undefect. CWE-407 — 63 sites patched across 27 ecosystems
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
This commit is contained in:
commit
0a580b313d
70422 changed files with 17213626 additions and 0 deletions
183
test/jdk/tools/launcher/TooSmallStackSize.java
Normal file
183
test/jdk/tools/launcher/TooSmallStackSize.java
Normal file
|
|
@ -0,0 +1,183 @@
|
|||
/*
|
||||
* Copyright (c) 2014, 2025, Oracle and/or its affiliates. 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.
|
||||
*/
|
||||
|
||||
/*
|
||||
* @test
|
||||
* @bug 6762191 8222334
|
||||
* @summary Setting stack size to 16K causes segmentation fault
|
||||
* @compile TooSmallStackSize.java
|
||||
* @comment VM fails to launch with minimum allowed stack size of 136k when asan is enabled
|
||||
* @requires !vm.asan
|
||||
* @run main TooSmallStackSize
|
||||
*/
|
||||
|
||||
/*
|
||||
* The primary purpose of this test is to make sure we can run with a 16k stack
|
||||
* size without crashing. Also this test will determine the minimum allowed
|
||||
* stack size for the platform (as provided by the JVM error message when a very
|
||||
* small stack is used), and then verify that the JVM can be launched with that stack
|
||||
* size without a crash or any error messages.
|
||||
*
|
||||
* Note: The '-Xss<size>' and '-XX:ThreadStackSize=<k-bytes>' options
|
||||
* both control Java thread stack size. This repo's version of the test
|
||||
* exercises the '-Xss' option. The hotspot repo's version of the test
|
||||
* exercises the '-XX:ThreadStackSize' VM option.
|
||||
*/
|
||||
|
||||
public class TooSmallStackSize extends TestHelper {
|
||||
/* for debugging. Normally false. */
|
||||
static final boolean verbose = false;
|
||||
|
||||
static void printTestOutput(TestResult tr) {
|
||||
System.out.println("*** exitValue = " + tr.exitValue);
|
||||
for (String x : tr.testOutput) {
|
||||
System.out.println(x);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Returns the minimum stack size this platform will allowed based on the
|
||||
* contents of the error message the JVM outputs when too small of a
|
||||
* -Xss size was used.
|
||||
*
|
||||
* The TestResult argument must contain the result of having already run
|
||||
* the JVM with too small of a stack size.
|
||||
*/
|
||||
static String getMinStackAllowed(TestResult tr) {
|
||||
/*
|
||||
* The JVM output will contain in one of the lines:
|
||||
* "The Java thread stack size specified is too small. Specify at least 100k"
|
||||
* Although the actual size will vary. We need to extract this size
|
||||
* string from the output and return it.
|
||||
*/
|
||||
String matchStr = "Specify at least ";
|
||||
for (String x : tr.testOutput) {
|
||||
int match_idx = x.indexOf(matchStr);
|
||||
if (match_idx >= 0) {
|
||||
int size_start_idx = match_idx + matchStr.length();
|
||||
int k_start_idx = x.indexOf("k", size_start_idx);
|
||||
return x.substring(size_start_idx, k_start_idx + 1); // include the "k"
|
||||
}
|
||||
}
|
||||
|
||||
System.out.println("Expect='" + matchStr + "'");
|
||||
System.out.println("Actual:");
|
||||
printTestOutput(tr);
|
||||
System.out.println("FAILED: Could not get the stack size from the output");
|
||||
throw new RuntimeException("test fails");
|
||||
}
|
||||
|
||||
/*
|
||||
* Run the JVM with the specified stack size.
|
||||
*
|
||||
* Returns the minimum allowed stack size gleaned from the error message,
|
||||
* if there is an error message. Otherwise returns the stack size passed in.
|
||||
*/
|
||||
static String checkStack(String stackSize) {
|
||||
String min_stack_allowed;
|
||||
|
||||
if (verbose)
|
||||
System.out.println("*** Testing " + stackSize);
|
||||
TestResult tr = doExec(javaCmd, "-Xss" + stackSize, "-version");
|
||||
if (verbose)
|
||||
printTestOutput(tr);
|
||||
|
||||
if (tr.isOK()) {
|
||||
System.out.println("PASSED: got no error message with stack size of " + stackSize);
|
||||
min_stack_allowed = stackSize;
|
||||
} else {
|
||||
String matchStr = "The Java thread stack size specified is too small";
|
||||
if (tr.contains(matchStr)) {
|
||||
System.out.println("PASSED: got expected error message with stack size of " + stackSize);
|
||||
min_stack_allowed = getMinStackAllowed(tr);
|
||||
} else {
|
||||
// Likely a crash
|
||||
System.out.println("Expect='" + matchStr + "'");
|
||||
System.out.println("Actual:");
|
||||
printTestOutput(tr);
|
||||
System.out.println("FAILED: Did not get expected error message with stack size of " + stackSize);
|
||||
throw new RuntimeException("test fails");
|
||||
}
|
||||
}
|
||||
|
||||
return min_stack_allowed;
|
||||
}
|
||||
|
||||
/*
|
||||
* Run the JVM with the minimum allowed stack size. This should always succeed.
|
||||
*/
|
||||
static void checkMinStackAllowed(String stackSize) {
|
||||
if (verbose)
|
||||
System.out.println("*** Testing " + stackSize);
|
||||
TestResult tr = doExec(javaCmd, "-Xss" + stackSize, "-version");
|
||||
if (verbose)
|
||||
printTestOutput(tr);
|
||||
|
||||
if (tr.isOK()) {
|
||||
System.out.println("PASSED: VM launched with minimum allowed stack size of " + stackSize);
|
||||
} else {
|
||||
// Likely a crash
|
||||
System.out.println("Test output:");
|
||||
printTestOutput(tr);
|
||||
System.out.println("FAILED: VM failed to launch with minimum allowed stack size of " + stackSize);
|
||||
throw new RuntimeException("test fails");
|
||||
}
|
||||
}
|
||||
|
||||
public static void main(String... args) {
|
||||
/*
|
||||
* The result of a 16k stack size should be a quick exit with a complaint
|
||||
* that the stack size is too small. However, for some win32 builds, the
|
||||
* stack is always at least 64k, and this also sometimes is the minimum
|
||||
* allowed size, so we won't see an error in this case.
|
||||
*
|
||||
* This test case will also produce a crash on some platforms if the fix
|
||||
* for 6762191 is not yet in place.
|
||||
*/
|
||||
checkStack("16k");
|
||||
|
||||
/*
|
||||
* Try with a 64k stack size, which is the size that the launcher will
|
||||
* set to if you try setting to anything smaller. This should produce the same
|
||||
* result as setting to 16k if the fix for 6762191 is in place.
|
||||
*/
|
||||
String min_stack_allowed = checkStack("64k");
|
||||
|
||||
/*
|
||||
* Try again with the minimum stack size that was given in the error message
|
||||
*/
|
||||
checkMinStackAllowed(min_stack_allowed);
|
||||
|
||||
/*
|
||||
* Try again with a size that is not OS page aligned. This is to help test that
|
||||
* asserts added for 8176768 are not triggered.
|
||||
*/
|
||||
checkMinStackAllowed("513k");
|
||||
|
||||
/*
|
||||
* Try with 0k which indicates that the default thread stack size either from JVM or system
|
||||
* will be used, this should always succeed.
|
||||
*/
|
||||
checkMinStackAllowed("0k");
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue