It was observed on an ISP8324 16Gb HBA with fw=8.08.203 (d0d5) in a
PowerPC64 machine that pkt->entry_type was MBX_IOCB_TYPE/0x39 with an
sp->type SRB_SCSI_CMD which is invalid and should not be possible.
Reading the entry_type from the crash dump shows the expected value of
STATUS_TYPE/0x03 but the call trace shows that qla24xx_mbx_iocb_entry()
is used.
Add a check to verify for consistency and reset the HBA if an invalid
state is reached. Obviously, this is only a workaround until the real
problem is solved.
Signed-off-by: Daniel Wagner <dwagner@xxxxxxx>
---
drivers/scsi/qla2xxx/qla_isr.c | 29 +++++++++++++++++++++++++++--
1 file changed, 27 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index b0b6dd2b608d..f953564cbed8 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -3406,6 +3406,32 @@ void qla24xx_nvme_ls4_iocb(struct scsi_qla_host *vha,
sp->done(sp, comp_status);
}
+static void qla24xx_process_mbx_iocb_response(struct scsi_qla_host *vha,
+ struct rsp_que *rsp, struct sts_entry_24xx *pkt)
+{
+ struct qla_hw_data *ha = vha->hw;
+ srb_t *sp;
+ const char func[] = "MBX-IOCB2";
+
+ sp = qla2x00_get_sp_from_handle(vha, func, rsp->req, pkt);
+ if (!sp)
+ return;
+
+ if (sp->type == SRB_SCSI_CMD ||
+ sp->type == SRB_NVME_CMD ||
+ sp->type == SRB_TM_CMD) {
+ ql_log(ql_log_warn, vha, 0x509d,
+ "Inconsistent event entry type %d\n", sp->type);
+ if (IS_P3P_TYPE(ha))
+ set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
+ else
+ set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
+ return;
+ }
+
+ qla24xx_mbx_iocb_entry(vha, rsp->req, (struct mbx_24xx_entry *)pkt);
+}
+
/**
* qla24xx_process_response_queue() - Process response queue entries.
* @vha: SCSI driver HA context
@@ -3513,8 +3539,7 @@ void qla24xx_process_response_queue(struct scsi_qla_host *vha,
(struct abort_entry_24xx *)pkt);
break;
case MBX_IOCB_TYPE:
- qla24xx_mbx_iocb_entry(vha, rsp->req,
- (struct mbx_24xx_entry *)pkt);
+ qla24xx_process_mbx_iocb_response(vha, rsp, pkt);
break;
case VP_CTRL_IOCB_TYPE:
qla_ctrlvp_completed(vha, rsp->req,
--
2.16.4
