tree:   git://people.freedesktop.org/~mlankhorst/linux locking-rework
head:   c48a37ca23222c49b902eb19133c02dc6f92d3f9
commit: c117654818b538ff6eec2e88051b47826207d9de [28/29] remove obj->mm.lock
config: i386-defconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-14) 9.3.0
reproduce (this is a W=1 build):
        git checkout c117654818b538ff6eec2e88051b47826207d9de
        # save the attached .config to linux build tree
        make W=1 ARCH=i386 

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

All errors (new ones prefixed by >>):

   In file included from include/linux/rhashtable-types.h:14,
                    from include/linux/ipc.h:7,
                    from include/uapi/linux/sem.h:5,
                    from include/linux/sem.h:5,
                    from include/linux/sched.h:15,
                    from include/linux/sched/mm.h:7,
                    from drivers/gpu/drm/i915/gem/i915_gem_object.c:25:
   drivers/gpu/drm/i915/gem/i915_gem_object.c: In function 'i915_gem_object_init':
>> drivers/gpu/drm/i915/gem/i915_gem_object.c:56:22: error: 'struct <anonymous>' has no member named 'lock'; did you mean 'blocks'?
      56 |  mutex_init(&obj->mm.lock);
         |                      ^~~~
   include/linux/mutex.h:108:16: note: in definition of macro 'mutex_init'
     108 |  __mutex_init((mutex), #mutex, &__key);    \
         |                ^~~~~
   drivers/gpu/drm/i915/gem/i915_gem_object.c:79:22: error: 'struct <anonymous>' has no member named 'lock'; did you mean 'blocks'?
      79 |             &obj->mm.lock);
         |                      ^~~~
         |                      blocks
--
   In file included from include/linux/spinlock_types.h:18,
                    from include/linux/spinlock.h:83,
                    from include/linux/mmzone.h:8,
                    from include/linux/gfp.h:6,
                    from include/linux/slab.h:15,
                    from include/linux/io-mapping.h:10,
                    from drivers/gpu/drm/i915/i915_drv.h:36,
                    from drivers/gpu/drm/i915/gem/i915_gem_pages.c:7:
   drivers/gpu/drm/i915/gem/i915_gem_pages.c: In function '__i915_gem_object_set_pages':
>> drivers/gpu/drm/i915/gem/i915_gem_pages.c:21:31: error: 'struct <anonymous>' has no member named 'lock'; did you mean 'blocks'?
      21 |  lockdep_assert_held(&obj->mm.lock);
         |                               ^~~~
   include/linux/lockdep.h:545:46: note: in definition of macro 'lockdep_assert_held'
     545 | #define lockdep_assert_held(l)   do { (void)(l); } while (0)
         |                                              ^
   In file included from include/linux/notifier.h:14,
                    from arch/x86/include/asm/uprobes.h:13,
                    from include/linux/uprobes.h:49,
                    from include/linux/mm_types.h:14,
                    from include/linux/mmzone.h:21,
                    from include/linux/gfp.h:6,
                    from include/linux/slab.h:15,
                    from include/linux/io-mapping.h:10,
                    from drivers/gpu/drm/i915/i915_drv.h:36,
                    from drivers/gpu/drm/i915/gem/i915_gem_pages.c:7:
   drivers/gpu/drm/i915/gem/i915_gem_pages.c: In function '__i915_gem_object_get_pages':
   drivers/gpu/drm/i915/gem/i915_gem_pages.c:112:49: error: 'struct <anonymous>' has no member named 'lock'; did you mean 'blocks'?
     112 |  err = mutex_lock_interruptible_nested(&obj->mm.lock, I915_MM_GET_PAGES);
         |                                                 ^~~~
   include/linux/mutex.h:174:83: note: in definition of macro 'mutex_lock_interruptible_nested'
     174 | # define mutex_lock_interruptible_nested(lock, subclass) mutex_lock_interruptible(lock)
         |                                                                                   ^~~~
   drivers/gpu/drm/i915/gem/i915_gem_pages.c:128:24: error: 'struct <anonymous>' has no member named 'lock'; did you mean 'blocks'?
     128 |  mutex_unlock(&obj->mm.lock);
         |                        ^~~~
         |                        blocks
   In file included from include/linux/spinlock_types.h:18,
                    from include/linux/spinlock.h:83,
                    from include/linux/mmzone.h:8,
                    from include/linux/gfp.h:6,
                    from include/linux/slab.h:15,
                    from include/linux/io-mapping.h:10,
                    from drivers/gpu/drm/i915/i915_drv.h:36,
                    from drivers/gpu/drm/i915/gem/i915_gem_pages.c:7:
   drivers/gpu/drm/i915/gem/i915_gem_pages.c: In function 'i915_gem_object_writeback':
   drivers/gpu/drm/i915/gem/i915_gem_pages.c:143:31: error: 'struct <anonymous>' has no member named 'lock'; did you mean 'blocks'?
     143 |  lockdep_assert_held(&obj->mm.lock);
         |                               ^~~~
