Index: /trunk/src/VBox/Runtime/r0drv/solaris/vbi/alloc-r0drv-solaris.c
===================================================================
--- /trunk/src/VBox/Runtime/r0drv/solaris/vbi/alloc-r0drv-solaris.c	(revision 26642)
+++ /trunk/src/VBox/Runtime/r0drv/solaris/vbi/alloc-r0drv-solaris.c	(revision 26643)
@@ -103,5 +103,8 @@
     virtAddr = vbi_contig_alloc(&phys, cb);
     if (virtAddr == NULL)
+    {
+        cmn_err("vbi_contig_alloc for %u failed\n", cb);
         return NULL;
+    }
 
     Assert(phys < (uint64_t)1 << 32);