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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Fred Herard <fred.herard@oracle.com>,
        Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
        Lee Duncan <lduncan@suse.com>,
        "Martin K. Petersen" <martin.petersen@oracle.com>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.9 32/61] scsi: libiscsi: Fix NULL pointer dereference in iscsi_eh_session_reset
Date:   Thu, 20 Dec 2018 10:18:32 +0100
Message-Id: <20181220085845.016356265@linuxfoundation.org>
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4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

[ Upstream commit 5db6dd14b31397e8cccaaddab2ff44ebec1acf25 ]

This commit addresses NULL pointer dereference in iscsi_eh_session_reset.
Reference should not be made to session->leadconn when session->state is
set to ISCSI_STATE_TERMINATE.

Signed-off-by: Fred Herard <fred.herard@oracle.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/scsi/libiscsi.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index cc8f2a7c2463..c79743de48f9 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -2414,8 +2414,8 @@ int iscsi_eh_session_reset(struct scsi_cmnd *sc)
 failed:
 		ISCSI_DBG_EH(session,
 			     "failing session reset: Could not log back into "
-			     "%s, %s [age %d]\n", session->targetname,
-			     conn->persistent_address, session->age);
+			     "%s [age %d]\n", session->targetname,
+			     session->age);
 		spin_unlock_bh(&session->frwd_lock);
 		mutex_unlock(&session->eh_mutex);
 		return FAILED;
-- 
2.19.1