Patch "scsi: qla2xxx: Fix smatch warning in qla25xx_delete_{rsp|req}_que" has been added to the 4.15-stable tree

Patch "scsi: qla2xxx: Fix smatch warning in qla25xx_delete_{rsp|req}_que" has been added to the 4.15-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    scsi: qla2xxx: Fix smatch warning in qla25xx_delete_{rsp|req}_que

to the 4.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     scsi-qla2xxx-fix-smatch-warning-in-qla25xx_delete_-rsp-req-_que.patch
and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 62aa281470fdb7c0796d63a1cc918a8c1f02dde2 Mon Sep 17 00:00:00 2001
From: Himanshu Madhani <himanshu.madhani@cavium.com>
Date: Sat, 16 Dec 2017 16:05:09 -0800
Subject: scsi: qla2xxx: Fix smatch warning in qla25xx_delete_{rsp|req}_que

From: Himanshu Madhani <himanshu.madhani@cavium.com>

commit 62aa281470fdb7c0796d63a1cc918a8c1f02dde2 upstream.

This patch fixes following warnings reported by smatch:

drivers/scsi/qla2xxx/qla_mid.c:586 qla25xx_delete_req_que()
error: we previously assumed 'req' could be null (see line 580)

drivers/scsi/qla2xxx/qla_mid.c:602 qla25xx_delete_rsp_que()
error: we previously assumed 'rsp' could be null (see line 596)

Fixes: 7867b98dceb7 ("scsi: qla2xxx: Fix memory leak in dual/target mode")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/scsi/qla2xxx/qla_mid.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/scsi/qla2xxx/qla_mid.c
+++ b/drivers/scsi/qla2xxx/qla_mid.c
@@ -582,8 +582,9 @@ qla25xx_delete_req_que(struct scsi_qla_h
 		ret = qla25xx_init_req_que(vha, req);
 		if (ret != QLA_SUCCESS)
 			return QLA_FUNCTION_FAILED;
+
+		qla25xx_free_req_que(vha, req);
 	}
-	qla25xx_free_req_que(vha, req);
 
 	return ret;
 }
@@ -598,8 +599,9 @@ qla25xx_delete_rsp_que(struct scsi_qla_h
 		ret = qla25xx_init_rsp_que(vha, rsp);
 		if (ret != QLA_SUCCESS)
 			return QLA_FUNCTION_FAILED;
+
+		qla25xx_free_rsp_que(vha, rsp);
 	}
-	qla25xx_free_rsp_que(vha, rsp);
 
 	return ret;
 }


Patches currently in stable-queue which might be from himanshu.madhani@cavium.com are

queue-4.15/scsi-qla2xxx-fix-smatch-warning-in-qla25xx_delete_-rsp-req-_que.patch
queue-4.15/scsi-qla2xxx-fix-crashes-in-qla2x00_probe_one-on-probe-failure.patch
queue-4.15/scsi-qla2xxx-fix-null-pointer-access-for-fcport-structure.patch