Hello, yeah, I was grepping the sources whether I can see an external use of jbd2_debug() and didn't notice the macro in include/linux/jbd2.h that is calling __jbd2_debug() is actually called jbd_debug(). I actually think we should use ext4_debug() instead of jbd_debug() in ext4 code but anyway, my patches need tweaking... Honza On Wed 08-06-22 10:29:23, kernel test robot wrote: > Hi Jan, > > I love your patch! Yet something to improve: > > [auto build test ERROR on tytso-ext4/dev] > [also build test ERROR on linus/master v5.19-rc1 next-20220607] > [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] > > url: https://github.com/intel-lab-lkp/linux/commits/Jan-Kara/jbd2-Remove-unused-exports-for-jbd2-debugging/20220606-224629 > base: https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev > config: microblaze-buildonly-randconfig-r012-20220605 (https://download.01.org/0day-ci/archive/20220608/202206081021.Y85M7FUG-lkp@xxxxxxxxx/config) > compiler: microblaze-linux-gcc (GCC) 11.3.0 > 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://github.com/intel-lab-lkp/linux/commit/9aaaac58ce0525ce441ad75b45bf3e5f3911a82b > git remote add linux-review https://github.com/intel-lab-lkp/linux > git fetch --no-tags linux-review Jan-Kara/jbd2-Remove-unused-exports-for-jbd2-debugging/20220606-224629 > git checkout 9aaaac58ce0525ce441ad75b45bf3e5f3911a82b > # save the config file > mkdir build_dir && cp config build_dir/.config > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=microblaze SHELL=/bin/bash > > If you fix the issue, kindly add following tag where applicable > Reported-by: kernel test robot <lkp@xxxxxxxxx> > > All errors (new ones prefixed by >>, old ones prefixed by <<): > > >> ERROR: modpost: "__jbd2_debug" [fs/ext4/ext4.ko] undefined! > > -- > 0-DAY CI Kernel Test Service > https://01.org/lkp -- Jan Kara <jack@xxxxxxxx> SUSE Labs, CR