On 30/04/2015 17:50, Paolo Bonzini wrote: > John, Fam, > > I got this report offlist. This happens if a bit in the hbitmap is > cleared and the HBitmap has _not_ yet reached the bit. See this comment > in include/qemu/hbitmap.h: > > * Resetting bits before the current > * position of the iterator is also okay. However, concurrent > * resetting of bits can lead to unexpected behavior if the iterator > * has not yet reached those bits. > > Can you please take a look?
Oh, it's related to discard. The reported pointed out later that he is using virtio-scsi and has discard=unmap enabled. Paolo
