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From:   Sasha Levin <Alexander.Levin@microsoft.com>
To:     "stable@vger.kernel.org" <stable@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
CC:     Bart Van Assche <bart.vanassche@wdc.com>,
        Mike Christie <mchristi@redhat.com>,
        Christoph Hellwig <hch@lst.de>,
        Hannes Reinecke <hare@suse.com>,
        "Martin K . Petersen" <martin.petersen@oracle.com>,
        Sasha Levin <Alexander.Levin@microsoft.com>
Subject: [PATCH AUTOSEL 4.18 047/136] scsi: target/iscsi: Make
 iscsit_ta_authentication() respect the output buffer size
Thread-Topic: [PATCH AUTOSEL 4.18 047/136] scsi: target/iscsi: Make
 iscsit_ta_authentication() respect the output buffer size
Thread-Index: AQHUTjKe5wnsFKQDjUWV9h+Odr7FxQ==
Date:   Mon, 17 Sep 2018 03:00:41 +0000
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From: Bart Van Assche <bart.vanassche@wdc.com>

[ Upstream commit 35bea5c84fd13c643cce63f0b5cd4b148f8c901d ]

Fixes: e48354ce078c ("iscsi-target: Add iSCSI fabric support for target v4.=
1")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Mike Christie <mchristi@redhat.com>
Cc: Mike Christie <mchristi@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 drivers/target/iscsi/iscsi_target_tpg.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/target/iscsi/iscsi_target_tpg.c b/drivers/target/iscsi=
/iscsi_target_tpg.c
index 4b34f71547c6..101d62105c93 100644
--- a/drivers/target/iscsi/iscsi_target_tpg.c
+++ b/drivers/target/iscsi/iscsi_target_tpg.c
@@ -636,8 +636,7 @@ int iscsit_ta_authentication(struct iscsi_portal_group =
*tpg, u32 authentication)
 		none =3D strstr(buf1, NONE);
 		if (none)
 			goto out;
-		strncat(buf1, ",", strlen(","));
-		strncat(buf1, NONE, strlen(NONE));
+		strlcat(buf1, "," NONE, sizeof(buf1));
 		if (iscsi_update_param_value(param, buf1) < 0)
 			return -EINVAL;
 	}
--=20
2.17.1