225175 2021-04-28 17:17:43 -0700 [GPU Process] REGRESSION(r272888): Don't assert the validity of the dataURL mimeType inside GPU Process 2021-04-29 01:27:21 -0700 1 1 1 Unclassified WebKit Canvas WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED https://bugs.webkit.org/show_bug.cgi?id=221885 InRadar P2 Normal --- 1 sabouhallawa sabouhallawa dino graouts kkinnunen simon.fraser thorton webkit-bug-importer oldest_to_newest 1755246 0 sabouhallawa 2021-04-28 17:17:43 -0700 We disabled image decoding inside GPUProcess in r272888. MIMETypeRegistry::isSupportedImageMIMETypeForEncoding() will return false for any mimeType if it is called inside GPUProcess. So ImageBufferCGBackend::toCFData() should not assert the validity of the mimeType in this case. Note: If for any reason the mimeType is altered while sending the message RemoteRenderingBackend.GetDataURLForImageBuffer to GPU Process, ImageBufferCGBackend::toCFData() will fail peacefully if the "system" frameworks do not support the mimeType. 1755249 1 sabouhallawa 2021-04-28 17:18:23 -0700 <rdar://76286963> 1755270 2 427317 sabouhallawa 2021-04-28 18:02:48 -0700 Created attachment 427317 Patch 1755273 3 427319 sabouhallawa 2021-04-28 18:07:33 -0700 Created attachment 427319 Patch 1755284 4 sabouhallawa 2021-04-28 18:54:50 -0700 If this is too much to fix an assertion, I can remove it altogether. 1755288 5 sabouhallawa 2021-04-28 19:08:51 -0700 This is the call stack we hit when GPUP for 2D canvas is enabled and toDataURL() is called: ASSERTION FAILED: MIMETypeRegistry::isSupportedImageMIMETypeForEncoding(mimeType) ./platform/graphics/cg/ImageBufferCGBackend.cpp(169) : virtual RetainPtr<CFDataRef> WebCore::ImageBufferCGBackend::toCFData(const WTF::String &, Optional<double>, WebCore::PreserveResolution) const 1 0x131ea1879 WTFCrash 2 0x142d26e0b WTFCrashWithInfo(int, char const*, char const*, int) 3 0x146c83a27 WebCore::ImageBufferCGBackend::toCFData(WTF::String const&, WTF::Optional<double>, WebCore::PreserveResolution) const 4 0x146c86212 WebCore::ImageBufferIOSurfaceBackend::toCFData(WTF::String const&, WTF::Optional<double>, WebCore::PreserveResolution) const 5 0x146c8457a WebCore::ImageBufferCGBackend::toDataURL(WTF::String const&, WTF::Optional<double>, WebCore::PreserveResolution) const 6 0x11b7e8dbe WebCore::ConcreteImageBuffer<WebKit::ImageBufferShareableMappedIOSurfaceBackend>::toDataURL(WTF::String const&, WTF::Optional<double>, WebCore::PreserveResolution) const 7 0x11b7daf88 WebKit::RemoteRenderingBackend::getDataURLForImageBuffer(WTF::String const&, WTF::Optional<double>, WebCore::PreserveResolution, WTF::ObjectIdentifier<WebCore::RenderingResourceIdentifierType>, WTF::CompletionHandler<void (WTF::String&&)>&&) 8 0x11b7a276c void IPC::callMemberFunctionImpl<WebKit::RemoteRenderingBackend, void (WebKit::RemoteRenderingBackend::*)(WTF::String const&, WTF::Optional<double>, WebCore::PreserveResolution, WTF::ObjectIdentifier<WebCore::RenderingResourceIdentifierType>, WTF::CompletionHandler<void (WTF::String&&)>&&), void (WTF::String const&), std::1::tuple<WTF::String, WTF::Optional<double>, WebCore::PreserveResolution, WTF::ObjectIdentifier<WebCore::RenderingResourceIdentifierType> >, 0ul, 1ul, 2ul, 3ul>(WebKit::RemoteRenderingBackend*, void (WebKit::RemoteRenderingBackend::*)(WTF::String const&, WTF::Optional<double>, WebCore::PreserveResolution, WTF::ObjectIdentifier<WebCore::RenderingResourceIdentifierType>, WTF::CompletionHandler<void (WTF::String&&)>&&), WTF::CompletionHandler<void (WTF::String const&)>&&, std::1::tuple<WTF::String, WTF::Optional<double>, WebCore::PreserveResolution, WTF::ObjectIdentifier<WebCore::RenderingResourceIdentifierType> >&&, std::__1::integer_sequence<unsigned long, 0ul, 1ul, 2ul, 3ul>) 9 0x11b79ffb2 void IPC::callMemberFunction<WebKit::RemoteRenderingBackend, void (WebKit::RemoteRenderingBackend::*)(WTF::String const&, WTF::Optional<double>, WebCore::PreserveResolution, WTF::ObjectIdentifier<WebCore::RenderingResourceIdentifierType>, WTF::CompletionHandler<void (WTF::String&&)>&&), void (WTF::String const&), std::1::tuple<WTF::String, WTF::Optional<double>, WebCore::PreserveResolution, WTF::ObjectIdentifier<WebCore::RenderingResourceIdentifierType> >, std::1::integer_sequence<unsigned long, 0ul, 1ul, 2ul, 3ul> >(std::__1::tuple<WTF::String, WTF::Optional<double>, WebCore::PreserveResolution, WTF::ObjectIdentifier<WebCore::RenderingResourceIdentifierType> >&&, WTF::CompletionHandler<void (WTF::String const&)>&&, WebKi 1755307 6 427319 graouts 2021-04-29 00:31:49 -0700 Comment on attachment 427319 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=427319&action=review > Source/WebCore/platform/graphics/cg/ImageBufferCGBackend.cpp:178 > + ASSERT_IMPLIES(!isInGPUProcess(), MIMETypeRegistry::isSupportedImageMIMETypeForEncoding(mimeType)); Wenson suggested that having a `isInGPUProcess()` check in WebCore platform code was probably not a good idea. 1755308 7 graouts 2021-04-29 00:32:54 -0700 (In reply to Antoine Quint from comment #6) > Comment on attachment 427319 [details] > Patch > > View in context: > https://bugs.webkit.org/attachment.cgi?id=427319&action=review > > > Source/WebCore/platform/graphics/cg/ImageBufferCGBackend.cpp:178 > > + ASSERT_IMPLIES(!isInGPUProcess(), MIMETypeRegistry::isSupportedImageMIMETypeForEncoding(mimeType)); > > Wenson suggested that having a `isInGPUProcess()` check in WebCore platform > code was probably not a good idea. Although I suppose this merely checks that this can only be false when in the GPU process. 1755310 8 ews-feeder 2021-04-29 00:45:54 -0700 Committed r276753 (237149@main): <https://commits.webkit.org/237149@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 427319. 1755312 9 sabouhallawa 2021-04-29 01:27:21 -0700 A follow-up patch: r276758: <https://commits.webkit.org/r276758>. 427317 2021-04-28 18:02:48 -0700 2021-04-28 18:07:31 -0700 Patch bug-225175-20210428180247.patch text/plain 5004 sabouhallawa U3VidmVyc2lvbiBSZXZpc2lvbjogMjc2NzIyCmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViQ29yZS9D aGFuZ2VMb2cgYi9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKaW5kZXggM2ZiYzhjNWZjNjc5ZjA2 Yzc1M2E3Yjc3MmZiODc5YmY2ODk0M2YyOC4uMGJlN2U2OWYyMzZhYmYzYzA1MGYwNDJkYjZkNTU3 OTM5ZmNhNTFiNiAxMDA2NDQKLS0tIGEvU291cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCisrKyBiL1Nv dXJjZS9XZWJDb3JlL0NoYW5nZUxvZwpAQCAtMSwzICsxLDE4IEBACisyMDIxLTA0LTI4ICBTYWlk IEFib3UtSGFsbGF3YSAgPHNhaWRAYXBwbGUuY29tPgorCisgICAgICAgIFtHUFUgUHJvY2Vzc10g RG9uJ3QgYXNzZXJ0IHRoZSB2YWxpZGl0eSBvZiB0aGUgZGF0YVVSTCBtaW1lVHlwZSBpbnNpZGUg R1BVIFByb2Nlc3MKKyAgICAgICAgaHR0cHM6Ly9idWdzLndlYmtpdC5vcmcvc2hvd19idWcuY2dp P2lkPTIyNTE3NQorICAgICAgICA8cmRhcjovLzc2Mjg2OTYzPgorCisgICAgICAgIFJldmlld2Vk 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