Bug 142250 - [iOS] Crash in WebCore::RenderLayer::updateCompositingLayersAfterScroll() when using swipe gesture
Summary: [iOS] Crash in WebCore::RenderLayer::updateCompositingLayersAfterScroll() whe...
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: Layout and Rendering (show other bugs)
Version: 528+ (Nightly build)
Hardware: iPhone / iPad iOS 8.2
: P2 Normal
Assignee: Nobody
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-03-03 17:19 PST by EJ
Modified: 2020-09-02 02:40 PDT (History)
3 users (show)

See Also:


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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Description EJ 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 +libsystem_asl.dylib (267) <A0A1AA90-5B6A-351B-B3D0-0E08329C43C7> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_asl.dylib
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       0x109ae8000 -        0x109aeeff7 +libunwind_sim.dylib (126.2) <BE0D0D9B-A792-3614-89DD-750B0473AE7D> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libunwind_sim.dylib
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       0x109b82000 -        0x109b8bfff  libsystem_pthread.dylib (105.10.1) <3103AA7F-3BAE-3673-9649-47FFD7E15C97> /usr/lib/system/libsystem_pthread.dylib
       0x109b97000 -        0x109c7ffff +libsqlite3.dylib (162) <48C3DDDE-36AF-3BD8-BED1-AF40F4EE8FB6> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libsqlite3.dylib
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       0x11180e000 -        0x111844fff  com.apple.TextInput (1.0) <C0FD1170-E104-3E5D-940E-55E1FC271478> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/TextInput.framework/TextInput
       0x11187e000 -        0x111958ff7  com.apple.ProofReader (2.2.1 - 266.2) <A2D7DDD7-A8C7-3A73-A45C-A995956BEE01> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/ProofReader.framework/ProofReader
       0x111987000 -        0x111993fff +libAccessibility.dylib (1541.6.8) <FFA42D8B-4CFE-3669-8781-34218BBB1A7D> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libAccessibility.dylib
       0x1119a3000 -        0x1119f4ff7  com.apple.framework.PrintKit (175 - 175) <9B13671F-DB89-3DA6-AC3B-A80F5CAB2A24> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/PrintKit.framework/PrintKit
       0x111a1d000 -        0x111a81fff  com.apple.PhysicsKit (1.0 - 1) <9FD0A27E-585C-31A6-A5D2-5C375E363E9D> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/PhysicsKit.framework/PhysicsKit
       0x111aae000 -        0x111ef0fff  com.apple.vision.FaceCore (3.1.6 - 3.1.6) <E3C7BCD4-AA62-365C-B946-EA239BF3F8FA> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/FaceCore.framework/FaceCore
       0x112108000 -        0x11227dff7 +libFosl_dynamic.dylib (15.11) <BE459168-E9DC-3DB0-9212-E9B24814A3BB> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libFosl_dynamic.dylib
       0x1122ff000 -        0x11238dff7  com.apple.AddressBook (1.0 - 30) <C20560BD-0672-3F52-B3D3-F0923379CE63> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/AddressBook.framework/AddressBook
       0x1123e2000 -        0x1123f1fff  com.apple.commonutilities (8.0 - 900) <80EC0288-D179-3963-91ED-613A27520F33> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/CommonUtilities.framework/CommonUtilities
       0x1123fe000 -        0x112402ff7  com.apple.communicationsfilter (10.0 - 1000) <792101F4-983D-3B01-AAF3-9538F034D601> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/CommunicationsFilter.framework/CommunicationsFilter
       0x112409000 -        0x1124c0ff7  com.apple.coretelephony (113 - 2338) <AB291A1F-55A1-39A4-929E-A860980CDDD5> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreTelephony.framework/CoreTelephony
       0x112529000 -        0x1125a0fff  com.apple.imfoundation (10.0 - 1000) <4193D126-C3F6-395D-A2AC-0AEEB48AB52A> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/IMFoundation.framework/IMFoundation
       0x1125ea000 -        0x112620ff7  com.apple.Accounts (113 - 113) <8C48188B-37BA-3637-BB20-A7B7A288CD5C> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/Accounts.framework/Accounts
       0x11264a000 -        0x11264ffff  com.apple.AggregateDictionary (1.0 - 1) <F439530D-FE65-36A2-9F45-DB10D6350BD1> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/AggregateDictionary.framework/AggregateDictionary
       0x112656000 -        0x112682ff7  com.apple.dataaccess.dataaccessexpress.framework (1.0 - 1.0) <DF33869B-CBB7-3927-8D0B-5CC1A1D065C4> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/DataAccessExpress.framework/DataAccessExpress
       0x1126a7000 -        0x112928ff7 +CoreData (519) <CBAF3F43-F742-3A5E-A8CD-B4E4DA61D82A> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreData.framework/CoreData
       0x112a4f000 -        0x112a52fff  com.apple.OAuth (25 - 25) <0C76E4E8-FD37-3DE7-A275-00C7C2B2FD7A> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/OAuth.framework/OAuth
       0x112a58000 -        0x112a91fff +libtidy.A.dylib (15.14) <EE376042-5D5A-3134-9F2A-34B2B71DC5B1> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libtidy.A.dylib
       0x112aa1000 -        0x112aa8ff7  com.apple.datamigration (1.0 - 1.0) <3EB8DCB2-6B1D-38A7-9A8B-1A1E89DC008B> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/DataMigration.framework/DataMigration
       0x112ab3000 -        0x112ae4fff +libTelephonyUtilDynamic.dylib (802.1) <18C1EBBE-6F3E-33A2-8B2F-7B7F230554D3> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libTelephonyUtilDynamic.dylib
       0x112b17000 -        0x112b44ff7 +libxslt.1.dylib (13) <0ED169A0-B91B-3726-9146-02113FE5D06A> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libxslt.1.dylib
       0x112b51000 -        0x112b9dff7  com.apple.LanguageModeling (1.0 - 1) <E26E4D1C-6C0D-3139-AC9E-98EBDF609BDF> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/LanguageModeling.framework/LanguageModeling
       0x112bad000 -        0x112bc1fff +libcmph.dylib (4) <8585FC35-81DE-38DE-8FF0-195F440DBFD9> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libcmph.dylib
       0x112bd0000 -        0x112bd8fff  com.apple.MediaAccessibility (1.0 - 61) <E64FE9F8-6154-32AA-BA12-9FF1F6A4ACA4> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/MediaAccessibility.framework/MediaAccessibility
       0x112be3000 -        0x112cd8fff +libiconv.2.dylib (42) <17CC9CF4-E968-3635-9401-83EB44E0830F> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libiconv.2.dylib
       0x112ce8000 -        0x112d08ff7 +libresolv.9.dylib (57) <CC8356EB-159F-348D-8AF9-6A74263B3E62> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libresolv.9.dylib
       0x112d12000 -        0x112d31fff  com.apple.AssetsLibraryServices (1.0 - 1) <FD5B4AC0-5AE1-392E-93F1-DBB83C3F88BE> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/AssetsLibraryServices.framework/AssetsLibraryServices
       0x112d51000 -        0x112f1bfff  com.apple.avfoundation (2.0 - 887.50) <49EF1C61-04B9-32B2-88F3-C7AC8902D2A3> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/AVFoundation.framework/AVFoundation
       0x1130a7000 -        0x113118ff7 +libAVFAudio.dylib (117.3) <9BC29AFE-E795-3BDA-BCA5-A3526DADA63B> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/AVFoundation.framework/libAVFAudio.dylib
       0x113168000 -        0x113429ff7  com.apple.MediaToolbox (1.0 - 1560.67) <677CD29F-E1CE-3E25-8F6E-96DB7BDA6889> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/MediaToolbox.framework/MediaToolbox
       0x11351d000 -        0x113557ff7  com.apple.Celestial (1.0 - 1560.67) <CA07048A-B3D9-3779-94EA-E3906E6588B6> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/Celestial.framework/Celestial
       0x1135a3000 -        0x1135a8fff +Apple-Inc.BTLEAudioController (1.0 - 1) <13362CF9-2A09-3F8F-BDEB-151D0C7EB400> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/BTLEAudioController.framework/BTLEAudioController
       0x1139ac000 -        0x1139adff7  com.apple.WebProcessLoader.axbundle (1.0 - 1.0) <CDDD7E4D-64B2-3C92-A3DC-A2B7AE0556FD> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/AccessibilityBundles/WebProcessLoader.axbundle/WebProcessLoader
       0x1139b3000 -        0x1139d1ff7  com.apple.mobilesafari.Safari (1.0 - 1) <C81D7C4D-88FF-3964-A8F7-3E2D3F0FDADC> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/Applications/MobileSafari.app/Safari.wkbundle/Safari
       0x1139e5000 -        0x1139ecfff  com.apple.CertUI (1.0 - 1) <335160B6-A86F-37A7-9ADB-159A2A0C7E2A> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/CertUI.framework/CertUI
