* Re: [PATCH v2 next 2/4] lib: mul_u64_u64_div_u64() Use BUG_ON() for divide by zero [not found] <20250518133848.5811-3-david.laight.linux@gmail.com> @ 2025-05-18 15:42 ` kernel test robot 2025-05-18 21:50 ` David Laight 0 siblings, 1 reply; 2+ messages in thread From: kernel test robot @ 2025-05-18 15:42 UTC (permalink / raw) To: David Laight, Andrew Morton, linux-kernel Cc: oe-kbuild-all, Linux Memory Management List, David Laight, u.kleine-koenig, Nicolas Pitre, Oleg Nesterov, Peter Zijlstra, Biju Das Hi David, kernel test robot noticed the following build errors: [auto build test ERROR on next-20250516] url: https://github.com/intel-lab-lkp/linux/commits/David-Laight/lib-mul_u64_u64_div_u64-rename-parameter-c-to-d/20250518-214037 base: next-20250516 patch link: https://lore.kernel.org/r/20250518133848.5811-3-david.laight.linux%40gmail.com patch subject: [PATCH v2 next 2/4] lib: mul_u64_u64_div_u64() Use BUG_ON() for divide by zero config: openrisc-allnoconfig (https://download.01.org/0day-ci/archive/20250518/202505182351.bPFZE1vO-lkp@intel.com/config) compiler: or1k-linux-gcc (GCC) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250518/202505182351.bPFZE1vO-lkp@intel.com/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@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202505182351.bPFZE1vO-lkp@intel.com/ All errors (new ones prefixed by >>): lib/math/div64.c: In function 'mul_u64_u64_div_u64': >> lib/math/div64.c:190:9: error: implicit declaration of function 'BUG_ON' [-Wimplicit-function-declaration] 190 | BUG_ON(!d); | ^~~~~~ vim +/BUG_ON +190 lib/math/div64.c 185 186 #ifndef mul_u64_u64_div_u64 187 u64 mul_u64_u64_div_u64(u64 a, u64 b, u64 d) 188 { 189 /* Trigger exception if divisor is zero */ > 190 BUG_ON(!d); 191 192 if (ilog2(a) + ilog2(b) <= 62) 193 return div64_u64(a * b, d); 194 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki ^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH v2 next 2/4] lib: mul_u64_u64_div_u64() Use BUG_ON() for divide by zero 2025-05-18 15:42 ` [PATCH v2 next 2/4] lib: mul_u64_u64_div_u64() Use BUG_ON() for divide by zero kernel test robot @ 2025-05-18 21:50 ` David Laight 0 siblings, 0 replies; 2+ messages in thread From: David Laight @ 2025-05-18 21:50 UTC (permalink / raw) To: kernel test robot Cc: Andrew Morton, linux-kernel, oe-kbuild-all, Linux Memory Management List, u.kleine-koenig, Nicolas Pitre, Oleg Nesterov, Peter Zijlstra, Biju Das On Sun, 18 May 2025 23:42:44 +0800 kernel test robot <lkp@intel.com> wrote: > Hi David, > > kernel test robot noticed the following build errors: > > [auto build test ERROR on next-20250516] > > url: https://github.com/intel-lab-lkp/linux/commits/David-Laight/lib-mul_u64_u64_div_u64-rename-parameter-c-to-d/20250518-214037 > base: next-20250516 > patch link: https://lore.kernel.org/r/20250518133848.5811-3-david.laight.linux%40gmail.com > patch subject: [PATCH v2 next 2/4] lib: mul_u64_u64_div_u64() Use BUG_ON() for divide by zero > config: openrisc-allnoconfig (https://download.01.org/0day-ci/archive/20250518/202505182351.bPFZE1vO-lkp@intel.com/config) > compiler: or1k-linux-gcc (GCC) 14.2.0 > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250518/202505182351.bPFZE1vO-lkp@intel.com/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@intel.com> > | Closes: https://lore.kernel.org/oe-kbuild-all/202505182351.bPFZE1vO-lkp@intel.com/ > > All errors (new ones prefixed by >>): > > lib/math/div64.c: In function 'mul_u64_u64_div_u64': > >> lib/math/div64.c:190:9: error: implicit declaration of function 'BUG_ON' [-Wimplicit-function-declaration] > 190 | BUG_ON(!d); > | ^~~~~~ compiles fine on x86 :-( ^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2025-05-18 21:50 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
[not found] <20250518133848.5811-3-david.laight.linux@gmail.com>
2025-05-18 15:42 ` [PATCH v2 next 2/4] lib: mul_u64_u64_div_u64() Use BUG_ON() for divide by zero kernel test robot
2025-05-18 21:50 ` David Laight
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox