我有同样的崩溃。但是，我设法对其进行了符号化，因此它将包含更多有用的信息。如果它有帮助，起初我认为设备内存不足并崩溃，但是在仔细分析设备崩溃时，我注意到有很多可用的。所以这不可能。在 UIWebView 中加载的网站是一个密集的 HTML5 游戏。
Thread : Crashed: WebThread (com.apple.root.default-overcommit-priority)
0 CoreFoundation 0x00000001872491c4 CFSetRemoveValue + 36
1 CFNetwork 0x0000000186ee2b3c __CFURLCache::removeMMappedDataFromSet(void*) + 60
2 CFNetwork 0x0000000186ee2b3c __CFURLCache::removeMMappedDataFromSet(void*) + 60
3 CFNetwork 0x0000000186ee49c8 mmapFileDeallocate(void*, void*) + 40
4 CoreFoundation 0x00000001872ee81c __CFDataDeallocate + 44
5 CoreFoundation 0x000000018724213c CFRelease + 316
6 WebCore 0x0000000190d99ef4 WebCore::SharedBuffer::clear() + 212
7 WebCore 0x0000000190d99d68 WebCore::SharedBuffer::~SharedBuffer() + 56
8 WebCore 0x0000000190d99d14 WebCore::ResourceBuffer::~ResourceBuffer() + 68
9 WebCore 0x0000000190c79e90 WebCore::CachedResource::~CachedResource() + 300
10 WebCore 0x0000000190c79d54 WebCore::CachedCSSStyleSheet::~CachedCSSStyleSheet() + 172
11 WebCore 0x0000000190c79c98 WebCore::CachedCSSStyleSheet::~CachedCSSStyleSheet() + 20
12 WebCore 0x0000000190bec558 WebCore::CachedResource::deleteIfPossible() + 160
13 WebCore 0x0000000190cdd660 WebCore::MemoryCache::pruneDeadResourcesToSize(unsigned int) + 588
14 WebCore 0x0000000190b661c4 WebCore::MemoryCache::prune() + 132
15 WebCore 0x0000000190c6b4f4 WebCore::BitmapImage::draw(WebCore::GraphicsContext*, WebCore::FloatRect const&, WebCore::FloatRect const&, WebCore::ColorSpace, WebCore::CompositeOperator, WebCore::BlendMode, WebCore::RespectImageOrientationEnum) + 504
16 WebCore 0x0000000190cc9ac4 WebCore::Image::drawTiled(WebCore::GraphicsContext*, WebCore::FloatRect const&, WebCore::FloatPoint const&, WebCore::FloatSize const&, WebCore::ColorSpace, WebCore::CompositeOperator, WebCore::BlendMode) + 568
17 WebCore 0x0000000190cc986c WebCore::GraphicsContext::drawTiledImage(WebCore::Image*, WebCore::ColorSpace, WebCore::IntRect const&, WebCore::IntPoint const&, WebCore::IntSize const&, WebCore::CompositeOperator, bool, WebCore::BlendMode) + 288
18 WebCore 0x0000000190bbb0cc WebCore::RenderBoxModelObject::paintFillLayerExtended(WebCore::PaintInfo const&, WebCore::Color const&, WebCore::FillLayer const*, WebCore::LayoutRect const&, WebCore::BackgroundBleedAvoidance, WebCore::InlineFlowBox*, WebCore::LayoutSize const&, WebCore::CompositeOperator, WebCore::RenderObject*) + 4064
19 WebCore 0x0000000190bb9ef4 WebCore::RenderBox::paintFillLayers(WebCore::PaintInfo const&, WebCore::Color const&, WebCore::FillLayer const*, WebCore::LayoutRect const&, WebCore::BackgroundBleedAvoidance, WebCore::CompositeOperator, WebCore::RenderObject*) + 624
20 WebCore 0x0000000190bb9bcc WebCore::RenderBox::paintBackground(WebCore::PaintInfo const&, WebCore::LayoutRect const&, WebCore::BackgroundBleedAvoidance) + 476
21 WebCore 0x0000000190bb8b94 WebCore::RenderBox::paintBoxDecorations(WebCore::PaintInfo&, WebCore::LayoutPoint const&) + 464
22 WebCore 0x0000000190bb61ac WebCore::RenderBlock::paintObject(WebCore::PaintInfo&, WebCore::LayoutPoint const&) + 108
23 WebCore 0x0000000190bb87b0 WebCore::RenderBlock::paint(WebCore::PaintInfo&, WebCore::LayoutPoint const&) + 292
24 WebCore 0x0000000190bb5e80 WebCore::RenderLayer::paintBackgroundForFragments(WTF::Vector<WebCore::LayerFragment, 1ul, WTF::CrashOnOverflow> const&, WebCore::GraphicsContext*, WebCore::GraphicsContext*, WebCore::LayoutRect const&, bool, WebCore::RenderLayer::LayerPaintingInfo const&, unsigned int, WebCore::RenderObject*) + 348
25 WebCore 0x0000000190bb3d40 WebCore::RenderLayer::paintLayerContents(WebCore::GraphicsContext*, WebCore::RenderLayer::LayerPaintingInfo const&, unsigned int) + 1404
26 WebCore 0x0000000190d2124c WebCore::RenderLayerBacking::paintIntoLayer(WebCore::GraphicsLayer const*, WebCore::GraphicsContext*, WebCore::IntRect const&, unsigned int, unsigned int) + 316
27 WebCore 0x0000000190d20f7c WebCore::RenderLayerBacking::paintContents(WebCore::GraphicsLayer const*, WebCore::GraphicsContext&, unsigned int, WebCore::IntRect const&) + 356
28 WebCore 0x0000000190d20e00 WebCore::GraphicsLayer::paintGraphicsLayerContents(WebCore::GraphicsContext&, WebCore::IntRect const&) + 156
29 WebCore 0x000000019102de14 non-virtual thunk to WebCore::GraphicsLayerCA::platformCALayerPaintContents(WebCore::GraphicsContext&, WebCore::IntRect const&) + 32
30 WebCore 0x0000000190d20a14 drawLayerContents(CGContext*, CALayer*, WebCore::PlatformCALayer*) + 776
31 QuartzCore 0x0000000189f176c0 CABackingStoreUpdate_ + 2792
32 QuartzCore 0x0000000189f16bc8 x_blame_allocations + 112
33 QuartzCore 0x0000000189f16758 CA::Layer::display_() + 1260
34 WebCore 0x0000000190d20684 -[WebLayer display] + 68
35 QuartzCore 0x0000000189ef701c CA::Layer::display_if_needed(CA::Transaction*) + 244
36 QuartzCore 0x0000000189ef6ce4 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 44
37 QuartzCore 0x0000000189ef6560 CA::Context::commit_transaction(CA::Transaction*) + 280
38 QuartzCore 0x0000000189ef6304 CA::Transaction::commit() + 424
39 QuartzCore 0x0000000189eefc38 CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 80
40 CoreFoundation 0x0000000187307858 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 32
41 CoreFoundation 0x0000000187304ae0 __CFRunLoopDoObservers + 372
42 CoreFoundation 0x0000000187245df8 CFRunLoopRunSpecific + 492
43 WebCore 0x0000000190b633bc RunWebThread(void*) + 472
44 libsystem_pthread.dylib 0x0000000193fbfe1c _pthread_body + 168
45 libsystem_pthread.dylib 0x0000000193fbfd74 _pthread_body