On Tue, Jun 20, 2023 at 7:15 PM kernel test robot <lkp@xxxxxxxxx> wrote: > > Hi Suren, > > kernel test robot noticed the following build errors: > > [auto build test ERROR on akpm-mm/mm-everything] > > url: https://github.com/intel-lab-lkp/linux/commits/Suren-Baghdasaryan/mm-change-vma_start_read-to-fail-to-lock-a-detached-VMA/20230621-075833 > base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything > patch link: https://lore.kernel.org/r/20230620235726.3873043-3-surenb%40google.com > patch subject: [PATCH 3/3] mm: check for VMA being detached before destroying it > config: alpha-allyesconfig (https://download.01.org/0day-ci/archive/20230621/202306211007.hQoEsMrP-lkp@xxxxxxxxx/config) > compiler: alpha-linux-gcc (GCC) 12.3.0 > reproduce: (https://download.01.org/0day-ci/archive/20230621/202306211007.hQoEsMrP-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/202306211007.hQoEsMrP-lkp@xxxxxxxxx/ > > All errors (new ones prefixed by >>): > > scripts/genksyms/parse.y: warning: 9 shift/reduce conflicts [-Wconflicts-sr] > scripts/genksyms/parse.y: warning: 5 reduce/reduce conflicts [-Wconflicts-rr] > scripts/genksyms/parse.y: note: rerun with option '-Wcounterexamples' to generate conflict counterexamples > In file included from include/linux/pid_namespace.h:7, > from include/linux/ptrace.h:10, > from arch/alpha/kernel/asm-offsets.c:11: > include/linux/mm.h: In function 'vma_init': > >> include/linux/mm.h:753:12: error: 'struct vm_area_struct' has no member named 'detached' > 753 | vma->detached = true; > | ^~ Yep, missed #ifdef CONFIG_PER_VMA_LOCK here. Will fix it in the next version but will wait a bit for possible feedback. > arch/alpha/kernel/asm-offsets.c: At top level: > arch/alpha/kernel/asm-offsets.c:15:6: warning: no previous prototype for 'foo' [-Wmissing-prototypes] > 15 | void foo(void) > | ^~~ > make[2]: *** [scripts/Makefile.build:114: arch/alpha/kernel/asm-offsets.s] Error 1 > make[2]: Target 'prepare' not remade because of errors. > make[1]: *** [Makefile:1287: prepare0] Error 2 > make[1]: Target 'prepare' not remade because of errors. > make: *** [Makefile:226: __sub-make] Error 2 > make: Target 'prepare' not remade because of errors. > > > vim +753 include/linux/mm.h > > 740 > 741 /* > 742 * WARNING: vma_init does not initialize vma->vm_lock. > 743 * Use vm_area_alloc()/vm_area_free() if vma needs locking. > 744 */ > 745 static inline void vma_init(struct vm_area_struct *vma, struct mm_struct *mm) > 746 { > 747 static const struct vm_operations_struct dummy_vm_ops = {}; > 748 > 749 memset(vma, 0, sizeof(*vma)); > 750 vma->vm_mm = mm; > 751 vma->vm_ops = &dummy_vm_ops; > 752 INIT_LIST_HEAD(&vma->anon_vma_chain); > > 753 vma->detached = true; > 754 vma_numab_state_init(vma); > 755 } > 756 > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki
