219209 2020-11-20 09:43:36 -0800 AudioWorkletProcessor::process() may get called on non-audio worklet thread and crash 2020-11-20 13:38:41 -0800 1 1 1 Unclassified WebKit Web Audio WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 cdumez cdumez cdumez darin eric.carlson ews-watchlist ggaren glenn jer.noble philipj sergio webkit-bug-importer oldest_to_newest 1709516 0 cdumez 2020-11-20 09:43:36 -0800 AudioWorkletProcessor::process() may get called on non-audio worklet thread and crash: Thread 13 Crashed:: com.apple.audio.IOThread.client 0 com.apple.JavaScriptCore 0x000000056c733bae WTFCrash + 14 (Assertions.cpp:295) 1 com.apple.WebCore 0x000000054e83c77b WTFCrashWithInfo(int, char const*, char const*, int) + 27 (Assertions.h:671) 2 com.apple.WebCore 0x0000000550b22ab6 WebCore::AudioWorkletProcessor::process(WTF::Vector<WTF::RefPtr<WebCore::AudioBus, WTF::RawPtrTraits<WebCore::AudioBus>, WTF::DefaultRefDerefTraits<WebCore::AudioBus> >, 0ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc> const&, WTF::Vector<WTF::Ref<WebCore::AudioBus, WTF::RawPtrTraits<WebCore::AudioBus> >, 0ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc>&, WTF::HashMap<WTF::String, std::__1::unique_ptr<WebCore::AudioArray<float>, std::__1::default_delete<WebCore::AudioArray<float> > >, WTF::DefaultHash<WTF::String>, WTF::HashTraits<WTF::String>, WTF::HashTraits<std::__1::unique_ptr<WebCore::AudioArray<float>, std::__1::default_delete<WebCore::AudioArray<float> > > > > const&, bool&) + 374 (AudioWorkletProcessor.cpp:257) 3 com.apple.WebCore 0x0000000550b22571 WebCore::AudioWorkletNode::process(unsigned long) + 1489 (AudioWorkletNode.cpp:222) 4 com.apple.WebCore 0x0000000550ace01e WebCore::AudioNode::processIfNecessary(unsigned long) + 462 (AudioNode.cpp:474) 5 com.apple.WebCore 0x0000000550b2be82 WebCore::BaseAudioContext::processAutomaticPullNodes(unsigned long) + 194 (BaseAudioContext.cpp:904) 6 com.apple.WebCore 0x0000000550ac84a6 WebCore::AudioDestinationNode::render(WebCore::AudioBus*, WebCore::AudioBus*, unsigned long, WebCore::AudioIOPosition const&) + 566 (AudioDestinationNode.cpp:102) 7 com.apple.WebCore 0x00000005526d1939 WebCore::AudioDestinationCocoa::provideInput(WebCore::AudioBus*, unsigned long) + 185 (AudioDestinationCocoa.cpp:229) 8 com.apple.WebCore 0x00000005526aeea5 WebCore::MultiChannelResampler::ChannelProvider::provideInput(WebCore::AudioBus*, unsigned long) + 309 (MultiChannelResampler.cpp:70) 9 com.apple.WebCore 0x00000005526ca72d WebCore::SincResampler::consumeSource(float*, unsigned int) + 349 (SincResampler.cpp:203) 10 com.apple.WebCore 0x00000005526cb4e8 WebCore::SincResampler::process(WebCore::AudioSourceProvider*, float*, unsigned long) + 3240 (SincResampler.cpp:524) 11 com.apple.WebCore 0x00000005526a69e7 WebCore::MultiChannelResampler::process(WebCore::AudioSourceProvider*, WebCore::AudioBus*, unsigned long) + 279 (MultiChannelResampler.cpp:120) 12 com.apple.WebCore 0x00000005526d174a WebCore::AudioDestinationCocoa::renderOnRenderingThead(unsigned long) + 154 (AudioDestinationCocoa.cpp:217) 13 com.apple.WebCore 0x00000005526d1440 WebCore::AudioDestinationCocoa::render(double, unsigned long long, unsigned int, AudioBufferList*) + 528 (AudioDestinationCocoa.cpp:207) 14 com.apple.WebCore 0x00000005526d1a54 WebCore::AudioOutputUnitAdaptor::inputProc(void*, unsigned int*, AudioTimeStamp const*, unsigned int, unsigned int, AudioBufferList*) + 132 (AudioOutputUnitAdaptor.cpp:69) Reported by @JackSchaedler on Twitter. 1709529 1 414692 cdumez 2020-11-20 10:05:06 -0800 Created attachment 414692 Patch 1709595 2 414692 ggaren 2020-11-20 12:33:54 -0800 Comment on attachment 414692 Patch r=me Does this mean we can remove the thread check before we take the JS lock? 1709597 3 cdumez 2020-11-20 12:36:40 -0800 (In reply to Geoffrey Garen from comment #2) > Comment on attachment 414692 [details] > Patch > > r=me > > Does this mean we can remove the thread check before we take the JS lock? I will double check but I do not believe so. Until the worklet is ready, handlePreRenderTask() and process() will get called on a non-worklet thread. 1709602 4 ews-feeder 2020-11-20 12:48:46 -0800 Committed r270127: <https://trac.webkit.org/changeset/270127> All reviewed patches have been landed. Closing bug and clearing flags on attachment 414692. 1709603 5 webkit-bug-importer 2020-11-20 12:49:16 -0800 <rdar://problem/71638769> 414692 2020-11-20 10:05:06 -0800 2020-11-20 13:38:41 -0800 Patch bug-219209-20201120100505.patch text/plain 14662 cdumez U3VidmVyc2lvbiBSZXZpc2lvbjogMjcwMTE0CmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViQ29yZS9D aGFuZ2VMb2cgYi9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKaW5kZXggNTY5YjZhZjMyMTk1MDgy ZGIwNDQyZTA4NDMyNThjZDUxZDA1ZjkwYi4uZmJlZGVjZmZmOTY4ZjNhZGExM2FiZjBiYmEzNjk0 NDM3OTUxYjgwYSAxMDA2NDQKLS0tIGEvU291cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCisrKyBiL1Nv dXJjZS9XZWJDb3JlL0NoYW5nZUxvZwpAQCAtMSwzICsxLDQzIEBACisyMDIwLTExLTIwICBDaHJp cyBEdW1leiAgPGNkdW1lekBhcHBsZS5jb20+CisKKyAgICAgICAgQXVkaW9Xb3JrbGV0UHJvY2Vz c29yOjpwcm9jZXNzKCkgbWF5IGdldCBjYWxsZWQgb24gbm9uLWF1ZGlvIHdvcmtsZXQgdGhyZWFk IGFuZCBjcmFzaAorICAgICAgICBodHRwczovL2J1Z3Mud2Via2l0Lm9yZy9zaG93X2J1Zy5jZ2k/ aWQ9MjE5MjA5CisKKyAgICAgICAgUmV2aWV3ZWQgYnkgTk9CT0RZIChPT1BTISkuCisKKyAgICAg 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