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-rw-r--r--block-qcow2.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/block-qcow2.c b/block-qcow2.c
index 0f7a06961e..273359c28e 100644
--- a/block-qcow2.c
+++ b/block-qcow2.c
@@ -1886,6 +1886,8 @@ static int grow_refcount_table(BlockDriverState *bs, int min_size)
int64_t table_offset;
uint64_t data64;
uint32_t data32;
+ int old_table_size;
+ int64_t old_table_offset;
if (min_size <= s->refcount_table_size)
return 0;
@@ -1931,11 +1933,14 @@ static int grow_refcount_table(BlockDriverState *bs, int min_size)
&data32, sizeof(data32)) != sizeof(data32))
goto fail;
qemu_free(s->refcount_table);
+ old_table_offset = s->refcount_table_offset;
+ old_table_size = s->refcount_table_size;
s->refcount_table = new_table;
s->refcount_table_size = new_table_size;
s->refcount_table_offset = table_offset;
update_refcount(bs, table_offset, new_table_size2, 1);
+ free_clusters(bs, old_table_offset, old_table_size * sizeof(uint64_t));
return 0;
fail:
free_clusters(bs, table_offset, new_table_size2);