149459 2015-09-22 08:12:07 -0700 ASSERTION FAILED: computeMainAxisExtentForChild(child, MainOrPreferredSize, mainSize) in WebCore::RenderFlexibleBox::adjustChildSizeForMinAndMax 2018-09-02 08:50:01 -0700 1 1 1 Unclassified WebKit Layout and Rendering WebKit Local Build Unspecified Unspecified RESOLVED FIXED P2 Normal --- 116980 1 rhodovan.u-szeged svillar commit-queue esprehn+autocc glenn hyatt kondapallykalyan svillar zalan oldest_to_newest 1127999 0 261742 rhodovan.u-szeged 2015-09-22 08:12:07 -0700 Created attachment 261742 Test Load this with debug WebKit: <style> * { flex-direction: column-reverse; display: inline-flex; height: 0%; } </style> <table> <caption> <h2></h2> </caption> </table> Backtrace: ASSERTION FAILED: computeMainAxisExtentForChild(child, MainOrPreferredSize, mainSize) ../../Source/WebCore/rendering/RenderFlexibleBox.cpp(879) : WebCore::LayoutUnit WebCore::RenderFlexibleBox::adjustChildSizeForMinAndMax(WebCore::RenderBox&, WebCore::LayoutUnit) Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7fff8effd700 (LWP 14045)] 0x00007fffec64eab6 in WTFCrash () at ../../Source/WTF/wtf/Assertions.cpp:321 321 *(int *)(uintptr_t)0xbbadbeef = 0; (gdb) bt #0 0x00007fffec64eab6 in WTFCrash () at ../../Source/WTF/wtf/Assertions.cpp:321 #1 0x00007ffff3380357 in WebCore::RenderFlexibleBox::adjustChildSizeForMinAndMax (this=0x7fffd5ba6258, child=..., childSize=...) at ../../Source/WebCore/rendering/RenderFlexibleBox.cpp:879 #2 0x00007ffff3380882 in WebCore::RenderFlexibleBox::computeNextFlexLine (this=0x7fffd5ba6258, orderedChildren=..., preferredMainAxisExtent=..., totalFlexGrow=@0x7fffffffafd0: 0, totalWeightedFlexShrink=@0x7fffffffafd8: 0, minMaxAppliedMainAxisExtent=..., hasInfiniteLineLength=@0x7fffffffaf7f: true) at ../../Source/WebCore/rendering/RenderFlexibleBox.cpp:922 #3 0x00007ffff337f297 in WebCore::RenderFlexibleBox::layoutFlexItems (this=0x7fffd5ba6258, relayoutChildren=false, lineContexts=...) at ../../Source/WebCore/rendering/RenderFlexibleBox.cpp:695 #4 0x00007ffff337d367 in WebCore::RenderFlexibleBox::layoutBlock (this=0x7fffd5ba6258, relayoutChildren=false) at ../../Source/WebCore/rendering/RenderFlexibleBox.cpp:272 #5 0x00007ffff32b5922 in WebCore::RenderBlock::layout (this=0x7fffd5ba6258) at ../../Source/WebCore/rendering/RenderBlock.cpp:926 #6 0x00007ffff327d31f in WebCore::RenderElement::layoutIfNeeded (this=0x7fffd5ba6258) at ../../Source/WebCore/rendering/RenderElement.h:135 #7 0x00007ffff3305a2a in WebCore::RenderBlockFlow::layoutLineBoxes (this=0x7fffd5ba6320, relayoutChildren=true, repaintLogicalTop=..., repaintLogicalBottom=...) at ../../Source/WebCore/rendering/RenderBlockLineLayout.cpp:1642 #8 0x00007ffff32e2ebd in WebCore::RenderBlockFlow::layoutInlineChildren (this=0x7fffd5ba6320, relayoutChildren=true, repaintLogicalTop=..., repaintLogicalBottom=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:651 #9 0x00007ffff32e2203 in WebCore::RenderBlockFlow::layoutBlock (this=0x7fffd5ba6320, relayoutChildren=true, pageLogicalHeight=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:483 #10 0x00007ffff348bb42 in WebCore::RenderTableCell::layout (this=0x7fffd5ba6320) at ../../Source/WebCore/rendering/RenderTableCell.cpp:266 #11 0x00007ffff3494424 in WebCore::RenderTableRow::layout (this=0x7fffd5b95720) at ../../Source/WebCore/rendering/RenderTableRow.cpp:177 #12 0x00007ffff327d31f in WebCore::RenderElement::layoutIfNeeded (this=0x7fffd5b95720) at ../../Source/WebCore/rendering/RenderElement.h:135 #13 0x00007ffff3496a2f in WebCore::RenderTableSection::layout (this=0x7fffd5aea818) at ../../Source/WebCore/rendering/RenderTableSection.cpp:409 #14 0x00007ffff327d31f in WebCore::RenderElement::layoutIfNeeded (this=0x7fffd5aea818) at ../../Source/WebCore/rendering/RenderElement.h:135 #15 0x00007ffff347eab0 in WebCore::RenderTable::layout (this=0x7fffd5ad0000) at ../../Source/WebCore/rendering/RenderTable.cpp:466 #16 0x00007ffff327d31f in WebCore::RenderElement::layoutIfNeeded (this=0x7fffd5ad0000) at ../../Source/WebCore/rendering/RenderElement.h:135 #17 0x00007ffff337df7f in WebCore::RenderFlexibleBox::computeMainAxisExtentForChild (this=0x7fffd5ba6190, child=..., sizeType=WebCore::MinSize, size=...) at ../../Source/WebCore/rendering/RenderFlexibleBox.cpp:457 #18 0x00007ffff338013e in WebCore::RenderFlexibleBox::adjustChildSizeForMinAndMax (this=0x7fffd5ba6190, child=..., childSize=...) at ../../Source/WebCore/rendering/RenderFlexibleBox.cpp:872 #19 0x00007ffff3380882 in WebCore::RenderFlexibleBox::computeNextFlexLine (this=0x7fffd5ba6190, orderedChildren=..., preferredMainAxisExtent=..., totalFlexGrow=@0x7fffffffbdf0: 0, totalWeightedFlexShrink=@0x7fffffffbdf8: 0, minMaxAppliedMainAxisExtent=..., hasInfiniteLineLength=@0x7fffffffbd9f: false) at ../../Source/WebCore/rendering/RenderFlexibleBox.cpp:922 #20 0x00007ffff337f297 in WebCore::RenderFlexibleBox::layoutFlexItems (this=0x7fffd5ba6190, relayoutChildren=true, lineContexts=...) at ../../Source/WebCore/rendering/RenderFlexibleBox.cpp:695 #21 0x00007ffff337d367 in WebCore::RenderFlexibleBox::layoutBlock (this=0x7fffd5ba6190, relayoutChildren=true) at ../../Source/WebCore/rendering/RenderFlexibleBox.cpp:272 #22 0x00007ffff32b5922 in WebCore::RenderBlock::layout (this=0x7fffd5ba6190) at ../../Source/WebCore/rendering/RenderBlock.cpp:926 #23 0x00007ffff327d31f in WebCore::RenderElement::layoutIfNeeded (this=0x7fffd5ba6190) at ../../Source/WebCore/rendering/RenderElement.h:135 #24 0x00007ffff337df7f in WebCore::RenderFlexibleBox::computeMainAxisExtentForChild (this=0x7fffd5be3c80, child=..., sizeType=WebCore::MinSize, size=...) at ../../Source/WebCore/rendering/RenderFlexibleBox.cpp:457 #25 0x00007ffff338013e in WebCore::RenderFlexibleBox::adjustChildSizeForMinAndMax (this=0x7fffd5be3c80, child=..., childSize=...) at ../../Source/WebCore/rendering/RenderFlexibleBox.cpp:872 #26 0x00007ffff3380882 in WebCore::RenderFlexibleBox::computeNextFlexLine (this=0x7fffd5be3c80, orderedChildren=..., preferredMainAxisExtent=..., totalFlexGrow=@0x7fffffffc3b0: 0, totalWeightedFlexShrink=@0x7fffffffc3b8: 0, minMaxAppliedMainAxisExtent=..., hasInfiniteLineLength=@0x7fffffffc35f: false) at ../../Source/WebCore/rendering/RenderFlexibleBox.cpp:922 #27 0x00007ffff337f297 in WebCore::RenderFlexibleBox::layoutFlexItems (this=0x7fffd5be3c80, relayoutChildren=true, lineContexts=...) at ../../Source/WebCore/rendering/RenderFlexibleBox.cpp:695 #28 0x00007ffff337d367 in WebCore::RenderFlexibleBox::layoutBlock (this=0x7fffd5be3c80, relayoutChildren=true) at ../../Source/WebCore/rendering/RenderFlexibleBox.cpp:272 #29 0x00007ffff32b5922 in WebCore::RenderBlock::layout (this=0x7fffd5be3c80) at ../../Source/WebCore/rendering/RenderBlock.cpp:926 #30 0x00007ffff32e3284 in WebCore::RenderBlockFlow::layoutBlockChild (this=0x7fffd5ae8228, child=..., marginInfo=..., previousFloatLogicalBottom=..., maxFloatLogicalBottom=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:709 #31 0x00007ffff32e2dc3 in WebCore::RenderBlockFlow::layoutBlockChildren (this=0x7fffd5ae8228, relayoutChildren=true, maxFloatLogicalBottom=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:632 #32 0x00007ffff32e2227 in WebCore::RenderBlockFlow::layoutBlock (this=0x7fffd5ae8228, relayoutChildren=true, pageLogicalHeight=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:485 #33 0x00007ffff32b5922 in WebCore::RenderBlock::layout (this=0x7fffd5ae8228) at ../../Source/WebCore/rendering/RenderBlock.cpp:926 #34 0x00007ffff34cbc39 in WebCore::RenderView::layoutContent (this=0x7fffd5ae8228, state=...) at ../../Source/WebCore/rendering/RenderView.cpp:253 #35 0x00007ffff34cc32c in WebCore::RenderView::layout (this=0x7fffd5ae8228) at ../../Source/WebCore/rendering/RenderView.cpp:378 #36 0x00007ffff2fe43bd in WebCore::FrameView::layout (this=0x7fffd5811000, allowSubtree=true) at ../../Source/WebCore/page/FrameView.cpp:1409 #37 0x00007ffff29175c6 in WebCore::Document::implicitClose (this=0x7fffd5803000) at ../../Source/WebCore/dom/Document.cpp:2699 #38 0x00007ffff2e79385 in WebCore::FrameLoader::checkCallImplicitClose (this=0x7fffd5aef098) at ../../Source/WebCore/loader/FrameLoader.cpp:891 #39 0x00007ffff2e790bc in WebCore::FrameLoader::checkCompleted (this=0x7fffd5aef098) at ../../Source/WebCore/loader/FrameLoader.cpp:837 #40 0x00007ffff2e78e2c in WebCore::FrameLoader::finishedParsing (this=0x7fffd5aef098) at ../../Source/WebCore/loader/FrameLoader.cpp:758 #41 0x00007ffff29215fa in WebCore::Document::finishedParsing (this=0x7fffd5803000) at ../../Source/WebCore/dom/Document.cpp:4898 #42 0x00007ffff2cccb33 in WebCore::HTMLConstructionSite::finishedParsing (this=0x7fffd5af7920) at ../../Source/WebCore/html/parser/HTMLConstructionSite.cpp:404 #43 0x00007ffff2d0c38a in WebCore::HTMLTreeBuilder::finished (this=0x7fffd5af7900) at ../../Source/WebCore/html/parser/HTMLTreeBuilder.cpp:2937 #44 0x00007ffff2cd5c90 in WebCore::HTMLDocumentParser::end (this=0x7fffd58165c0) at ../../Source/WebCore/html/parser/HTMLDocumentParser.cpp:402 #45 0x00007ffff2cd5d5e in WebCore::HTMLDocumentParser::attemptToRunDeferredScriptsAndEnd (this=0x7fffd58165c0) at ../../Source/WebCore/html/parser/HTMLDocumentParser.cpp:411 #46 0x00007ffff2cd497b in WebCore::HTMLDocumentParser::prepareToStopParsing (this=0x7fffd58165c0) at ../../Source/WebCore/html/parser/HTMLDocumentParser.cpp:132 #47 0x00007ffff2cd5d95 in WebCore::HTMLDocumentParser::attemptToEnd (this=0x7fffd58165c0) at ../../Source/WebCore/html/parser/HTMLDocumentParser.cpp:423 #48 0x00007ffff2cd5e43 in WebCore::HTMLDocumentParser::finish (this=0x7fffd58165c0) at ../../Source/WebCore/html/parser/HTMLDocumentParser.cpp:451 #49 0x00007ffff2e68c78 in WebCore::DocumentWriter::end (this=0x7fffd58360a0) at ../../Source/WebCore/loader/DocumentWriter.cpp:247 #50 0x00007ffff2e5264a in WebCore::DocumentLoader::finishedLoading (this=0x7fffd5836000, finishTime=0) at ../../Source/WebCore/loader/DocumentLoader.cpp:430 #51 0x00007ffff2e523a8 in WebCore::DocumentLoader::notifyFinished (this=0x7fffd5836000, resource=0x7fffd580f9c0) at ../../Source/WebCore/loader/DocumentLoader.cpp:377 #52 0x00007ffff2f10f7d in WebCore::CachedResource::checkNotify (this=0x7fffd580f9c0) at ../../Source/WebCore/loader/cache/CachedResource.cpp:297 #53 0x00007ffff2f1108c in WebCore::CachedResource::finishLoading (this=0x7fffd580f9c0) at ../../Source/WebCore/loader/cache/CachedResource.cpp:313 #54 0x00007ffff2f0d28a in WebCore::CachedRawResource::finishLoading (this=0x7fffd580f9c0, data=0x7fffd5bfde80) at ../../Source/WebCore/loader/cache/CachedRawResource.cpp:103 #55 0x00007ffff2ebd812 in WebCore::SubresourceLoader::didFinishLoading (this=0x7fffd5836c00, finishTime=0) at ../../Source/WebCore/loader/SubresourceLoader.cpp:372 #56 0x00007ffff2eb828b in WebCore::ResourceLoader::didFinishLoading (this=0x7fffd5836c00, finishTime=0) at ../../Source/WebCore/loader/ResourceLoader.cpp:631 #57 0x00007ffff38e70f6 in WebCore::readCallback (asyncResult=0x8dd9b0, data=0x7fffd5bb7300) at ../../Source/WebCore/platform/network/soup/ResourceHandleSoup.cpp:1340 #58 0x00007fffe945796a in async_ready_callback_wrapper (source_object=0xa35db0, res=0x8dd9b0, user_data=0x7fffd5bb7300) at ginputstream.c:529 #59 0x00007fffe947d453 in g_task_return_now (task=0x8dd9b0) at gtask.c:1088 #60 0x00007fffe947d489 in complete_in_idle_cb (task=0x8dd9b0) at gtask.c:1102 #61 0x00007fffe8eb7a9d in g_main_dispatch (context=0x492400) at gmain.c:3122 #62 g_main_context_dispatch (context=context@entry=0x492400) at gmain.c:3737 #63 0x00007fffe8eb7e70 in g_main_context_iterate (context=0x492400, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3808 #64 0x00007fffe8eb8192 in g_main_loop_run (loop=0x5fff50) at gmain.c:4002 #65 0x00007ffff406313f in WTF::RunLoop::run () at ../../Source/WTF/wtf/glib/RunLoopGLib.cpp:67 #66 0x00007ffff2300a23 in WebKit::ChildProcessMain<WebKit::WebProcess, WebKit::WebProcessMain> (argc=2, argv=0x7fffffffd5b8) at ../../Source/WebKit2/Shared/unix/ChildProcessMain.h:61 #67 0x00007ffff2300880 in WebKit::WebProcessMainUnix (argc=2, argv=0x7fffffffd5b8) at ../../Source/WebKit2/WebProcess/gtk/WebProcessMainGtk.cpp:77 #68 0x00000000004008da in main (argc=2, argv=0x7fffffffd5b8) at ../../Source/WebKit2/WebProcess/EntryPoint/unix/WebProcessMain.cpp:44 1132736 1 262980 svillar 2015-10-13 02:05:38 -0700 Created attachment 262980 Patch 1134409 2 262980 darin 2015-10-18 16:45:52 -0700 Comment on attachment 262980 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=262980&action=review > Source/WebCore/rendering/RenderFlexibleBox.cpp:872 > + LayoutUnit contentSize = computeMainAxisExtentForChild(child, MinSize, Length(MinContent)).value(); What guarantees Optional<LayoutSize> is never null? > Source/WebCore/rendering/RenderFlexibleBox.cpp:878 > + LayoutUnit resolvedMainSize = computeMainAxisExtentForChild(child, MainOrPreferredSize, mainSize).value(); Ditto. 