1 // Copyright 2014 the V8 project authors. All rights reserved. 2 // Redistribution and use in source and binary forms, with or without 3 // modification, are permitted provided that the following conditions are 4 // met: 5 // 6 // * Redistributions of source code must retain the above copyright 7 // notice, this list of conditions and the following disclaimer. 8 // * Redistributions in binary form must reproduce the above 9 // copyright notice, this list of conditions and the following 10 // disclaimer in the documentation and/or other materials provided 11 // with the distribution. 12 // * Neither the name of Google Inc. nor the names of its 13 // contributors may be used to endorse or promote products derived 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 #include "test/cctest/cctest.h" 29 30 using namespace v8::internal; 31 32 33 static void SetUpNewSpaceWithPoisonedMementoAtTop() { 34 Isolate* isolate = CcTest::i_isolate(); 35 Heap* heap = isolate->heap(); 36 NewSpace* new_space = heap->new_space(); 37 38 // Make sure we can allocate some objects without causing a GC later. 39 heap->CollectAllGarbage(); 40 41 // Allocate a string, the GC may suspect a memento behind the string. 42 Handle<SeqOneByteString> string = 43 isolate->factory()->NewRawOneByteString(12).ToHandleChecked(); 44 CHECK(*string); 45 46 // Create an allocation memento behind the string with a garbage allocation 47 // site pointer. 48 AllocationMemento* memento = 49 reinterpret_cast<AllocationMemento*>(new_space->top() + kHeapObjectTag); 50 memento->set_map_no_write_barrier(heap->allocation_memento_map()); 51 memento->set_allocation_site( 52 reinterpret_cast<AllocationSite*>(kHeapObjectTag), SKIP_WRITE_BARRIER); 53 } 54 55 56 TEST(Regress340063) { 57 CcTest::InitializeVM(); 58 if (!i::FLAG_allocation_site_pretenuring) return; 59 v8::HandleScope scope(CcTest::isolate()); 60 61 SetUpNewSpaceWithPoisonedMementoAtTop(); 62 63 // Call GC to see if we can handle a poisonous memento right after the 64 // current new space top pointer. 65 CcTest::i_isolate()->heap()->CollectAllGarbage( 66 Heap::kAbortIncrementalMarkingMask); 67 } 68 69 70 TEST(Regress470390) { 71 CcTest::InitializeVM(); 72 if (!i::FLAG_allocation_site_pretenuring) return; 73 v8::HandleScope scope(CcTest::isolate()); 74 75 SetUpNewSpaceWithPoisonedMementoAtTop(); 76 77 // Set the new space limit to be equal to the top. 78 Address top = CcTest::i_isolate()->heap()->new_space()->top(); 79 *(CcTest::i_isolate()->heap()->new_space()->allocation_limit_address()) = top; 80 81 // Call GC to see if we can handle a poisonous memento right after the 82 // current new space top pointer. 83 CcTest::i_isolate()->heap()->CollectAllGarbage( 84 Heap::kAbortIncrementalMarkingMask); 85 } 86 87 88 TEST(BadMementoAfterTopForceScavenge) { 89 CcTest::InitializeVM(); 90 if (!i::FLAG_allocation_site_pretenuring) return; 91 v8::HandleScope scope(CcTest::isolate()); 92 93 SetUpNewSpaceWithPoisonedMementoAtTop(); 94 95 // Force GC to test the poisoned memento handling 96 CcTest::i_isolate()->heap()->CollectGarbage(i::NEW_SPACE); 97 } 98
