From: Himanshu Madhani <himanshu.madhani@cavium.com>
To: target-devel@vger.kernel.org, Bart.VanAssche@sandisk.com,
nab@linux-iscsi.org
Cc: giridhar.malavali@cavium.com, linux-scsi@vger.kernel.org,
himanshu.madhani@cavium.com
Subject: [PATCH v4 03/14] qla2xxx: Fix request queue corruption.
Date: Wed, 15 Mar 2017 09:48:45 -0700 [thread overview]
Message-ID: <20170315164856.17255-4-himanshu.madhani@cavium.com> (raw)
In-Reply-To: <20170315164856.17255-1-himanshu.madhani@cavium.com>
From: Quinn Tran <quinn.tran@cavium.com>
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>
---
drivers/scsi/qla2xxx/qla_target.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index ecf97c5993e8..a463bcc57902 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -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;
--
2.12.0
next prev parent reply other threads:[~2017-03-15 16:49 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-15 16:48 [PATCH v4 00/14] qla2xxx: Bug Fixes and updates for target Himanshu Madhani
2017-03-15 16:48 ` [PATCH v4 01/14] qla2xxx: Allow vref count to timeout on vport delete Himanshu Madhani
2017-03-15 16:48 ` [PATCH v4 02/14] qla2xxx: Fix memory leak for abts processing Himanshu Madhani
2017-03-15 16:48 ` Himanshu Madhani [this message]
2017-03-15 16:48 ` [PATCH v4 04/14] qla2xxx: Fix inadequate lock protection for ABTS Himanshu Madhani
2017-03-15 16:48 ` [PATCH v4 05/14] qla2xxx: Fix sess_lock & hardware_lock lock order problem Himanshu Madhani
2017-03-15 16:48 ` [PATCH v4 06/14] qla2xxx: Allow relogin to proceed if remote login did not finish Himanshu Madhani
2017-03-15 16:48 ` [PATCH v4 07/14] qla2xxx: Improve T10-DIF/PI handling in driver Himanshu Madhani
2017-03-15 16:48 ` [PATCH v4 08/14] qla2xxx: Export DIF stats via debugfs Himanshu Madhani
2017-03-15 16:48 ` [PATCH v4 09/14] qla2xxx: Add async new target notification Himanshu Madhani
2017-03-15 16:48 ` [PATCH v4 10/14] qla2xxx: Use IOCB interface to submit non-critical MBX Himanshu Madhani
2017-03-15 16:48 ` [PATCH v4 11/14] qla2xxx: Add DebugFS node to display Port Database Himanshu Madhani
2017-03-15 16:48 ` [PATCH v4 12/14] qla2xxx: Change scsi host lookup method Himanshu Madhani
2017-03-15 16:48 ` [PATCH v4 13/14] qla2xxx: Fix delayed response to command for loop mode/direct connect Himanshu Madhani
2017-03-15 16:48 ` [PATCH v4 14/14] qla2xxx: Update driver version to 9.00.00.00-k Himanshu Madhani
2017-03-19 0:32 ` [PATCH v4 00/14] qla2xxx: Bug Fixes and updates for target Nicholas A. Bellinger
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