Bug 142250

Summary: [iOS] Crash in WebCore::RenderLayer::updateCompositingLayersAfterScroll() when using swipe gesture
Product: WebKit Reporter: EJ <edemowebkit>
Component: Layout and RenderingAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Normal CC: dbates, kantoiii, simon.fraser
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: iPhone / iPad   
OS: iOS 8.2   
Attachments:
Description Flags
Crash log on iPad Air (ipad 4,1) none

EJ
Reported 2015-03-03 17:19:15 PST
Created attachment 247821 [details] Crash log on iPad Air (ipad 4,1) Issue has been reproduced on iOS 8.1.1 iOS 8.1.2 iOS 8.1.3 iOS 8.2.2 iOS 8.2.5 iOS 8.3 iOS 8.1 Simulator GO to https://www.storiaschool.com is iOS safari browser user simon-fras7 pw: webkit 1. open any eBook from the student bookshelf (Ex: (Who Is in There? (Sight Words Stories)) 2. swipe through the pages at a slow speed as if you were reading every page until you get to the last page 3. answer one or two of the questions, then exit the quiz 4. use the scrubber (thats the scrollbar at the bottom) to go back to the begining of the book and begin swiping through again Result: randomly logs the user out of the book and lands back on the bookshelf with the folllowing error message: "A problem occured with this webpage so it was reloaded." Expected: navigating the pages of a book should not log the user out of the book. Notes: I have seen this a total of 5 times in the last two days on approximately 30 attempts to reproduce the above steps. ----- iOS Simulator crash log ---- Process: com.apple.WebKit.WebContent [1900] Path: /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/WebKit.framework/XPCServices/com.apple.WebKit.WebContent.xpc/com.apple.WebKit.WebContent Identifier: com.apple.WebKit.WebContent Version: 8600 (8600.1.4.11.10) Code Type: X86-64 (Native) Parent Process: launchd_sim [1855] Responsible: launchd_sim [1855] User ID: 704325551 Date/Time: 2015-03-03 20:01:30.599 -0500 OS Version: Mac OS X 10.10.2 (14C109) Report Version: 11 Anonymous UUID: C1F1284C-47F6-6D14-975D-7E94DE2419DF Time Awake Since Boot: 5800 seconds Crashed Thread: 0 Dispatch queue: com.apple.main-thread Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000020 VM Regions Near 0x20: --> __TEXT 00000001076cb000-00000001076cd000 [ 8K] r-x/r-x SM=COW /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/WebKit.framework/XPCServices/com.apple.WebKit.WebContent.xpc/com.apple.WebKit.WebContent Application Specific Information: CoreSimulator 117.5.4 - Device: iPad Air - Runtime: iOS 8.1 (12B411) - DeviceType: iPad Air Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 com.apple.WebKit 0x0000000107c37c8f WebKit::nextFocusableElement(WebCore::Node*, WebCore::Page*, bool) + 48 1 com.apple.WebKit 0x0000000107c37c32 WebKit::WebPage::focusNextAssistedNode(bool) + 32 2 com.apple.WebKit 0x0000000107d46a7a WebKit::WebPage::didReceiveWebPageMessage(IPC::Connection*, IPC::MessageDecoder&) + 3972 3 com.apple.WebKit 0x0000000107c5ece8 IPC::MessageReceiverMap::dispatchMessage(IPC::Connection*, IPC::MessageDecoder&) + 120 4 com.apple.WebKit 0x0000000107d8dbb8 WebKit::WebProcess::didReceiveMessage(IPC::Connection*, IPC::MessageDecoder&) + 28 5 com.apple.WebKit 0x0000000107be810a IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::MessageDecoder, std::__1::default_delete<IPC::MessageDecoder> >) + 94 6 com.apple.WebKit 0x0000000107beab24 IPC::Connection::dispatchOneMessage() + 110 7 JavaScriptCore 0x000000010bff2aa6 WTF::RunLoop::performWork() + 454 8 JavaScriptCore 0x000000010bff335a WTF::RunLoop::performWork(void*) + 26 9 com.apple.CoreFoundation 