diff -r 86be56b9ba46 -r fc9ed50498fb hotspot/src/os/linux/vm/os_linux.cpp
--- a/hotspot/src/os/linux/vm/os_linux.cpp	Tue Dec 09 09:55:39 2008 -0500
+++ b/hotspot/src/os/linux/vm/os_linux.cpp	Wed Dec 10 15:14:29 2008 -0800
@@ -2500,7 +2500,7 @@
 }
 
 bool os::unguard_memory(char* addr, size_t size) {
-  return linux_mprotect(addr, size, PROT_READ|PROT_WRITE|PROT_EXEC);
+  return linux_mprotect(addr, size, PROT_READ|PROT_WRITE);
 }
 
 // Large page support