Patch "target: fix buffer offset in core_scsi3_pri_read_full_status" has been added to the 4.14-stable tree

Patch "target: fix buffer offset in core_scsi3_pri_read_full_status" has been added to the 4.14-stable tree

[gregkh]

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

    target: fix buffer offset in core_scsi3_pri_read_full_status

to the 4.14-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:
     target-fix-buffer-offset-in-core_scsi3_pri_read_full_status.patch
and it can be found in the queue-4.14 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 c58a252beb04cf0e02d6a746b2ed7ea89b6deb71 Mon Sep 17 00:00:00 2001
From: tangwenji <tang.wenji@zte.com.cn>
Date: Thu, 17 Aug 2017 19:51:54 +0800
Subject: target: fix buffer offset in core_scsi3_pri_read_full_status

From: tangwenji <tang.wenji@zte.com.cn>

commit c58a252beb04cf0e02d6a746b2ed7ea89b6deb71 upstream.

When at least two initiators register pr on the same LUN,
the target returns the exception data due to buffer offset
error, therefore the initiator executes command 'sg_persist -s'
may cause the initiator to appear segfault error.

This fixes a regression originally introduced by:

  commit a85d667e58bddf73be84d1981b41eaac985ed216
  Author: Bart Van Assche <bart.vanassche@sandisk.com>
  Date:   Tue May 23 16:48:27 2017 -0700

      target: Use {get,put}_unaligned_be*() instead of open coding these functions

Signed-off-by: tangwenji <tang.wenji@zte.com.cn>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/target/target_core_pr.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/target/target_core_pr.c
+++ b/drivers/target/target_core_pr.c
@@ -4011,6 +4011,7 @@ core_scsi3_pri_read_full_status(struct s
 		 * Set the ADDITIONAL DESCRIPTOR LENGTH
 		 */
 		put_unaligned_be32(desc_len, &buf[off]);
+		off += 4;
 		/*
 		 * Size of full desctipor header minus TransportID
 		 * containing $FABRIC_MOD specific) initiator device/port


Patches currently in stable-queue which might be from tang.wenji@zte.com.cn are

queue-4.14/target-fix-null-pointer-regression-in-core_tmr_drain_tmr_list.patch
queue-4.14/target-fix-buffer-offset-in-core_scsi3_pri_read_full_status.patch