Commit 8084fe16 authored by Shyam Sundar's avatar Shyam Sundar Committed by James Bottomley

[SCSI] qla2xxx: Validate mid-layer 'underflow' during check-condition handling.

Signed-off-by: default avatarAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@SteelEye.com>
parent 5881569b
...@@ -1062,6 +1062,25 @@ qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt) ...@@ -1062,6 +1062,25 @@ qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt)
cp->device->id, cp->device->lun, cp, cp->device->id, cp->device->lun, cp,
cp->serial_number)); cp->serial_number));
/*
* In case of a Underrun condition, set both the lscsi
* status and the completion status to appropriate
* values.
*/
if (resid &&
((unsigned)(cp->request_bufflen - resid) <
cp->underflow)) {
DEBUG2(qla_printk(KERN_INFO, ha,
"scsi(%ld:%d:%d:%d): Mid-layer underflow "
"detected (%x of %x bytes)...returning "
"error status.\n", ha->host_no,
cp->device->channel, cp->device->id,
cp->device->lun, resid,
cp->request_bufflen));
cp->result = DID_ERROR << 16 | lscsi_status;
}
if (sense_len) if (sense_len)
DEBUG5(qla2x00_dump_buffer(cp->sense_buffer, DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
CMD_ACTUAL_SNSLEN(cp))); CMD_ACTUAL_SNSLEN(cp)));
......
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