Re: [Qemu-block] [PATCH v2 2/3] qcow2: Don't allow overflow during cluster allocation

2018-02-22 Thread Eric Blake
On 02/22/2018 04:29 AM, Alberto Garcia wrote: On Thu 22 Feb 2018 12:39:52 AM CET, Eric Blake wrote: free_in_cluster = s->cluster_size - offset_into_cluster(s, offset); do { if (!offset || free_in_cluster < size) { -int64_t new_cluster = alloc_clusters_noref(bs,

Re: [Qemu-block] [PATCH v2 2/3] qcow2: Don't allow overflow during cluster allocation

2018-02-22 Thread Alberto Garcia
On Thu 22 Feb 2018 12:39:52 AM CET, Eric Blake wrote: > free_in_cluster = s->cluster_size - offset_into_cluster(s, offset); > do { > if (!offset || free_in_cluster < size) { > -int64_t new_cluster = alloc_clusters_noref(bs, s->cluster_size); > +int64_t