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scsi: lpfc: Address NULL pointer dereference after starget_to_rport()

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

Link: https://lore.kernel.org/r/20220603174329.63777-5-jsmart2021@gmail.com
Fixes: bb21fc9911 ("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>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart 2022-06-03 10:43:24 -07:00 committed by Martin K. Petersen
parent e27f05147b
commit 6f808bd78e
1 changed files with 6 additions and 0 deletions
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6
drivers/scsi/lpfc/lpfc_scsi.c
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@ -6062,6 +6062,9 @@ 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,
@ -6140,6 +6143,9 @@ 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,