Hi Tony, I love your patch! Perhaps something to improve: [auto build test WARNING on s390/features] [also build test WARNING on linus/master next-20201022] [cannot apply to kvms390/next linux/master v5.9] [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/0day-ci/linux/commits/Tony-Krowiak/s390-vfio-ap-dynamic-configuration-support/20201023-011543 base: https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git features config: s390-allyesconfig (attached as .config) compiler: s390-linux-gcc (GCC) 9.3.0 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/0day-ci/linux/commit/32786ef6d4ba3703d993a8894ea1d763785fd3a4 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Tony-Krowiak/s390-vfio-ap-dynamic-configuration-support/20201023-011543 git checkout 32786ef6d4ba3703d993a8894ea1d763785fd3a4 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): drivers/s390/crypto/vfio_ap_ops.c:1316:5: warning: no previous prototype for 'vfio_ap_mdev_reset_queue' [-Wmissing-prototypes] 1316 | int vfio_ap_mdev_reset_queue(unsigned int apid, unsigned int apqi, | ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/s390/crypto/vfio_ap_ops.c:1568:6: warning: no previous prototype for 'vfio_ap_mdev_hot_unplug_queue' [-Wmissing-prototypes] 1568 | void vfio_ap_mdev_hot_unplug_queue(struct vfio_ap_queue *q) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/s390/crypto/vfio_ap_ops.c: In function 'vfio_ap_mdev_on_cfg_remove': >> drivers/s390/crypto/vfio_ap_ops.c:1777:7: warning: variable 'unassigned' set but not used [-Wunused-but-set-variable] 1777 | bool unassigned = false; | ^~~~~~~~~~ drivers/s390/crypto/vfio_ap_ops.c: At top level: >> drivers/s390/crypto/vfio_ap_ops.c:1813:6: warning: no previous prototype for 'vfio_ap_mdev_on_cfg_add' [-Wmissing-prototypes] 1813 | void vfio_ap_mdev_on_cfg_add(void) | ^~~~~~~~~~~~~~~~~~~~~~~ In file included from drivers/s390/crypto/vfio_ap_ops.c:11: In function 'memcpy', inlined from 'vfio_ap_mdev_unassign_apids' at drivers/s390/crypto/vfio_ap_ops.c:1655:3, inlined from 'vfio_ap_mdev_on_cfg_remove' at drivers/s390/crypto/vfio_ap_ops.c:1800:8, inlined from 'vfio_ap_on_cfg_changed' at drivers/s390/crypto/vfio_ap_ops.c:1836:2: include/linux/string.h:402:4: error: call to '__read_overflow2' declared with attribute error: detected read beyond size of object passed as 2nd parameter 402 | __read_overflow2(); | ^~~~~~~~~~~~~~~~~~ vim +/unassigned +1777 drivers/s390/crypto/vfio_ap_ops.c 1774 1775 static void vfio_ap_mdev_on_cfg_remove(void) 1776 { > 1777 bool unassigned = false; 1778 int ap_remove, aq_remove; 1779 struct ap_matrix_mdev *matrix_mdev; 1780 DECLARE_BITMAP(apid_rem, AP_DEVICES); 1781 DECLARE_BITMAP(apqi_rem, AP_DOMAINS); 1782 unsigned long *cur_apm, *cur_aqm, *prev_apm, *prev_aqm; 1783 1784 cur_apm = (unsigned long *)matrix_dev->config_info.apm; 1785 cur_aqm = (unsigned long *)matrix_dev->config_info.aqm; 1786 prev_apm = (unsigned long *)matrix_dev->config_info_prev.apm; 1787 prev_aqm = (unsigned long *)matrix_dev->config_info_prev.aqm; 1788 1789 ap_remove = bitmap_andnot(apid_rem, prev_apm, cur_apm, AP_DEVICES); 1790 aq_remove = bitmap_andnot(apqi_rem, prev_aqm, cur_aqm, AP_DOMAINS); 1791 1792 if (!ap_remove && !aq_remove) 1793 return; 1794 1795 list_for_each_entry(matrix_mdev, &matrix_dev->mdev_list, node) { 1796 if (!vfio_ap_mdev_has_crycb(matrix_mdev)) 1797 continue; 1798 1799 if (ap_remove) { 1800 if (vfio_ap_mdev_unassign_apids(matrix_mdev, apid_rem)) 1801 unassigned = true; 1802 vfio_ap_mdev_unlink_apids(matrix_mdev, apid_rem); 1803 } 1804 1805 if (aq_remove) { 1806 if (vfio_ap_mdev_unassign_apqis(matrix_mdev, apqi_rem)) 1807 unassigned = true; 1808 vfio_ap_mdev_unlink_apqis(matrix_mdev, apqi_rem); 1809 } 1810 } 1811 } 1812 > 1813 void vfio_ap_mdev_on_cfg_add(void) 1814 { 1815 unsigned long *cur_apm, *cur_aqm, *prev_apm, *prev_aqm; 1816 1817 cur_apm = (unsigned long *)matrix_dev->config_info.apm; 1818 cur_aqm = (unsigned long *)matrix_dev->config_info.aqm; 1819 1820 prev_apm = (unsigned long *)matrix_dev->config_info_prev.apm; 1821 prev_aqm = (unsigned long *)matrix_dev->config_info_prev.aqm; 1822 1823 bitmap_andnot(matrix_dev->ap_add, cur_apm, prev_apm, AP_DEVICES); 1824 bitmap_andnot(matrix_dev->aq_add, cur_aqm, prev_aqm, AP_DOMAINS); 1825 } 1826 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
Attachment:
.config.gz
Description: application/gzip
