On Friday 29 August 2014 10:34:20, David Gwynne wrote: > are you expecting minphys to appear in that backtrace?
No. In that trace minphys should have limited the transfer size and I had put an KASSERT() into vioblk_scsi_cmd() which verified that xs- >datalen is not larger than that limit. A call to bread() causes the KASSERT to trigger.