Fix crash after issuing lip reset
When RPI is not available, driver sends WQE with invalid RPI value and
rejected by HBA.
lpfc 0000:82:00.3: 1:3154 BLS ABORT RSP failed, data: x3/xa0320008
and
lpfc :2753 PLOGI failure DID:FFFFFA Status:x3/xa0240008
In this case, driver accesses rpi_ids array out of bounds.
Fix:
Check return value of lpfc_sli4_alloc_rpi(). Do not allocate
lpfc_nodelist entry if RPI is not available.
When RPI is not available, we will get discovery timeouts and
command drops for some of the vports as seen below.
lpfc :0273 Unexpected discovery timeout, vport State x0
lpfc :0230 Unexpected timeout, hba link state x5
lpfc :0111 Dropping received ELS cmd Data: x0 xc90c55 x0
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 3bd43f4..b1957f86 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -2874,34 +2874,38 @@ lpfc_sli4_node_prep(struct lpfc_hba *phba)
{
struct lpfc_nodelist *ndlp, *next_ndlp;
struct lpfc_vport **vports;
- int i;
+ int i, rpi;
+ unsigned long flags;
if (phba->sli_rev != LPFC_SLI_REV4)
return;
vports = lpfc_create_vport_work_array(phba);
- if (vports != NULL) {
- for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
- if (vports[i]->load_flag & FC_UNLOADING)
- continue;
+ if (vports == NULL)
+ return;
- list_for_each_entry_safe(ndlp, next_ndlp,
- &vports[i]->fc_nodes,
- nlp_listp) {
- if (NLP_CHK_NODE_ACT(ndlp)) {
- ndlp->nlp_rpi =
- lpfc_sli4_alloc_rpi(phba);
- lpfc_printf_vlog(ndlp->vport, KERN_INFO,
- LOG_NODE,
- "0009 rpi:%x DID:%x "
- "flg:%x map:%x %p\n",
- ndlp->nlp_rpi,
- ndlp->nlp_DID,
- ndlp->nlp_flag,
- ndlp->nlp_usg_map,
- ndlp);
- }
+ for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
+ if (vports[i]->load_flag & FC_UNLOADING)
+ continue;
+
+ list_for_each_entry_safe(ndlp, next_ndlp,
+ &vports[i]->fc_nodes,
+ nlp_listp) {
+ if (!NLP_CHK_NODE_ACT(ndlp))
+ continue;
+ rpi = lpfc_sli4_alloc_rpi(phba);
+ if (rpi == LPFC_RPI_ALLOC_ERROR) {
+ spin_lock_irqsave(&phba->ndlp_lock, flags);
+ NLP_CLR_NODE_ACT(ndlp);
+ spin_unlock_irqrestore(&phba->ndlp_lock, flags);
+ continue;
}
+ ndlp->nlp_rpi = rpi;
+ lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
+ "0009 rpi:%x DID:%x "
+ "flg:%x map:%x %p\n", ndlp->nlp_rpi,
+ ndlp->nlp_DID, ndlp->nlp_flag,
+ ndlp->nlp_usg_map, ndlp);
}
}
lpfc_destroy_vport_work_array(phba, vports);
@@ -4722,10 +4726,9 @@ lpfc_sli4_perform_vport_cvl(struct lpfc_vport *vport)
ndlp = lpfc_findnode_did(vport, Fabric_DID);
if (!ndlp) {
/* Cannot find existing Fabric ndlp, so allocate a new one */
- ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
+ ndlp = lpfc_nlp_init(vport, Fabric_DID);
if (!ndlp)
return 0;
- lpfc_nlp_init(vport, ndlp, Fabric_DID);
/* Set the node type */
ndlp->nlp_type |= NLP_FABRIC;
/* Put ndlp onto node list */