Bug 44230

Summary: REGRESSION: Crash occurs at objc_msgSend when closing a window that is displaying the web inspector
Product: WebKit Reporter: Chris Petersen <c.petersen87>
Component: Web Inspector (Deprecated)Assignee: Yury Semikhatsky <yurys>
Status: CLOSED FIXED    
Severity: Major CC: abarth, ap, bweinstein, cedric, darin, dbates, dev+webkit, eric, harrison, jberlin, joepeck, kevin, knavia, loislo, m.malecki, ossy, pfeldman, rniwa, rowan, skepticus, s+webkit, timothy, webkit.review.bot, yurys
Priority: P1 Keywords: InRadar, Regression
Version: 528+ (Nightly build)   
Hardware: All   
OS: All   
Bug Depends on: 44856, 45256    
Bug Blocks:    
Attachments:
Description Flags
Patch
none
Patch
none
patch that I'm going to land(doesn't crash Qt)
none
r67077 crash log
none
Patch pfeldman: review+

Chris Petersen
Reported 2010-08-18 22:33:22 PDT
Steps to reproduce: 1) Launch a webkit nightly build ( r65398) under 10.6.4 2) Enable the Develop menu 3) Select Show Web Inspector 4) After web inspector appears in window, close this browser window Process: Safari [3320] Path: /Applications/Safari.app/Contents/MacOS/Safari Identifier: org.webkit.nightly.WebKit Version: r65398 (65398) Code Type: X86-64 (Native) Parent Process: launchd [81] Date/Time: 2010-08-18 22:16:49.809 -0700 OS Version: Mac OS X 10.6.4 (10F569) Report Version: 6 Interval Since Last Report: 163610 sec Crashes Since Last Report: 6 Per-App Interval Since Last Report: 6353 sec Per-App Crashes Since Last Report: 5 Anonymous UUID: B0A7A7C4-B6FC-43DE-8EBE-1ACD3F221BD4 Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000014 Crashed Thread: 0 Dispatch queue: com.apple.main-thread Application Specific Information: objc_msgSend() selector name: _isClosed Thread 0 Crashed: Dispatch queue: com.apple.main-thread 0 libobjc.A.dylib 0x00007fff835bb11c objc_msgSend + 40 1 com.apple.WebKit 0x0000000100a3b624 -[WebInspectorWindowController close] + 84 2 com.apple.WebKit 0x0000000100a3bb5f -[WebInspectorWindowController destroyInspectorView] + 159 3 com.apple.WebCore 0x000000010106d11b WebCore::InspectorFrontendHost::closeWindow() + 27 4 com.apple.WebCore 0x0000000101225236 WebCore::jsInspectorFrontendHostPrototypeFunctionCloseWindow(JSC::ExecState*) + 118 5 ??? 0x000029f72b8001aa 0 + 46141563470250 6 com.apple.JavaScriptCore 0x00000001007d9134 JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, JSC::JSValue*) + 900 Thread 1: Dispatch queue: com.apple.libdispatch-manager 0 libSystem.B.dylib 0x00007fff85d2608a kevent + 10 1 libSystem.B.dylib 0x00007fff85d27f5d _dispatch_mgr_invoke + 154 2 libSystem.B.dylib 0x00007fff85d27c34 _dispatch_queue_invoke + 185 3 libSystem.B.dylib 0x00007fff85d2775e _dispatch_worker_thread2 + 252 4 libSystem.B.dylib 0x00007fff85d27088 _pthread_wqthread + 353 5 libSystem.B.dylib 0x00007fff85d26f25 start_wqthread + 13 Thread 2: WebCore: IconDatabase 0 libSystem.B.dylib 0x00007fff85d47eb6 __semwait_signal + 10 1 libSystem.B.dylib 0x00007fff85d4bcd1 _pthread_cond_wait + 1286 2 com.apple.WebCore 0x0000000100feba99 WebCore::IconDatabase::syncThreadMainLoop() + 249 3 com.apple.WebCore 0x0000000100febbcc WebCore::IconDatabase::iconDatabaseSyncThread() + 172 4 libSystem.B.dylib 0x00007fff85d46456 _pthread_start + 331 5 libSystem.B.dylib 0x00007fff85d46309 thread_start + 13 Thread 3: Safari: SafeBrowsingManager 0 libSystem.B.dylib 0x00007fff85d0d2fa mach_msg_trap + 10 1 libSystem.B.dylib 0x00007fff85d0d96d mach_msg + 59 2 com.apple.CoreFoundation 0x00007fff81b683c2 __CFRunLoopRun + 1698 3 com.apple.CoreFoundation 0x00007fff81b6784f CFRunLoopRunSpecific + 575 4 com.apple.Safari 0x000000010002ed99 0x100000000 + 191897 5 com.apple.Safari 0x000000010002ed29 0x100000000 + 191785 6 libSystem.B.dylib 0x00007fff85d46456 _pthread_start + 331 7 libSystem.B.dylib 0x00007fff85d46309 thread_start + 13 Thread 4: 0 libSystem.B.dylib 0x00007fff85d0d2fa mach_msg_trap + 10 1 libSystem.B.dylib 0x00007fff85d0d96d mach_msg + 59 2 com.apple.CoreFoundation 0x00007fff81b683c2 __CFRunLoopRun + 1698 3 com.apple.CoreFoundation 0x00007fff81b6784f CFRunLoopRunSpecific + 575 4 com.apple.Foundation 0x00007fff86bbf4c3 +[NSURLConnection(NSURLConnectionReallyInternal) _resourceLoadLoop:] + 297 5 com.apple.Foundation 0x00007fff86b3fe8d __NSThread__main__ + 1429 6 libSystem.B.dylib 0x00007fff85d46456 _pthread_start + 331 7 libSystem.B.dylib 0x00007fff85d46309 thread_start + 13 Thread 5: 0 libSystem.B.dylib 0x00007fff85d26eaa __workq_kernreturn + 10 1 libSystem.B.dylib 0x00007fff85d272bc _pthread_wqthread + 917 2 libSystem.B.dylib 0x00007fff85d26f25 start_wqthread + 13 Thread 6: Safari: SnapshotStore 0 libSystem.B.dylib 0x00007fff85d47eb6 __semwait_signal + 10 1 libSystem.B.dylib 0x00007fff85d4bcd1 _pthread_cond_wait + 1286 2 com.apple.JavaScriptCore 0x00000001008f61f0 WTF::ThreadCondition::timedWait(WTF::Mutex&, double) + 64 3 com.apple.Safari 0x00000001001bd941 0x100000000 + 1825089 4 com.apple.Safari 0x0000000100046783 0x100000000 + 288643 5 com.apple.Safari 0x0000000100046601 0x100000000 + 288257 6 libSystem.B.dylib 0x00007fff85d46456 _pthread_start + 331 7 libSystem.B.dylib 