linux-kernel - Re: [PATCH 1/2] mm: memory_hotplug: enumerate all supported section flags

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Date:   Thu, 19 May 2022 23:51:56 +0800
From:   kernel test robot <lkp@...el.com>
To:     Muchun Song <songmuchun@...edance.com>, corbet@....net,
        akpm@...ux-foundation.org, paulmck@...nel.org,
        mike.kravetz@...cle.com, osalvador@...e.de, david@...hat.com
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, duanxiongchun@...edance.com, smuchun@...il.com,
        Muchun Song <songmuchun@...edance.com>
Subject: Re: [PATCH 1/2] mm: memory_hotplug: enumerate all supported section
 flags

Hi Muchun,

I love your patch! Yet something to improve:

[auto build test ERROR on akpm-mm/mm-everything]
[also build test ERROR on linux/master linus/master v5.18-rc7 next-20220519]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/intel-lab-lkp/linux/commits/Muchun-Song/make-hugetlb_optimize_vmemmap-compatible-with-memmap_on_memory/20220519-204849
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
config: x86_64-randconfig-a016 (https://download.01.org/0day-ci/archive/20220519/202205192323.hAhv52wX-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project e00cbbec06c08dc616a0d52a20f678b8fbd4e304)
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://github.com/intel-lab-lkp/linux/commit/94ab57cfaebf53ff1c57cc6c8b3ecc48bef31c5e
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Muchun-Song/make-hugetlb_optimize_vmemmap-compatible-with-memmap_on_memory/20220519-204849
        git checkout 94ab57cfaebf53ff1c57cc6c8b3ecc48bef31c5e
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 prepare

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   In file included from arch/x86/kernel/asm-offsets.c:9:
   In file included from include/linux/crypto.h:20:
   In file included from include/linux/slab.h:15:
   In file included from include/linux/gfp.h:6:
>> include/linux/mmzone.h:1506:44: error: use of undeclared identifier 'SECTION_TAINT_ZONE_DEVICE'
           unsigned long flags = SECTION_IS_ONLINE | SECTION_TAINT_ZONE_DEVICE;
                                                     ^
   In file included from arch/x86/kernel/asm-offsets.c:13:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   In file included from include/linux/memcontrol.h:13:
   In file included from include/linux/cgroup.h:17:
   In file included from include/linux/fs.h:33:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:97:11: warning: array index 3 is past the end of the array (which contains 1 element) [-Warray-bounds]
                   return (set->sig[3] | set->sig[2] |
                           ^        ~
   arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
           ^
   In file included from arch/x86/kernel/asm-offsets.c:13:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   In file included from include/linux/memcontrol.h:13:
   In file included from include/linux/cgroup.h:17:
   In file included from include/linux/fs.h:33:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:97:25: warning: array index 2 is past the end of the array (which contains 1 element) [-Warray-bounds]
                   return (set->sig[3] | set->sig[2] |
                                         ^        ~
   arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
           ^
   In file included from arch/x86/kernel/asm-offsets.c:13:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   In file included from include/linux/memcontrol.h:13:
   In file included from include/linux/cgroup.h:17:
   In file included from include/linux/fs.h:33:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:98:4: warning: array index 1 is past the end of the array (which contains 1 element) [-Warray-bounds]
                           set->sig[1] | set->sig[0]) == 0;
                           ^        ~
   arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
           ^
   In file included from arch/x86/kernel/asm-offsets.c:13:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   In file included from include/linux/memcontrol.h:13:
   In file included from include/linux/cgroup.h:17:
   In file included from include/linux/fs.h:33:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:100:11: warning: array index 1 is past the end of the array (which contains 1 element) [-Warray-bounds]
                   return (set->sig[1] | set->sig[0]) == 0;
                           ^        ~
   arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
           ^
   In file included from arch/x86/kernel/asm-offsets.c:13:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   In file included from include/linux/memcontrol.h:13:
   In file included from include/linux/cgroup.h:17:
   In file included from include/linux/fs.h:33:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:113:11: warning: array index 3 is past the end of the array (which contains 1 element) [-Warray-bounds]
                   return  (set1->sig[3] == set2->sig[3]) &&
                            ^         ~
   arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
           ^
   In file included from arch/x86/kernel/asm-offsets.c:13:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   In file included from include/linux/memcontrol.h:13:
   In file included from include/linux/cgroup.h:17:
   In file included from include/linux/fs.h:33:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:
   In file included from include/linux/sched/signal.h:6:
   include/linux/signal.h:113:27: warning: array index 3 is past the end of the array (which contains 1 element) [-Warray-bounds]
                   return  (set1->sig[3] == set2->sig[3]) &&
                                            ^         ~
   arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
           ^
   In file included from arch/x86/kernel/asm-offsets.c:13:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   In file included from include/linux/memcontrol.h:13:
   In file included from include/linux/cgroup.h:17:
   In file included from include/linux/fs.h:33:
   In file included from include/linux/percpu-rwsem.h:7:
   In file included from include/linux/rcuwait.h:6:


vim +/SECTION_TAINT_ZONE_DEVICE +1506 include/linux/mmzone.h

2d070eab2e8270 Michal Hocko 2017-07-06  1503  
1f90a3477df3ff Dan Williams 2021-02-25  1504  static inline int online_device_section(struct mem_section *section)
1f90a3477df3ff Dan Williams 2021-02-25  1505  {
1f90a3477df3ff Dan Williams 2021-02-25 @1506  	unsigned long flags = SECTION_IS_ONLINE | SECTION_TAINT_ZONE_DEVICE;
1f90a3477df3ff Dan Williams 2021-02-25  1507  
1f90a3477df3ff Dan Williams 2021-02-25  1508  	return section && ((section->section_mem_map & flags) == flags);
1f90a3477df3ff Dan Williams 2021-02-25  1509  }
1f90a3477df3ff Dan Williams 2021-02-25  1510  

-- 
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