Re: [PATCH v3] Memory leak error in qxl unbind

[kernel test robot]

Hi Óscar,

kernel test robot noticed the following build errors:

[auto build test ERROR on drm-misc/drm-misc-next]
[also build test ERROR on linus/master v7.2-rc5 next-20260731]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/scar-Meg-a-L-pez/Memory-leak-error-in-qxl-unbind/20260803-140059
base:   https://gitlab.freedesktop.org/drm/misc/kernel.git drm-misc-next
patch link:    https://lore.kernel.org/r/20260727114155.69204-1-megia.oscar%40gmail.com
patch subject: [PATCH v3] Memory leak error in qxl unbind
config: loongarch-defconfig (https://download.01.org/0day-ci/archive/20260803/202608031807.sRyvtAVm-lkp@xxxxxxxxx/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project bacfe2950f8218268fcc0a8765644ea0c15f0360)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260803/202608031807.sRyvtAVm-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202608031807.sRyvtAVm-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

>> drivers/gpu/drm/ttm/ttm_pool.c:1510:9: error: use of undeclared identifier 'backup_fault_inject'
    1510 |     if (backup_fault_inject.dname) {
         |         ^~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/ttm/ttm_pool.c:1511:14: error: use of undeclared identifier 'backup_fault_inject'
    1511 |         dput(backup_fault_inject.dname);
         |              ^~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/ttm/ttm_pool.c:1512:9: error: use of undeclared identifier 'backup_fault_inject'
    1512 |         backup_fault_inject.dname = NULL;
         |         ^~~~~~~~~~~~~~~~~~~
   3 errors generated.


vim +/backup_fault_inject +1510 drivers/gpu/drm/ttm/ttm_pool.c

  1502	
  1503	/**
  1504	 * ttm_pool_mgr_fini - Finalize globals
  1505	 *
  1506	 * Cleanup the global pools and unregister the MM shrinker.
  1507	 */
  1508	void ttm_pool_mgr_fini(void)
  1509	{
> 1510	    if (backup_fault_inject.dname) {

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