7048 2006-02-03 04:11:08 -0800 Reproducible crash when onscroll handler deletes the layer or its object 2006-04-13 01:13:27 -0700 1 1 1 Unclassified WebKit Layout and Rendering 420+ Mac OS X 10.4 RESOLVED FIXED http://www.telephone.ru/mobile/?g_g=1&tree=2,7805 HasReduction P1 Normal --- 1 webkit-bugs darin mitz oldest_to_newest 31149 0 webkit-bugs 2006-02-03 04:11:08 -0800 Visit the page above and it'll crash. The line in the log seems to be off from the line in the source. Date/Time: 2006-02-03 05:04:48.121 -0700 OS Version: 10.4.4 (Build 8G32) Report Version: 3 Command: Safari Path: /Applications/Safari.app/Contents/MacOS/Safari Parent: tcsh [425] Version: 2.0.3 (417.8) Build Version: 1 Project Name: WebBrowser Source Version: 4170800 PID: 21114 Thread: 0 Exception: EXC_BAD_ACCESS (0x0001) Codes: KERN_PROTECTION_FAILURE (0x0002) at 0x00000000 Thread 0 Crashed: 0 <<00000000>> 0x00000000 0 + 0 1 com.apple.WebCore 0x01a75a98 WebCore::RenderLayer::scrollToOffset(int, int, bool, bool) + 316 (render_layer.cpp:573) 2 com.apple.WebCore 0x01836098 KJS::DOMNode::putValueProperty(KJS::ExecState*, int, KJS::JSValue*, int) + 1800 (render_layer.h:244) 3 com.apple.WebCore 0x01857774 KJS::HTMLElement::put(KJS::ExecState*, KJS::Identifier const&, KJS::JSValue*, int) + 488 (lookup.h:238) 4 com.apple.JavaScriptCore 0x01029200 KJS::AssignDotNode::evaluate(KJS::ExecState*) + 1260 (nodes.cpp:1372) 5 com.apple.JavaScriptCore 0x0102ddfc KJS::ExprStatementNode::execute(KJS::ExecState*) + 104 (nodes.cpp:1629) 6 com.apple.JavaScriptCore 0x01030f64 KJS::SourceElementsNode::execute(KJS::ExecState*) + 480 (completion.h:53) 7 com.apple.JavaScriptCore 0x0102dd38 KJS::BlockNode::execute(KJS::ExecState*) + 156 (nodes.cpp:1605) 8 com.apple.JavaScriptCore 0x0101f464 KJS::InterpreterImp::evaluate(KJS::UChar const*, int, KJS::JSValue*, KJS::UString const&, int) + 820 (completion.h:48) 9 com.apple.JavaScriptCore 0x01022630 KJS::Interpreter::evaluate(KJS::UString const&, int, KJS::UChar const*, int, KJS::JSValue*) + 68 (interpreter.cpp:121) 10 com.apple.WebCore 0x01860cfc WebCore::KJSProxyImpl::evaluate(WebCore::DOMString const&, int, WebCore::DOMString const&, WebCore::NodeImpl*) + 272 (RefPtr.h:41) 11 com.apple.WebCore 0x01993390 WebCore::Frame::executeScript(QString const&, int, WebCore::NodeImpl*, QString const&) + 100 (RefPtr.h:41) 12 com.apple.WebCore 0x0189b960 WebCore::HTMLTokenizer::scriptExecution(QString const&, WebCore::HTMLTokenizer::State, QString, int) + 324 (htmltokenizer.cpp:490) 13 com.apple.WebCore 0x0189c360 WebCore::HTMLTokenizer::scriptHandler(WebCore::HTMLTokenizer::State) + 1384 (htmltokenizer.cpp:420) 14 com.apple.WebCore 0x0189c69c WebCore::HTMLTokenizer::parseSpecial(WebCore::SegmentedString&, WebCore::HTMLTokenizer::State) + 564 (htmltokenizer.cpp:286) 15 com.apple.WebCore 0x0189e474 WebCore::HTMLTokenizer::parseTag(WebCore::SegmentedString&, WebCore::HTMLTokenizer::State) + 6432 (htmltokenizer.cpp:1257) 16 com.apple.WebCore 0x0189eb0c WebCore::HTMLTokenizer::write(WebCore::SegmentedString const&, bool) + 908 (htmltokenizer.cpp:1460) 17 com.apple.WebCore 0x0189bd10 WebCore::HTMLTokenizer::notifyFinished(WebCore::CachedObject*) + 644 (KWQValueList.h:88) 18 com.apple.WebCore 0x019d9c04 WebCore::CachedScript::checkNotify() + 80 (CachedScript.cpp:111) 19 com.apple.WebCore 0x019d9d30 WebCore::CachedScript::data(QBuffer&, bool) + 232 (CachedScript.cpp:103) 20 com.apple.WebCore 0x019dc2f8 WebCore::Loader::slotFinished(KIO::Job*, NSData*) + 432 (loader.cpp:151) 21 com.apple.WebCore 