Patch "target: fix null pointer regression in core_tmr_drain_tmr_list" has been added to the 4.14-stable tree

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

target: fix null pointer regression in core_tmr_drain_tmr_list

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-null-pointer-regression-in-core_tmr_drain_tmr_list.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 <[email protected]> know about it.

From: tangwenji <[email protected]>
Date: Wed, 16 Aug 2017 16:39:00 +0800
Subject: target: fix null pointer regression in core_tmr_drain_tmr_list

From: tangwenji <[email protected]>

commit 88fb2fa7db7510bf1078226ab48d162d9854f3d4 upstream.

The target system kernel crash when the initiator executes the sg_persist -A command,because of the second argument to be set to NULL when core_tmr_lun_reset is called in core_scsi3_pro_preempt function.

This fixes a regression originally introduced by:

commit 51ec502a32665fed66c7f03799ede4023b212536
Author: Bart Van Assche <[email protected]>
Date: Tue Feb 14 16:25:54 2017 -0800

target: Delete tmr from list before processing

---
 drivers/target/target_core_tmr.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

@@ -217,7 +217,8 @@ static void core_tmr_drain_tmr_list(
 	 * LUN_RESET tmr..
 	 */
 	spin_lock_irqsave(&dev->se_tmr_lock, flags);
-	list_del_init(&tmr->tmr_list);
+	if (tmr)
+		list_del_init(&tmr->tmr_list);
 	list_for_each_entry_safe(tmr_p, tmr_pp, &dev->dev_tmr_list, tmr_list) {
 		cmd = tmr_p->task_cmd;
 		if (!cmd) {

Patches currently in stable-queue which might be from [email protected] 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