On Sun, May 04, 2014 at 05:31:40AM +0200, Max Reitz wrote: > If the very first allocation has a length of 0, the free_cluster_index > is still 0 after the for loop, which means that subtracting one from it > will underflow and signal an invalid range of clusters by returning > -EFBIG. However, there is no such range, as its length is 0. > > Fix this by preventing underflows on free_cluster_index during the > check. > > Signed-off-by: Max Reitz <mre...@redhat.com> > --- > block/qcow2-refcount.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-)
Thanks, applied to my block tree: https://github.com/stefanha/qemu/commits/block Stefan
