From: James Smart <jsmart2021@gmail.com>
Date: Tue, 19 Sep 2017 16:33:56 -0700
Subject: nvmet-fc: ensure target queue id within range.
Patch-mainline: v4.14-rc3
Git-commit: 0c319d3a144d4b8f1ea2047fd614d2149b68f889
References: FATE#323952, FATE#322506

When searching for queue id's ensure they are within the expected range.

Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Johannes Thumshirn <jthumshirn@suse.de>
---
 drivers/nvme/target/fc.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/nvme/target/fc.c
+++ b/drivers/nvme/target/fc.c
@@ -783,6 +783,9 @@ nvmet_fc_find_target_queue(struct nvmet_
 	u16 qid = nvmet_fc_getqueueid(connection_id);
 	unsigned long flags;
 
+	if (qid > NVMET_NR_QUEUES)
+		return NULL;
+
 	spin_lock_irqsave(&tgtport->lock, flags);
 	list_for_each_entry(assoc, &tgtport->assoc_list, a_list) {
 		if (association_id == assoc->association_id) {