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-rw-r--r--block/qcow2.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/block/qcow2.c b/block/qcow2.c
index 8458d10c10..1b5b36cfc1 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -731,7 +731,7 @@ static coroutine_fn int qcow2_co_writev(BlockDriverState *bs,
assert(hd_qiov.size <=
QCOW_MAX_CRYPT_CLUSTERS * s->cluster_size);
- qemu_iovec_to_buffer(&hd_qiov, cluster_data);
+ qemu_iovec_to_buf(&hd_qiov, 0, cluster_data, hd_qiov.size);
qcow2_encrypt_sectors(s, sector_num, cluster_data,
cluster_data, cur_nr_sectors, 1, &s->aes_encrypt_key);