tree: https://git.kernel.org/pub/scm/linux/kernel/git/tj/libata.git for-4.8 head: 811c969eb8588661e54b1ae665e236c365809ea9 commit: 811c969eb8588661e54b1ae665e236c365809ea9 [22/22] libata-scsi: reject WRITE SAME (16) with n_block that exceeds limit config: sparc64-allmodconfig (attached as .config) compiler: sparc64-linux-gnu-gcc (Debian 5.3.1-8) 5.3.1 20160205 reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 811c969eb8588661e54b1ae665e236c365809ea9 # save the attached .config to linux build tree make.cross ARCH=sparc64 Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings All warnings (new ones prefixed by >>): drivers/ata/libata-scsi.c: In function 'ata_scsi_write_same_xlat': >> drivers/ata/libata-scsi.c:3346:2: warning: 'fp' may be used uninitialized in this function [-Wmaybe-uninitialized] ata_scsi_set_invalid_field(dev, scmd, fp, bp); ^ vim +/fp +3346 drivers/ata/libata-scsi.c 18f0f978 Christoph Hellwig 2009-11-17 3330 tf->protocol = ATA_PROT_DMA; 18f0f978 Christoph Hellwig 2009-11-17 3331 tf->hob_feature = 0; 18f0f978 Christoph Hellwig 2009-11-17 3332 tf->feature = ATA_DSM_TRIM; 18f0f978 Christoph Hellwig 2009-11-17 3333 tf->hob_nsect = (size / 512) >> 8; 18f0f978 Christoph Hellwig 2009-11-17 3334 tf->nsect = size / 512; 18f0f978 Christoph Hellwig 2009-11-17 3335 tf->command = ATA_CMD_DSM; 87fb6c31 Marc Carino 2013-08-24 3336 } 87fb6c31 Marc Carino 2013-08-24 3337 18f0f978 Christoph Hellwig 2009-11-17 3338 tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48 | 18f0f978 Christoph Hellwig 2009-11-17 3339 ATA_TFLAG_WRITE; 18f0f978 Christoph Hellwig 2009-11-17 3340 18f0f978 Christoph Hellwig 2009-11-17 3341 ata_qc_set_pc_nbytes(qc); 18f0f978 Christoph Hellwig 2009-11-17 3342 18f0f978 Christoph Hellwig 2009-11-17 3343 return 0; 18f0f978 Christoph Hellwig 2009-11-17 3344 18f0f978 Christoph Hellwig 2009-11-17 3345 invalid_fld: 0df10b84 Hannes Reinecke 2016-04-04 @3346 ata_scsi_set_invalid_field(dev, scmd, fp, bp); bcfc867d Hannes Reinecke 2016-04-04 3347 return 1; bcfc867d Hannes Reinecke 2016-04-04 3348 invalid_param_len: bcfc867d Hannes Reinecke 2016-04-04 3349 /* "Parameter list length error" */ bcfc867d Hannes Reinecke 2016-04-04 3350 ata_scsi_set_sense(dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); bcfc867d Hannes Reinecke 2016-04-04 3351 return 1; bcfc867d Hannes Reinecke 2016-04-04 3352 invalid_opcode: bcfc867d Hannes Reinecke 2016-04-04 3353 /* "Invalid command operation code" */ bcfc867d Hannes Reinecke 2016-04-04 3354 ata_scsi_set_sense(dev, scmd, ILLEGAL_REQUEST, 0x20, 0x0); :::::: The code at line 3346 was first introduced by commit :::::: 0df10b84af88a482beea982f5f27a2e42157f600 libata-scsi: set bit pointer for sense code information :::::: TO: Hannes Reinecke <hare@xxxxxxx> :::::: CC: Tejun Heo <tj@xxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
Attachment:
.config.gz
Description: Binary data