0x00007fff85d46309 thread_start + 13 Thread 7: 0 libSystem.B.dylib 0x00007fff85d50dce select$DARWIN_EXTSN + 10 1 com.apple.CoreFoundation 0x00007fff81b89e92 __CFSocketManager + 818 2 libSystem.B.dylib 0x00007fff85d46456 _pthread_start + 331 3 libSystem.B.dylib 0x00007fff85d46309 thread_start + 13 Thread 0 crashed with X86 Thread State (64-bit): rax: 0x0000000000000050 rbx: 0x0000000117530380 rcx: 0x0000000116efe120 rdx: 0x0000000101b2a360 rdi: 0x0000000102495890 rsi: 0x00007fff859caaa6 rbp: 0x00007fff5fbfe240 rsp: 0x00007fff5fbfe1a8 r8: 0x0000000117f4f2d8 r9: 0x000000011a6faf70 r10: 0x000000000000001f r11: 0x0000000000000004 r12: 0x00007fff80788770 r13: 0x0000000116efe0e0 r14: 0x0000000117530380 r15: 0xffff000000000002 rip: 0x00007fff835bb11c rfl: 0x0000000000010206 cr2: 0x0000000000000014 Binary Images: 0x100000000 - 0x1006adfe7 com.apple.Safari 5.0.1 (6533.17.8) <638C4B83-D91D-E257-40DD-4A16DA94F27F> /Applications/Safari.app/Contents/MacOS/Safari 0x100759000 - 0x10075cfff +WebKitNightlyEnabler.dylib ??? (???) <87832B44-836A-DB69-81CE-922270855B51> /Users/cp/Desktop/WebKit.app/Contents/Resources/WebKitNightlyEnabler.dylib 0x100761000 - 0x100951fef com.apple.JavaScriptCore 534+ (534.6+) <3953A3B7-81B5-DDEE-30C5-68435F030850> /Users/cp/Desktop/WebKit.app/Contents/Frameworks/10.6/JavaScriptCore.framework/Versions/A/JavaScriptCore 0x1009c3000 - 0x100b4cfe7 com.apple.WebKit r65398 (534.6+) <52B3E2D2-B2FF-3A1B-2BF7-99CE8E2961F9> /Users/cp/Desktop/WebKit.app/Contents/Frameworks/10.6/WebKit.framework/Versions/A/WebKit 0x100c1f000 - 0x101aa5ff7 com.apple.WebCore 534+ (534.6+) <AADB2481-FD49-C0DB-31AC-E31215F6B371> /Users/cp/Desktop/WebKit.app/Contents/Frameworks/10.6/WebCore.framework/Versions/A/WebCore 0x102183000 - 0x1021acff7 +org.andymatuschak.Sparkle 1.5 Beta (git) (830f633) <945EA036-7EC3-D020-C889-29ECB588B891> /Users/cp/Desktop/WebKit.app/Contents/Frameworks/10.6/Sparkle.framework/Versions/A/Sparkle 0x1021c7000 - 0x1022adfe7 libcrypto.0.9.7.dylib 0.9.7 (compatibility 0.9.7) <64B3566E-5F3A-A466-ED3F-B91F4B3E5F56> /usr/lib/libcrypto.0.9.7.dylib 0x114b36000 - 0x114b5aff7 libPDFRIP.A.dylib 543.50.0 (compatibility 64.0.0) <6A248153-8A28-FFCA-01F1-C85D659876FC> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/libPDFRIP.A.dylib 0x7fff5fc00000 - 0x7fff5fc3bdef dyld 132.1 (???) <B536F2F1-9DF1-3B6C-1C2C-9075EA219A06> /usr/lib/dyld 0x7fff80041000 - 0x7fff80a37fff com.apple.AppKit 6.6.6 (1038.29) <7BDD335D-5425-0354-5AD6-41C4F1B4A2F4> /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit 0x7fff80a38000 - 0x7fff80c7afef com.apple.AddressBook.framework 5.0.2 (870) <A1278575-53F2-CC00-7306-E49713FEC7C6> /System/Library/Frameworks/AddressBook.framework/Versions/A/AddressBook 0x7fff80cc1000 - 0x7fff80d46fff com.apple.print.framework.PrintCore 6.2 (312.5) <2BA9CEF6-CCF4-6719-9642-E9667F815C66> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/PrintCore.framework/Versions/A/PrintCore 0x7fff80d47000 - 0x7fff80e12fe7 ColorSyncDeprecated.dylib 4.6.0 (compatibility 1.0.0) <3C223A94-EF14-28C5-844B-C25DFC87FB42> /System/Library/Frameworks/ApplicationServices.framework/Frameworks/ColorSync.framework/Versions/A/Resources/ColorSyncDeprecated.dylib 0x7fff80e13000 - 0x7fff80e19ff7 IOSurface ??? 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(???) <D0666597-B331-C43C-67BB-F2E754079A7A> /usr/lib/liblangid.dylib 0x7fff811f2000 - 0x7fff816f6fe7 com.apple.VideoToolbox 0.484.11 (484.11) <4577FF14-E6A7-AAD8-E6E6-ECA9CFCC6989> /System/Library/PrivateFrameworks/VideoToolbox.framework/Versions/A/VideoToolbox 0x7fff816f7000 - 0x7fff816fdff7 com.apple.DiskArbitration 2.3 (2.3) <AAB5CC56-334A-3C60-3C27-54E8F34D754E> /System/Library/Frameworks/DiskArbitration.framework/Versions/A/DiskArbitration 0x7fff816fe000 - 0x7fff816feff7 com.apple.quartzframework 1.5 (1.5) <FA660AAC-70CD-7EA2-5DF1-A8724D8F4B1B> /System/Library/Frameworks/Quartz.framework/Versions/A/Quartz 0x7fff816ff000 - 0x7fff817aefff edu.mit.Kerberos 6.5.10 (6.5.10) <F3F76EDF-5660-78F0-FE6E-33B6174F55A4> /System/Library/Frameworks/Kerberos.framework/Versions/A/Kerberos 0x7fff817af000 - 0x7fff817feff7 com.apple.DirectoryService.PasswordServerFramework 6.0 (6.0) <F5B744D7-AEAF-6B66-43CF-6E31CDA18EAB> /System/Library/PrivateFrameworks/PasswordServer.framework/Versions/A/PasswordServer 0x7fff817ff000 - 0x7fff8180afff com.apple.corelocation 12 (12) <844D4E9D-2BAC-C20E-478B-10E7DC911DC0> /System/Library/Frameworks/CoreLocation.framework/Versions/A/CoreLocation 0x7fff81827000 - 0x7fff81895fff com.apple.AppleVAFramework 4.9.20 (4.9.20) <78727165-8D44-0354-6F6C-68FD798E04A1> /System/Library/PrivateFrameworks/AppleVA.framework/Versions/A/AppleVA 0x7fff819f2000 - 0x7fff819f7ff7 com.apple.CommonPanels 1.2.4 (91) <8B088D78-E508-6622-E477-E34C22CF2F67> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/CommonPanels.framework/Versions/A/CommonPanels 0x7fff819f8000 - 0x7fff819f8ff7 com.apple.ApplicationServices 38 (38) <0E2FC75E-2BE2-D04D-CA78-76E38A89DD30> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/ApplicationServices 0x7fff819f9000 - 0x7fff81ad3fff com.apple.vImage 4.0 (4.0) <B5A8B93B-D302-BC30-5A18-922645DB2F56> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vImage.framework/Versions/A/vImage 0x7fff81ad4000 - 0x7fff81aeafef libbsm.0.dylib ??? 