[Webkit-unassigned] [Bug 133539] New: ASSERTION FAILED: !childBox.isRenderFlowThread() in WebCore::canComputeRegionRangeForBox

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Jun 5 01:31:36 PDT 2014 

https://bugs.webkit.org/show_bug.cgi?id=133539

           Summary: ASSERTION FAILED: !childBox.isRenderFlowThread() in
                    WebCore::canComputeRegionRangeForBox
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: rhodovan.u-szeged at partner.samsung.com
                CC: zalan at apple.com, mihnea at adobe.com, abucur at adobe.com
            Blocks: 116980


Created an attachment (id=232529)
 --> (https://bugs.webkit.org/attachment.cgi?id=232529&action=review)
Test case

Assertion failure happens when loading the test case below. The crash works with any tags (not only with <input>), the only thing that the value of -webkit-column-count has to be greater than 1.

<style>

*   { 
    -webkit-column-count:2;
}

</style>
<input>

Backtrace:

ASSERTION FAILED: !childBox.isRenderFlowThread()
../../Source/WebCore/rendering/RenderBlock.cpp(3923) : bool WebCore::canComputeRegionRangeForBox(const WebCore::RenderBlock*, const WebCore::RenderBox&, const WebCore::RenderFlowThread*)

...

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff9732a700 (LWP 17076)]
0x00007ffff30ac8ec in WTFCrash () at ../../Source/WTF/wtf/Assertions.cpp:333
333        *(int *)(uintptr_t)0xbbadbeef = 0;
(gdb) bt
#0  0x00007ffff30ac8ec in WTFCrash () at ../../Source/WTF/wtf/Assertions.cpp:333
#1  0x00007ffff3dd4f67 in WebCore::canComputeRegionRangeForBox (parentBlock=0x8e0c30, childBox=..., flowThreadContainingBlock=0x870030)
    at ../../Source/WebCore/rendering/RenderBlock.cpp:3923
#2  0x00007ffff3dd52b4 in WebCore::RenderBlock::estimateRegionRangeForBoxChild (this=0x8e0c30, box=...)
    at ../../Source/WebCore/rendering/RenderBlock.cpp:3969
#3  0x00007ffff3df19f6 in WebCore::RenderBlockFlow::layoutBlockChild (this=0x8e0c30, child=..., marginInfo=..., previousFloatLogicalBottom=..., 
    maxFloatLogicalBottom=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:678
#4  0x00007ffff3df17c8 in WebCore::RenderBlockFlow::layoutBlockChildren (this=0x8e0c30, relayoutChildren=true, maxFloatLogicalBottom=...)
    at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:632
#5  0x00007ffff3df0cc6 in WebCore::RenderBlockFlow::layoutBlock (this=0x8e0c30, relayoutChildren=true, pageLogicalHeight=...)
    at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:485
#6  0x00007ffff3f88b45 in WebCore::RenderTextControlSingleLine::layout (this=0x8e0c30)
    at ../../Source/WebCore/rendering/RenderTextControlSingleLine.cpp:140
#7  0x00007ffff3d94369 in WebCore::RenderElement::layoutIfNeeded (this=0x8e0c30) at ../../Source/WebCore/rendering/RenderElement.h:101
#8  0x00007ffff3e0d418 in WebCore::RenderBlockFlow::layoutLineBoxes (this=0x870030, relayoutChildren=false, repaintLogicalTop=..., 
    repaintLogicalBottom=...) at ../../Source/WebCore/rendering/RenderBlockLineLayout.cpp:1440
#9  0x00007ffff3df18bc in WebCore::RenderBlockFlow::layoutInlineChildren (this=0x870030, relayoutChildren=false, repaintLogicalTop=..., 
    repaintLogicalBottom=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:652
#10 0x00007ffff3df0ca2 in WebCore::RenderBlockFlow::layoutBlock (this=0x870030, relayoutChildren=false, pageLogicalHeight=...)
    at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:483
#11 0x00007ffff3dc6e7b in WebCore::RenderBlock::layout (this=0x870030) at ../../Source/WebCore/rendering/RenderBlock.cpp:1018
#12 0x00007ffff3e7c6bf in WebCore::RenderFlowThread::layout (this=0x870030) at ../../Source/WebCore/rendering/RenderFlowThread.cpp:201
#13 0x00007ffff3f16226 in WebCore::RenderMultiColumnFlowThread::layout (this=0x870030)
    at ../../Source/WebCore/rendering/RenderMultiColumnFlowThread.cpp:135
#14 0x00007ffff3dff2e8 in WebCore::RenderBlockFlow::layoutSpecialExcludedChild (this=0xa0f250, relayoutChildren=true)
