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-rw-r--r--block/qcow2-cluster.c2
-rw-r--r--block/qcow2-refcount.c2
-rw-r--r--block/qcow2.c3
3 files changed, 4 insertions, 3 deletions
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
index d349655d0c..057dac5738 100644
--- a/block/qcow2-cluster.c
+++ b/block/qcow2-cluster.c
@@ -47,7 +47,7 @@ int qcow2_grow_l1_table(BlockDriverState *bs, int min_size)
#endif
new_l1_size2 = sizeof(uint64_t) * new_l1_size;
- new_l1_table = qemu_mallocz(new_l1_size2);
+ new_l1_table = qemu_mallocz(align_offset(new_l1_size2, 512));
memcpy(new_l1_table, s->l1_table, s->l1_size * sizeof(uint64_t));
/* write new table (align to cluster) */
diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
index d42c6e6461..e6c857e084 100644
--- a/block/qcow2-refcount.c
+++ b/block/qcow2-refcount.c
@@ -513,7 +513,7 @@ int qcow2_update_snapshot_refcount(BlockDriverState *bs,
l1_size2 = l1_size * sizeof(uint64_t);
l1_allocated = 0;
if (l1_table_offset != s->l1_table_offset) {
- l1_table = qemu_malloc(l1_size2);
+ l1_table = qemu_mallocz(align_offset(l1_size2, 512));
l1_allocated = 1;
if (bdrv_pread(s->hd, l1_table_offset,
l1_table, l1_size2) != l1_size2)
diff --git a/block/qcow2.c b/block/qcow2.c
index 9a7c666ee7..be507e7a9c 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -200,7 +200,8 @@ static int qcow_open(BlockDriverState *bs, const char *filename, int flags)
if (s->l1_size < s->l1_vm_state_index)
goto fail;
s->l1_table_offset = header.l1_table_offset;
- s->l1_table = qemu_malloc(s->l1_size * sizeof(uint64_t));
+ s->l1_table = qemu_mallocz(
+ align_offset(s->l1_size * sizeof(uint64_t), 512));
if (bdrv_pread(s->hd, s->l1_table_offset, s->l1_table, s->l1_size * sizeof(uint64_t)) !=
s->l1_size * sizeof(uint64_t))
goto fail;