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scsi: qla2xxx: Handle incorrect entry_type entries

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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.

Link: https://lore.kernel.org/r/20200908081516.8561-5-dwagner@suse.de
Reviewed-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Daniel Wagner 2020-09-08 10:15:16 +02:00 committed by Martin K. Petersen
parent 7d88d5dff9
commit 31a3271ff1
1 changed files with 27 additions and 2 deletions
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29
drivers/scsi/qla2xxx/qla_isr.c
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@ -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;
static 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 @@ process_err:
(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,