[SCSI] lpfc 8.1.11 : Fix Memory leaks

Fix Memory leaks associated with mbox cmds READ_LA, READ_SPARAM, REG_LOGIN
Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/lpfc/lpfc_els.c

@@ -243,6 +243,7 @@ lpfc_cmpl_els_flogi_fabric(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
 		struct serv_parm *sp, IOCB_t *irsp)
 {
 	LPFC_MBOXQ_t *mbox;
+	struct lpfc_dmabuf *mp;
 	int rc;
 
 	spin_lock_irq(phba->host->host_lock);
@@ -307,10 +308,14 @@ lpfc_cmpl_els_flogi_fabric(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
 
 	rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT | MBX_STOP_IOCB);
 	if (rc == MBX_NOT_FINISHED)
-		goto fail_free_mbox;
+		goto fail_issue_reg_login;
 
 	return 0;
 
+ fail_issue_reg_login:
+	mp = (struct lpfc_dmabuf *) mbox->context1;
+	lpfc_mbuf_free(phba, mp->virt, mp->phys);
+	kfree(mp);
  fail_free_mbox:
 	mempool_free(mbox, phba->mbox_mem_pool);
  fail:
@@ -1857,6 +1862,7 @@ lpfc_cmpl_els_acc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
 	IOCB_t *irsp;
 	struct lpfc_nodelist *ndlp;
 	LPFC_MBOXQ_t *mbox = NULL;
+	struct lpfc_dmabuf *mp;
 
 	irsp = &rspiocb->iocb;
 
@@ -1868,6 +1874,11 @@ lpfc_cmpl_els_acc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
 	/* Check to see if link went down during discovery */
 	if ((lpfc_els_chk_latt(phba)) || !ndlp) {
 		if (mbox) {
+			mp = (struct lpfc_dmabuf *) mbox->context1;
+			if (mp) {
+				lpfc_mbuf_free(phba, mp->virt, mp->phys);
+				kfree(mp);
+			}
 			mempool_free( mbox, phba->mbox_mem_pool);
 		}
 		goto out;
@@ -1899,9 +1910,7 @@ lpfc_cmpl_els_acc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
 			}
 			/* NOTE: we should have messages for unsuccessful
 			   reglogin */
-			mempool_free( mbox, phba->mbox_mem_pool);
 		} else {
-			mempool_free( mbox, phba->mbox_mem_pool);
 			/* Do not call NO_LIST for lpfc_els_abort'ed ELS cmds */
 			if (!((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
 			      ((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) ||
@@ -1913,6 +1922,12 @@ lpfc_cmpl_els_acc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
 				}
 			}
 		}
+		mp = (struct lpfc_dmabuf *) mbox->context1;
+		if (mp) {
+			lpfc_mbuf_free(phba, mp->virt, mp->phys);
+			kfree(mp);
+		}
+		mempool_free(mbox, phba->mbox_mem_pool);
 	}
 out:
 	if (ndlp) {

drivers/scsi/lpfc/lpfc_hbadisc.c

@@ -715,6 +715,9 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
 {
 	int i;
 	LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox;
+	struct lpfc_dmabuf *mp;
+	int rc;
+
 	sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 	cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 
@@ -793,16 +796,27 @@ lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la)
 	if (sparam_mbox) {
 		lpfc_read_sparam(phba, sparam_mbox);
 		sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam;
-		lpfc_sli_issue_mbox(phba, sparam_mbox,
+		rc = lpfc_sli_issue_mbox(phba, sparam_mbox,
 						(MBX_NOWAIT | MBX_STOP_IOCB));
+		if (rc == MBX_NOT_FINISHED) {
+			mp = (struct lpfc_dmabuf *) sparam_mbox->context1;
+			lpfc_mbuf_free(phba, mp->virt, mp->phys);
+			kfree(mp);
+			mempool_free(sparam_mbox, phba->mbox_mem_pool);
+			if (cfglink_mbox)
+				mempool_free(cfglink_mbox, phba->mbox_mem_pool);
+			return;
+		}
 	}
 
 	if (cfglink_mbox) {
 		phba->hba_state = LPFC_LOCAL_CFG_LINK;
 		lpfc_config_link(phba, cfglink_mbox);
 		cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
-		lpfc_sli_issue_mbox(phba, cfglink_mbox,
+		rc = lpfc_sli_issue_mbox(phba, cfglink_mbox,
 						(MBX_NOWAIT | MBX_STOP_IOCB));
+		if (rc == MBX_NOT_FINISHED)
+			mempool_free(cfglink_mbox, phba->mbox_mem_pool);
 	}
 }
 

drivers/scsi/lpfc/lpfc_init.c

@@ -611,7 +611,7 @@ lpfc_handle_latt(struct lpfc_hba * phba)
 	pmb->mbox_cmpl = lpfc_mbx_cmpl_read_la;
 	rc = lpfc_sli_issue_mbox (phba, pmb, (MBX_NOWAIT | MBX_STOP_IOCB));
 	if (rc == MBX_NOT_FINISHED)
-		goto lpfc_handle_latt_free_mp;
+		goto lpfc_handle_latt_free_mbuf;
 
 	/* Clear Link Attention in HA REG */
 	spin_lock_irq(phba->host->host_lock);
@@ -621,6 +621,8 @@ lpfc_handle_latt(struct lpfc_hba * phba)
 
 	return;
 
+lpfc_handle_latt_free_mbuf:
+	lpfc_mbuf_free(phba, mp->virt, mp->phys);
 lpfc_handle_latt_free_mp:
 	kfree(mp);
 lpfc_handle_latt_free_pmb:

drivers/scsi/lpfc/lpfc_nportdisc.c

@@ -739,7 +739,7 @@ lpfc_cmpl_plogi_plogi_issue(struct lpfc_hba * phba,
 			    uint32_t evt)
 {
 	struct lpfc_iocbq *cmdiocb, *rspiocb;
-	struct lpfc_dmabuf *pcmd, *prsp;
+	struct lpfc_dmabuf *pcmd, *prsp, *mp;
 	uint32_t *lp;
 	IOCB_t *irsp;
 	struct serv_parm *sp;
@@ -829,6 +829,9 @@ lpfc_cmpl_plogi_plogi_issue(struct lpfc_hba * phba,
 				      NLP_REGLOGIN_LIST);
 			return ndlp->nlp_state;
 		}
+		mp = (struct lpfc_dmabuf *)mbox->context1;
+		lpfc_mbuf_free(phba, mp->virt, mp->phys);
+		kfree(mp);
 		mempool_free(mbox, phba->mbox_mem_pool);
 	} else {
 		mempool_free(mbox, phba->mbox_mem_pool);