We actually want to print the used_length, against which we check.

Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Juan Quintela <quintela@redhat.com>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
 migration/multifd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/migration/multifd.c b/migration/multifd.c
index b3e8ae9bcc..dd9e88c5f1 100644
--- a/migration/multifd.c
+++ b/migration/multifd.c
@@ -222,7 +222,7 @@ static int multifd_recv_unfill_packet(MultiFDRecvParams *p, Error **errp)
         if (offset > (block->used_length - qemu_target_page_size())) {
             error_setg(errp, "multifd: offset too long %" PRIu64
                        " (max " RAM_ADDR_FMT ")",
-                       offset, block->max_length);
+                       offset, block->used_length);
             return -1;
         }
         p->pages->iov[i].iov_base = block->host + offset;
-- 
2.24.1