nvme-tcp: fix a NULL deref when an admin connect times out
If we timeout the admin startup sequence we might not yet have an I/O tagset allocated which causes the teardown sequence to crash. Make nvme_tcp_teardown_io_queues safe by not iterating inflight tags if the tagset wasn't allocated. Fixes: 39d57757 ("nvme-tcp: fix timeout handler") Signed-off-by: NSagi Grimberg <sagi@grimberg.me> Signed-off-by: NChristoph Hellwig <hch@lst.de>
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