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/*
* Copyright (C) 2015 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "PingPongStackOverflowTest.h"
#include "InitializeThreading.h"
#include "JSContextRefPrivate.h"
#include "JavaScriptCore.h"
#include "Options.h"
#include <wtf/text/StringBuilder.h>
using JSC::Options;
static JSGlobalContextRef context = nullptr;
static int nativeRecursionCount = 0;
static bool PingPongStackOverflowObject_hasInstance(JSContextRef context, JSObjectRef constructor, JSValueRef possibleValue, JSValueRef* exception)
{
UNUSED_PARAM(context);
UNUSED_PARAM(constructor);
JSStringRef hasInstanceName = JSStringCreateWithUTF8CString("hasInstance");
JSValueRef hasInstance = JSObjectGetProperty(context, constructor, hasInstanceName, exception);
JSStringRelease(hasInstanceName);
if (!hasInstance)
return false;
int countAtEntry = nativeRecursionCount++;
JSValueRef result = 0;
if (nativeRecursionCount < 100) {
JSObjectRef function = JSValueToObject(context, hasInstance, exception);
result = JSObjectCallAsFunction(context, function, constructor, 1, &possibleValue, exception);
} else {
StringBuilder builder;
builder.append("dummy.valueOf([0]");
for (int i = 1; i < 35000; i++) {
builder.append(", [");
builder.appendNumber(i);
builder.append("]");
}
builder.append(");");
JSStringRef script = JSStringCreateWithUTF8CString(builder.toString().utf8().data());
result = JSEvaluateScript(context, script, NULL, NULL, 1, exception);
JSStringRelease(script);
}
--nativeRecursionCount;
if (nativeRecursionCount != countAtEntry)
printf(" ERROR: PingPongStackOverflow test saw a recursion count mismatch\n");
return result && JSValueToBoolean(context, result);
}
JSClassDefinition PingPongStackOverflowObject_definition = {
0,
kJSClassAttributeNone,
"PingPongStackOverflowObject",
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
PingPongStackOverflowObject_hasInstance,
NULL,
};
static JSClassRef PingPongStackOverflowObject_class(JSContextRef context)
{
UNUSED_PARAM(context);
static JSClassRef jsClass;
if (!jsClass)
jsClass = JSClassCreate(&PingPongStackOverflowObject_definition);
return jsClass;
}
// This tests tests a stack overflow on VM reentry into a JS function from a native function
// after ping-pong'ing back and forth between JS and native functions multiple times.
// This test should not hang or crash.
int testPingPongStackOverflow()
{
bool failed = false;
JSC::initializeThreading();
Options::initialize(); // Ensure options is initialized first.
auto origReservedZoneSize = Options::reservedZoneSize();
auto origErrorModeReservedZoneSize = Options::errorModeReservedZoneSize();
auto origUseLLInt = Options::useLLInt();
auto origMaxPerThreadStackUsage = Options::maxPerThreadStackUsage();
Options::reservedZoneSize() = 128 * KB;
Options::errorModeReservedZoneSize() = 64 * KB;
#if ENABLE(JIT)
// Normally, we want to disable the LLINT to force the use of JITted code which is necessary for
// reproducing the regression in https://bugs.webkit.org/show_bug.cgi?id=148749. However, we only
// want to do this if the LLINT isn't the only available execution engine.
Options::useLLInt() = false;
#endif
const char* scriptString =
"var count = 0;" \
"PingPongStackOverflowObject.hasInstance = function f() {" \
" return (undefined instanceof PingPongStackOverflowObject);" \
"};" \
"PingPongStackOverflowObject.__proto__ = undefined;" \
"undefined instanceof PingPongStackOverflowObject;";
JSValueRef scriptResult = nullptr;
JSValueRef exception = nullptr;
JSStringRef script = JSStringCreateWithUTF8CString(scriptString);
nativeRecursionCount = 0;
context = JSGlobalContextCreateInGroup(nullptr, nullptr);
JSObjectRef globalObject = JSContextGetGlobalObject(context);
ASSERT(JSValueIsObject(context, globalObject));
JSObjectRef PingPongStackOverflowObject = JSObjectMake(context, PingPongStackOverflowObject_class(context), NULL);
JSStringRef PingPongStackOverflowObjectString = JSStringCreateWithUTF8CString("PingPongStackOverflowObject");
JSObjectSetProperty(context, globalObject, PingPongStackOverflowObjectString, PingPongStackOverflowObject, kJSPropertyAttributeNone, NULL);
JSStringRelease(PingPongStackOverflowObjectString);
unsigned stackSize = 32 * KB;
Options::maxPerThreadStackUsage() = stackSize + Options::reservedZoneSize();
exception = nullptr;
scriptResult = JSEvaluateScript(context, script, nullptr, nullptr, 1, &exception);
if (!exception) {
printf("FAIL: PingPongStackOverflowError not thrown in PingPongStackOverflow test\n");
failed = true;
} else if (nativeRecursionCount) {
printf("FAIL: Unbalanced native recursion count: %d in PingPongStackOverflow test\n", nativeRecursionCount);
failed = true;
} else {
printf("PASS: PingPongStackOverflow test.\n");
}
Options::reservedZoneSize() = origReservedZoneSize;
Options::errorModeReservedZoneSize() = origErrorModeReservedZoneSize;
Options::useLLInt() = origUseLLInt;
Options::maxPerThreadStackUsage() = origMaxPerThreadStackUsage;
return failed;
}
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