1134410 3 262980 darin 2015-10-18 16:46:20 -0700 Comment on attachment 262980 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=262980&action=review >> Source/WebCore/rendering/RenderFlexibleBox.cpp:872 >> + LayoutUnit contentSize = computeMainAxisExtentForChild(child, MinSize, Length(MinContent)).value(); > > What guarantees Optional<LayoutSize> is never null? I guess the old code was asserting it, and the new code does too, just in a different way. 1134835 4 svillar 2015-10-20 02:47:23 -0700 (In reply to comment #3) > Comment on attachment 262980 [details] > Patch > > View in context: > https://bugs.webkit.org/attachment.cgi?id=262980&action=review > > >> Source/WebCore/rendering/RenderFlexibleBox.cpp:872 > >> + LayoutUnit contentSize = computeMainAxisExtentForChild(child, MinSize, Length(MinContent)).value(); > > > > What guarantees Optional<LayoutSize> is never null? > > I guess the old code was asserting it, and the new code does too, just in a > different way. Correct. 1134840 5 svillar 2015-10-20 02:58:09 -0700 Committed r191336: <http://trac.webkit.org/changeset/191336> 1456037 6 zalan 2018-09-02 08:50:01 -0700 (In reply to Sergio Villar Senin from comment #4) > (In reply to comment #3) > > Comment on attachment 262980 [details] > > Patch > > > > View in context: > > https://bugs.webkit.org/attachment.cgi?id=262980&action=review > > > > >> Source/WebCore/rendering/RenderFlexibleBox.cpp:872 > > >> + LayoutUnit contentSize = computeMainAxisExtentForChild(child, MinSize, Length(MinContent)).value(); > > > > > > What guarantees Optional<LayoutSize> is never null? > > > > I guess the old code was asserting it, and the new code does too, just in a > > different way. > > Correct. I don't see how this was correct in the original commit. It does not seem to be guaranteed that computeMainAxisExtentForChild() always returns with a valid value (see webkit.org/b/189232) 261742 2015-09-22 08:12:07 -0700 2015-09-22 08:12:07 -0700 Test crash.html text/html 164 rhodovan.u-szeged PHN0eWxlPgoqIHsKICAgIGZsZXgtZGlyZWN0aW9uOiBjb2x1bW4tcmV2ZXJzZTsKICAgIGRpc3Bs YXk6IGlubGluZS1mbGV4OwogICAgaGVpZ2h0OiAwJTsKfQo8L3N0eWxlPgo8dGFibGU+CiAgICA8 Y2FwdGlvbj4KICAgICAgICA8aDI+PC9oMj4KICAgIDwvY2FwdGlvbj4KPC90YWJsZT4= 262980 2015-10-13 02:05:38 -0700 2015-10-18 16:45:52 -0700 Patch bug-149459-20151013110501.patch text/plain 5055 svillar U3VidmVyc2lvbiBSZXZpc2lvbjogMTkwNzg0CmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViQ29yZS9D aGFuZ2VMb2cgYi9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKaW5kZXggYWFiN2Q5MGVlOTYwYjg4 OGMxOTE3ZWExMDFhNTcyZDEyMGMzMjQ5OS4uNzdhM2QxNmZiNDIxNWNjOGYyMTg4M2IxMTNiODU3 ZmFhOWI3NTBiZCAxMDA2NDQKLS0tIGEvU291cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCisrKyBiL1Nv dXJjZS9XZWJDb3JlL0NoYW5nZUxvZwpAQCAtMSwzICsxLDIxIEBACisyMDE1LTEwLTEzICBTZXJn 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