tree: git://git.infradead.org/users/hch/block.git block-fs.h-cleanup head: 1261c655dd25c5a21aafc9912a2b09a4956cf818 commit: 1261c655dd25c5a21aafc9912a2b09a4956cf818 [10/10] block: move struct block_device to blk_types.h 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 git checkout 1261c655dd25c5a21aafc9912a2b09a4956cf818 # 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(a)intel.com&gt; All error/warnings (new ones prefixed by >>, old ones prefixed by <<): In file included from drivers/s390/block/dasd_ioctl.c:25: 7 | extern int dasd_biodasdinfo(struct gendisk *disk, dasd_information2_t *info); | ^~~~~~~ drivers/s390/block/dasd_ioctl.c:684:5: error: conflicting types for 'dasd_biodasdinfo' 684 | int dasd_biodasdinfo(struct gendisk *disk, struct dasd_information2_t *info) | ^~~~~~~~~~~~~~~~ In file included from drivers/s390/block/dasd_ioctl.c:25: include/linux/dasd_mod.h:7:12: note: previous declaration of 'dasd_biodasdinfo' was here 7 | extern int dasd_biodasdinfo(struct gendisk *disk, dasd_information2_t *info); | ^~~~~~~~~~~~~~~~ In file included from include/linux/linkage.h:7, from include/linux/kernel.h:8, from include/linux/interrupt.h:6, from drivers/s390/block/dasd_ioctl.c:15: drivers/s390/block/dasd_ioctl.c:700:19: error: conflicting types for 'dasd_biodasdinfo' 700 | EXPORT_SYMBOL_GPL(dasd_biodasdinfo); | ^~~~~~~~~~~~~~~~ include/linux/export.h:98:21: note: in definition of macro '___EXPORT_SYMBOL' 98 | extern typeof(sym) sym; | ^~~ include/linux/export.h:155:34: note: in expansion of macro '__EXPORT_SYMBOL' 155 | #define _EXPORT_SYMBOL(sym, sec) __EXPORT_SYMBOL(sym, sec, "") | ^~~~~~~~~~~~~~~ include/linux/export.h:159:33: note: in expansion of macro '_EXPORT_SYMBOL' 159 | #define EXPORT_SYMBOL_GPL(sym) _EXPORT_SYMBOL(sym, "_gpl") | ^~~~~~~~~~~~~~ 700 | EXPORT_SYMBOL_GPL(dasd_biodasdinfo); | ^~~~~~~~~~~~~~~~~ In file included from drivers/s390/block/dasd_ioctl.c:25: include/linux/dasd_mod.h:7:12: note: previous declaration of 'dasd_biodasdinfo' was here 7 | extern int dasd_biodasdinfo(struct gendisk *disk, dasd_information2_t *info); | ^~~~~~~~~~~~~~~~ -- In file included from block/partitions/ibm.c:17: 7 | extern int dasd_biodasdinfo(struct gendisk *disk, dasd_information2_t *info); | ^~~~~~~ block/partitions/ibm.c: In function 'ibm_partition': 307 | fn = symbol_get(dasd_biodasdinfo); | ^ cc1: some warnings being treated as errors vim +307 block/partitions/ibm.c 46e8894786327c Stefan Weinhuber 2012-08-31 285 46e8894786327c Stefan Weinhuber 2012-08-31 286 46e8894786327c Stefan Weinhuber 2012-08-31 287 /* 46e8894786327c Stefan Weinhuber 2012-08-31 288 * This is the main function, called by check.c 46e8894786327c Stefan Weinhuber 2012-08-31 289 */ 46e8894786327c Stefan Weinhuber 2012-08-31 290 int ibm_partition(struct parsed_partitions *state) 46e8894786327c Stefan Weinhuber 2012-08-31 291 { 26d7e28e38206b Stefan Haberland 2020-05-19 292 int (*fn)(struct gendisk *disk, dasd_information2_t *info); 46e8894786327c Stefan Weinhuber 2012-08-31 293 struct block_device *bdev = state->bdev; 26d7e28e38206b Stefan Haberland 2020-05-19 294 struct gendisk *disk = bdev->bd_disk; 46e8894786327c Stefan Weinhuber 2012-08-31 295 int blocksize, res; 46e8894786327c Stefan Weinhuber 2012-08-31 296 loff_t i_size, offset, size; 46e8894786327c Stefan Weinhuber 2012-08-31 297 dasd_information2_t *info; 46e8894786327c Stefan Weinhuber 2012-08-31 298 struct hd_geometry *geo; 46e8894786327c Stefan Weinhuber 2012-08-31 299 char type[5] = {0,}; 46e8894786327c Stefan Weinhuber 2012-08-31 300 char name[7] = {0,}; 46e8894786327c Stefan Weinhuber 2012-08-31 301 sector_t labelsect; 46e8894786327c Stefan Weinhuber 2012-08-31 302 union label_t *label; 46e8894786327c Stefan Weinhuber 2012-08-31 303 46e8894786327c Stefan Weinhuber 2012-08-31 304 res = 0; 26d7e28e38206b Stefan Haberland 2020-05-19 305 if (!disk->fops->getgeo) 26d7e28e38206b Stefan Haberland 2020-05-19 306 goto out_exit; 26d7e28e38206b Stefan Haberland 2020-05-19 @307 fn = symbol_get(dasd_biodasdinfo); :::::: The code at line 307 was first introduced by commit :::::: 26d7e28e38206b1b3207af1409eee2269ab36f82 s390/dasd: remove ioctl_by_bdev calls :::::: TO: Stefan Haberland <sth(a)linux.ibm.com&gt; :::::: CC: Jens Axboe <axboe(a)kernel.dk&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org