[ 796.503204] run blktests loop/005 at 2022-09-26 20:21:50 [ 796.516867] loop0: detected capacity change from 0 to 2048 [ 796.580914] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2