0x0000000108baa551 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17 10 com.apple.CoreFoundation 0x0000000108ba041d __CFRunLoopDoSources0 + 269 11 com.apple.CoreFoundation 0x0000000108b9fa54 __CFRunLoopRun + 868 12 com.apple.CoreFoundation 0x0000000108b9f486 CFRunLoopRunSpecific + 470 13 com.apple.Foundation 0x000000010779bb42 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 275 14 com.apple.Foundation 0x0000000107827b10 -[NSRunLoop(NSRunLoop) run] + 74 15 libxpc.dylib 0x0000000109b01b1d _xpc_objc_main + 370 16 libxpc.dylib 0x0000000109b03ee0 xpc_main + 185 17 com.apple.WebKit.WebContent 0x00000001076cc670 0x1076cb000 + 5744 18 libdyld.dylib 0x000000010984d145 start + 1 Thread 1:: Dispatch queue: com.apple.libdispatch-manager 0 libsystem_kernel.dylib 0x0000000109b55232 kevent64 + 10 1 libdispatch.dylib 0x000000010980e304 _dispatch_mgr_thread + 54 Thread 2:: JavaScriptCore::BlockFree 0 libsystem_kernel.dylib 0x0000000109b54136 __psynch_cvwait + 10 1 libc++.1.dylib 0x0000000108241475 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 47 2 JavaScriptCore 0x000000010bb4d153 JSC::BlockAllocator::blockFreeingThreadMain() + 243 3 JavaScriptCore 0x000000010bfff483 WTF::wtfThreadEntryPoint(void*) + 19 4 libsystem_pthread.dylib 0x0000000109b85268 _pthread_body + 131 5 libsystem_pthread.dylib 0x0000000109b851e5 _pthread_start + 176 6 libsystem_pthread.dylib 0x0000000109b8341d thread_start + 13 Thread 3:: JavaScriptCore::Marking 0 libsystem_kernel.dylib 0x0000000109b54136 __psynch_cvwait + 10 1 libc++.1.dylib 0x0000000108241475 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 47 2 JavaScriptCore 0x000000010bce536b JSC::GCThread::waitForNextPhase() + 171 3 JavaScriptCore 0x000000010bce5418 JSC::GCThread::gcThreadMain() + 72 4 JavaScriptCore 0x000000010bfff483 WTF::wtfThreadEntryPoint(void*) + 19 5 libsystem_pthread.dylib 0x0000000109b85268 _pthread_body + 131 6 libsystem_pthread.dylib 0x0000000109b851e5 _pthread_start + 176 7 libsystem_pthread.dylib 0x0000000109b8341d thread_start + 13 Thread 4:: JavaScriptCore::Marking 0 libsystem_kernel.dylib 0x0000000109b54136 __psynch_cvwait + 10 1 libc++.1.dylib 0x0000000108241475 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 47 2 JavaScriptCore 0x000000010bce536b JSC::GCThread::waitForNextPhase() + 171 3 JavaScriptCore 0x000000010bce5418 JSC::GCThread::gcThreadMain() + 72 4 JavaScriptCore 0x000000010bfff483 WTF::wtfThreadEntryPoint(void*) + 19 5 libsystem_pthread.dylib 0x0000000109b85268 _pthread_body + 131 6 libsystem_pthread.dylib 0x0000000109b851e5 _pthread_start + 176 7 libsystem_pthread.dylib 0x0000000109b8341d thread_start + 13 Thread 5:: JavaScriptCore::Marking 0 libsystem_kernel.dylib 0x0000000109b54136 __psynch_cvwait + 10 1 libc++.1.dylib 0x0000000108241475 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 47 2 JavaScriptCore 0x000000010bce536b JSC::GCThread::waitForNextPhase() + 171 3 JavaScriptCore 0x000000010bce5418 JSC::GCThread::gcThreadMain() + 72 4 JavaScriptCore 0x000000010bfff483 WTF::wtfThreadEntryPoint(void*) + 19 5 libsystem_pthread.dylib 0x0000000109b85268 _pthread_body + 131 6 libsystem_pthread.dylib 0x0000000109b851e5 _pthread_start + 176 7 libsystem_pthread.dylib 0x0000000109b8341d thread_start + 13 Thread 6:: JavaScriptCore::Marking 0 libsystem_kernel.dylib 0x0000000109b54136 __psynch_cvwait + 10 1 libc++.1.dylib 0x0000000108241475 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 47 2 JavaScriptCore 0x000000010bce536b JSC::GCThread::waitForNextPhase() + 171 3 JavaScriptCore 0x000000010bce5418 JSC::GCThread::gcThreadMain() + 72 4 JavaScriptCore 