221393 2021-02-03 23:57:43 -0800 Nullptr crash in ApplyStyleCommand::applyRelativeFontStyleChange 2021-02-24 19:28:08 -0800 1 1 1 Unclassified WebKit HTML Editing WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 rniwa webkit-unassigned bfulgham cgarcia ews-feeder fred.wang gpoo product-security rbuis svillar webkit-bug-importer wenson_hsieh oldest_to_newest 1725537 0 419255 rniwa 2021-02-03 23:57:43 -0800 Created attachment 419255 Test e.g. #0 0x6f78bda3e in WTF::OptionSet<WebCore::Node::NodeFlag>::containsAny(WTF::OptionSet<WebCore::Node::NodeFlag>) const+0xbe (WebCore.framework/Versions/A/WebCore:x86_64+0x1c7a3e) #1 0x6f78bd919 in WTF::OptionSet<WebCore::Node::NodeFlag>::contains(WebCore::Node::NodeFlag) const+0xd9 (WebCore.framework/Versions/A/WebCore:x86_64+0x1c7919) #2 0x6f78bd83c in WebCore::Node::hasNodeFlag(WebCore::Node::NodeFlag) const+0xc (WebCore.framework/Versions/A/WebCore:x86_64+0x1c783c) #3 0x6f78bd82d in WebCore::Node::isHTMLElement() const+0xd (WebCore.framework/Versions/A/WebCore:x86_64+0x1c782d) #4 0x6f78bd818 in WTF::TypeCastTraits<WebCore::HTMLElement const, WebCore::Node const, false>::isType(WebCore::Node const&)+0x8 (WebCore.framework/Versions/A/WebCore:x86_64+0x1c7818) #5 0x6f78bd808 in WTF::TypeCastTraits<WebCore::HTMLElement const, WebCore::Node const, false>::isOfType(WebCore::Node const&)+0x8 (WebCore.framework/Versions/A/WebCore:x86_64+0x1c7808) #6 0x6f8813868 in bool WTF::is<WebCore::HTMLElement, WebCore::Node>(WebCore::Node&)+0x8 (WebCore.framework/Versions/A/WebCore:x86_64+0x111d868) #7 0x6fb227bee in WebCore::ApplyStyleCommand::applyRelativeFontStyleChange(WebCore::EditingStyle*)+0x94e (WebCore.framework/Versions/A/WebCore:x86_64+0x3b31bee) #8 0x6fb226236 in WebCore::ApplyStyleCommand::doApply()+0x1a6 (WebCore.framework/Versions/A/WebCore:x86_64+0x3b30236) #9 0x6fb220506 in WebCore::CompositeEditCommand::apply()+0x216 (WebCore.framework/Versions/A/WebCore:x86_64+0x3b2a506) #10 0x6fb296860 in WebCore::Editor::applyStyle(WTF::RefPtr<WebCore::EditingStyle, WTF::RawPtrTraits<WebCore::EditingStyle>, WTF::DefaultRefDerefTraits<WebCore::EditingStyle> >&&, WebCore::EditAction, WebCore::Editor::ColorFilterMode)+0x420 (WebCore.framework/Versions/A/WebCore:x86_64+0x3ba0860) #11 0x6fb2e1dfd in WebCore::applyCommandToFrame(WebCore::Frame&, WebCore::EditorCommandSource, WebCore::EditAction, WTF::Ref<WebCore::EditingStyle, WTF::RawPtrTraits<WebCore::EditingStyle> >&&)+0x10d (WebCore.framework/Versions/A/WebCore:x86_64+0x3bebdfd) #12 0x6fb2e1c86 in WebCore::executeApplyStyle(WebCore::Frame&, WebCore::EditorCommandSource, WebCore::EditAction, WebCore::CSSPropertyID, WTF::String const&)+0xd6 (WebCore.framework/Versions/A/WebCore:x86_64+0x3bebc86) #13 0x6fb2dc1f7 in WebCore::executeFontSizeDelta(WebCore::Frame&, WebCore::Event*, WebCore::EditorCommandSource, WTF::String