2013/4/25 Martin K. Petersen <martin.petersen@xxxxxxxxxx>: >>>>>> "Akinobu" == Akinobu Mita <akinobu.mita@xxxxxxxxx> writes: > > Akinobu> The protection info dif_storep is allocated only when parameter > Akinobu> dif is not zero. But it will be accessed when reading or > Akinobu> writing to the storage installed with parameter dix is not > Akinobu> zero. > > Akinobu> So kernel crashes if scsi_debug module is loaded with > Akinobu> parameters dix=1 and dif=0. > > The full story is that scsi_debug does not support DIF and DIX correctly > by virtue of simultaneously being the HBA and the target. And since > there is no actual data transfer between the HBA and the target the > notion of DIF is weak at best. > > I did look into making scsi_debug do the right thing but it's quite a > bit of code and I lost interest about halfway through the effort. If > you'd like to fix this properly I can probably find the patch to use as > baseline? I'm interested in the patch. So could you provide it? -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
