diff options
| -rw-r--r-- | block/qcow2-refcount.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c index 1c63ac2..6f13d47 100644 --- a/block/qcow2-refcount.c +++ b/block/qcow2-refcount.c @@ -368,6 +368,9 @@ static int alloc_refcount_block(BlockDriverState *bs, return new_block; } + /* The offset must fit in the offset field of the refcount table entry */ + assert((new_block & REFT_OFFSET_MASK) == new_block); + /* If we're allocating the block at offset 0 then something is wrong */ if (new_block == 0) { qcow2_signal_corruption(bs, true, -1, -1, "Preventing invalid " |