diff options
| -rw-r--r-- | block/qcow2.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/block/qcow2.c b/block/qcow2.c index f2731a7cb5..811b913233 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -3358,6 +3358,10 @@ qcow2_co_pwritev_compressed(BlockDriverState *bs, uint64_t offset, return bdrv_truncate(bs->file, cluster_offset, PREALLOC_MODE_OFF, NULL); } + if (offset_into_cluster(s, offset)) { + return -EINVAL; + } + buf = qemu_blockalign(bs, s->cluster_size); if (bytes != s->cluster_size) { if (bytes > s->cluster_size || |