[SCSI] lpfc 8.3.18: Fix critical errors

Fix critical errors

- Update send_scsi_event to validate pnode pointer active before copying
  the wwpn information.
- Add a message, mailbox_idle, and unlock before failing SECURITY_MGMT
  or AUTH_PORT mailbox commands
- Prevent spin_lock_irqsave from being called twice in a row.

Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index f681eea..c1cbec0 100644 (file)
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -3789,8 +3789,13 @@ sysfs_mbox_read(struct file *filp, struct kobject *kobj,
                        break;
                case MBX_SECURITY_MGMT:
                case MBX_AUTH_PORT:
-                       if (phba->pci_dev_grp == LPFC_PCI_DEV_OC)
+                       if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) {
+                               printk(KERN_WARNING "mbox_read:Command 0x%x "
+                                      "is not permitted\n", pmb->mbxCommand);
+                               sysfs_mbox_idle(phba);
+                               spin_unlock_irq(&phba->hbalock);
                                return -EPERM;
+                       }
                        break;
                case MBX_READ_SPARM64:
                case MBX_READ_LA:

diff --git a/drivers/scsi/lpfc/lpfc_bsg.c b/drivers/scsi/lpfc/lpfc_bsg.c
index f5d60b5..7260c3a 100644 (file)
--- a/drivers/scsi/lpfc/lpfc_bsg.c
+++ b/drivers/scsi/lpfc/lpfc_bsg.c
@@ -3142,12 +3142,12 @@ lpfc_bsg_menlo_cmd_cmp(struct lpfc_hba *phba,
        job = menlo->set_job;
        job->dd_data = NULL; /* so timeout handler does not reply */
 
-       spin_lock_irqsave(&phba->hbalock, flags);
+       spin_lock(&phba->hbalock);
        cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
        if (cmdiocbq->context2 && rspiocbq)
                memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
                       &rspiocbq->iocb, sizeof(IOCB_t));
-       spin_unlock_irqrestore(&phba->hbalock, flags);
+       spin_unlock(&phba->hbalock);
 
        bmp = menlo->bmp;
        rspiocbq = menlo->rspiocbq;

diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index 3a65895..f64b65a 100644 (file)
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -169,6 +169,7 @@ lpfc_update_stats(struct lpfc_hba *phba, struct  lpfc_scsi_buf *lpfc_cmd)
        spin_lock_irqsave(shost->host_lock, flags);
        if (!vport->stat_data_enabled ||
                vport->stat_data_blocked ||
+               !pnode ||
                !pnode->lat_data ||
                (phba->bucket_type == LPFC_NO_BUCKET)) {
                spin_unlock_irqrestore(shost->host_lock, flags);
@@ -2040,6 +2041,9 @@ lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport,
        struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode;
        unsigned long flags;
 
+       if (!pnode || !NLP_CHK_NODE_ACT(pnode))
+               return;
+
        /* If there is queuefull or busy condition send a scsi event */
        if ((cmnd->result == SAM_STAT_TASK_SET_FULL) ||
                (cmnd->result == SAM_STAT_BUSY)) {
@@ -3226,10 +3230,11 @@ lpfc_send_taskmgmt(struct lpfc_vport *vport, struct lpfc_rport_data *rdata,
        struct lpfc_scsi_buf *lpfc_cmd;
        struct lpfc_iocbq *iocbq;
        struct lpfc_iocbq *iocbqrsp;
+       struct lpfc_nodelist *pnode = rdata->pnode;
        int ret;
        int status;
 
-       if (!rdata->pnode || !NLP_CHK_NODE_ACT(rdata->pnode))
+       if (!pnode || !NLP_CHK_NODE_ACT(pnode))
                return FAILED;
 
        lpfc_cmd = lpfc_get_scsi_buf(phba);
@@ -3256,7 +3261,7 @@ lpfc_send_taskmgmt(struct lpfc_vport *vport, struct lpfc_rport_data *rdata,
                         "0702 Issue %s to TGT %d LUN %d "
                         "rpi x%x nlp_flag x%x\n",
                         lpfc_taskmgmt_name(task_mgmt_cmd), tgt_id, lun_id,
-                        rdata->pnode->nlp_rpi, rdata->pnode->nlp_flag);
+                        pnode->nlp_rpi, pnode->nlp_flag);
 
        status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING,
                                          iocbq, iocbqrsp, lpfc_cmd->timeout);