scsi: lpfc: Add ndlp kref accounting for resume RPI path
The driver is crashing due to a bad pointer during driver load due in an
adisc acc receive routine. The driver is missing node get/put in the
mbx_resume_rpi paths.
Fix by adding the proper gets and puts into the resume_rpi path.
Link: https://lore.kernel.org/r/20210514195559.119853-5-jsmart2021@gmail.com
Co-developed-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index aefe16c..f68fe6f 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -2679,6 +2679,12 @@ lpfc_sli_def_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
}
}
+ /* This nlp_put pairs with lpfc_sli4_resume_rpi */
+ if (pmb->u.mb.mbxCommand == MBX_RESUME_RPI) {
+ ndlp = (struct lpfc_nodelist *)pmb->ctx_ndlp;
+ lpfc_nlp_put(ndlp);
+ }
+
/* Check security permission status on INIT_LINK mailbox command */
if ((pmb->u.mb.mbxCommand == MBX_INIT_LINK) &&
(pmb->u.mb.mbxStatus == MBXERR_SEC_NO_PERMISSION))
@@ -19037,14 +19043,28 @@ lpfc_sli4_resume_rpi(struct lpfc_nodelist *ndlp,
if (!mboxq)
return -ENOMEM;
+ /* If cmpl assigned, then this nlp_get pairs with
+ * lpfc_mbx_cmpl_resume_rpi.
+ *
+ * Else cmpl is NULL, then this nlp_get pairs with
+ * lpfc_sli_def_mbox_cmpl.
+ */
+ if (!lpfc_nlp_get(ndlp)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
+ "2122 %s: Failed to get nlp ref\n",
+ __func__);
+ mempool_free(mboxq, phba->mbox_mem_pool);
+ return -EIO;
+ }
+
/* Post all rpi memory regions to the port. */
lpfc_resume_rpi(mboxq, ndlp);
if (cmpl) {
mboxq->mbox_cmpl = cmpl;
mboxq->ctx_buf = arg;
- mboxq->ctx_ndlp = ndlp;
} else
mboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ mboxq->ctx_ndlp = ndlp;
mboxq->vport = ndlp->vport;
rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
@@ -19052,6 +19072,7 @@ lpfc_sli4_resume_rpi(struct lpfc_nodelist *ndlp,
"2010 Resume RPI Mailbox failed "
"status %d, mbxStatus x%x\n", rc,
bf_get(lpfc_mqe_status, &mboxq->u.mqe));
+ lpfc_nlp_put(ndlp);
mempool_free(mboxq, phba->mbox_mem_pool);
return -EIO;
}