From: James Smart <jsmart2021@gmail.com>
Date: Mon, 9 Apr 2018 14:24:31 -0700
Subject: scsi: lpfc: Fix NULL pointer reference when resetting adapter
Git-commit: 66a85155d4851fe10e7c08c386507d92b45c0ec1
Patch-mainline: v4.18-rc1
References: bsc#1088866
Points referencing local port structures didn't accommodate cases where
the localport may not be registered yet.
Add NULL pointer checks to logic.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Johannes Thumshirn <jthumshirn@suse.de>
---
drivers/scsi/lpfc/lpfc_nvme.c | 36 ++++++++++++++++++++----------------
1 file changed, 20 insertions(+), 16 deletions(-)
diff --git a/drivers/scsi/lpfc/lpfc_nvme.c b/drivers/scsi/lpfc/lpfc_nvme.c
index a0257478b63c..9e0345697e1b 100644
--- a/drivers/scsi/lpfc/lpfc_nvme.c
+++ b/drivers/scsi/lpfc/lpfc_nvme.c
@@ -364,16 +364,18 @@ lpfc_nvme_cmpl_gen_req(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
struct lpfc_dmabuf *buf_ptr;
struct lpfc_nodelist *ndlp;
- lport = (struct lpfc_nvme_lport *)vport->localport->private;
pnvme_lsreq = (struct nvmefc_ls_req *)cmdwqe->context2;
status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK;
- if (lport) {
- atomic_inc(&lport->fc4NvmeLsCmpls);
- if (status) {
- if (bf_get(lpfc_wcqe_c_xb, wcqe))
- atomic_inc(&lport->cmpl_ls_xb);
- atomic_inc(&lport->cmpl_ls_err);
+ if (vport->localport) {
+ lport = (struct lpfc_nvme_lport *)vport->localport->private;
+ if (lport) {
+ atomic_inc(&lport->fc4NvmeLsCmpls);
+ if (status) {
+ if (bf_get(lpfc_wcqe_c_xb, wcqe))
+ atomic_inc(&lport->cmpl_ls_xb);
+ atomic_inc(&lport->cmpl_ls_err);
+ }
}
}
@@ -980,15 +982,17 @@ lpfc_nvme_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
rport = lpfc_ncmd->nrport;
status = bf_get(lpfc_wcqe_c_status, wcqe);
- lport = (struct lpfc_nvme_lport *)vport->localport->private;
- if (lport) {
- idx = lpfc_ncmd->cur_iocbq.hba_wqidx;
- cstat = &lport->cstat[idx];
- atomic_inc(&cstat->fc4NvmeIoCmpls);
- if (status) {
- if (bf_get(lpfc_wcqe_c_xb, wcqe))
- atomic_inc(&lport->cmpl_fcp_xb);
- atomic_inc(&lport->cmpl_fcp_err);
+ if (vport->localport) {
+ lport = (struct lpfc_nvme_lport *)vport->localport->private;
+ if (lport) {
+ idx = lpfc_ncmd->cur_iocbq.hba_wqidx;
+ cstat = &lport->cstat[idx];
+ atomic_inc(&cstat->fc4NvmeIoCmpls);
+ if (status) {
+ if (bf_get(lpfc_wcqe_c_xb, wcqe))
+ atomic_inc(&lport->cmpl_fcp_xb);
+ atomic_inc(&lport->cmpl_fcp_err);
+ }
}
}