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nvme-tcp: cancel async events before freeing event struct 

[ Upstream commit ceb1e0874d ]

Cancel async event work in case async event has been queued up, and
nvme_tcp_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>
5.4-rM2-2.2.x-imx-squashed
David Milburn 2020-09-02 17:42:53 -05:00 committed by Greg Kroah-Hartman
parent 89669cae6d
commit 373312e851
1 changed files with 1 additions and 0 deletions
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drivers/nvme/host/tcp.c
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@ -1507,6 +1507,7 @@ static struct blk_mq_tag_set *nvme_tcp_alloc_tagset(struct nvme_ctrl *nctrl,
static void nvme_tcp_free_admin_queue(struct nvme_ctrl *ctrl)
{
if (to_tcp_ctrl(ctrl)->async_req.pdu) {
cancel_work_sync(&ctrl->async_event_work);
nvme_tcp_free_async_req(to_tcp_ctrl(ctrl));
to_tcp_ctrl(ctrl)->async_req.pdu = NULL;
}