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(???) <95E02DD0-ADEA-745B-E7FA-ABA064E4658C> /usr/lib/libSystem.B.dylib Model: MacBook7,1, BootROM MB71.0039.B09, 2 processors, Intel Core 2 Duo, 2.4 GHz, 2 GB, SMC 1.60f5 Graphics: NVIDIA GeForce 320M, NVIDIA GeForce 320M, PCI, 256 MB Memory Module: global_name AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x93), Broadcom BCM43xx 1.0 (5.10.131.16.1) Bluetooth: Version 2.3.7f1, 2 service, 19 devices, 1 incoming serial ports Network Service: AirPort, AirPort, en1 Serial ATA Device: Hitachi HTS545025B9SA02, 232.89 GB Serial ATA Device: MATSHITADVD-R UJ-898 USB Device: Built-in iSight, 0x05ac (Apple Inc.), 0x8507, 0x24600000 USB Device: Apple Internal Keyboard / Trackpad, 0x05ac (Apple Inc.), 0x0236, 0x06300000 USB Device: BRCM2070 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x06600000 USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x8218, 0x06630000
Attachments
Patch (22.74 KB, patch)
2010-08-26 07:24 PDT, Yury Semikhatsky 		no flags
DetailsFormatted DiffDiff
Patch (24.37 KB, patch)
2010-08-27 02:07 PDT, Yury Semikhatsky 		no flags
DetailsFormatted DiffDiff
patch that I'm going to land(doesn't crash Qt) (22.84 KB, patch)
2010-09-02 09:14 PDT, Yury Semikhatsky 		no flags
DetailsFormatted DiffDiff
r67077 crash log (35.87 KB, text/plain)
2010-09-09 09:36 PDT, Rowan Beentje 		no flags
Details
Patch (6.84 KB, patch)
2011-04-27 07:59 PDT, Yury Semikhatsky 		pfeldman: review+
DetailsFormatted DiffDiff
Show Obsolete (3) View All Add attachment proposed patch, testcase, etc.
Jessie Berlin
Comment 1 2010-08-23 16:45:22 PDT
*** Bug 43986 has been marked as a duplicate of this bug. ***
Jessie Berlin
Comment 2 2010-08-24 09:06:29 PDT
I am experiencing a similar crash on Windows in WebInspectorFrontendClient::closeWindow. It appears that the associated Page and/or WebView are destroyed before the Web Inspector is closed on both Mac and Windows. The closest I could get with bisecting was that this was caused by some change in between r64889 and r65052. I will continue to investigate.
Jessie Berlin
Comment 3 2010-08-24 16:58:58 PDT
(In reply to comment #2) > I am experiencing a similar crash on Windows in WebInspectorFrontendClient::closeWindow. It appears that the associated Page and/or WebView are destroyed before the Web Inspector is closed on both Mac and Windows. > > The closest I could get with bisecting was that this was caused by some change in between r64889 and r65052. I will continue to investigate. This regression first shows up after r64951 (http://trac.webkit.org/changeset/64951), which switched from InspectorFrontend to RemoteInspectorFrontend.
Jessie Berlin
Comment 4 2010-08-25 14:10:02 PDT
This should really not be fixed by just adding another null check for the webView in destroyInspectorView (both on Windows and on Mac). Page will always be null here, since it is being called as a result of a asynchronous callback from something called by Page's destructor.
Timothy Hatcher
Comment 5 2010-08-25 14:15:22 PDT
This is happening because _inspectedWebView in WebInspectorClient.mm is not retained. And closing the window deallocs that WebView, which kicks off an asynchronous close process. By the time the asynchronous close finishes the _inspectedWebView is pointing at a dealloced object. And _inspectedWebView in WebInspectorClient.mm can't be retained because it would cause a reference cycle/leak.
Darin Adler
Comment 6 2010-08-25 14:18:59 PDT
(In reply to comment #5) > This is happening because _inspectedWebView in WebInspectorClient.mm is not retained. And closing the window deallocs that WebView, which kicks off an asynchronous close process. By the time the asynchronous close finishes the _inspectedWebView is pointing at a dealloced object. > > And _inspectedWebView in WebInspectorClient.mm can't be retained because it would cause a reference cycle/leak. Given that, the solution has to be a back-pointer from the web view to the inspector client.
Timothy Hatcher
Comment 7 2010-08-25 14:49:53 PDT
(In reply to comment #6) > (In reply to comment #5) > > This is happening because _inspectedWebView in WebInspectorClient.mm is not retained. And closing the window deallocs that WebView, which kicks off an asynchronous close process. By the time the asynchronous close finishes the _inspectedWebView is pointing at a dealloced object. > > > > And _inspectedWebView in WebInspectorClient.mm can't be retained because it would cause a reference cycle/leak. > > Given that, the solution has to be a back-pointer from the web view to the inspector client. That is esentially what we use to do, but it got changed into an async call along the way without considering the lifetime of these objects.
Jessie Berlin
Comment 8 2010-08-25 15:02:34 PDT
Re-assigning to Ilya Tikhonovsky, since Pavel Feldman indicated that he and Yury Semikhatsky were looking at it and were close to a fix.
Yury Semikhatsky
Comment 9 2010-08-26 07:24:08 PDT
Created attachment 65560 [details] Patch
Pavel Feldman
Comment 10 2010-08-26 07:35:57 PDT
Comment on attachment 65560 [details] Patch r+ with nits. WebCore/inspector/InspectorFrontendHost.cpp:173 + disconnectClient(); // Disconnect from client. Why does disconnecting from backend cut the link to the client? I think it should be cut by the client itself. WebCore/inspector/front-end/inspector.js:719 + return; Can this happen? WebKit/chromium/src/InspectorFrontendClientImpl.cpp:110 + m_client->closeWindow(); We might want to clear the link to client from here instead. WebKit/gtk/WebCoreSupport/InspectorClientGtk.cpp:277 + void InspectorFrontendClient::destroyInspectorWindow(bool notifyInspectorController) That is fine for now, but we should remove the link from inspector frontend client to the inspected page. It should go through a inspector / inspectable mapping class as we have it in chromium. Maybe we can implement a common one in WebCore. WebKit/qt/WebCoreSupport/InspectorClientQt.cpp:1 + /* { Remove this change.
Yury Semikhatsky
Comment 11 2010-08-26 08:38:21 PDT
(In reply to comment #10) > (From update of attachment 65560 [details]) > r+ with nits. > > WebCore/inspector/InspectorFrontendHost.cpp:173 > + disconnectClient(); // Disconnect from client. > Why does disconnecting from backend cut the link to the client? I think it should be cut by the client itself. > Let's do this in a separate change. > WebCore/inspector/front-end/inspector.js:719 > + return; > Can this happen? > Hardly. Removed the code. > WebKit/qt/WebCoreSupport/InspectorClientQt.cpp:1 > + /* { > Remove this change. Done.
Yury Semikhatsky
Comment 12 2010-08-26 08:38:32 PDT
Committed r66103
WebKit Review Bot
Comment 13 2010-08-26 08:56:10 PDT
http://trac.webkit.org/changeset/66103 might have broken Chromium Win Release
Jessie Berlin
Comment 14 2010-08-26 13:35:27 PDT
r66103 was rolled out in r66106.
Yury Semikhatsky
Comment 15 2010-08-27 02:07:14 PDT
Created attachment 65692 [details] Patch
Yury Semikhatsky
Comment 16 2010-08-27 03:05:26 PDT
Comment on attachment 65692 [details] Patch Clearing flags on attachment: 65692 Committed r66198: <http://trac.webkit.org/changeset/66198>
Yury Semikhatsky
Comment 17 2010-08-27 03:05:38 PDT
All reviewed patches have been landed. Closing bug.
WebKit Review Bot
Comment 18 2010-08-27 03:38:52 PDT
http://trac.webkit.org/changeset/66198 might have broken Qt Linux Release
Csaba Osztrogonác
Comment 19 2010-08-30 03:11:36 PDT
Reopen, because it was rolled out by http://trac.webkit.org/changeset/66376 See https://bugs.webkit.org/show_bug.cgi?id=44856 for details
Csaba Osztrogonác
Comment 20 2010-08-30 03:12:53 PDT
.
Yury Semikhatsky
Comment 22 2010-09-02 09:14:12 PDT
Created attachment 66377 [details] patch that I'm going to land(doesn't crash Qt) The only difference with the previous one is in InspectorFrontendClientQt::destroyInspectorView which now checks if the inspected page still exists before accessing it.
WebKit Review Bot
Comment 23 2010-09-03 07:25:16 PDT
http://trac.webkit.org/changeset/66720 might have broken Leopard Intel Debug (Tests)
Yury Semikhatsky
Comment 24 2010-09-03 08:05:15 PDT
Committed r66720.
Rowan Beentje
Comment 25 2010-09-09 09:34:59 PDT
I'm still getting crashes every time for this. My reproducible test case for this is: - Open Webkit - Go to http://webkit.org - Open the Inspector - Switch to Resources tab, enable Resources - Close the window when the page has reloaded. On r67077 this still gives the following crash; I'll attach a full crash log as well: Application Specific Information: objc_msgSend() selector name: _isClosed Thread 0 Crashed: Dispatch queue: com.apple.main-thread 0 libobjc.A.dylib 0x00007fff87bf511c objc_msgSend + 40 1 com.apple.WebKit 0x0000000100a405e4 -[WebInspectorWindowController close] + 84 2 com.apple.WebKit 0x0000000100a40b1f -[WebInspectorWindowController destroyInspectorView:] + 127 3 com.apple.WebCore 0x000000010107384b WebCore::InspectorFrontendHost::disconnectFromBackend() + 27 4 com.apple.WebCore 0x000000010122bd26 WebCore::jsInspectorFrontendHostPrototypeFunctionDisconnectFromBackend(JSC::ExecState*) + 118 5 ??? 0x00003be32b8001aa 0 + 65846873424298 6 com.apple.JavaScriptCore 0x00000001007dcba8 JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, JSC::JSValue*) + 888
Rowan Beentje
Comment 26 2010-09-09 09:36:47 PDT
Created attachment 67045 [details] r67077 crash log
Ryosuke Niwa
Comment 27 2010-09-09 14:23:23 PDT
#c25 and #c26 indicate that this bug has not been fully fixed.
Rowan Beentje
Comment 28 2010-09-14 03:14:12 PDT
I'm still getting crashes several times daily on r67358 - just have to keep minimising windows instead of closing them if I've used the inspector, but I still tend to forget. Using the following steps: 1) Open website 2) Open web inspector 3) Enable resources 4) Close window …does appear to crash 100% on some sites, but not others. For example, performing these steps on http://nightly.webkit.org/start/trunk/67358 doesn't cause a crash; performing those steps on http://webkit.org (and seemingly every site I work on) does cause a crash every time.
Jessie Berlin
Comment 29 2010-09-14 06:07:50 PDT
(In reply to comment #28) > I'm still getting crashes several times daily on r67358 - just have to keep minimising windows instead of closing them if I've used the inspector, but I still tend to forget. > > Using the following steps: > 1) Open website > 2) Open web inspector > 3) Enable resources > 4) Close window > …does appear to crash 100% on some sites, but not others. For example, performing these steps on http://nightly.webkit.org/start/trunk/67358 doesn't cause a crash; performing those steps on http://webkit.org (and seemingly every site I work on) does cause a crash every time. I cannot reproduce this on Mac in Safari 5.0.2 with WebKit r67358 by following the steps you are describing on http://webkit.org. Is there a certain way you are opening the web inspector and a certain way you are enabling resources (through the button on the bottom bar)? How soon after you enable resources are you closing the window behind the web inspector? How many other browser windows do you have open when it crashes? Does it happen when you enable scripts?
Rowan Beentje
Comment 30 2010-09-14 06:22:30 PDT
Hi Jessie, Thanks for looking into this - how curious that you can't replicate it? I'm on 10.6.4, using r67358 (Safari 5.0.2 installed as the "base" application) from the nightly downloads. I open the web inspector either via the menu or via the keyboard, and enable the resources pane either via the button within the pane or in the bottom bar - both produce the same crashes. I don't have to have any other windows open - a freshly launched WebKit will show the problems; I normally have all panels disabled unless I enable them for a particular site. Here's a screen recording of a quick couple of examples - ~7MB silent .mov: http://beent.je/webkitcrashes.mov
Rowan Beentje
Comment 31 2010-09-14 06:30:27 PDT
Jessie: you're quite correct. Enabling the script debugger tab before enabling the Resources tab prevents the crash!
Jessie Berlin
Comment 32 2010-09-14 07:13:20 PDT
> Hi Jessie, > > Thanks for looking into this - how curious that you can't replicate it? > > I'm on 10.6.4, using r67358 (Safari 5.0.2 installed as the "base" application) from the nightly downloads. > > I open the web inspector either via the menu or via the keyboard, and enable the resources pane either via the button within the pane or in the bottom bar - both produce the same crashes. > > I don't have to have any other windows open - a freshly launched WebKit will show the problems; I normally have all panels disabled unless I enable them for a particular site. > > Here's a screen recording of a quick couple of examples - ~7MB silent .mov: http://beent.je/webkitcrashes.mov Even if I follow those exact steps (docking my web inspector which I usually keep as its own separate window, disabling the scripts panel and all other panels, enabling resources by using the button on the main page instead of at the bottom of the screen) I can't reproduce the crash in r67358. This is mildly maddening because you clearly have video evidence of the crash and it is clearly on r67358. Can anyone else reproduce this?
Rowan Beentje
Comment 33 2010-09-14 09:28:50 PDT
A little further information after testing, prompted by IRC: 1) Enabling the script debugger tab before closing the window does not prevent the crash; this is a red herring. But: 2) Hiding the resources view before closing the window *does* prevent the crash. That is: either switching to another inspector view (active or disabled), or closing the inspector pane when still showing resources, prevents the crash on window close. This doesn't appear to be related to input focus, as ensuring focus is out of the inspector doesn't affect the behaviour observed above.
Rowan Beentje
Comment 34 2010-09-21 05:58:46 PDT
Still happening as of r67838 I'm afraid… One more data point: crashes only occur if the Web Inspector is docked to a window. When in its own window, no crashes.
Jessie Berlin
Comment 35 2010-09-21 06:33:28 PDT
(In reply to comment #34) > Still happening as of r67838 I'm afraid… > > One more data point: crashes only occur if the Web Inspector is docked to a window. When in its own window, no crashes. I still cannot reproduce this crash, but looking at the code the issue is probably that in WebInspectorClient.mm's WebInspectorWindowController::close, the it is dereferencing _inspectedWebView to ask if it _isClosed. This is probably caused by the same issue that was causing this crash before: the Inspected WebView has gone away before this method is called and therefore dereferencing it here to find out if it is closed causes a crash. The reason we now do not see that crash more often is we have guarded that dereference of the _inspectedWebView in WebInspectorWindowController::destroyInspectorView with a check. We do not access the _inspectedWebView if we aren't told we need to notify the inspector controller to disconnect the front end. It might be enough to fix it to make the if ([_inspectedWebView _isClosed]) in WebInspectorWindowController::close a if (_inspectedWebView && [_inspectedWebView _isClosed]). Alternatively, if we know that not needing to notify the inspector controller to disconnect the frontend means that the inspector controller has or will take care of closing the window itself (even if attached), we should not call [self close] in WebInspectorWindowController if we are told that we don't need to notify the inspector controller. I am just not sure at this point that we can definitively say that.
Jessie Berlin
Comment 36 2010-09-21 06:34:13 PDT
(In reply to comment #35) > (In reply to comment #34) > > Still happening as of r67838 I'm afraid… > > > > One more data point: crashes only occur if the Web Inspector is docked to a window. When in its own window, no crashes. > > I still cannot reproduce this crash, but looking at the code the issue is probably that in WebInspectorClient.mm's WebInspectorWindowController::close, the it is dereferencing _inspectedWebView to ask if it _isClosed. > > This is probably caused by the same issue that was causing this crash before: the Inspected WebView has gone away before this method is called and therefore dereferencing it here to find out if it is closed causes a crash. > > The reason we now do not see that crash more often is we have guarded that dereference of the _inspectedWebView in WebInspectorWindowController::destroyInspectorView with a check. We do not access the _inspectedWebView if we aren't told we need to notify the inspector controller to disconnect the front end. > > It might be enough to fix it to make the if ([_inspectedWebView _isClosed]) in WebInspectorWindowController::close a if (_inspectedWebView && [_inspectedWebView _isClosed]). > > Alternatively, if we know that not needing to notify the inspector controller to disconnect the frontend means that the inspector controller has or will take care of closing the window itself (even if attached), we should not call [self close] in WebInspectorWindowController if we are told that we don't need to notify the inspector controller. I am just not sure at this point that we can definitively say that. I am also a little hesitant to put up a patch with either of these approaches since I cannot reproduce the issue and any fix would be speculative.
Rowan Beentje
Comment 37 2010-09-21 06:53:34 PDT
I'm happy to apply any patches posted here to a local copy and see if it works, although the next couple of days look rather busy!
Jessie Berlin
Comment 38 2010-09-21 07:22:22 PDT
(In reply to comment #36) > (In reply to comment #35) > > (In reply to comment #34) > > > Still happening as of r67838 I'm afraid… > > > > > > One more data point: crashes only occur if the Web Inspector is docked to a window. When in its own window, no crashes. > > > > I still cannot reproduce this crash, but looking at the code the issue is probably that in WebInspectorClient.mm's WebInspectorWindowController::close, the it is dereferencing _inspectedWebView to ask if it _isClosed. > > > > This is probably caused by the same issue that was causing this crash before: the Inspected WebView has gone away before this method is called and therefore dereferencing it here to find out if it is closed causes a crash. > > > > The reason we now do not see that crash more often is we have guarded that dereference of the _inspectedWebView in WebInspectorWindowController::destroyInspectorView with a check. We do not access the _inspectedWebView if we aren't told we need to notify the inspector controller to disconnect the front end. > > > > It might be enough to fix it to make the if ([_inspectedWebView _isClosed]) in WebInspectorWindowController::close a if (_inspectedWebView && [_inspectedWebView _isClosed]). Scratch this approach, I forgot that it will still be dependent on the race condition as described earlier. > > > > Alternatively, if we know that not needing to notify the inspector controller to disconnect the frontend means that the inspector controller has or will take care of closing the window itself (even if attached), we should not call [self close] in WebInspectorWindowController if we are told that we don't need to notify the inspector controller. I am just not sure at this point that we can definitively say that. > > I am also a little hesitant to put up a patch with either of these approaches since I cannot reproduce the issue and any fix would be speculative.
Joseph Pecoraro
Comment 39 2010-09-22 09:53:13 PDT
*** Bug 46240 has been marked as a duplicate of this bug. ***
Rowan Beentje
Comment 40 2010-10-05 06:07:22 PDT
I'm still running into this crash several times a day on r69082 - as a web dev I'm always opening and closing the resources pane, and inevitably I close the window before remember to detach the inspector beforehand… Is there anything I can do to help resolve this? I can see in the source that the problem could only possibly occur in attached inspectors; in WebInspectorClient.mm, windowShouldClose: calls destroyInspectorView:, which if it's attached to a window calls [self close]. There, if _attachedToInspectedWebView, it checks whether the _inspectedWebView _isClosed - which is where the crash occurs, as _inspectedWebView is no longer retained by WebInspectorWindowController. But not having experience with the source, I have no idea where to go from here.
Jessie Berlin
Comment 41 2010-10-05 08:44:52 PDT
(In reply to comment #40) > I'm still running into this crash several times a day on r69082 - as a web dev I'm always opening and closing the resources pane, and inevitably I close the window before remember to detach the inspector beforehand… > > Is there anything I can do to help resolve this? > > I can see in the source that the problem could only possibly occur in attached inspectors; in WebInspectorClient.mm, windowShouldClose: calls destroyInspectorView:, which if it's attached to a window calls [self close]. There, if _attachedToInspectedWebView, it checks whether the _inspectedWebView _isClosed - which is where the crash occurs, as _inspectedWebView is no longer retained by WebInspectorWindowController. > > But not having experience with the source, I have no idea where to go from here. I have been looking at this, and I have actually been able to reproduce it on a different machine than the one I was trying on before. However, neither of the fixes I proposed above solve the problem. If you need an immediate fix because you find it impossible to live on it as it is, you can make the if clause in destroyInspectorView be if (_attachedToInspectedWebView && notifyInspectorController) and then move the last call to [_webView close] into the if (notifyInspectorController) statement. That will cause it not crash, but it also will cause the web view to be leaked.
Alexander Pavlov (apavlov)
Comment 42 2010-11-10 03:16:31 PST
*** Bug 47351 has been marked as a duplicate of this bug. ***
Alexey Proskuryakov
Comment 43 2010-12-10 21:48:34 PST
*** Bug 50837 has been marked as a duplicate of this bug. ***
Alexey Proskuryakov
Comment 44 2010-12-10 21:50:14 PST
Is anyone still working on this bug?
Rowan Beentje
Comment 45 2010-12-15 10:37:05 PST
Doesn't look like it ;) I'm still able to reproduce this issue on demand if required for testing, and am willing to make changes to a local copy of the source to verify patches if you'd like me to try debugging anything. Just let me know!
Alexey Proskuryakov
Comment 46 2010-12-15 14:47:05 PST
*** Bug 51080 has been marked as a duplicate of this bug. ***
Alexey Proskuryakov
Comment 47 2010-12-21 11:45:32 PST
*** Bug 51400 has been marked as a duplicate of this bug. ***
Alexey Proskuryakov
Comment 48 2011-01-16 22:27:10 PST
*** Bug 52533 has been marked as a duplicate of this bug. ***
Alexey Proskuryakov
Comment 49 2011-01-16 22:27:53 PST
<rdar://problem/8872093>
Daniel Bates
Comment 50 2011-03-18 19:32:29 PDT
*** Bug 55865 has been marked as a duplicate of this bug. ***
Timothy Hatcher
Comment 51 2011-04-01 13:47:55 PDT
<rdar://problem/8415399>
Timothy Hatcher
Comment 52 2011-04-01 14:00:49 PDT
I can't reproduce this on TOT.
Kevin M. Dean
Comment 53 2011-04-01 14:08:24 PDT