    at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:3613
#15 0x00007ffff3df16a6 in WebCore::RenderBlockFlow::layoutBlockChildren (this=0xa0f250, relayoutChildren=true, maxFloatLogicalBottom=...)
    at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:604
#16 0x00007ffff3df0cc6 in WebCore::RenderBlockFlow::layoutBlock (this=0xa0f250, relayoutChildren=true, pageLogicalHeight=...)
    at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:485
#17 0x00007ffff3dc6e7b in WebCore::RenderBlock::layout (this=0xa0f250) at ../../Source/WebCore/rendering/RenderBlock.cpp:1018
#18 0x00007ffff3df1c86 in WebCore::RenderBlockFlow::layoutBlockChild (this=0x9f2330, child=..., marginInfo=..., previousFloatLogicalBottom=..., 
    maxFloatLogicalBottom=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:713
#19 0x00007ffff3df17c8 in WebCore::RenderBlockFlow::layoutBlockChildren (this=0x9f2330, relayoutChildren=false, maxFloatLogicalBottom=...)
    at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:632
#20 0x00007ffff3df0cc6 in WebCore::RenderBlockFlow::layoutBlock (this=0x9f2330, relayoutChildren=false, pageLogicalHeight=...)
    at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:485
#21 0x00007ffff3dc6e7b in WebCore::RenderBlock::layout (this=0x9f2330) at ../../Source/WebCore/rendering/RenderBlock.cpp:1018
#22 0x00007ffff3e7c6bf in WebCore::RenderFlowThread::layout (this=0x9f2330) at ../../Source/WebCore/rendering/RenderFlowThread.cpp:201
#23 0x00007ffff3f16226 in WebCore::RenderMultiColumnFlowThread::layout (this=0x9f2330)
    at ../../Source/WebCore/rendering/RenderMultiColumnFlowThread.cpp:135
#24 0x00007ffff3dff2e8 in WebCore::RenderBlockFlow::layoutSpecialExcludedChild (this=0x844cb0, relayoutChildren=true)
    at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:3613
#25 0x00007ffff3df16a6 in WebCore::RenderBlockFlow::layoutBlockChildren (this=0x844cb0, relayoutChildren=true, maxFloatLogicalBottom=...)
    at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:604
#26 0x00007ffff3df0cc6 in WebCore::RenderBlockFlow::layoutBlock (this=0x844cb0, relayoutChildren=true, pageLogicalHeight=...)
    at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:485
#27 0x00007ffff3dc6e7b in WebCore::RenderBlock::layout (this=0x844cb0) at ../../Source/WebCore/rendering/RenderBlock.cpp:1018
#28 0x00007ffff3df1c86 in WebCore::RenderBlockFlow::layoutBlockChild (this=0x87a370, child=..., marginInfo=..., previousFloatLogicalBottom=..., 
    maxFloatLogicalBottom=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:713
#29 0x00007ffff3df17c8 in WebCore::RenderBlockFlow::layoutBlockChildren (this=0x87a370, relayoutChildren=true, maxFloatLogicalBottom=...)
    at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:632
#30 0x00007ffff3df0cc6 in WebCore::RenderBlockFlow::layoutBlock (this=0x87a370, relayoutChildren=true, pageLogicalHeight=...)
    at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:485
#31 0x00007ffff3dc6e7b in WebCore::RenderBlock::layout (this=0x87a370) at ../../Source/WebCore/rendering/RenderBlock.cpp:1018
---Type <return> to continue, or q <return> to quit---
#32 0x00007ffff3f9967f in WebCore::RenderView::layoutContent (this=0x87a370, state=...) at ../../Source/WebCore/rendering/RenderView.cpp:229
#33 0x00007ffff3f99d38 in WebCore::RenderView::layout (this=0x87a370) at ../../Source/WebCore/rendering/RenderView.cpp:354
#34 0x00007ffff3b541a0 in WebCore::FrameView::layout (this=0x8783e0, allowSubtree=true) at ../../Source/WebCore/page/FrameView.cpp:1274
#35 0x00007ffff35c3165 in WebCore::Document::implicitClose (this=0x87a6c0) at ../../Source/WebCore/dom/Document.cpp:2432
#36 0x00007ffff3a24337 in WebCore::FrameLoader::checkCallImplicitClose (this=0x988898) at ../../Source/WebCore/loader/FrameLoader.cpp:895
#37 0x00007ffff3a240e2 in WebCore::FrameLoader::checkCompleted (this=0x988898) at ../../Source/WebCore/loader/FrameLoader.cpp:841
