[PATCH] scsi: ibmvscsis: Fix a stringop-overflow warning

From: Laura Abbott
Date: Mon Sep 10 2018 - 18:37:38 EST


There's currently a warning about string overflow with strncat:

drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c: In function 'ibmvscsis_probe':
drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c:3479:2: error: 'strncat' specified
bound 64 equals destination size [-Werror=stringop-overflow=]
strncat(vscsi->eye, vdev->name, MAX_EYE);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Switch to using strlcat which correctly accounts for lengths that
are equal to the destination buffer.

Signed-off-by: Laura Abbott <labbott@xxxxxxxxxx>
---
drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
index fac377320158..53d344d8dc43 100644
--- a/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
+++ b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
@@ -3475,7 +3475,7 @@ static int ibmvscsis_probe(struct vio_dev *vdev,
vscsi->dds.window[REMOTE].liobn);

strcpy(vscsi->eye, "VSCSI ");
- strncat(vscsi->eye, vdev->name, MAX_EYE);
+ strlcat(vscsi->eye, vdev->name, MAX_EYE);

vscsi->dds.unit_id = vdev->unit_address;
strncpy(vscsi->dds.partition_name, partition_name,
--
2.17.1