Mercurial > hg > graal-jvmci-8
view test/runtime/7107135/Test.java @ 8710:9058789475af
7107135: Stack guard pages are no more protected after loading a shared library with executable stack
Summary: Detect the execstack attribute of the loaded library and attempt to fix the stack guard using Safepoint op.
Reviewed-by: dholmes, zgu
Contributed-by: ioi.lam@oracle.com
author | iklam |
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date | Tue, 05 Mar 2013 13:55:56 -0800 |
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/* * Copyright (c) 2002-2013, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2011 SAP AG. All Rights Reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ class Test { static boolean loadLib(String libName){ try { System.loadLibrary(libName); System.out.println("Loaded library "+ libName + "."); return true; } catch (SecurityException e) { System.out.println("loadLibrary(\"" + libName + "\") throws: " + e + "\n"); } catch (UnsatisfiedLinkError e) { System.out.println("loadLibrary(\"" + libName + "\") throws: " + e + "\n"); } return false; } public static int counter = 1; static int Runner() { counter = counter * -1; int i = counter; if(counter < 2) counter += Runner(); return i; } public static int run() { try{ Runner(); } catch (StackOverflowError e) { System.out.println("Caught stack overflow error."); return 0; } catch (OutOfMemoryError e) { return 0; } return 2; } public static void main(String argv[]) { loadLib(argv[0]); System.exit(run()); } }