   include/linux/lockdep.h:545:46: note: in definition of macro 'lockdep_assert_held'
     545 | #define lockdep_assert_held(l)   do { (void)(l); } while (0)
         |                                              ^
   drivers/gpu/drm/i915/gem/i915_gem_pages.c: In function '__i915_gem_object_put_pages':
   drivers/gpu/drm/i915/gem/i915_gem_pages.c:203:22: error: 'struct <anonymous>' has no member named 'lock'; did you mean 'blocks'?
     203 |  mutex_lock(&obj->mm.lock);
         |                      ^~~~
         |                      blocks
   drivers/gpu/drm/i915/gem/i915_gem_pages.c:232:24: error: 'struct <anonymous>' has no member named 'lock'; did you mean 'blocks'?
     232 |  mutex_unlock(&obj->mm.lock);
         |                        ^~~~
         |                        blocks
   In file included from include/linux/notifier.h:14,
                    from arch/x86/include/asm/uprobes.h:13,
                    from include/linux/uprobes.h:49,
                    from include/linux/mm_types.h:14,
                    from include/linux/mmzone.h:21,
                    from include/linux/gfp.h:6,
                    from include/linux/slab.h:15,
                    from include/linux/io-mapping.h:10,
                    from drivers/gpu/drm/i915/i915_drv.h:36,
                    from drivers/gpu/drm/i915/gem/i915_gem_pages.c:7:
   drivers/gpu/drm/i915/gem/i915_gem_pages.c: In function 'i915_gem_object_pin_map':
   drivers/gpu/drm/i915/gem/i915_gem_pages.c:328:49: error: 'struct <anonymous>' has no member named 'lock'; did you mean 'blocks'?
     328 |  err = mutex_lock_interruptible_nested(&obj->mm.lock, I915_MM_GET_PAGES);
         |                                                 ^~~~
   include/linux/mutex.h:174:83: note: in definition of macro 'mutex_lock_interruptible_nested'
     174 | # define mutex_lock_interruptible_nested(lock, subclass) mutex_lock_interruptible(lock)
         |                                                                                   ^~~~
   drivers/gpu/drm/i915/gem/i915_gem_pages.c:373:24: error: 'struct <anonymous>' has no member named 'lock'; did you mean 'blocks'?
     373 |  mutex_unlock(&obj->mm.lock);
         |                        ^~~~
         |                        blocks
--
   In file included from include/linux/notifier.h:14,
                    from arch/x86/include/asm/uprobes.h:13,
                    from include/linux/uprobes.h:49,
                    from include/linux/mm_types.h:14,
                    from include/linux/mmzone.h:21,
                    from include/linux/gfp.h:6,
                    from include/linux/xarray.h:14,
                    from include/linux/radix-tree.h:18,
                    from include/linux/fs.h:15,
                    from include/linux/highmem.h:5,
                    from drivers/gpu/drm/i915/gem/i915_gem_phys.c:7:
   drivers/gpu/drm/i915/gem/i915_gem_phys.c: In function 'i915_gem_object_attach_phys':
>> drivers/gpu/drm/i915/gem/i915_gem_phys.c:177:29: error: 'struct <anonymous>' has no member named 'lock'; did you mean 'blocks'?
     177 |  mutex_lock_nested(&obj->mm.lock, I915_MM_GET_PAGES);
         |                             ^~~~
   include/linux/mutex.h:173:55: note: in definition of macro 'mutex_lock_nested'
     173 | # define mutex_lock_nested(lock, subclass) mutex_lock(lock)
         |                                                       ^~~~
   drivers/gpu/drm/i915/gem/i915_gem_phys.c:220:24: error: 'struct <anonymous>' has no member named 'lock'; did you mean 'blocks'?
     220 |  mutex_unlock(&obj->mm.lock);
         |                        ^~~~
         |                        blocks
--
   drivers/gpu/drm/i915/gem/i915_gem_shrinker.c: In function 'i915_gem_shrink':
>> drivers/gpu/drm/i915/gem/i915_gem_shrinker.c:204:25: error: 'struct <anonymous>' has no member named 'lock'; did you mean 'blocks'?
     204 |     mutex_lock(&obj->mm.lock);
         |                         ^~~~
         |                         blocks
   drivers/gpu/drm/i915/gem/i915_gem_shrinker.c:209:27: error: 'struct <anonymous>' has no member named 'lock'; did you mean 'blocks'?
     209 |     mutex_unlock(&obj->mm.lock);
         |                           ^~~~
         |                           blocks
--
   drivers/gpu/drm/i915/gem/i915_gem_tiling.c: In function 'i915_gem_object_set_tiling':
>> drivers/gpu/drm/i915/gem/i915_gem_tiling.c:268:22: error: 'struct <anonymous>' has no member named 'lock'; did you mean 'blocks'?
     268 |  mutex_lock(&obj->mm.lock);
         |                      ^~~~
         |                      blocks
   drivers/gpu/drm/i915/gem/i915_gem_tiling.c:283:24: error: 'struct <anonymous>' has no member named 'lock'; did you mean 'blocks'?
     283 |  mutex_unlock(&obj->mm.lock);
         |                        ^~~~
         |                        blocks

