Commit c86fbe48 authored by Balsundar P's avatar Balsundar P Committed by Martin K. Petersen
Browse files

scsi: aacraid: fix illegal IO beyond last LBA 

The driver fails to handle data when read or written beyond device reported
LBA, which triggers kernel panic

Link: https://lore.kernel.org/r/1571120524-6037-2-git-send-email-balsundar.p@microsemi.com


Signed-off-by: default avatarBalsundar P <balsundar.p@microsemi.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 8cfb8e40

drivers/scsi/aacraid/aachba.c

+4 −4
Original line number Diff line number Diff line
@@ -2467,13 +2467,13 @@ static int aac_read(struct scsi_cmnd * scsicmd) 
		scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 |

			SAM_STAT_CHECK_CONDITION;

		set_sense(&dev->fsa_dev[cid].sense_data,

			  HARDWARE_ERROR, SENCODE_INTERNAL_TARGET_FAILURE,

			  ILLEGAL_REQUEST, SENCODE_LBA_OUT_OF_RANGE,

			  ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0);

		memcpy(scsicmd->sense_buffer, &dev->fsa_dev[cid].sense_data,

		       min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),

			     SCSI_SENSE_BUFFERSIZE));

		scsicmd->scsi_done(scsicmd);

		return 1;

		return 0;

	}



	dprintk((KERN_DEBUG "aac_read[cpu %d]: lba = %llu, t = %ld.\n",
@@ -2559,13 +2559,13 @@ static int aac_write(struct scsi_cmnd * scsicmd) 
		scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 |

			SAM_STAT_CHECK_CONDITION;

		set_sense(&dev->fsa_dev[cid].sense_data,

			  HARDWARE_ERROR, SENCODE_INTERNAL_TARGET_FAILURE,

			  ILLEGAL_REQUEST, SENCODE_LBA_OUT_OF_RANGE,

			  ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0);

		memcpy(scsicmd->sense_buffer, &dev->fsa_dev[cid].sense_data,

		       min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),

			     SCSI_SENSE_BUFFERSIZE));

		scsicmd->scsi_done(scsicmd);

		return 1;

		return 0;

	}



	dprintk((KERN_DEBUG "aac_write[cpu %d]: lba = %llu, t = %ld.\n",

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