69511 2011-10-06 03:43:05 -0700 [Qt] REGRESSION(r96779): It made svg/as-image/svg-nested.html timeout 2012-05-25 00:19:55 -0700 1 1 1 Unclassified WebKit SVG 528+ (Nightly build) All All RESOLVED INVALID Qt, QtTriaged P1 Critical --- 30225 79666 79668 1 ossy webkit-unassigned abarth ap arv cevans darin kbalazs lauro.neto ossy rhodovan.u-szeged webkit-sed zherczeg zimmermann oldest_to_newest 479044 0 ossy 2011-10-06 03:43:05 -0700 After http://trac.webkit.org/changeset/96779 this test always fails with timeout: http://build.webkit.org/results/Qt%20Linux%20Release/r96779%20%2838208%29/results.html 479207 1 arv 2011-10-06 09:34:58 -0700 The data URL for the SVG image now contains <a><a>...</a></a>. This used to be URL encoded. Does Qt do something different for SVG images than other ports? 479212 2 ossy 2011-10-06 09:38:50 -0700 This test introduced in http://trac.webkit.org/changeset/57263/trunk/LayoutTests/fast/images/svg-nested.html . (Chris or Adam, have you got any idea?) 479218 3 abarth 2011-10-06 09:43:45 -0700 We can URL encode them in the test, if that would be helpful. The intent of that test is to create a very deeply nested DOM in the SVG image. 479220 4 abarth 2011-10-06 09:44:03 -0700 (and to check that we don't crash when that happens) 479224 5 arv 2011-10-06 09:48:37 -0700 There should be no need to URL encode this data URL. FYI: It does not time out on other ports and Qurl passes other tests that have markup (html) in a data URL. 479226 6 arv 2011-10-06 09:50:45 -0700 I'll get the Qt port building on my machine so I can track this down 481944 7 arv 2011-10-11 14:57:16 -0700 Here is a stack trace #0 _wordcopy_fwd_dest_aligned (dstp=16305872, srcp=16305888, len=11580) at wordcopy.c:197 #1 0x00007ffff149873e in memmove (dest=0xf81db0, src=<value optimized out>, len=137996) at memmove.c:73 #2 0x00007ffff21f2474 in QByteArray::remove(int, int) () from /usr/local/Trolltech/Qt-4.7.4/lib/libQtCore.so.4 #3 0x00007ffff21f3f50 in QByteArray::replace(int, int, char const*, int) () from /usr/local/Trolltech/Qt-4.7.4/lib/libQtCore.so.4 #4 0x00007ffff229ae86 in QUrl::setEncodedUrl(QByteArray const&, QUrl::ParsingMode) () from /usr/local/Trolltech/Qt-4.7.4/lib/libQtCore.so.4 #5 0x00007ffff229b6a6 in QUrl::fromEncoded(QByteArray const&) () from /usr/local/Trolltech/Qt-4.7.4/lib/libQtCore.so.4 #6 0x00007ffff605acf5 in WebCore::KURL::operator QUrl (this=0xc0cf08) at ../../../Source/WebCore/platform/qt/KURLQt.cpp:40 #7 0x00007ffff6041409 in WebCore::ResourceRequest::toNetworkRequest (this=0xc0cf08, originatingFrame=0x94f0b0) at ../../../Source/WebCore/platform/network/qt/ResourceRequestQt.cpp:87 #8 0x00007ffff6045d47 in WebCore::QNetworkReplyHandler::QNetworkReplyHandler (this=0xc0c040, handle=0xc0aa20, loadType=WebCore::QNetworkReplyHandler::AsynchronousLoad, deferred=false) at ../../../Source/WebCore/platform/network/qt/QNetworkReplyHandler.cpp:402 #9 0x00007ffff604074f in WebCore::ResourceHandle::start (this=0xc0aa20, context=0x985ff0) at ../../../Source/WebCore/platform/network/qt/ResourceHandleQt.cpp:112 #10 0x00007ffff5e22955 in WebCore::ResourceHandle::create (context=0x985ff0, request=..., client=0xc0b8e0, defersLoading=false, shouldContentSniff=true) at ../../../Source/WebCore/platform/network/ResourceHandle.cpp:71 536714 8 ap 2012-01-16 12:47:45 -0800 Any update on why this is happening? 547969 9 ossy 2012-02-02 10:34:53 -0800 It is still valid. Any volunteer to pick it up? 626450 10 ossy 2012-05-17 04:34:29 -0700 Still valid now. Zoltán? AFAIK, you are searching a good debugging thing. :) It is debugging and SVG too. ;) 633249 11 lauro.neto 2012-05-24 14:41:07 -0700 Using latest WebKit revision this test takes 10s on average running on Qt4 and under 1s on Qt5 (both WK1/WK2). Wouldn't it be better to move it to "qt-4.8" skip list instead of "qt"? 633272 12 kbalazs 2012-05-24 14:59:45 -0700 (In reply to comment #11) > Using latest WebKit revision this test takes 10s on average running on Qt4 and under 1s on Qt5 (both WK1/WK2). Wouldn't it be better to move it to "qt-4.8" skip list instead of "qt"? Best would be to fix it for Qt4, but if it's non-trivial and there is no volunteer for the task I support skipping it on Qt4. 633628 13 ossy 2012-05-25 00:07:18 -0700 I think I got the root of the problem. http://trac.webkit.org/changeset/114240 made QtWebKit use libxml instead of QtXmlPatterns, but for only Qt 5. It seems QtXmlPatterns are very very slow, but libxml is quite fast. 633636 14 ossy 2012-05-25 00:13:17 -0700 Oh, I didn't see Comment7, it isn't libxml/QtXmlPatterns related, but QUrl related thing. But I don't think if anybody will fix it in Qt 4.8. (maybe Digia for commercial users) But this test works fine on Qt 4.8 too, but it is very slow. So I marked it as SLOW - r118485. And the bug isn't in WebKit, but in Qt 4.8, so we can close it. 633639 15 ossy 2012-05-25 00:19:55 -0700 Qt bug report, maybe somebody is interested in fixing it - https://bugreports.qt-project.org/browse/QTBUG-25907