Re: [PATCH bpf-next 2/2] bpf: Switch bpf arena to use drm_mm instead of maple_tree

[kernel test robot <lkp@intel.com>]

Hi Alexei,

kernel test robot noticed the following build errors:

[auto build test ERROR on bpf-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Alexei-Starovoitov/drm-bpf-Move-drm_mm-c-to-lib-to-be-used-by-bpf-arena/20241102-075645
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
patch link:    https://lore.kernel.org/r/20241101235453.63380-3-alexei.starovoitov%40gmail.com
patch subject: [PATCH bpf-next 2/2] bpf: Switch bpf arena to use drm_mm instead of maple_tree
config: sparc-randconfig-r061-20241105 (https://download.01.org/0day-ci/archive/20241105/202411052322.GENc72sg-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241105/202411052322.GENc72sg-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411052322.GENc72sg-lkp@intel.com/

All errors (new ones prefixed by >>):

   sparc64-linux-ld: lib/drm_mm.o: in function `drm_mm_takedown':
>> lib/drm_mm.c:135:(.text+0x470): undefined reference to `__drm_err'
>> sparc64-linux-ld: lib/drm_mm.c:129:(.text+0x4ac): undefined reference to `__drm_err'


vim +135 lib/drm_mm.c

5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31  117  
5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31  118  static void show_leaks(struct drm_mm *mm)
5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31  119  {
5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31  120  	struct drm_mm_node *node;
5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31  121  	char *buf;
5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31  122  
5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31  123  	buf = kmalloc(BUFSZ, GFP_KERNEL);
5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31  124  	if (!buf)
5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31  125  		return;
5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31  126  
2bc98c86517b08 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-12-22  127  	list_for_each_entry(node, drm_mm_nodes(mm), node_list) {
5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31  128  		if (!node->stack) {
5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31 @129  			DRM_ERROR("node [%08llx + %08llx]: unknown owner\n",
5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31  130  				  node->start, node->size);
5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31  131  			continue;
5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31  132  		}
5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31  133  
0f68d45ef41abb drivers/gpu/drm/drm_mm.c Imran Khan   2021-11-08  134  		stack_depot_snprint(node->stack, buf, BUFSZ, 0);
5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31 @135  		DRM_ERROR("node [%08llx + %08llx]: inserted at\n%s",
5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31  136  			  node->start, node->size, buf);
5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31  137  	}
5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31  138  
5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31  139  	kfree(buf);
5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31  140  }
5705670d046342 drivers/gpu/drm/drm_mm.c Chris Wilson 2016-10-31  141  

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