diff --git a/src/afs/LINUX/osi_module.c b/src/afs/LINUX/osi_module.c
index 353a3173de..cb6895787d 100644
--- a/src/afs/LINUX/osi_module.c
+++ b/src/afs/LINUX/osi_module.c
@@ -249,7 +249,7 @@ init_module(void)
 #else
 #if defined(AFS_AMD64_LINUX20_ENV)
     ptr = (unsigned long *)&init_mm;
-    datalen = 0x180000 / sizeof(ptr);
+    datalen = 0x360000 / sizeof(ptr);
 #else
     ptr = (unsigned long *)&init_mm;
     datalen = 16384;