diff options
| -rw-r--r-- | block/qcow2.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/block/qcow2.c b/block/qcow2.c index 5c92803fff..52731ab67b 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -677,10 +677,10 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags, } /* Check support for various header values */ - if (header.refcount_order != 4) { - report_unsupported(bs, errp, "%d bit reference counts", - 1 << header.refcount_order); - ret = -ENOTSUP; + if (header.refcount_order > 6) { + error_setg(errp, "Reference count entry width too large; may not " + "exceed 64 bits"); + ret = -EINVAL; goto fail; } s->refcount_order = header.refcount_order; |