diff --git a/qemu/exec.c b/qemu/exec.c
index 904fc806..47222d44 100644
--- a/qemu/exec.c
+++ b/qemu/exec.c
@@ -2244,6 +2244,8 @@ bool address_space_access_valid(AddressSpace *as, hwaddr addr, int len, bool is_
         if (!memory_access_is_direct(mr, is_write)) {
             l = memory_access_size(mr, l, addr);
             if (!memory_region_access_valid(mr, xlat, l, is_write)) {
+                // Unicorn: commented out
+                //rcu_read_unlock();
                 return false;
             }
         }