On 06/15/2016 09:36 AM, Max Reitz wrote: > We refuse to open images whose L1 table we deem "too big". Consequently, > we should not produce such images ourselves. > > Cc: qemu-sta...@nongnu.org > Signed-off-by: Max Reitz <mre...@redhat.com> > --- > block/qcow2-cluster.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-)
Reviewed-by: Eric Blake <ebl...@redhat.com>
>
> diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
> index 893ddf6..335b9b0 100644
> --- a/block/qcow2-cluster.c
> +++ b/block/qcow2-cluster.c
> @@ -65,7 +65,7 @@ int qcow2_grow_l1_table(BlockDriverState *bs, uint64_t
> min_size,
> }
> }
>
> - if (new_l1_size > INT_MAX / sizeof(uint64_t)) {
> + if (new_l1_size > QCOW_MAX_L1_SIZE / sizeof(uint64_t)) {
> return -EFBIG;
> }
>
>
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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