On 2021/6/30 15:25, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev > head: d578b99443fde0968246cc7cbf3bc3016123c2f4 > commit: 4ba3fcdde7e36af93610ceb3cc38365b14539865 [27/31] jbd2,ext4: add a shrinker to release checkpointed buffers > config: xtensa-randconfig-s032-20210628 (attached as .config) > compiler: xtensa-linux-gcc (GCC) 9.3.0 > reproduce: > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # apt-get install sparse > # sparse version: v0.6.3-341-g8af24329-dirty > # https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=4ba3fcdde7e36af93610ceb3cc38365b14539865 > git remote add ext4 https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git > git fetch --no-tags ext4 dev > git checkout 4ba3fcdde7e36af93610ceb3cc38365b14539865 > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=xtensa > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@xxxxxxxxx> > > All errors (new ones prefixed by >>, old ones prefixed by <<): > >>> ERROR: modpost: "jbd2_journal_unregister_shrinker" undefined! >>> ERROR: modpost: "jbd2_journal_register_shrinker" undefined! > Oh, sorry, I forget to export these two function, I will send a fix patch soon. Yi.