Hi Benjamin, kernel test robot noticed the following build errors: [auto build test ERROR on media-tree/master] [also build test ERROR on linus/master v6.4-rc7] [cannot apply to next-20230622] [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/Benjamin-Gaignard/media-videobuf2-Access-vb2_queue-bufs-array-through-helper-functions/20230622-214122 base: git://linuxtv.org/media_tree.git master patch link: https://lore.kernel.org/r/20230622131349.144160-11-benjamin.gaignard%40collabora.com patch subject: [PATCH v3 10/11] media: v4l2: Add DELETE_BUF ioctl config: i386-randconfig-i012-20230622 (https://download.01.org/0day-ci/archive/20230623/202306230822.0CCLmVt5-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce: (https://download.01.org/0day-ci/archive/20230623/202306230822.0CCLmVt5-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/202306230822.0CCLmVt5-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>, old ones prefixed by <<): >> ERROR: modpost: "vb2_core_delete_buf" [drivers/media/common/videobuf2/videobuf2-v4l2.ko] undefined! -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki