RESOLVED FIXED 50722
[chromium] DRT inspector layout tests are flaky in debug 
https://bugs.webkit.org/show_bug.cgi?id=50722
Summary [chromium] DRT inspector layout tests are flaky in debug
Tony Chang
Reported 2010-12-08 16:29:50 PST
We're getting random crashes in with DRT in debug on the Windows bots in inspector tests. We didn't have this problem with test_shell. I've been trying to repro locally and have only gotten one stack trace. It's not obvious to me what's the cause yet. Maybe we're running a Task after the page has been unloaded? Backtrace: WebCore::CSSStyleDeclaration::getPropertyValue [0x0195D92C+76] (c:\src\chrome\src\third_party\webkit\webcore\css\cssstyledeclaration.cpp:53) WebCore::InspectorStyle::buildObjectForStyle [0x01C83DF7+215] (c:\src\chrome\src\third_party\webkit\webcore\inspector\inspectorstylesheet.cpp:141) WebCore::InspectorStyleSheet::buildObjectForStyle [0x01C87D2A+442] (c:\src\chrome\src\third_party\webkit\webcore\inspector\inspectorstylesheet.cpp:739) WebCore::InspectorCSSAgent::getStylesForNode2 [0x01ADCDFA+170] (c:\src\chrome\src\third_party\webkit\webcore\inspector\inspectorcssagent.cpp:186) WebCore::InspectorBackendDispatcher::getStylesForNode2 [0x023767B7+311] (c:\src\chrome\src\webkit\debug\obj\global_intermediate\webcore\inspectorbackenddispatcher.cpp:1762) WebCore::InspectorBackendDispatcher::dispatch [0x0237EDAE+8110] (c:\src\chrome\src\webkit\debug\obj\global_intermediate\webcore\inspectorbackenddispatcher.cpp:2678) WebKit::WebDevToolsAgentImpl::dispatchOnInspectorBackend [0x0108AFFD+61] (c:\src\chrome\src\third_party\webkit\webkit\chromium\src\webdevtoolsagentimpl.cpp:241) DRTDevToolsAgent::call [0x00BAE56C+60] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\drtdevtoolsagent.cpp:96) DRTDevToolsAgent::AsyncCallTask::runIfValid [0x00BAE450+32] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\drtdevtoolsagent.h:88) MethodTask<DRTDevToolsAgent>::run [0x00BAEB27+39] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\task.h:72) invokeTask [0x00BA8E1C+44] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\task.cpp:61) DispatchToFunction<void (__cdecl*)(void *),void *> [0x00F6DE1F+15] (c:\src\chrome\src\base\tuple.h:614) RunnableFunction<void (__cdecl*)(void *),Tuple1<void *> >::Run [0x00F6DD2A+42] (c:\src\chrome\src\base\task.h:441) MessageLoop::RunTask [0x021ED8C0+272] (c:\src\chrome\src\base\message_loop.cc:423) MessageLoop::DeferOrRunPendingTask [0x021ED9F5+53] (c:\src\chrome\src\base\message_loop.cc:435) MessageLoop::DoWork [0x021EDF4C+236] (c:\src\chrome\src\base\message_loop.cc:539) base::MessagePumpForUI::DoRunLoop [0x02239564+84] (c:\src\chrome\src\base\message_pump_win.cc:201) base::MessagePumpWin::RunWithDispatcher [0x02238DB2+130] (c:\src\chrome\src\base\message_pump_win.cc:49) base::MessagePumpWin::Run [0x0223901C+28] (c:\src\chrome\src\base\message_pump_win.h:79) MessageLoop::RunInternal [0x021ECE76+262] (c:\src\chrome\src\base\message_loop.cc:271) MessageLoop::RunHandler [0x021ECC3E+46] (c:\src\chrome\src\base\message_loop.cc:244) MessageLoop::Run [0x021ECB2A+58] (c:\src\chrome\src\base\message_loop.cc:222) webkit_support::RunMessageLoop [0x00F6B12F+15] (c:\src\chrome\src\webkit\support\webkit_support.cc:328) TestShell::waitTestFinished [0x00B7ED9D+141] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\testshellwin.cpp:106) TestShell::runFileTest [0x00B9875B+411] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\testshell.cpp:187) runTest [0x00BAD21D+621] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\dumprendertree.cpp:92) main [0x00BAC9E9+1897] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\dumprendertree.cpp:193) __tmainCRTStartup [0x01127073+563] (f:\dd\vctools\crt_bld\self_x86\crt\src\crt0.c:327) mainCRTStartup [0x01126E3D+13] (f:\dd\vctools\crt_bld\self_x86\crt\src\crt0.c:196) BaseThreadInitThunk [0x7675ECCB+14] RtlCreateUserProcess [0x774AD24D+140] RtlCreateProcessParameters [0x774AD45F+78]
Attachments
[patch] initial version (2.98 KB, patch)
2010-12-22 08:06 PST, Ilya Tikhonovsky 		no flags
DetailsFormatted DiffDiff
[patch] initial version without changes in test_expectations. (1.29 KB, patch)
2010-12-22 08:11 PST, Ilya Tikhonovsky 		no flags
DetailsFormatted DiffDiff
Show Obsolete (1) View All Add attachment proposed patch, testcase, etc.
Tony Chang
Comment 1 2010-12-08 16:35:04 PST
Here's another stack: ASSERTION FAILED: style == inlineStyle() (c:\src\chrome\src\third_party\webkit\webcore\inspector\InspectorStyleSheet.h:245 WebCore::InspectorStyleSheetForInlineStyle::ruleSourceDataFor) Backtrace: WebCore::InspectorStyleSheetForInlineStyle::ruleSourceDataFor [0x012762F7+55] (c:\src\chrome\src\third_party\webkit\webcore\inspector\inspectorstylesheet.h:245) WebCore::InspectorStyle::buildObjectForStyle [0x01270665+389] (c:\src\chrome\src\third_party\webkit\webcore\inspector\inspectorstylesheet.cpp:144) WebCore::InspectorStyleSheet::buildObjectForStyle [0x012744EA+442] (c:\src\chrome\src\third_party\webkit\webcore\inspector\inspectorstylesheet.cpp:739) WebCore::InspectorCSSAgent::getStylesForNode2 [0x010C994A+170] (c:\src\chrome\src\third_party\webkit\webcore\inspector\inspectorcssagent.cpp:186) WebCore::InspectorBackendDispatcher::getStylesForNode2 [0x0196D057+311] (c:\src\chrome\src\webkit\debug\obj\global_intermediate\webcore\inspectorbackenddispatcher.cpp:1821) WebCore::InspectorBackendDispatcher::dispatch [0x01975D8E+8110] (c:\src\chrome\src\webkit\debug\obj\global_intermediate\webcore\inspectorbackenddispatcher.cpp:2762) WebKit::WebDevToolsAgentImpl::dispatchOnInspectorBackend [0x006707AD+61] (c:\src\chrome\src\third_party\webkit\webkit\chromium\src\webdevtoolsagentimpl.cpp:241) DRTDevToolsAgent::call [0x0010E49C+60] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\drtdevtoolsagent.cpp:96) DRTDevToolsAgent::AsyncCallTask::runIfValid [0x0010E380+32] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\drtdevtoolsagent.h:88) MethodTask<DRTDevToolsAgent>::run [0x0010EA57+39] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\task.h:72) invokeTask [0x00108E3C+44] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\task.cpp:61) DispatchToFunction<void (__cdecl*)(void *),void *> [0x0055359F+15] (c:\src\chrome\src\base\tuple.h:614) RunnableFunction<void (__cdecl*)(void *),Tuple1<void *> >::Run [0x005534AA+42] (c:\src\chrome\src\base\task.h:441) MessageLoop::RunTask [0x017E42D0+272] (c:\src\chrome\src\base\message_loop.cc:423) MessageLoop::DeferOrRunPendingTask [0x017E4405+53] (c:\src\chrome\src\base\message_loop.cc:435) MessageLoop::DoWork [0x017E495C+236] (c:\src\chrome\src\base\message_loop.cc:539) base::MessagePumpForUI::DoRunLoop [0x018301C4+84] (c:\src\chrome\src\base\message_pump_win.cc:201) base::MessagePumpWin::RunWithDispatcher [0x0182FA12+130] (c:\src\chrome\src\base\message_pump_win.cc:49) base::MessagePumpWin::Run [0x0182FC7C+28] (c:\src\chrome\src\base\message_pump_win.h:79) MessageLoop::RunInternal [0x017E3886+262] (c:\src\chrome\src\base\message_loop.cc:271) MessageLoop::RunHandler [0x017E364E+46] (c:\src\chrome\src\base\message_loop.cc:244) MessageLoop::Run [0x017E353A+58] (c:\src\chrome\src\base\message_loop.cc:222) webkit_support::RunMessageLoop [0x00550D7F+15] (c:\src\chrome\src\webkit\support\webkit_support.cc:328) TestShell::waitTestFinished [0x000DEDDD+141] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\testshellwin.cpp:106) TestShell::runFileTest [0x000F879B+411] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\testshell.cpp:187) runTest [0x0010D14D+621] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\dumprendertree.cpp:92) main [0x0010C919+1897] (c:\src\chrome\src\third_party\webkit\webkittools\dumprendertree\chromium\dumprendertree.cpp:193) __tmainCRTStartup [0x0070C443+563] (f:\dd\vctools\crt_bld\self_x86\crt\src\crt0.c:327) mainCRTStartup [0x0070C20D+13] (f:\dd\vctools\crt_bld\self_x86\crt\src\crt0.c:196) BaseThreadInitThunk [0x7675ECCB+14] RtlCreateUserProcess [0x774AD24D+140] RtlCreateProcessParameters [0x774AD45F+78]
Alexander Pavlov (apavlov)
Comment 2 2010-12-09 06:09:17 PST
Looks like the inspected page DOM/CSS structures have been destroyed but InspectorCSSAgent is still live (together with InspectorController, I presume) and trying to provide data to the DevTools frontend. Is this situation potentially possible in the new DRT setup (perhaps [abnormal] renderer process termination or something)?
Tony Chang
Comment 3 2010-12-09 17:34:21 PST
(In reply to comment #2) > Looks like the inspected page DOM/CSS structures have been destroyed but InspectorCSSAgent is still live (together with InspectorController, I presume) and trying to provide data to the DevTools frontend. Is this situation potentially possible in the new DRT setup (perhaps [abnormal] renderer process termination or something)? I don't think this is possible, but an extra pair of eyes to look at this would be helpful. It looks like DRTDevToolsAgent keep a pointer to the current page (m_webView). This webview is set when we start DRT in TestShell() and set to NULL in ~TestShell. It doesn't look like this webview changes during the life of DRT. Kent-san, does that sound correct to you?
Tony Chang
Comment 4 2010-12-10 12:07:08 PST
*** Bug 50822 has been marked as a duplicate of this bug. ***
Tony Chang
Comment 5 2010-12-10 12:07:18 PST
*** Bug 50823 has been marked as a duplicate of this bug. ***
Kent Tamura
Comment 6 2010-12-12 22:23:45 PST
(In reply to comment #3) > (In reply to comment #2) > > Looks like the inspected page DOM/CSS structures have been destroyed but InspectorCSSAgent is still live (together with InspectorController, I presume) and trying to provide data to the DevTools frontend. Is this situation potentially possible in the new DRT setup (perhaps [abnormal] renderer process termination or something)? > > I don't think this is possible, but an extra pair of eyes to look at this would be helpful. > > It looks like DRTDevToolsAgent keep a pointer to the current page (m_webView). This webview is set when we start DRT in TestShell() and set to NULL in ~TestShell. It doesn't look like this webview changes during the life of DRT. Kent-san, does that sound correct to you? I think TestShell::m_webView can not be changed. However the document tree in m_webView is replaced by page transition.
Ilya Tikhonovsky
Comment 7 2010-12-22 08:06:55 PST
Created attachment 77216 [details] [patch] initial version
Ilya Tikhonovsky
Comment 8 2010-12-22 08:11:17 PST
Created attachment 77217 [details] [patch] initial version without changes in test_expectations.
Yury Semikhatsky
Comment 9 2010-12-22 08:19:58 PST
Comment on attachment 77217 [details] [patch] initial version without changes in test_expectations. View in context: https://bugs.webkit.org/attachment.cgi?id=77217&action=review > Tools/ChangeLog:7 > + DevTools window shourd be closed explicitly because it has custom deinitialization code. typo: shourd->should
Ilya Tikhonovsky
Comment 10 2010-12-22 08:23:45 PST
Comment on attachment 77217 [details] [patch] initial version without changes in test_expectations. Committed r74480 M Tools/DumpRenderTree/chromium/TestShell.cpp M Tools/ChangeLog r74480 = cf82d7784f72b8f43fa9d797fb792c9189e26dc3 (refs/remotes/trunk)
Tony Chang
Comment 11 2010-12-26 00:38:25 PST
Thanks for fixing, loislo! Can we close this bug now?
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