0x000000010bfff483 WTF::wtfThreadEntryPoint(void*) + 19 5 libsystem_pthread.dylib 0x0000000109b85268 _pthread_body + 131 6 libsystem_pthread.dylib 0x0000000109b851e5 _pthread_start + 176 7 libsystem_pthread.dylib 0x0000000109b8341d thread_start + 13 Thread 7:: JavaScriptCore::Marking 0 libsystem_kernel.dylib 0x0000000109b54136 __psynch_cvwait + 10 1 libc++.1.dylib 0x0000000108241475 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 47 2 JavaScriptCore 0x000000010bce536b JSC::GCThread::waitForNextPhase() + 171 3 JavaScriptCore 0x000000010bce5418 JSC::GCThread::gcThreadMain() + 72 4 JavaScriptCore 0x000000010bfff483 WTF::wtfThreadEntryPoint(void*) + 19 5 libsystem_pthread.dylib 0x0000000109b85268 _pthread_body + 131 6 libsystem_pthread.dylib 0x0000000109b851e5 _pthread_start + 176 7 libsystem_pthread.dylib 0x0000000109b8341d thread_start + 13 Thread 8:: JavaScriptCore::Marking 0 libsystem_kernel.dylib 0x0000000109b54136 __psynch_cvwait + 10 1 libc++.1.dylib 0x0000000108241475 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 47 2 JavaScriptCore 0x000000010bce536b JSC::GCThread::waitForNextPhase() + 171 3 JavaScriptCore 0x000000010bce5418 JSC::GCThread::gcThreadMain() + 72 4 JavaScriptCore 0x000000010bfff483 WTF::wtfThreadEntryPoint(void*) + 19 5 libsystem_pthread.dylib 0x0000000109b85268 _pthread_body + 131 6 libsystem_pthread.dylib 0x0000000109b851e5 _pthread_start + 176 7 libsystem_pthread.dylib 0x0000000109b8341d thread_start + 13 Thread 9:: DFG Worklist Worker Thread 0 libsystem_kernel.dylib 0x0000000109b54136 __psynch_cvwait + 10 1 JavaScriptCore 0x000000010bcd4da7 JSC::DFG::Worklist::runThread(JSC::DFG::ThreadData*) + 215 2 JavaScriptCore 0x000000010bfff483 WTF::wtfThreadEntryPoint(void*) + 19 3 libsystem_pthread.dylib 0x0000000109b85268 _pthread_body + 131 4 libsystem_pthread.dylib 0x0000000109b851e5 _pthread_start + 176 5 libsystem_pthread.dylib 0x0000000109b8341d thread_start + 13 Thread 10:: AVAudioSession Notify Thread 0 libsystem_kernel.dylib 0x0000000109b4f4de mach_msg_trap + 10 1 libsystem_kernel.dylib 0x0000000109b4e64f mach_msg + 55 2 com.apple.CoreFoundation 0x0000000108ba0744 __CFRunLoopServiceMachPort + 212 3 com.apple.CoreFoundation 0x0000000108b9fbf7 __CFRunLoopRun + 1287 4 com.apple.CoreFoundation 0x0000000108b9f486 CFRunLoopRunSpecific + 470 5 libAVFAudio.dylib 0x00000001130be697 GenericRunLoopThread::Entry(void*) + 189 6 libAVFAudio.dylib 0x00000001130b2179 CAPThread::Entry(CAPThread*) + 109 7 libsystem_pthread.dylib 0x0000000109b85268 _pthread_body + 131 8 libsystem_pthread.dylib 0x0000000109b851e5 _pthread_start + 176 9 libsystem_pthread.dylib 0x0000000109b8341d thread_start + 13 Thread 11: 0 libsystem_kernel.dylib 0x0000000109b5494a __workq_kernreturn + 10 1 libsystem_pthread.dylib 0x0000000109b8340d start_wqthread + 13 Thread 12: 0 libsystem_kernel.dylib 0x0000000109b5494a __workq_kernreturn + 10 1 libsystem_pthread.dylib 0x0000000109b8340d start_wqthread + 13 Thread 13: 0 libsystem_kernel.dylib 0x0000000109b5494a __workq_kernreturn + 10 1 libsystem_pthread.dylib 0x0000000109b8340d start_wqthread + 13 Thread 0 crashed with X86 Thread State (64-bit): rax: 0x00007fff58532990 rbx: 0x000000011395de10 rcx: 0x0000014be24d4800 rdx: 0x000000000000004d rdi: 0x00007fff585328e0 rsi: 0x00007fffffe00050 rbp: 0x00007fff585329c0 rsp: 0x00007fff58532990 r8: 0x0000000054f6596a r9: 0x0000000000000000 r10: 0x000000000001f3a8 r11: 0x000000010d002b70 r12: 0x000000011c8df090 r13: 0x0000000000000000 r14: 0x0000000000000001 r15: 0x0000000113981800 rip: 0x0000000107c37c8f rfl: 0x0000000000010202 cr2: 0x0000000000000020 Logical