223843 2021-03-27 14:19:46 -0700 Fix a crash caused by AVIF decoding failure 2021-04-26 10:51:33 -0700 1 1 1 Unclassified WebKit Images WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED https://bugs.webkit.org/show_bug.cgi?id=225039 InRadar P2 Normal --- 1 changseok changseok alex cgarcia pnormand sabouhallawa webkit-bug-importer oldest_to_newest 1744542 0 changseok 2021-03-27 14:19:46 -0700 https://gif2avif.com/browser-test/ crashes where AVIF support is enabled. #0 0x00007fa33d834cf0 in WebCore::AVIFImageReader::imageCount() const () from target:/app/webkit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37 #1 0x00007fa33d834441 in WebCore::AVIFImageDecoder::tryDecodeSize(bool) () from target:/app/webkit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37 #2 0x00007fa33d813ef3 in WebCore::ScalableImageDecoder::setData(WebCore::SharedBuffer&, bool) () from target:/app/webkit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37 #3 0x00007fa33cfa765c in WebCore::ImageSource::dataChanged(WebCore::SharedBuffer*, bool) () from target:/app/webkit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37 #4 0x00007fa33cd07363 in WebCore::CachedImage::updateImageData(bool) () from target:/app/webkit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37 #5 0x00007fa33cd0d0e0 in WebCore::CachedImage::updateBufferInternal(WebCore::SharedBuffer&) () from target:/app/webkit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37 #6 0x00007fa33cd0d332 in WebCore::CachedImage::updateBuffer(WebCore::SharedBuffer&) () from target:/app/webkit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37 #7 0x00007fa33c9dfcad in WebCore::ImageDocumentParser::appendBytes(WebCore::DocumentWriter&, char const*, unsigned long) () from target:/app/webkit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37 #8 0x00007fa33b550696 in WebKit::WebFrameLoaderClient::committedLoad(WebCore::DocumentLoader*, char const*, int) () from target:/app/webkit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37 #9 0x00007fa33cc527aa in WebCore::DocumentLoader::commitLoad(char const*, int) () from target:/app/webkit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37 #10 0x00007fa33cd1b6d8 in WebCore::CachedRawResource::notifyClientsDataWasReceived(char const*, unsigned int) [clone .part.0] () from target:/app/webkit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37 #11 0x00007fa33cd1bd5a in WebCore::CachedRawResource::updateBuffer(WebCore::SharedBuffer&) [clone .part.0] () from target:/app/webkit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37 #12 0x00007fa33ccd6c22 in WebCore::SubresourceLoader::didReceiveDataOrBuffer(char const*, int, WTF::RefPtr<WebCore::SharedBuffer, WTF::RawPtrTraits<WebCore::SharedBuffer>, WTF::DefaultRefDerefTraits<WebCore::Shar--Type <RET> for more, q to quit, c to continue without paging-- edBuffer> >&&, long long, WebCore::DataPayloadType) () from target:/app/webkit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37 #13 0x00007fa33ccd6dc5 in WebCore::SubresourceLoader::didReceiveData(char const*, unsigned int, long long, WebCore::DataPayloadType) () from target:/app/webkit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37 Backtrace stopped: Cannot access memory at address 0x7fff96d4b698 1744543 1 424467 changseok 2021-03-27 14:45:30 -0700 Created attachment 424467 Patch 1744902 2 424467 pnormand 2021-03-29 13:59:03 -0700 Comment on attachment 424467 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=424467&action=review > Source/WebCore/ChangeLog:14 > + No new tests since no functionality changed. I think a test ensuring we no longer crash when loading a specific file could still make sense. There's a few already for the video-as-img-tag scenario. 1745112 3 424467 changseok 2021-03-30 07:37:48 -0700 Comment on attachment 424467 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=424467&action=review >> Source/WebCore/ChangeLog:14 >> + No new tests since no functionality changed. > > I think a test ensuring we no longer crash when loading a specific file could still make sense. There's a few already for the video-as-img-tag scenario. O.K. Let me look into if we can create a reliable test. 1746635 4 changseok 2021-04-02 13:32:26 -0700 The minimal test case that reproduces the crash is <iframe src='https://gif2avif.com/sample.avif'></iframe> However, the crash does not happen when the sample.avif is loaded from the local. <iframe src='sample.avif'></iframe> Is there a way to mimic a network delay in webkit test infrastructure? 1746653 5 changseok 2021-04-02 14:02:05 -0700 I found bug 194506. There was testRunner.setDefersLoading but it isn't for wk2 anymore. 1746708 6 changseok 2021-04-02 15:54:47 -0700 I could make a simplified test here. https://shivamidow.github.io/avif-crash.html But I don't know how to mimic it in the webkit test environment. It is hard to reproduce the crash because there is no way to reliably simulate the necessary network delay of the avif image transfer. 1746789 7 pnormand 2021-04-03 10:22:10 -0700 One option could be to throttle the HTTP request? There´s a CGI script for videos: LayoutTests/http/tests/media/video-throttled-load.cgi Maybe a similar approach could be used? 1746893 8 webkit-bug-importer 2021-04-04 21:23:16 -0700 <rdar://problem/76205084> 1747164 9 sabouhallawa 2021-04-05 16:47:00 -0700 You may use LayoutTests/http/tests/images/resources/load-and-stall.php. It is used to mimic the network delay in many http layout tests. 1747433 10 changseok 2021-04-06 08:12:24 -0700 (In reply to Said Abou-Hallawa from comment #9) > You may use LayoutTests/http/tests/images/resources/load-and-stall.php. It > is used to mimic the network delay in many http layout tests. @Philippe and @Said, Thanks. Let me give a shot. 1753888 11 426989 changseok 2021-04-24 12:45:45 -0700 Created attachment 426989 Patch 1753889 12 426990 changseok 2021-04-24 13:25:26 -0700 Created attachment 426990 Patch 1754001 13 426990 pnormand 2021-04-25 08:28:38 -0700 Comment on attachment 426990 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=426990&action=review > LayoutTests/TestExpectations:125 > fast/images/avif-image-decoding.html [ Skip ] > fast/images/avif-as-image.html [ Skip ] > fast/images/animated-avif.html [ Skip ] > +http/tests/images/avif-partial-load-crash.html [ Skip ] Oh, I realize now I forgot to unskip these in the glib TestExpections! They should pass now that the avif decoder is enabled on the bots. Can you check it please? Either in this patch or a new one :) 1754089 14 426990 changseok 2021-04-25 17:31:20 -0700 Comment on attachment 426990 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=426990&action=review Thanks! >> LayoutTests/TestExpectations:125 >> +http/tests/images/avif-partial-load-crash.html [ Skip ] > > Oh, I realize now I forgot to unskip these in the glib TestExpections! They should pass now that the avif decoder is enabled on the bots. Can you check it please? Either in this patch or a new one :) I will upload a separate patch to handle this. 1754095 15 ews-feeder 2021-04-25 18:03:29 -0700 Committed r276578 (237014@main): <https://commits.webkit.org/237014@main> All reviewed patches have been landed. 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