4.9-stable patches

[thirdparty/kernel/stable-queue.git] / releases / 4.9.68 / nvmet-cancel-fatal-error-and-flush-async-work-before-free-controller.patch

From foo@baz Wed Dec  6 17:39:55 CET 2017
From: Sagi Grimberg <sagi@grimberg.me>
Date: Sun, 1 Jan 2017 13:41:56 +0200
Subject: nvmet: cancel fatal error and flush async work before free controller

From: Sagi Grimberg <sagi@grimberg.me>


[ Upstream commit 06406d81a2d7cfb8abcc4fa6cdfeb8e5897007c5 ]

Make sure they are not running and we can free the controller
safely.

Signed-off-by: Roy Shterman <roys@lightbitslabs.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/nvme/target/core.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/nvme/target/core.c
+++ b/drivers/nvme/target/core.c
@@ -816,6 +816,9 @@ static void nvmet_ctrl_free(struct kref
 	list_del(&ctrl->subsys_entry);
 	mutex_unlock(&subsys->lock);
 
+	flush_work(&ctrl->async_event_work);
+	cancel_work_sync(&ctrl->fatal_err_work);
+
 	ida_simple_remove(&subsys->cntlid_ida, ctrl->cntlid);
 	nvmet_subsys_put(subsys);