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-rw-r--r--block/qcow2-cluster.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
index 03a9f25799..5760ad6d26 100644
--- a/block/qcow2-cluster.c
+++ b/block/qcow2-cluster.c
@@ -285,6 +285,7 @@ static int l2_allocate(BlockDriverState *bs, int l1_index, uint64_t **table)
     return 0;
 
 fail:
+    s->l1_table[l1_index] = old_l2_offset;
     qcow2_l2_cache_reset(bs);
     return ret;
 }