbuff.h:13, from include/linux/if_ether.h:19, from include/linux/etherdevice.h:20, from drivers/net/wireless/mediatek/mt76/mt7615/mac.c:10: drivers/net/wireless/mediatek/mt76/mt7615/mac.c: In function 'to_rssi': 350 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler.h:331:4: note: in definition of macro '__compiletime_assert' 331 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler.h:350:2: note: in expansion of macro '_compiletime_assert' 350 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' 39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) | ^~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:46:3: note: in expansion of macro 'BUILD_BUG_ON_MSG' 46 | BUILD_BUG_ON_MSG(!__builtin_constant_p(_mask), \ | ^~~~~~~~~~~~~~~~ include/linux/bitfield.h:95:3: note: in expansion of macro '__BF_FIELD_CHECK' 95 | __BF_FIELD_CHECK(_mask, _reg, 0U, "FIELD_GET: "); \ | ^~~~~~~~~~~~~~~~ drivers/net/wireless/mediatek/mt76/mt7615/mac.c:18:10: note: in expansion of macro 'FIELD_GET' 18 | return (FIELD_GET(field, rxv) - 220) / 2; | ^~~~~~~~~ include/linux/compiler.h:350:38: error: call to '__compiletime_assert_262' declared with attribute error: BUILD_BUG_ON failed: (((field) + (1ULL << (__builtin_ffsll(field) - 1))) & (((field) + (1ULL << (__builtin_ffsll(field) - 1))) - 1)) != 0 350 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler.h:331:4: note: in definition of macro '__compiletime_assert' 331 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler.h:350:2: note: in expansion of macro '_compiletime_assert' 350 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' 39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) | ^~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:50:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' 50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition) | ^~~~~~~~~~~~~~~~ include/linux/build_bug.h:21:2: note: in expansion of macro 'BUILD_BUG_ON' 21 | BUILD_BUG_ON(((n) & ((n) - 1)) != 0) | ^~~~~~~~~~~~ include/linux/bitfield.h:54:3: note: in expansion of macro '__BUILD_BUG_ON_NOT_POWER_OF_2' 54 | __BUILD_BUG_ON_NOT_POWER_OF_2((_mask) + \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:95:3: note: in expansion of macro '__BF_FIELD_CHECK' 95 | __BF_FIELD_CHECK(_mask, _reg, 0U, "FIELD_GET: "); \ | ^~~~~~~~~~~~~~~~ drivers/net/wireless/mediatek/mt76/mt7615/mac.c:18:10: note: in expansion of macro 'FIELD_GET' 18 | return (FIELD_GET(field, rxv) - 220) / 2; | ^~~~~~~~~ vim +/__compiletime_assert_258 +350 include/linux/compiler.h 336 337 #define _compiletime_assert(condition, msg, prefix, suffix) \ 338 __compiletime_assert(condition, msg, prefix, suffix) 339 340 /** 341 * compiletime_assert - break build and emit msg if condition is false 342 * @condition: a compile-time constant condition to check 343 * @msg: a message to emit if condition is false 344 * 345 * In tradition of POSIX assert, this macro will break the build if the 346 * supplied condition is *false*, emitting the supplied error message if the 347 * compiler has support to do so. 348 */ 349 #define compiletime_assert(condition, msg) \ 351 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org