       0x1139f9000 -        0x1139f9ff7  com.apple.datadetectors.plugins.phone (5.0 - 396) <85FD8DA2-50FA-3BF6-8597-4AF66E85C23C> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/DataDetectorsCore.framework/PlugIns/PhoneNumbers.plugin/PhoneNumbers
       0x1160c0000 -        0x11622aff7  com.apple.WebUI (1.0 - 1.0) <02F44C67-84CF-33CF-B8C6-B09D93D3D096> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/WebUI.framework/WebUI
       0x1162fe000 -        0x1163aeff7  com.apple.cloudkit.CloudKit (259.6 - 259.6) <D377D1A2-09B8-3034-A751-122508C80F4A> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CloudKit.framework/CloudKit
       0x116434000 -        0x11649aff7  com.apple.corelocation (1.0 - 1753.17) <EED8996D-1EAA-3F79-8669-C6648DBBF9E2> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreLocation.framework/CoreLocation
       0x1164ba000 -        0x11658cfff  com.apple.managedconfiguration (1.0 - 1.0) <278580E7-306A-3AD0-9F64-C02F4A67CDB9> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/ManagedConfiguration.framework/ManagedConfiguration
       0x11661c000 -        0x116636ff7  com.apple.aps.framework (4.0 - 4.0) <400D5563-C022-37E3-91C5-62AC37776DB1> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/ApplePushService.framework/ApplePushService
       0x11664e000 -        0x11697dff7  com.apple.GeoServices (1.0 - 982.24) <B4568060-4ABD-3268-A6C1-034B1CEDA987> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/GeoServices.framework/GeoServices
       0x116b8b000 -        0x116bafff7  com.apple.CoreBluetooth (1.0 - 1) <EED5395E-29CE-3751-88EB-B4B8C4ECBE32> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreBluetooth.framework/CoreBluetooth
       0x116bcf000 -        0x116bdffff  com.apple.ProtocolBuffer (1 - 225) <B60F670B-3C6A-3552-9B43-84486155335C> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/ProtocolBuffer.framework/ProtocolBuffer
       0x116bed000 -        0x116bf4fff  com.apple.BluetoothManager (1.0 - 1) <B33EB8A8-E5E3-308D-ADB3-AC7856494339> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/BluetoothManager.framework/BluetoothManager
       0x116bff000 -        0x116c0bfff  com.apple.MobileBluetooth (1.0 - 1.0) <E2E28595-14F8-3F54-809F-E7EE82E1D1B4> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/MobileBluetooth.framework/MobileBluetooth
       0x116c14000 -        0x116c3dfff  com.apple.persistentconnection (1.0 - 1.0) <2B2F1382-915B-3345-8F9C-3C249A6B5D75> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/PersistentConnection.framework/PersistentConnection
       0x11703b000 -        0x117180ff7  com.apple.RawCamera.bundle (1.0.3 - 30) <63B38CFF-E8C6-3D95-994D-32C370019395> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/CoreServices/RawCamera.bundle/RawCamera
       0x1171a9000 -        0x1171c5fff  com.apple.GenerationalStorage (2.0 - 223) <49CA1AA3-57AD-353B-8266-0CDF9F6FA135> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/GenerationalStorage.framework/GenerationalStorage
       0x1171da000 -        0x1171e3fff  com.apple.xpcobjects (1.0 - 1) <B90C7B06-ACB2-3007-AB35-A7F982687886> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/XPCObjects.framework/XPCObjects
       0x1171ef000 -        0x117218ff7  com.apple.ChunkingLibrary (2.1 - 163.1) <4B5455E2-EEB9-36C7-9E67-9CC431A92D38> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/ChunkingLibrary.framework/ChunkingLibrary
       0x1172a9000 -        0x117316ff7  com.apple.QuickLook (2.0 - 497.1) <32745539-71AB-3365-AEDB-9CB0611EE0B2> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/QuickLook.framework/QuickLook
       0x11736d000 -        0x117590ff7  com.apple.MediaPlayer (1.0) <D556EE6F-4247-3B69-BA35-2DCC3E3BDB2E> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/MediaPlayer.framework/MediaPlayer
       0x11771b000 -        0x117730ff7  com.apple.MediaServices (1.0 - 1) <E2EF63C0-5DED-332E-BFB4-FB7A7BE4DD0B> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/MediaServices.framework/MediaServices
       0x117748000 -        0x117791fff  com.apple.itunesstore (1.0) <C431DB4E-80AB-3D67-9D8F-C18641954C96> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/iTunesStore.framework/iTunesStore
       0x1177d5000 -        0x117968fff  com.apple.MusicLibrary (1.0.0 - 18) <E01D1797-242E-3067-9314-2FD0E52E1647> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/MusicLibrary.framework/MusicLibrary
