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; | ^~ 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
