Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-10-24 14:10:59 +00:00
Code Issues Packages Projects Releases Wiki Activity

qla2xxx: Fix request queue corruption.

Browse Source 
When FW notify driver or driver detects low FW resource,
driver tries to send out Busy SCSI Status to tell Initiator
side to back off. During the send process, the lock was not held.

Cc: <stable@vger.kernel.org>
Signed-off-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Quinn Tran 2017-03-15 09:48:45 -07:00 committed by Nicholas Bellinger
parent ae940f2c47
commit 8b666809e1
1 changed files with 9 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/scsi/qla2xxx/qla_target.c
View File

@ -5079,16 +5079,22 @@ qlt_send_busy(struct scsi_qla_host *vha,
static int
qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha,
struct atio_from_isp *atio)
struct atio_from_isp *atio, bool ha_locked)
{
struct qla_hw_data *ha = vha->hw;
uint16_t status;
unsigned long flags;
if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha))
return 0;
if (!ha_locked)
spin_lock_irqsave(&ha->hardware_lock, flags);
status = temp_sam_status;
qlt_send_busy(vha, atio, status);
if (!ha_locked)
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return 1;
}
@ -5133,7 +5139,7 @@ static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha,
if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) {
rc = qlt_chk_qfull_thresh_hold(vha, atio);
rc = qlt_chk_qfull_thresh_hold(vha, atio, ha_locked);
if (rc != 0) {
tgt->atio_irq_cmd_count--;
return;
@ -5256,7 +5262,7 @@ static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
break;
}
rc = qlt_chk_qfull_thresh_hold(vha, atio);
rc = qlt_chk_qfull_thresh_hold(vha, atio, true);
if (rc != 0) {
tgt->irq_cmd_count--;
return;