vim +56 drivers/gpu/drm/i915/gem/i915_gem_object.c

    51	
    52	void i915_gem_object_init(struct drm_i915_gem_object *obj,
    53				  const struct drm_i915_gem_object_ops *ops,
    54				  struct lock_class_key *key)
    55	{
  > 56		mutex_init(&obj->mm.lock);
    57	
    58		spin_lock_init(&obj->vma.lock);
    59		INIT_LIST_HEAD(&obj->vma.list);
    60	
    61		INIT_LIST_HEAD(&obj->mm.link);
    62	
    63		INIT_LIST_HEAD(&obj->lut_list);
    64		spin_lock_init(&obj->lut_lock);
    65	
    66		spin_lock_init(&obj->mmo.lock);
    67		obj->mmo.offsets = RB_ROOT;
    68	
    69		init_rcu_head(&obj->rcu);
    70	
    71		obj->ops = ops;
    72	
    73		obj->mm.madv = I915_MADV_WILLNEED;
    74		INIT_RADIX_TREE(&obj->mm.get_page.radix, GFP_KERNEL | __GFP_NOWARN);
    75		mutex_init(&obj->mm.get_page.lock);
    76	
    77		if (IS_ENABLED(CONFIG_LOCKDEP) && i915_gem_object_is_shrinkable(obj))
    78			i915_gem_shrinker_taints_mutex(to_i915(obj->base.dev),
    79						       &obj->mm.lock);
    80	}
    81	

---
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