0x018bbe2c KWQSignal::callWithData(KIO::Job*, NSData*) const + 140 (KWQValueListImpl.h:150) 22 com.apple.WebCore 0x018be5c4 -[KWQResourceLoader finishJobAndHandle:] + 80 (KWQResourceLoader.mm:95) 23 com.apple.WebKit 0x00323bc4 -[WebSubresourceLoader didFinishLoading] + 80 (WebSubresourceLoader.m:218) 24 com.apple.WebKit 0x0032b290 -[WebLoader connectionDidFinishLoading:] + 44 (WebLoader.m:663) 25 com.apple.Foundation 0x92918cdc -[NSURLConnection(NSURLConnectionInternal) _sendDidFinishLoadingCallback] + 188 26 com.apple.Foundation 0x92916f48 -[NSURLConnection(NSURLConnectionInternal) _sendCallbacks] + 556 27 com.apple.Foundation 0x92916ca0 _sendCallbacks + 156 28 com.apple.CoreFoundation 0x9075da68 __CFRunLoopDoSources0 + 384 29 com.apple.CoreFoundation 0x9075cf98 __CFRunLoopRun + 452 30 com.apple.CoreFoundation 0x9075ca18 CFRunLoopRunSpecific + 268 31 com.apple.HIToolbox 0x9318e1e0 RunCurrentEventLoopInMode + 264 32 com.apple.HIToolbox 0x9318d874 ReceiveNextEventCommon + 380 33 com.apple.HIToolbox 0x9318d6e0 BlockUntilNextEventMatchingListInMode + 96 34 com.apple.AppKit 0x9368c104 _DPSNextEvent + 384 35 com.apple.AppKit 0x9368bdc8 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 116 36 com.apple.Safari 0x000072d4 0x1000 + 25300 37 com.apple.AppKit 0x9368830c -[NSApplication run] + 472 38 com.apple.AppKit 0x93778e68 NSApplicationMain + 452 39 com.apple.Safari 0x0005cfdc 0x1000 + 376796 40 com.apple.Safari 0x0005ce80 0x1000 + 376448 31150 1 mitz 2006-02-03 05:15:14 -0800 Confirmed in WebKit-417.9 and in TOT. Reproducible crashes are P1. 31164 2 6219 mitz 2006-02-03 07:28:23 -0800 Created attachment 6219 Testcase (scroll to crash) The problem is that RenderLayer::scrollToOffset calls the onscroll handler, which may delete the renderer (and the layer!). 31259 3 darin 2006-02-03 21:12:07 -0800 I've got a fix in the works. 31306 4 6247 darin 2006-02-04 09:26:47 -0800 Created attachment 6247 first cut at a patch: needs test cases Here's a patch that fixes the problem. Unfortunately while fixing this one I noticed many other similar problems that are not as easy to fix. Also, I did not come up with automated layout test for this, but I think it's possible to make one and we should do that before reviewing and landing the fix. 31399 5 6260 darin 2006-02-05 00:05:58 -0800 Created attachment 6260 patch to fix the problem, including change log and test 39120 6 mitz 2006-04-13 01:13:27 -0700 (In reply to comment #4) > Unfortunately while fixing this one I > noticed many other similar problems that are not as easy to fix. Opened bug 8360 to track the remaining problems. 6219 2006-02-03 07:28:23 -0800 2006-02-03 07:28:23 -0800 Testcase (scroll to crash) 7048 onscroll crash.html text/html 121 mitz PGRpdiBzdHlsZT0iaGVpZ2h0OiAxMDAlOyBvdmVyZmxvdzogYXV0bzsiIG9uc2Nyb2xsPSJzdHls ZS5kaXNwbGF5ID0gJ25vbmUnIj4KPGRpdiBzdHlsZT0iaGVpZ2h0OiAyMDAwcHg7Ij48L2Rpdj4K PC9kaXY+Cg== 6247 2006-02-04 09:26:47 -0800 2006-02-05 00:05:58 -0800 first cut at a patch: needs test cases ScrollPatch.txt text/plain 2481 darin SW5kZXg6IHJlbmRlcmluZy9yZW5kZXJfbGF5ZXIuY3BwCj09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT0KLS0tIHJlbmRlcmlu Zy9yZW5kZXJfbGF5ZXIuY3BwCShyZXZpc2lvbiAxMjU1NSkKKysrIHJlbmRlcmluZy9yZW5kZXJf bGF5ZXIuY3BwCSh3b3JraW5nIGNvcHkpCkBAIC0xMDUsOCArMTA1LDcgQEAKICAgICByZW5kZXJB cmVuYS0+ZnJlZSgqKHNpemVfdCAqKXRoaXMsIHRoaXMpOwogfQogCi12b2lkCi1SZW5kZXJTY3Jv bGxNZWRpYXRvcjo6c2xvdFZhbHVlQ2hhbmdlZChpbnQgdmFsKQordm9pZCBSZW5kZXJTY3JvbGxN 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