Re: [PATCH] net: set proper memcg for net_init hooks allocations

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Hi Vasily,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v5.18-rc3 next-20220422]
[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/Vasily-Averin/net-set-proper-memcg-for-net_init-hooks-allocations/20220423-160759
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git c00c5e1d157bec0ef0b0b59aa5482eb8dc7e8e49
config: powerpc-buildonly-randconfig-r004-20220422 (https://download.01.org/0day-ci/archive/20220423/202204231728.QUjBA8ZH-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 5bd87350a5ae429baf8f373cb226a57b62f87280)
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
        # install powerpc cross compiling tool for clang build
        # apt-get install binutils-powerpc-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/3b379e5391e36e13b9f36305aa6d233fb03d4e58
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Vasily-Averin/net-set-proper-memcg-for-net_init-hooks-allocations/20220423-160759
        git checkout 3b379e5391e36e13b9f36305aa6d233fb03d4e58
        # 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=powerpc prepare

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

All errors (new ones prefixed by >>):

   In file included from arch/powerpc/kernel/asm-offsets.c:21:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
>> include/linux/memcontrol.h:1773:38: error: incomplete definition of type 'struct mem_cgroup'
           } while (memcg && !css_tryget(&memcg->css));
                                          ~~~~~^
   include/linux/mm_types.h:31:8: note: forward declaration of 'struct mem_cgroup'
   struct mem_cgroup;
          ^
   1 error generated.
   make[2]: *** [scripts/Makefile.build:120: arch/powerpc/kernel/asm-offsets.s] Error 1
   make[2]: Target '__build' not remade because of errors.
   make[1]: *** [Makefile:1194: prepare0] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:219: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.


vim +1773 include/linux/memcontrol.h

  1765	
  1766	static inline struct mem_cgroup *get_mem_cgroup_from_kmem(void *p)
  1767	{
  1768		struct mem_cgroup *memcg;
  1769	
  1770		rcu_read_lock();
  1771		do {
  1772			memcg = mem_cgroup_from_obj(p);
> 1773		} while (memcg && !css_tryget(&memcg->css));

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp



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