From 9cd53028103f562629bd12548b242353128b0283 Mon Sep 17 00:00:00 2001
From: Tomasz Kulasek <tomaszx.kulasek@intel.com>
Date: Tue, 5 Nov 2019 12:55:47 +0100
Subject: [PATCH] lib/nvme: fix do not use external_io_msg_qpair after free

Signed-off-by: Tomasz Kulasek <tomaszx.kulasek@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/473282 (master)

(cherry picked from commit 53184430a5c8485fd4ad6d7000801d8b45ac0b52)
Change-Id: I20ef8303c2fae6abf43d15ebb025ea368c0dfd67
Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/478585
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Alexey Marchuk <alexeymar@mellanox.com>
---
 lib/nvme/nvme_io_msg.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/nvme/nvme_io_msg.c b/lib/nvme/nvme_io_msg.c
index 80df14615a..c224da9797 100644
--- a/lib/nvme/nvme_io_msg.c
+++ b/lib/nvme/nvme_io_msg.c
@@ -166,6 +166,7 @@ nvme_io_msg_ctrlr_stop(struct spdk_nvme_ctrlr *ctrlr, struct nvme_io_msg_produce
 
 	if (ctrlr->external_io_msgs_qpair) {
 		spdk_nvme_ctrlr_free_io_qpair(ctrlr->external_io_msgs_qpair);
+		ctrlr->external_io_msgs_qpair = NULL;
 	}
 
 	pthread_mutex_destroy(&ctrlr->external_io_msgs_lock);