From: David Milburn <dmilburn@redhat.com>
Date: Wed, 2 Sep 2020 22:42:54 +0000 (-0500)
Subject: nvme-fc: cancel async events before freeing event struct
X-Git-Tag: v5.4.67~54
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=103e82d5e82b6c4e21163d9ddbb30a76595ffe40;p=users%2Fdwmw2%2Flinux.git

nvme-fc: cancel async events before freeing event struct

[ Upstream commit e126e8210e950bb83414c4f57b3120ddb8450742 ]

Cancel async event work in case async event has been queued up, and
nvme_fc_submit_async_event() runs after event has been freed.

Signed-off-by: David Milburn <dmilburn@redhat.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
index dce4d6782ceb1..dae050d1f814d 100644
--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -1820,6 +1820,7 @@ nvme_fc_term_aen_ops(struct nvme_fc_ctrl *ctrl)
 	struct nvme_fc_fcp_op *aen_op;
 	int i;
 
+	cancel_work_sync(&ctrl->ctrl.async_event_work);
 	aen_op = ctrl->aen_ops;
 	for (i = 0; i < NVME_NR_AEN_COMMANDS; i++, aen_op++) {
 		if (!aen_op->fcp_req.private)