CPU: 4 Error Code: 0x00000004 Trap Number: 14 Binary Images: 0x1076cb000 - 0x1076ccfff com.apple.WebKit.WebContent (8600 - 8600.1.4.11.10) <1C2526D7-79F6-319E-A597-F38907773FC4> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/WebKit.framework/XPCServices/com.apple.WebKit.WebContent.xpc/com.apple.WebKit.WebContent 0x1076d0000 - 0x1076f461f +dyld_sim (353.2.1) <EE50CD24-1E90-32CE-A2A6-9D5777ED53A6> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/dyld_sim 0x10773a000 - 0x107a02ff7 com.apple.Foundation (6.9 - 1141.1) <34F40FB5-7736-3C35-8CB6-B4D022905070> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/Foundation.framework/Foundation 0x107bd8000 - 0x107f7bfff com.apple.WebKit (8600 - 8600.1.4.11.10) <2DC664FD-1C78-399A-8896-3F98500A1F39> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/WebKit.framework/WebKit 0x10823a000 - 0x1082a5fff +libc++.1.dylib (235.1) <F554D397-7776-3652-A236-69661F56110E> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libc++.1.dylib 0x1082fa000 - 0x108301fff +libSystem.dylib (1213) <515F42A5-6E61-352F-9784-C75A1292B711> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libSystem.dylib 0x108309000 - 0x1083e0ff7 com.apple.MobileCoreServices (66 - 66) <513FDA29-8175-3795-A934-C521F0261029> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/MobileCoreServices.framework/MobileCoreServices 0x108454000 - 0x108474fff +libextension.dylib (51.2) <FD3A6BD0-62C1-3DAC-8211-F09E20DE72AE> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libextension.dylib 0x108492000 - 0x1084c4fff +libarchive.2.dylib (30) <7F9481DA-5E6C-3529-BEC4-80255F16392E> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libarchive.2.dylib 0x1084ce000 - 0x108704fff +libicucore.A.dylib (531.27.3) <8331A978-2A24-3CEB-BDD2-F2685248DFF3> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libicucore.A.dylib 0x1087be000 - 0x1089b674f +libobjc.A.dylib (647.1) <576F0DE8-DC61-357E-B54E-0C6E622AB95B> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libobjc.A.dylib 0x1089da000 - 0x108ae7fff +libxml2.2.dylib (25.6) <E9C5017F-7994-3EB5-A154-3762DD9512C6> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libxml2.2.dylib 0x108b1e000 - 0x108b30fff +libz.1.dylib (55) <9CDBF6FB-9FCB-3964-A05F-4C4E5D5A6E31> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libz.1.dylib 0x108b35000 - 0x108ed5fff com.apple.CoreFoundation (6.9 - 1141.14) <E29DCA56-BB47-37ED-A1F9-94FF292ED931> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation 0x10904a000 - 0x1092d5fff com.apple.CFNetwork (711.1.12 - 711.1.12) <000DC682-6F80-37A1-BD24-7C85AED27D4D> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CFNetwork.framework/CFNetwork 0x109457000 - 0x1094b9fff com.apple.SystemConfiguration (1.14 - 1.14) <D62E8E36-9EAF-34B8-8159-2D02D919C7A5> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/SystemConfiguration.framework/SystemConfiguration 0x1094ee000 - 0x109553fff com.apple.Security (10.0 - ???) <63A7D438-8775-3918-9FFE-034E39ADE3B1> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/Security.framework/Security 0x109594000 - 0x1095ffff7 com.apple.framework.IOKit (2.0.2 - 1051.3.7) <0CA74493-23EF-35CF-B0CD-FBABACF35449> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/IOKit.framework/Versions/A/IOKit 0x109632000 - 0x109653ff7 +libCRFSuite.dylib (32) <7E3C6667-96FA-356B-8251-6D8F1F928F1C> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libCRFSuite.dylib 0x10965e000 - 0x10965ffff +liblangid.dylib (114) <E0AEB166-ED3F-3C79-95D5-00FAA21BA6FC> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/liblangid.dylib 0x109663000 - 0x10967eff7 +libMobileGestalt.dylib (297.1.14) <BF20F875-A1F8-30B7-8823-084A40125FFB> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libMobileGestalt.dylib 0x1096af000 - 0x1096c1ff7 +libbsm.0.dylib (28.1) <9BF699AE-F19E-30F2-8C9F-49E72F989BFD> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libbsm.0.dylib 0x1096ca000 - 0x1096f7fff +libc++abi.dylib (126.2) <C601D38D-DBB7-37A1-8ECA-772C6AF5C1C6> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libc++abi.dylib 0x109705000 - 0x10970aff7 +libcache_sim.dylib (69) <7BA055A9-A632-39A7-89CA-76040A0B1B4A> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libcache_sim.dylib 0x10970f000 - 0x10971efff +libcommonCrypto.dylib (60061) <4FC0684B-1435-317D-9622-5528E6891D1E> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libcommonCrypto.dylib 0x10972c000 - 0x109733fff +libcompiler_rt.dylib (60.3) <3BCC5FFD-F7D5-3428-8875-4F75DDD80904> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libcompiler_rt.dylib 0x10973c000 - 0x109744ff7 +libcopyfile.dylib (119.1.1) <5704F196-9089-39A0-81AF-D0DDF0075D58> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libcopyfile.dylib 0x10974a000 - 0x1097c7fff +libcorecrypto.dylib (234.1.2) <0B51D5C2-03CD-30F4-B2DA-7442E80ECDA5> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libcorecrypto.dylib 0x109802000 - 0x109829fff +libdispatch.dylib (443.3.3) <9CB452C0-FC46-3447-BBAD-A6E100EDF5E5> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libdispatch.dylib 0x10984b000 - 0x10984dff7 +libdyld.dylib (353.5) <D4880F20-C90B-39C0-970F-44A45D6B3AF0> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libdyld.dylib 0x109853000 - 0x109853ff7 +liblaunch.dylib (560.3.4) <01747FC0-882D-3570-A15C-ECF5091B71D0> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/liblaunch.dylib 0x109859000 - 0x10985ffff +libmacho_sim.dylib (857) <305B4A1E-8138-3867-9FC1-C99EF196BCC1> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libmacho_sim.dylib 0x109865000 - 0x109867fff +libremovefile.dylib (35) <CDBD2F0C-2264-3959-974B-C01CFE9764F2> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libremovefile.dylib 0x10986c000 - 0x109885ff7 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8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/CloudDocs.framework/CloudDocs 0x7fff6efb3000 - 0x7fff6efe9837 dyld (353.2.1) <65DCCB06-339C-3E25-9702-600A28291D0E> /usr/lib/dyld External Modification Summary: Calls made by other processes targeting this process: task_for_pid: 0 thread_create: 0 thread_set_state: 0 Calls made by this process: task_for_pid: 0 thread_create: 0 thread_set_state: 0 Calls made by all processes on this machine: task_for_pid: 4290 thread_create: 1 thread_set_state: 0 VM Region Summary: ReadOnly portion of Libraries: Total=197.8M resident=144.6M(73%) swapped_out_or_unallocated=53.2M(27%) Writable regions: Total=1.2G written=80.0M(7%) resident=107.3M(9%) swapped_out=0K(0%) unallocated=1.1G(91%) REGION TYPE VIRTUAL =========== ======= CoreServices 512K Dispatch continuations 16.0M Image IO 3992K JS JIT generated code 1.0G JS garbage collector 10.6M Kernel Alloc Once 8K MALLOC 99.3M MALLOC (admin) 32K STACK GUARD 56.1M Stack 14.2M VM_ALLOCATE 24.2M WebCore purgeable data 872K WebKit Malloc 25.1M __DATA 20.7M __LINKEDIT 46.1M __TEXT 151.8M __UNICODE 544K mapped file 46.5M shared memory 4K =========== ======= TOTAL 1.5G
Attachments
Crash log on iPad Air (ipad 4,1) (44.16 KB, application/octet-stream)
2015-03-03 17:19 PST, EJ 		no flags
Details
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Simon Fraser (smfr)
Comment 1 2015-03-03 18:45:40 PST
I have't had a lot of luck reproducing this.