(In reply to comment #52) > I can't reproduce this on TOT. After a couple of tries I can still trigger a crash although now with a different log than before. I was still getting the objc_msgSend_rtp crash as recent as yesterday. Process: Safari [3341] Path: /Applications/WebKit.app/Contents/MacOS/WebKit Identifier: org.webkit.nightly.WebKit Version: r82674 (82674) Code Type: PPC (Native) Parent Process: launchd [126] Date/Time: 2011-04-01 17:05:07.072 -0400 OS Version: Mac OS X 10.5.8 (9L30) Report Version: 6 Anonymous UUID: F41C1802-6457-4B49-A738-107FEBA3B7F7 Exception Type: EXC_BAD_ACCESS (SIGBUS) Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000030 Crashed Thread: 0 Thread 0 Crashed: 0 com.apple.WebCore 0x01bef7d8 WebCore::InspectorBackendDispatcher::DOM_hideDOMNodeHighlight(long, WebCore::InspectorObject*) + 56 1 com.apple.WebCore 0x01edd9ec WebCore::jsInspectorFrontendHostPrototypeFunctionSendMessageToBackend(JSC::ExecState*) + 460 2 com.apple.JavaScriptCore 0x007cabd0 JSC::Interpreter::privateExecute(JSC::Interpreter::ExecutionFlag, JSC::RegisterFile*, JSC::ExecState*) + 57824 3 com.apple.JavaScriptCore 0x007d2ed8 JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 1720 4 com.apple.JavaScriptCore 0x00778fd4 JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 84 5 com.apple.WebCore 0x01dba5dc WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext*, WebCore::Event*) + 2076 6 com.apple.WebCore 0x01a3d1f8 WebCore::EventTarget::fireEventListeners(WebCore::Event*, WebCore::EventTargetData*, WTF::Vector<WebCore::RegisteredEventListener, 1ul>&) + 376 7 com.apple.WebCore 0x01a3dc94 WebCore::EventTarget::fireEventListeners(WebCore::Event*) + 116 8 com.apple.WebCore 0x01a25c28 WebCore::EventContext::handleLocalEvents(WebCore::Event*) const + 136 9 com.apple.WebCore 0x01a2667c WebCore::EventDispatcher::dispatchEvent(WTF::PassRefPtr<WebCore::Event>) + 972 10 com.apple.WebCore 0x01a27a10 WebCore::EventDispatcher::dispatchMouseEvent(WebCore::Node*, WebCore::PlatformMouseEvent const&, WTF::AtomicString const&, int, WebCore::Node*) + 480 11 com.apple.WebCore 0x01a322a4 WebCore::EventHandler::updateMouseEventTargetNode(WebCore::Node*, WebCore::PlatformMouseEvent const&, bool) + 1636 12 com.apple.WebCore 0x01a3256c WebCore::EventHandler::dispatchMouseEvent(WTF::AtomicString const&, WebCore::Node*, bool, int, WebCore::PlatformMouseEvent const&, bool) + 92 13 com.apple.WebCore 0x01a34208 WebCore::EventHandler::handleMouseMoveEvent(WebCore::PlatformMouseEvent const&, WebCore::HitTestResult*) + 1512 14 com.apple.WebCore 0x01a34370 WebCore::EventHandler::mouseMoved(WebCore::PlatformMouseEvent const&) + 64 15 com.apple.WebCore 0x01a38540 WebCore::EventHandler::mouseMoved(NSEvent*) + 320 16 com.apple.WebKit 0x009e6f90 -[WebHTMLView(WebPrivate) _updateMouseoverWithEvent:] + 704 17 com.apple.CoreFoundation 0x91f9e818 CFRunLoopRunSpecific + 2968 18 com.apple.HIToolbox 0x9034db14 RunCurrentEventLoopInMode + 264 19 com.apple.HIToolbox 0x9034d8a0 ReceiveNextEventCommon + 260 20 com.apple.HIToolbox 0x9034d778 BlockUntilNextEventMatchingListInMode + 84 21 com.apple.AppKit 0x90977244 _DPSNextEvent + 596 22 com.apple.AppKit 0x90976bfc -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 112 23 com.apple.Safari 0x00019a10 0x1000 + 100880 24 com.apple.AppKit 0x9097089c -[NSApplication run] + 744 25 com.apple.AppKit 0x90941298 NSApplicationMain + 440 26 com.apple.Safari 0x0000c058 0x1000 + 45144
Rowan Beentje
Comment 54 2011-04-01 14:23:37 PDT
The mixed news is, I can no longer reproduce this bug 100% of the time. The bad news is that I do still get this exact crash in r82674; to do so I still have to use the attached inspector view: Process: Safari [94158] Path: /Applications/Safari.app/Contents/MacOS/Safari Identifier: org.webkit.nightly.WebKit Version: r82674 (82674) Code Type: X86-64 (Native) Parent Process: launchd [188] Date/Time: 2011-04-01 22:18:41.820 +0100 OS Version: Mac OS X 10.6.6 (10J567) Report Version: 6 Interval Since Last Report: 307747 sec Crashes Since Last Report: 4 Per-App Interval Since Last Report: 419 sec Per-App Crashes Since Last Report: 1 Anonymous UUID: C9B91413-F1DD-4E5C-970C-BE28C7C58029 Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x000000000000001e Crashed Thread: 0 Dispatch queue: com.apple.main-thread Application Specific Information: objc_msgSend() selector name: _isClosed Thread 0 Crashed: Dispatch queue: com.apple.main-thread 0 libobjc.A.dylib 0x00007fff8082011c objc_msgSend + 40 1 com.apple.WebKit 0x0000000100a7dd04 -[WebInspectorWindowController close] + 84 2 com.apple.WebKit 0x0000000100a7e2ff -[WebInspectorWindowController destroyInspectorView:] + 127 3 com.apple.WebCore 0x00000001011a3ecb WebCore::InspectorFrontendHost::disconnectFromBackend() + 27 4 com.apple.WebCore 0x000000010138fd4d WebCore::jsInspectorFrontendHostPrototypeFunctionDisconnectFromBackend(JSC::ExecState*) + 93 5 ??? 0x000049314e4001e8 0 + 80476115042792 6 com.apple.JavaScriptCore 0x00000001007d9bcf JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 847 7 ??? 0x000000011c6eaa00 0 + 4771981824 8 ??? 0x000000012345af20 0 + 4886736672 9 com.apple.JavaScriptCore 0x000000010083b9a0 JSC::JSFunction::~JSFunction() + 0 10 ??? 0x001522c0058d48fd 0 + 5949182633134333
Kevin M. Dean
Comment 55 2011-04-01 14:39:31 PDT
(In reply to comment #53) > (In reply to comment #52) > > I can't reproduce this on TOT. > > After a couple of tries I can still trigger a crash although now with a different log than before. I was still getting the objc_msgSend_rtp crash as recent as yesterday. Subsequent crashes since my last comment are back to the usual objc_msgSend_rtp.
Timothy Hatcher
Comment 56 2011-04-01 14:50:44 PDT
Thanks, being attached is the key to reproducing it. Kevin, please file a new bug about the WebCore::InspectorBackendDispatcher::DOM_hideDOMNodeHighlight crash.
