[ 773.037822] run blktests loop/005 at 2022-09-29 19:45:40 [ 773.049898] loop0: detected capacity change from 0 to 2048 [ 773.178788] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2