From: Max Reitz <mre...@redhat.com>
If an error occurs in l2_allocate, the allocated (but unused) L2 cluster
should be freed.
Signed-off-by: Max Reitz <mre...@redhat.com>
Reviewed-by: Benoit Canet <ben...@irqsave.net>
Signed-off-by: Stefan Hajnoczi <stefa...@redhat.com>
---
block/qcow2-cluster.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
index 2ed45f0..0fd26bb 100644
--- a/block/qcow2-cluster.c
+++ b/block/qcow2-cluster.c
@@ -273,6 +273,10 @@ fail:
qcow2_cache_put(bs, s->l2_table_cache, (void**) table);
}
s->l1_table[l1_index] = old_l2_offset;
+ if (l2_offset > 0) {
+ qcow2_free_clusters(bs, l2_offset, s->l2_size * sizeof(uint64_t),
+ QCOW2_DISCARD_ALWAYS);
+ }
return ret;
}
--
1.8.3.1