       0x117a45000 -        0x117b67ff7 +StoreServices (1243.8) <BD94F6B9-D97C-3B1E-A58D-9A68A99F134F> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/StoreServices.framework/StoreServices
       0x117c62000 -        0x117c7bfff  com.apple.MediaRemote (1.0 - 1) <2A51CF78-CF32-3ED6-B39F-AFC3A68377EF> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/MediaRemote.framework/MediaRemote
       0x117c96000 -        0x117cfaff7  com.apple.HomeSharing (1.0 - 1) <D0EF9C10-9BBC-32C2-8314-B2C02D204D86> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/HomeSharing.framework/HomeSharing
       0x117d41000 -        0x117d4cff7  com.apple.MobileInstallation (2.0 - 1.0) <F4A35532-99AD-3BC8-8E48-CCE86920773F> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/MobileInstallation.framework/MobileInstallation
       0x117d57000 -        0x117d5bfff  com.apple.MobileSystemServices (1.0 - 1) <D97F6B40-D166-3796-AFC3-CD5CBF1D0D68> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/MobileSystemServices.framework/MobileSystemServices
       0x117d62000 -        0x117d6bfff  com.apple.DAAPKit (1.0 - 1) <7715D757-09D5-3E73-8E57-DE8D3178D631> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/DAAPKit.framework/DAAPKit
       0x1181c0000 -        0x1181daff7  com.apple.webcontentfilter.framework (5.1 - 5.1) <8B409723-9EDC-361B-9CB0-77B1E72454A0> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/WebContentAnalysis.framework/WebContentAnalysis
       0x1181f3000 -        0x11821eff7  com.apple.speech.LatentSemanticMappingFramework (2.11.9 - 2.11.9) <11F31DA3-9961-3F17-8FA3-718E9FF41F18> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/LatentSemanticMapping.framework/LatentSemanticMapping
       0x1182cb000 -        0x1182f4fff +libRIP.A.dylib (747.1) <82043E43-1A60-35F7-9BA2-C0C55619425B> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreGraphics.framework/Resources/libRIP.A.dylib
       0x118303000 -        0x118312ff7 +libCMSBuiltin.A.dylib (747.1) <B270F143-9E3F-308D-8A2B-6586AD2FCB99> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreGraphics.framework/Resources/libCMSBuiltin.A.dylib
       0x1184a9000 -        0x1184b3ff7 +libMobileGestaltExtensions.dylib (297.1.14) <DD34395A-2F84-3646-80B8-215C8223B572> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libMobileGestaltExtensions.dylib
       0x1184bb000 -        0x1184c7fff +libGSFontCache.dylib (206.81) <6CD3D3E4-6C6C-3ADE-AA90-E2C06B66D278> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/FontServices.framework/libGSFontCache.dylib
       0x1185bf000 -        0x1185c5fff  com.apple.ConstantClasses (1.0 - 1) <C98A9DEE-F31C-3399-BD87-2DEBEA92F025> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/ConstantClasses.framework/ConstantClasses
       0x118762000 -        0x118765fff +libCGXType.A.dylib (747.1) <D198A40A-A2D8-3E6A-AADC-F771BCCF1EE7> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreGraphics.framework/Resources/libCGXType.A.dylib
       0x118a02000 -        0x118a23ff7  com.apple.datadetectorscore (5.0 - 396) <40199A59-AFDE-3618-991F-E1F14280F77E> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/DataDetectorsCore.framework/DataDetectorsCore
       0x11a99a000 -        0x11a9c8ff7  com.apple.CoreServicesInternal (220 - 220) <342B00EA-30C8-3567-A556-008EF7965212> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 8.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/CoreServicesInternal.framework/CoreServicesInternal
       0x11fc3f000 -        0x11fc88ff7  com.apple.CloudDocs (1.0 - 269.15) <1ADDFA71-2A6D-36DE-8673-30B8426B1E55> /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 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
Comment 1 Simon Fraser (smfr) 2015-03-03 18:45:40 PST
I have't had a lot of luck reproducing this.
Comment 2 EJ 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.
Comment 3 Daniel Bates 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?
Comment 4 Daniel Bates 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>.
Comment 5 Daniel Bates 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
Comment 6 Simon Fraser (smfr) 2015-07-10 22:01:49 PDT
Is this crash still reproducible in the iOS 9 beta?