Re: [PATCH 3/8] qla2xxx: klocwork - Check for a valid fcport pointer

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On 5/18/23 00:58, Nilesh Javali wrote:
Klocwork reported warning of null pointer may be dereferenced.
The routine exits when sa_ctl is NULL and fcport is allocated after
the exit call thus causing NULL fcport pointer to dereference at the
time of exit.

Add a check for a valid fcport pointer at the time of exit.

Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Nilesh Javali <njavali@xxxxxxxxxxx>
---
  drivers/scsi/qla2xxx/qla_edif.c | 3 ++-
  1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/qla2xxx/qla_edif.c b/drivers/scsi/qla2xxx/qla_edif.c
index ec0e20255bd3..14e314c12dd6 100644
--- a/drivers/scsi/qla2xxx/qla_edif.c
+++ b/drivers/scsi/qla2xxx/qla_edif.c
@@ -2411,7 +2411,8 @@ qla24xx_issue_sa_replace_iocb(scsi_qla_host_t *vha, struct qla_work_evt *e)
  	kref_put(&sp->cmd_kref, qla2x00_sp_release);
  	fcport->flags &= ~FCF_ASYNC_SENT;
  done:
-	fcport->flags &= ~FCF_ASYNC_ACTIVE;
+	if (fcport)
+		fcport->flags &= ~FCF_ASYNC_ACTIVE;
  	return rval;
  }

Please change the "goto done" statements that occur before fcport is set into "return rval" instead of making the above change.

Bart.





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