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scsi: lpfc: Add ndlp kref accounting for resume RPI path

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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>
This commit is contained in:
James Smart 2021-05-14 12:55:52 -07:00 committed by Martin K. Petersen
parent e30d55137e
commit 1037e4b4f8
2 changed files with 26 additions and 1 deletions
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4
drivers/scsi/lpfc/lpfc_nportdisc.c
View File

@ -662,6 +662,10 @@ lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
ndlp, NULL);
}
/* This nlp_put pairs with lpfc_sli4_resume_rpi */
lpfc_nlp_put(ndlp);
kfree(elsiocb);
mempool_free(mboxq, phba->mbox_mem_pool);
}

23
drivers/scsi/lpfc/lpfc_sli.c
View File

@ -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;
}