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authorJames Smart <jsmart2021@gmail.com>2022-06-03 20:43:24 +0300
committerMartin K. Petersen <martin.petersen@oracle.com>2022-06-08 04:38:17 +0300
commit6f808bd78e8296b4ded813b7182988d57e1f6176 (patch)
tree740cf302a6572bf88cc7da3f7a3d32a1be742835 /drivers/scsi/lpfc/lpfc_scsi.c
parente27f05147bff21408c1b8410ad8e90cd286e7952 (diff)
downloadlinux-6f808bd78e8296b4ded813b7182988d57e1f6176.tar.xz
scsi: lpfc: Address NULL pointer dereference after starget_to_rport()
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: 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> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_scsi.c')
-rw-r--r--drivers/scsi/lpfc/lpfc_scsi.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index d43968203248..ba5e4016262e 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -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,