On Sun, Jan 14, 2024 at 01:40:11AM +0800, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-nonmm-unstable > head: 3d69c575710800c9a4a58e94c157697310e32027 > commit: a868f9c8816cb72f983d1ff940b0938737fe8ee7 [22/23] lib/group_cpus: fix initialization section in group_cpus_evenly() > config: i386-randconfig-011-20240113 (https://download.01.org/0day-ci/archive/20240114/202401140117.pwAcsXAT-lkp@xxxxxxxxx/config) > compiler: ClangBuiltLinux clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240114/202401140117.pwAcsXAT-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/202401140117.pwAcsXAT-lkp@xxxxxxxxx/ > > All errors (new ones prefixed by >>): > > >> lib/group_cpus.c:352:16: error: array initializer must be an initializer list > 352 | cpumask_var_t npresmsk __free(free_cpumask_var) = NULL; > | ^ > 1 error generated. Not a compiler specific error, as evidenced by the GCC report: https://lore.kernel.org/202401160231.mSAgDn9b-lkp@xxxxxxxxx/ Neither configuration has CONFIG_CPUMASK_OFFSTACK, which is not going to be enabled for most configurations, as it is not user selectable without CONFIG_DEBUG_PER_CPU_MAPS and there are only a few conditions where it is force selected. In other words, I suspect this error is going to be quite widespread if it hits -next. I can still reproduce it at the current mm-nonmm-unstable, commit 08be2d243fb7 ("lib/sort: Optimize heapsort with double-pop variation"). Cheers, Nathan
