tree: https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git devel head: 0894ff5eb82865f50565a1186db5970da0aa00dd commit: 5e6fa3cf7bef3bf4d3f0564c7c27022753a43bf2 [19/43] include condition in the BUG_ON/WARN_ON output config: parisc-randconfig-s031-20200714 (attached as .config) compiler: hppa-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: v0.6.2-41-g14e84ffc-dirty git checkout 5e6fa3cf7bef3bf4d3f0564c7c27022753a43bf2 # 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=parisc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) vim +1042 drivers/scsi/sd.c 5db44863b6ebbb4 Martin K. Petersen 2012-09-18 1021 5db44863b6ebbb4 Martin K. Petersen 2012-09-18 1022 /** 5db44863b6ebbb4 Martin K. Petersen 2012-09-18 1023 * sd_setup_write_same_cmnd - write the same data to multiple blocks 59b1134c5a2aab2 Christoph Hellwig 2014-06-28 1024 * @cmd: command to prepare 5db44863b6ebbb4 Martin K. Petersen 2012-09-18 1025 * 7529fbb0080d67b Damien Le Moal 2017-04-24 1026 * Will set up either WRITE SAME(10) or WRITE SAME(16) depending on 7529fbb0080d67b Damien Le Moal 2017-04-24 1027 * the preference indicated by the target device. 5db44863b6ebbb4 Martin K. Petersen 2012-09-18 1028 **/ 159b2cbf59f44f2 Christoph Hellwig 2018-11-09 1029 static blk_status_t sd_setup_write_same_cmnd(struct scsi_cmnd *cmd) 5db44863b6ebbb4 Martin K. Petersen 2012-09-18 1030 { 59b1134c5a2aab2 Christoph Hellwig 2014-06-28 1031 struct request *rq = cmd->request; 59b1134c5a2aab2 Christoph Hellwig 2014-06-28 1032 struct scsi_device *sdp = cmd->device; 5db44863b6ebbb4 Martin K. Petersen 2012-09-18 1033 struct scsi_disk *sdkp = scsi_disk(rq->rq_disk); 5db44863b6ebbb4 Martin K. Petersen 2012-09-18 1034 struct bio *bio = rq->bio; c6c93fdd3451cc0 Martin K. Petersen 2019-01-15 1035 u64 lba = sectors_to_logical(sdp, blk_rq_pos(rq)); c6c93fdd3451cc0 Martin K. Petersen 2019-01-15 1036 u32 nr_blocks = sectors_to_logical(sdp, blk_rq_sectors(rq)); 159b2cbf59f44f2 Christoph Hellwig 2018-11-09 1037 blk_status_t ret; 5db44863b6ebbb4 Martin K. Petersen 2012-09-18 1038 5db44863b6ebbb4 Martin K. Petersen 2012-09-18 1039 if (sdkp->device->no_write_same) 159b2cbf59f44f2 Christoph Hellwig 2018-11-09 1040 return BLK_STS_TARGET; 5db44863b6ebbb4 Martin K. Petersen 2012-09-18 1041 a4ad39b1d10584d Kent Overstreet 2013-08-07 @1042 BUG_ON(bio_offset(bio) || bio_iovec(bio).bv_len != sdp->sector_size); 5db44863b6ebbb4 Martin K. Petersen 2012-09-18 1043 5db44863b6ebbb4 Martin K. Petersen 2012-09-18 1044 rq->timeout = SD_WRITE_SAME_TIMEOUT; 5db44863b6ebbb4 Martin K. Petersen 2012-09-18 1045 c6c93fdd3451cc0 Martin K. Petersen 2019-01-15 1046 if (sdkp->ws16 || lba > 0xffffffff || nr_blocks > 0xffff) { 59b1134c5a2aab2 Christoph Hellwig 2014-06-28 1047 cmd->cmd_len = 16; 59b1134c5a2aab2 Christoph Hellwig 2014-06-28 1048 cmd->cmnd[0] = WRITE_SAME_16; c6c93fdd3451cc0 Martin K. Petersen 2019-01-15 1049 put_unaligned_be64(lba, &cmd->cmnd[2]); c6c93fdd3451cc0 Martin K. Petersen 2019-01-15 1050 put_unaligned_be32(nr_blocks, &cmd->cmnd[10]); 5db44863b6ebbb4 Martin K. Petersen 2012-09-18 1051 } else { 59b1134c5a2aab2 Christoph Hellwig 2014-06-28 1052 cmd->cmd_len = 10; 59b1134c5a2aab2 Christoph Hellwig 2014-06-28 1053 cmd->cmnd[0] = WRITE_SAME; c6c93fdd3451cc0 Martin K. Petersen 2019-01-15 1054 put_unaligned_be32(lba, &cmd->cmnd[2]); c6c93fdd3451cc0 Martin K. Petersen 2019-01-15 1055 put_unaligned_be16(nr_blocks, &cmd->cmnd[7]); 5db44863b6ebbb4 Martin K. Petersen 2012-09-18 1056 } 5db44863b6ebbb4 Martin K. Petersen 2012-09-18 1057 59b1134c5a2aab2 Christoph Hellwig 2014-06-28 1058 cmd->transfersize = sdp->sector_size; a25ee5485157403 Christoph Hellwig 2014-06-28 1059 cmd->allowed = SD_MAX_RETRIES; 08965c2eba135bd Bart Van Assche 2017-01-25 1060 08965c2eba135bd Bart Van Assche 2017-01-25 1061 /* 08965c2eba135bd Bart Van Assche 2017-01-25 1062 * For WRITE SAME the data transferred via the DATA OUT buffer is 08965c2eba135bd Bart Van Assche 2017-01-25 1063 * different from the amount of data actually written to the target. 08965c2eba135bd Bart Van Assche 2017-01-25 1064 * 08965c2eba135bd Bart Van Assche 2017-01-25 1065 * We set up __data_len to the amount of data transferred via the 08965c2eba135bd Bart Van Assche 2017-01-25 1066 * DATA OUT buffer so that blk_rq_map_sg sets up the proper S/G list 08965c2eba135bd Bart Van Assche 2017-01-25 1067 * to transfer a single sector of data first, but then reset it to 08965c2eba135bd Bart Van Assche 2017-01-25 1068 * the amount of data to be written right after so that the I/O path 08965c2eba135bd Bart Van Assche 2017-01-25 1069 * knows how much to actually write. 08965c2eba135bd Bart Van Assche 2017-01-25 1070 */ 08965c2eba135bd Bart Van Assche 2017-01-25 1071 rq->__data_len = sdp->sector_size; 08965c2eba135bd Bart Van Assche 2017-01-25 1072 ret = scsi_init_io(cmd); 84f7a9de0602704 Bart Van Assche 2019-01-15 1073 rq->__data_len = blk_rq_bytes(rq); 29f6ca6916e29fc Damien Le Moal 2017-05-08 1074 08965c2eba135bd Bart Van Assche 2017-01-25 1075 return ret; 5db44863b6ebbb4 Martin K. Petersen 2012-09-18 1076 } 5db44863b6ebbb4 Martin K. Petersen 2012-09-18 1077 :::::: The code at line 1042 was first introduced by commit :::::: a4ad39b1d10584dfcfcfb0d510faab2c7f034399 block: Convert bio_iovec() to bvec_iter :::::: TO: Kent Overstreet <kmo(a)daterainc.com&gt; :::::: CC: Kent Overstreet <kmo(a)daterainc.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org