[linux-next:master 5294/5318] kernel/user.c:141:30: error: 'struct user_struct' has no member named 'epoll_watches'; did you mean 'nr_watches'?

[kernel test robot <lkp@xxxxxxxxx>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   2f73937c9aa561e2082839bc1a8efaac75d6e244
commit: fcd5f8174782fea2929ffd9e734e2c3f1636e425 [5294/5318] fs/epoll: use a per-cpu counter for user's watches count
config: openrisc-randconfig-r013-20210805 (attached as .config)
compiler: or1k-linux-gcc (GCC) 10.3.0
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://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=fcd5f8174782fea2929ffd9e734e2c3f1636e425
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout fcd5f8174782fea2929ffd9e734e2c3f1636e425
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross O=build_dir ARCH=openrisc SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

   kernel/user.c: In function 'free_user':
>> kernel/user.c:141:30: error: 'struct user_struct' has no member named 'epoll_watches'; did you mean 'nr_watches'?
     141 |  percpu_counter_destroy(&up->epoll_watches);
         |                              ^~~~~~~~~~~~~
         |                              nr_watches
   In file included from include/linux/sched/user.h:7,
                    from kernel/user.c:17:
   kernel/user.c: In function 'alloc_uid':
   kernel/user.c:189:33: error: 'struct user_struct' has no member named 'epoll_watches'; did you mean 'nr_watches'?
     189 |   if (percpu_counter_init(&new->epoll_watches, 0, GFP_KERNEL)) {
         |                                 ^~~~~~~~~~~~~
   include/linux/percpu_counter.h:38:25: note: in definition of macro 'percpu_counter_init'
      38 |   __percpu_counter_init(fbc, value, gfp, &__key);  \
         |                         ^~~
   kernel/user.c:203:33: error: 'struct user_struct' has no member named 'epoll_watches'; did you mean 'nr_watches'?
     203 |    percpu_counter_destroy(&new->epoll_watches);
         |                                 ^~~~~~~~~~~~~
         |                                 nr_watches
   In file included from include/linux/sched/user.h:7,
                    from kernel/user.c:17:
   kernel/user.c: In function 'uid_cache_init':
   kernel/user.c:225:37: error: 'struct user_struct' has no member named 'epoll_watches'; did you mean 'nr_watches'?
     225 |  if (percpu_counter_init(&root_user.epoll_watches, 0, GFP_KERNEL))
         |                                     ^~~~~~~~~~~~~
   include/linux/percpu_counter.h:38:25: note: in definition of macro 'percpu_counter_init'
      38 |   __percpu_counter_init(fbc, value, gfp, &__key);  \
         |                         ^~~


vim +141 kernel/user.c

   131	
   132	/* IRQs are disabled and uidhash_lock is held upon function entry.
   133	 * IRQ state (as stored in flags) is restored and uidhash_lock released
   134	 * upon function exit.
   135	 */
   136	static void free_user(struct user_struct *up, unsigned long flags)
   137		__releases(&uidhash_lock)
   138	{
   139		uid_hash_remove(up);
   140		spin_unlock_irqrestore(&uidhash_lock, flags);
 > 141		percpu_counter_destroy(&up->epoll_watches);
   142		kmem_cache_free(uid_cachep, up);
   143	}
   144	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

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