Chris Petersen
Comment 57 2011-04-01 15:33:53 PDT
I can confirm this crash is still occurring with Webkit NB r82674 on 10.6.7. I can reproduce on my first attempt: 1) Launch r82674 2) Enable Develop menu 3) Select Show Web Inspector ( Inspector is attached to window ) 4) Close browser window which contains the web inspector 5) Crash occurs in a few seconds after closing window Process: Safari [208] Path: /Applications/Safari.app/Contents/MacOS/Safari Identifier: org.webkit.nightly.WebKit Version: r82674 (82674) Code Type: X86-64 (Native) Parent Process: launchd [110] Date/Time: 2011-04-01 15:22:02.726 -0700 OS Version: Mac OS X 10.6.7 (10J869) Report Version: 6 Interval Since Last Report: 98812 sec Crashes Since Last Report: 3 Per-App Interval Since Last Report: 132 sec Per-App Crashes Since Last Report: 1 Anonymous UUID: B0A7A7C4-B6FC-43DE-8EBE-1ACD3F221BD4 Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000013 Crashed Thread: 0 Dispatch queue: com.apple.main-thread Application Specific Information: objc_msgSend() selector name: _isClosed Thread 0 Crashed: Dispatch queue: com.apple.main-thread 0 libobjc.A.dylib 0x00007fff85f1a11c objc_msgSend + 40 1 com.apple.WebKit 0x0000000100a7dd04 -[WebInspectorWindowController close] + 84 2 com.apple.WebKit 0x0000000100a7e2ff -[WebInspectorWindowController destroyInspectorView:] + 127 3 com.apple.WebCore 0x00000001011a3ecb WebCore::InspectorFrontendHost::disconnectFromBackend() + 27 4 com.apple.WebCore 0x000000010138fd4d WebCore::jsInspectorFrontendHostPrototypeFunctionDisconnectFromBackend(JSC::ExecState*) + 93 5 ??? 0x00004e899d2001e8 0 + 86352953606632 6 com.apple.JavaScriptCore 0x00000001007d9bcf JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 847 7 ??? 0x0000000117fd7c00 0 + 4697455616 8 ??? 0x0000000117de8ec8 0 + 4695428808 9 com.apple.JavaScriptCore 0x000000010083b9a0 JSC::JSFunction::~JSFunction() + 0 10 ??? 0x001522c0058d48fd 0 + 5949182633134333 Thread 1: Dispatch queue: com.apple.libdispatch-manager 0 libSystem.B.dylib 0x00007fff856b912a kevent + 10 1 libSystem.B.dylib 0x00007fff856baffd _dispatch_mgr_invoke + 154 2 libSystem.B.dylib 0x00007fff856bacd4 _dispatch_queue_invoke + 185 3 libSystem.B.dylib 0x00007fff856ba7fe _dispatch_worker_thread2 + 252 4 libSystem.B.dylib 0x00007fff856ba128 _pthread_wqthread + 353 5 libSystem.B.dylib 0x00007fff856b9fc5 start_wqthread + 13 Thread 2: WebCore: IconDatabase 0 libSystem.B.dylib 0x00007fff856daf8a __semwait_signal + 10 1 libSystem.B.dylib 0x00007fff856deda1 _pthread_cond_wait + 1286 2 com.apple.WebCore 0x0000000101104d99 WebCore::IconDatabase::syncThreadMainLoop() + 265 3 com.apple.WebCore 0x0000000101104ed1 WebCore::IconDatabase::iconDatabaseSyncThread() + 177 4 libSystem.B.dylib 0x00007fff856d94f6 _pthread_start + 331 5 libSystem.B.dylib 0x00007fff856d93a9 thread_start + 13 Thread 3: Safari: CertRevocationChecker 0 libSystem.B.dylib 0x00007fff856a029a mach_msg_trap + 10 1 libSystem.B.dylib 0x00007fff856a090d mach_msg + 59 2 com.apple.CoreFoundation 0x00007fff82640932 __CFRunLoopRun + 1698 3 com.apple.CoreFoundation 0x00007fff8263fdbf CFRunLoopRunSpecific + 575 4 com.apple.Safari 0x000000010002f629 0x100000000 + 194089 5 com.apple.Safari 0x000000010002f5b9 0x100000000 + 193977 6 libSystem.B.dylib 0x00007fff856d94f6 _pthread_start + 331 7 libSystem.B.dylib 0x00007fff856d93a9 thread_start + 13 Thread 4: WebCore: LocalStorage 0 libSystem.B.dylib 0x00007fff856daf8a __semwait_signal + 10 1 libSystem.B.dylib 0x00007fff856deda1 _pthread_cond_wait + 1286 2 com.apple.JavaScriptCore 0x00000001008eba00 WTF::ThreadCondition::timedWait(WTF::Mutex&, double) + 64 3 com.apple.WebCore 0x00000001015bc481 WebCore::LocalStorageThread::threadEntryPoint() + 177 4 libSystem.B.dylib 0x00007fff856d94f6 _pthread_start + 331 5 libSystem.B.dylib 0x00007fff856d93a9 thread_start + 13
Brian Weinstein
Comment 58 2011-04-26 10:53:59 PDT
Is there any update on this? It is still a reproducible crash in closing the docked inspector, which is pretty bad.
Yury Semikhatsky
Comment 59 2011-04-27 07:59:26 PDT
Created attachment 91282 [details] Patch
Yury Semikhatsky
Comment 60 2011-04-27 08:10:48 PDT
Committed r85051: <http://trac.webkit.org/changeset/85051>
Chris Petersen
Comment 61 2011-04-27 09:05:50 PDT
Great. Pulled TOT webkit r85053 and building it now to verify fix.
Chris Petersen
Comment 62 2011-04-27 11:01:58 PDT
With r85053, I no longer encounter this crash based on my steps in comment #57. Verified fixed in r85053.
Chris Petersen
Comment 63 2011-04-27 13:34:17 PDT
I'm closing since the issue has been verified and fixed in r85053
Yury Semikhatsky
Comment 64 2011-04-28 03:29:17 PDT
(In reply to comment #63) > I'm closing since the issue has been verified and fixed in r85053 Thanks for verifying this!
Timothy Hatcher
Comment 65 2011-04-28 10:56:00 PDT
Comment on attachment 91282 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=91282&action=review > Source/WebKit/mac/WebCoreSupport/WebInspectorClient.mm:-524 > - This code is absolutely used. It keeps the Develop menu items in Safari working when the Inspector window is front. Please add this code back and don't delete something when you don't know what it does. Please add it back.
Brian Weinstein
Comment 66 2011-04-28 15:18:18 PDT
(In reply to comment #65) > (From update of attachment 91282 [details]) > View in context: https://bugs.webkit.org/attachment.cgi?id=91282&action=review > > > Source/WebKit/mac/WebCoreSupport/WebInspectorClient.mm:-524 > > - > > This code is absolutely used. It keeps the Develop menu items in Safari working when the Inspector window is front. Please add this code back and don't delete something when you don't know what it does. > > Please add it back. Filed https://bugs.webkit.org/show_bug.cgi?id=59747 about the removed code.
Pavel Feldman
Comment 67 2011-04-28 22:08:01 PDT
(In reply to comment #65) > (From update of attachment 91282 [details]) > View in context: https://bugs.webkit.org/attachment.cgi?id=91282&action=review > > > Source/WebKit/mac/WebCoreSupport/WebInspectorClient.mm:-524 > > - > > This code is absolutely used. It keeps the Develop menu items in Safari working when the Inspector window is front. Please add this code back and don't delete something when you don't know what it does. > > Please add it back. Yeah, sorry about that. Maybe it is the case when a little comment in the WebKit code might come handy.
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