const&)+0x17 (WebCore.framework/Versions/A/WebCore:x86_64+0x3be61f7) #14 0x6fb2a23eb in WebCore::Editor::Command::execute(WTF::String const&, WebCore::Event*) const+0xdb (WebCore.framework/Versions/A/WebCore:x86_64+0x3bac3eb) #15 0x6faf281f3 in WebCore::Document::execCommand(WTF::String const&, bool, WTF::String const&)+0xf3 (WebCore.framework/Versions/A/WebCore:x86_64+0x38321f3) #16 0x6f81c3199 in WebCore::jsDocumentPrototypeFunction_execCommandBody(JSC::JSGlobalObject*, JSC::CallFrame*, WebCore::JSDocument*)+0x469 (WebCore.framework/Versions/A/WebCore:x86_64+0xacd199) <rdar://problem/73930150> 1730314 1 420656 svillar 2021-02-17 09:28:03 -0800 Created attachment 420656 Patch 1730863 2 420656 fred.wang 2021-02-18 08:38:16 -0800 Comment on attachment 420656 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=420656&action=review > Source/WebCore/editing/ApplyStyleCommand.cpp:396 > + // also merge identical ones. As a consecuence, if |beyondEnd| is a span node located just after |node| it might be merged consequence* 1732437 3 420656 rniwa 2021-02-22 20:06:00 -0800 Comment on attachment 420656 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=420656&action=review > Source/WebCore/editing/ApplyStyleCommand.cpp:381 > + bool nodeSurpassedBeyondEndAfterElementMerging = false; This variable name is rather verbose. Just reachedEnd is enough. > Source/WebCore/editing/ApplyStyleCommand.cpp:382 > + for (Node* node = startNode; node != beyondEnd && !nodeSurpassedBeyondEndAfterElementMerging; node = NodeTraversal::next(*node)) { Can we use RefPtr by calling makeRefPtr while we're at it? > Source/WebCore/editing/ApplyStyleCommand.cpp:395 > + // The node tree might change while iterating this loop as surroundNodeRangeWithElement() creates a new node and could I don't think this comment is necessary. It's pretty self evident from the code below. 1732828 4 svillar 2021-02-24 04:54:11 -0800 Committed r273380 (234507@main): <https://commits.webkit.org/234507@main> 419255 2021-02-03 23:57:43 -0800 2021-02-03 23:57:43 -0800 Test repro_504.html text/html 431 rniwa PHN0eWxlPgogIGhlYWQsIHNjcmlwdCwgc3BhbiB7CiAgICBkaXNwbGF5OiBibG9jazsKICB9CiAg aGVhZCB7CiAgICAtd2Via2l0LXVzZXItbW9kaWZ5OiByZWFkLXdyaXRlLXBsYWludGV4dC1vbmx5 OwogIH0KICBzY3JpcHQ6OmZpcnN0LWxldHRlciB7CiAgICAtLWZvbnQtc2l6ZS1jaDogMDsKICB9 Cjwvc3R5bGU+CjxzY3JpcHQ+CiAgICAvLyA8LS0gbWFnaWMgd2hpdGVzcGFjZQpvbmxvYWQgPSAo KSA9PiB7CiAgZG9jdW1lbnQucXVlcnlTZWxlY3Rvcignc2NyaXB0JykuYXBwZW5kQ2hpbGQoZG9j dW1lbnQuY3JlYXRlRWxlbWVudCgnc3BhbicpKTsKICBkb2N1bWVudC5leGVjQ29tbWFuZCgnRmlu ZFN0cmluZycsIGZhbHNlLCAnYScpOwogIGRvY3VtZW50LmV4ZWNDb21tYW5kKCdGb250U2l6ZURl bHRhJywgZmFsc2UsICcxJyk7Cn07Cjwvc2NyaXB0Pgo= 420656 2021-02-17 09:28:03 -0800 2021-02-22 20:06:00 -0800 Patch bug-221393-20210217182801.patch text/plain 5577 svillar 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