Hannes,

> During failover there is a small race window between
> fc_remote_port_add() and fc_timeout_deleted_rport(); the latter drops
> the lock after setting the port to NOTPRESENT, so if
> fc_remote_port_add() is called right at that time it will fail to
> detect the existing rport and happily adding a new structure, causing
> rports to get registered twice.

Applied to 4.14/scsi-fixes. Thanks!

-- 
Martin K. Petersen      Oracle Linux Engineering

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