Fix arm64 and x86 builds

Change-Id: Ic3746b2f200f42218b6ac857c1631e873c767c17
diff --git a/linker/linker.cpp b/linker/linker.cpp
index 32e3063..826aa5e 100644
--- a/linker/linker.cpp
+++ b/linker/linker.cpp
@@ -3715,7 +3715,7 @@
     return;
   }
 
-  soinfo* si = soinfo_alloc("[vdso]", nullptr, 0, 0);
+  soinfo* si = soinfo_alloc(&g_default_namespace, "[vdso]", nullptr, 0, 0);
 
   si->phdr = reinterpret_cast<ElfW(Phdr)*>(reinterpret_cast<char*>(ehdr_vdso) + ehdr_vdso->e_phoff);
   si->phnum = ehdr_vdso->e_phnum;