linux-kernel - [PATCH AUTOSEL 4.14 12/89] scsi: qla2xxx: Fix unintended Logout

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Message-ID: <20180902064918.183387-12-alexander.levin@microsoft.com>
Date:   Sun, 2 Sep 2018 13:06:23 +0000
From:   Sasha Levin <Alexander.Levin@...rosoft.com>
To:     "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     Quinn Tran <quinn.tran@...ium.com>,
        Himanshu Madhani <himanshu.madhani@...ium.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        Sasha Levin <Alexander.Levin@...rosoft.com>
Subject: [PATCH AUTOSEL 4.14 12/89] scsi: qla2xxx: Fix unintended Logout

From: Quinn Tran <quinn.tran@...ium.com>

[ Upstream commit cb97f2c2e8d9f8c71ddbf04ad57e163ee6d86474 ]

During normal IO, FW can return IO with 'port unavailble' status.  Driver
would send a LOGO to remote port for session resync.  On an off chance, a
PLOGI could arrive before sending the LOGO.  This patch will skip sendiing
LOGO if a PLOGI just came in.

Signed-off-by: Quinn Tran <quinn.tran@...ium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@...ium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
---
 drivers/scsi/qla2xxx/qla_target.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index d6fe08de59a0..d9fcfdbe34e8 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -971,8 +971,9 @@ static void qlt_free_session_done(struct work_struct *work)
 
 			logo.id = sess->d_id;
 			logo.cmd_count = 0;
+			if (!own)
+				qlt_send_first_logo(vha, &logo);
 			sess->send_els_logo = 0;
-			qlt_send_first_logo(vha, &logo);
 		}
 
 		if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) {
-- 
2.17.1