EJ
Comment 2 2015-03-04 08:30:48 PST
Simon were you able to try to replicate using iOS 8.1.x repro rate is still 50% on 7 out of 14 attempts i. Launch stage, sign in to any teacher account ii. Launch student-access page iii. Open any ebook for any student iv. If on page 1 swipe through the pages, waiting 1 second on each page before swiping to the next, until getting to end of book. Then start swiping backwards back towards page 1. Consider this 1 attempt. If you open the book to the last page (previously opened book), swipe backwards through the pages towards page 1, waiting 1 second on each page, then swipe forward through the pages back to the end of the book. Also consider this 1 attempt.
Daniel Bates
Comment 3 2015-07-10 21:47:21 PDT
(In reply to comment #0) > Issue has been reproduced on > [...] > iOS 8.2.5 > iOS 8.3 Are you able to reproduce this issue in iOS 8.4? > GO to https://www.storiaschool.com is iOS safari browser > user simon-fras7 > pw: webkit > These credentials have expired. In particular, when I try to sign in with these credentials I see the following message "Your school's subscription to Storia School Edition has expired." Assuming this issue still reproduces, can we please obtain new credentials to investigate this issue? > [...] > ----- iOS Simulator crash log ---- > Process: com.apple.WebKit.WebContent [1900] > [...] > > Thread 0 Crashed:: Dispatch queue: com.apple.main-thread > 0 com.apple.WebKit 0x0000000107c37c8f > WebKit::nextFocusableElement(WebCore::Node*, WebCore::Page*, bool) + 48 > 1 com.apple.WebKit 0x0000000107c37c32 > WebKit::WebPage::focusNextAssistedNode(bool) + 32 > 2 com.apple.WebKit 0x0000000107d46a7a > WebKit::WebPage::didReceiveWebPageMessage(IPC::Connection*, > IPC::MessageDecoder&) + 3972 > [...] This stack trace in comment 0 differs from the stack trace in the attached crash report (attachment #247821 [details]). I take it you produced both crashes by following the reproduction steps in comment 0?
Daniel Bates
Comment 4 2015-07-10 21:56:28 PDT
(In reply to comment #0) > ----- iOS Simulator crash log ---- > Process: com.apple.WebKit.WebContent [1900] > Path: > /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS > 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/ > WebKit.framework/XPCServices/com.apple.WebKit.WebContent.xpc/com.apple. > WebKit.WebContent > Identifier: com.apple.WebKit.WebContent > Version: 8600 (8600.1.4.11.10) > Code Type: X86-64 (Native) > Parent Process: launchd_sim [1855] > Responsible: launchd_sim [1855] > User ID: 704325551 > > Date/Time: 2015-03-03 20:01:30.599 -0500 > OS Version: Mac OS X 10.10.2 (14C109) > Report Version: 11 > Anonymous UUID: C1F1284C-47F6-6D14-975D-7E94DE2419DF > > > Time Awake Since Boot: 5800 seconds > > Crashed Thread: 0 Dispatch queue: com.apple.main-thread > > Exception Type: EXC_BAD_ACCESS (SIGSEGV) > Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000020 > > VM Regions Near 0x20: > --> > __TEXT 00000001076cb000-00000001076cd000 [ 8K] > r-x/r-x SM=COW /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS > 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/ > WebKit.framework/XPCServices/com.apple.WebKit.WebContent.xpc/com.apple. > WebKit.WebContent > > Application Specific Information: > CoreSimulator 117.5.4 - Device: iPad Air - Runtime: iOS 8.1 (12B411) - > DeviceType: iPad Air > > Thread 0 Crashed:: Dispatch queue: com.apple.main-thread > 0 com.apple.WebKit 0x0000000107c37c8f > WebKit::nextFocusableElement(WebCore::Node*, WebCore::Page*, bool) + 48 > 1 com.apple.WebKit 0x0000000107c37c32 > WebKit::WebPage::focusNextAssistedNode(bool) + 32 > 2 com.apple.WebKit 0x0000000107d46a7a This crash was fixed with the patch for bug #175549, which was committed in <http://trac.webkit.org/changeset/175549>.
Daniel Bates
Comment 5 2015-07-10 21:57:18 PDT
(In reply to comment #4) > This crash was fixed with the patch for bug #175549, which was committed in > <http://trac.webkit.org/changeset/175549>. *bug #138174
Simon Fraser (smfr)
Comment 6 2015-07-10 22:01:49 PDT
Is this crash still reproducible in the iOS 9 beta?
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