Comment # 8 on bug 1192115 from Lin Ma

A potential race condition in qemu causes this issue���������
The part of queue element transfer descriptor migh be overwritten by a late DMA
in qemu's ehci emulation, which causes cpage is out of range.

The fix was posted to corresponding virt devel qemu project, It'll
automatically sync to leap 15.3 and 15.4.

Close this issue as fixed.