diff options
Diffstat (limited to 'block/qcow2-refcount.c')
| -rw-r--r-- | block/qcow2-refcount.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c index b12299dd3b..2fdc26b612 100644 --- a/block/qcow2-refcount.c +++ b/block/qcow2-refcount.c @@ -435,6 +435,9 @@ int64_t qcow2_alloc_bytes(BlockDriverState *bs, int size) assert(size > 0 && size <= s->cluster_size); if (s->free_byte_offset == 0) { s->free_byte_offset = qcow2_alloc_clusters(bs, s->cluster_size); + if (s->free_byte_offset < 0) { + return s->free_byte_offset; + } } redo: free_in_cluster = s->cluster_size - @@ -450,6 +453,9 @@ int64_t qcow2_alloc_bytes(BlockDriverState *bs, int size) update_cluster_refcount(bs, offset >> s->cluster_bits, 1); } else { offset = qcow2_alloc_clusters(bs, s->cluster_size); + if (offset < 0) { + return offset; + } cluster_offset = s->free_byte_offset & ~(s->cluster_size - 1); if ((cluster_offset + s->cluster_size) == offset) { /* we are lucky: contiguous data */ |