#38 0x00007ffff3a23e6a in WebCore::FrameLoader::finishedParsing (this=0x988898) at ../../Source/WebCore/loader/FrameLoader.cpp:761
#39 0x00007ffff35cab8d in WebCore::Document::finishedParsing (this=0x87a6c0) at ../../Source/WebCore/dom/Document.cpp:4489
#40 0x00007ffff38c2133 in WebCore::HTMLConstructionSite::finishedParsing (this=0x8793b8)
    at ../../Source/WebCore/html/parser/HTMLConstructionSite.cpp:395
#41 0x00007ffff38fac8f in WebCore::HTMLTreeBuilder::finished (this=0x8793a0) at ../../Source/WebCore/html/parser/HTMLTreeBuilder.cpp:2997
#42 0x00007ffff38c9bbe in WebCore::HTMLDocumentParser::end (this=0x8f0b80) at ../../Source/WebCore/html/parser/HTMLDocumentParser.cpp:439
#43 0x00007ffff38c9ca9 in WebCore::HTMLDocumentParser::attemptToRunDeferredScriptsAndEnd (this=0x8f0b80)
    at ../../Source/WebCore/html/parser/HTMLDocumentParser.cpp:450
#44 0x00007ffff38c88f3 in WebCore::HTMLDocumentParser::prepareToStopParsing (this=0x8f0b80)
    at ../../Source/WebCore/html/parser/HTMLDocumentParser.cpp:165
#45 0x00007ffff38c9cec in WebCore::HTMLDocumentParser::attemptToEnd (this=0x8f0b80) at ../../Source/WebCore/html/parser/HTMLDocumentParser.cpp:462
#46 0x00007ffff38c9da3 in WebCore::HTMLDocumentParser::finish (this=0x8f0b80) at ../../Source/WebCore/html/parser/HTMLDocumentParser.cpp:490
#47 0x00007ffff3a17053 in WebCore::DocumentWriter::end (this=0x99c000) at ../../Source/WebCore/loader/DocumentWriter.cpp:248
#48 0x00007ffff3a04423 in WebCore::DocumentLoader::finishedLoading (this=0x99bf60, finishTime=0) at ../../Source/WebCore/loader/DocumentLoader.cpp:440
#49 0x00007ffff3a0418c in WebCore::DocumentLoader::notifyFinished (this=0x99bf60, resource=0x84e430)
    at ../../Source/WebCore/loader/DocumentLoader.cpp:374
#50 0x00007ffff3aaabc2 in WebCore::CachedResource::checkNotify (this=0x84e430) at ../../Source/WebCore/loader/cache/CachedResource.cpp:332
#51 0x00007ffff3aaaca0 in WebCore::CachedResource::finishLoading (this=0x84e430) at ../../Source/WebCore/loader/cache/CachedResource.cpp:348
#52 0x00007ffff3aa7a14 in WebCore::CachedRawResource::finishLoading (this=0x84e430, data=0x83a640)
    at ../../Source/WebCore/loader/cache/CachedRawResource.cpp:97
#53 0x00007ffff3a5e3b4 in WebCore::SubresourceLoader::didFinishLoading (this=0x825c90, finishTime=0)
    at ../../Source/WebCore/loader/SubresourceLoader.cpp:310
#54 0x00007ffff3a5a8d7 in WebCore::ResourceLoader::didFinishLoading (this=0x825c90, finishTime=0)
    at ../../Source/WebCore/loader/ResourceLoader.cpp:517
#55 0x00007ffff43071e9 in WebCore::readCallback (asyncResult=0x8419b0, data=0x84e8c0)
    at ../../Source/WebCore/platform/network/soup/ResourceHandleSoup.cpp:1288
#56 0x00007fffec2c02ea in async_ready_callback_wrapper (source_object=0x98cb30, res=0x8419b0, user_data=0x84e8c0) at ginputstream.c:519
#57 0x00007fffec2dfceb in g_task_return_now (task=0x8419b0) at gtask.c:1108
#58 0x00007fffec2dfd09 in complete_in_idle_cb (task=0x8419b0) at gtask.c:1117
#59 0x00007fffeb5362e6 in g_main_dispatch (context=0x677bb0) at gmain.c:3065
#60 g_main_context_dispatch (context=context at entry=0x677bb0) at gmain.c:3641
#61 0x00007fffeb536638 in g_main_context_iterate (context=0x677bb0, block=block at entry=1, dispatch=dispatch at entry=1, self=<optimized out>)
    at gmain.c:3712
#62 0x00007fffeb536a3a in g_main_loop_run (loop=0x913eb0) at gmain.c:3906
#63 0x00007ffff30fd900 in WTF::RunLoop::run () at ../../Source/WTF/wtf/gtk/RunLoopGtk.cpp:59
#64 0x00007ffff303a194 in WebKit::ChildProcessMain<WebKit::WebProcess, WebKit::WebProcessMain> (argc=2, argv=0x7fffffffda58)
    at ../../Source/WebKit2/Shared/unix/ChildProcessMain.h:61
#65 0x00007ffff3039ff9 in WebKit::WebProcessMainUnix (argc=2, argv=0x7fffffffda58) at ../../Source/WebKit2/WebProcess/gtk/WebProcessMainGtk.cpp:73
#66 0x000000000040085d in main (argc=2, argv=0x7fffffffda58) at ../../Source/WebKit2/WebProcess/EntryPoint/unix/WebProcessMain.cpp:32

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