[PATCH 4/9] lpfc: Address null pointer dereference after starget_to_rport()

[James Smart <jsmart2021@gmail.com>]

Calls to starget_to_rport() may return null.  Add check for null rport
before dereference.

Fixes: bb21fc9911ee ("scsi: lpfc: Use fc_block_rport()")
Cc: <stable@vger.kernel.org> # v5.18
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>
---
 drivers/scsi/lpfc/lpfc_scsi.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index f5f4409e24cd..cb5e4e63ac44 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -6060,6 +6060,9 @@ lpfc_device_reset_handler(struct scsi_cmnd *cmnd)
 	int status;
 	u32 logit = LOG_FCP;
 
+	if (!rport)
+		return FAILED;
+
 	rdata = rport->dd_data;
 	if (!rdata || !rdata->pnode) {
 		lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
@@ -6138,6 +6141,9 @@ lpfc_target_reset_handler(struct scsi_cmnd *cmnd)
 	unsigned long flags;
 	DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq);
 
+	if (!rport)
+		return FAILED;
+
 	rdata = rport->dd_data;
 	if (!rdata || !rdata->pnode) {
 		lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
-- 
2.26.2