random crash & rebootings

Hello -

I have recently been the "victim" of an increasing number of crashes and reboots that I can't seem to pinpoint. I run Parallels and usually have that running so that may be a contributor but the crashes seem to be pretty randomized so I can't ascertain more info to be useful.

I copied and pasted the most recent error report below (from yesterday); hopefully someone can spot something and help me out; thanks in advance!

Process: com.apple.WebKit.WebContent [451]

Path: /System/Library/StagedFrameworks/Safari/WebKit.framework/Versions/A/XPCServices /com.apple.WebKit.WebContent.xpc/Contents/MacOS/com.apple.WebKit.WebContent

Identifier: com.apple.WebKit.WebContent

Version: 10601 (10601.1.56.2)

Build Info: WebKit2-7601001056002000~2

Code Type: X86-64 (Native)

Parent Process: ??? [1]

Responsible: Safari [369]

User ID: 502

Date/Time: 2015-10-08 17:19:02.872 -0400

OS Version: Mac OS X 10.10.5 (14F27)

Report Version: 11

Anonymous UUID: EDF92CA3-2E91-6ADD-7FA2-3CF4AA2A943D

Time Awake Since Boot: 12000 seconds

Crashed Thread: 15 Dispatch queue: com.apple.root.user-initiated-qos

Exception Type: EXC_BAD_INSTRUCTION (SIGILL)

Exception Codes: 0x0000000000000001, 0x0000000000000000

Application Specific Information:

API MISUSE: Resurrection of an object

Bundle controller class:

BrowserBundleController

Process Model:

Multiple Web Processes

Thread 0:: Dispatch queue: com.apple.main-thread

0 libsystem_kernel.dylib 0x00007fff836984de mach_msg_trap + 10

1 libsystem_kernel.dylib 0x00007fff8369764f mach_msg + 55

2 com.apple.CoreFoundation 0x00007fff8d4dbeb4 __CFRunLoopServiceMachPort + 212

3 com.apple.CoreFoundation 0x00007fff8d4db37b __CFRunLoopRun + 1371

4 com.apple.CoreFoundation 0x00007fff8d4dabd8 CFRunLoopRunSpecific + 296

5 com.apple.HIToolbox 0x00007fff8609456f RunCurrentEventLoopInMode + 235

6 com.apple.HIToolbox 0x00007fff860942ea ReceiveNextEventCommon + 431

7 com.apple.HIToolbox 0x00007fff8609412b _BlockUntilNextEventMatchingListInModeWithFilter + 71

8 com.apple.AppKit 0x00007fff827a38ab _DPSNextEvent + 978

9 com.apple.AppKit 0x00007fff827a2e58 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 346

10 com.apple.AppKit 0x00007fff82798af3 -[NSApplication run] + 594

11 com.apple.AppKit 0x00007fff82715244 NSApplicationMain + 1832

12 libxpc.dylib 0x00007fff8da88928 _xpc_objc_main + 793

13 libxpc.dylib 0x00007fff8da8a030 xpc_main + 490

14 com.apple.WebKit.WebContent 0x000000010839eb30 0x10839e000 + 2864

15 libdyld.dylib 0x00007fff8c20d5c9 start + 1

Thread 1:: Dispatch queue: com.apple.libdispatch-manager

0 libsystem_kernel.dylib 0x00007fff8369e232 kevent64 + 10

1 libdispatch.dylib 0x00007fff841eca6a _dispatch_mgr_thread + 52

Thread 2:

0 libsystem_kernel.dylib 0x00007fff836984de mach_msg_trap + 10

1 libsystem_kernel.dylib 0x00007fff8369764f mach_msg + 55

2 com.apple.CoreFoundation 0x00007fff8d4dbeb4 __CFRunLoopServiceMachPort + 212

3 com.apple.CoreFoundation 0x00007fff8d4db37b __CFRunLoopRun + 1371

4 com.apple.CoreFoundation 0x00007fff8d4dabd8 CFRunLoopRunSpecific + 296

5 com.apple.AppKit 0x00007fff8286b56b _NSEventThread + 137

6 libsystem_pthread.dylib 0x00007fff8180505a _pthread_body + 131

7 libsystem_pthread.dylib 0x00007fff81804fd7 _pthread_start + 176

8 libsystem_pthread.dylib 0x00007fff818023ed thread_start + 13

Thread 3:: JavaScriptCore::Marking

0 libsystem_kernel.dylib 0x00007fff8369d136 __psynch_cvwait + 10

1 libc++.1.dylib 0x00007fff8fec5c95 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 47

2 com.apple.JavaScriptCore 0x0000000108cd1b3b JSC::GCThread::waitForNextPhase() + 171

3 com.apple.JavaScriptCore 0x0000000108cd1998 JSC::GCThread::gcThreadMain() + 88

4 com.apple.JavaScriptCore 0x0000000108cc78f3 ***::threadEntryPoint(void*) + 179

5 com.apple.JavaScriptCore 0x0000000108cc781f ***::wtfThreadEntryPoint(void*) + 15

6 libsystem_pthread.dylib 0x00007fff8180505a _pthread_body + 131

7 libsystem_pthread.dylib 0x00007fff81804fd7 _pthread_start + 176

8 libsystem_pthread.dylib 0x00007fff818023ed thread_start + 13

Thread 4:: JavaScriptCore::Marking

0 libsystem_kernel.dylib 0x00007fff8369d136 __psynch_cvwait + 10

1 libc++.1.dylib 0x00007fff8fec5c95 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 47

2 com.apple.JavaScriptCore 0x0000000108cd1b3b JSC::GCThread::waitForNextPhase() + 171

3 com.apple.JavaScriptCore 0x0000000108cd1998 JSC::GCThread::gcThreadMain() + 88

4 com.apple.JavaScriptCore 0x0000000108cc78f3 ***::threadEntryPoint(void*) + 179

5 com.apple.JavaScriptCore 0x0000000108cc781f ***::wtfThreadEntryPoint(void*) + 15

6 libsystem_pthread.dylib 0x00007fff8180505a _pthread_body + 131

7 libsystem_pthread.dylib 0x00007fff81804fd7 _pthread_start + 176

8 libsystem_pthread.dylib 0x00007fff818023ed thread_start + 13

Thread 5:: JavaScriptCore::Marking

0 libsystem_kernel.dylib 0x00007fff8369d136 __psynch_cvwait + 10

1 libc++.1.dylib 0x00007fff8fec5c95 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 47

2 com.apple.JavaScriptCore 0x0000000108cd1b3b JSC::GCThread::waitForNextPhase() + 171

3 com.apple.JavaScriptCore 0x0000000108cd1998 JSC::GCThread::gcThreadMain() + 88

4 com.apple.JavaScriptCore 0x0000000108cc78f3 ***::threadEntryPoint(void*) + 179

5 com.apple.JavaScriptCore 0x0000000108cc781f ***::wtfThreadEntryPoint(void*) + 15

6 libsystem_pthread.dylib 0x00007fff8180505a _pthread_body + 131

7 libsystem_pthread.dylib 0x00007fff81804fd7 _pthread_start + 176

8 libsystem_pthread.dylib 0x00007fff818023ed thread_start + 13

Thread 6:: WebCore: Scrolling

0 libsystem_kernel.dylib 0x00007fff836984de mach_msg_trap + 10

1 libsystem_kernel.dylib 0x00007fff8369764f mach_msg + 55

2 com.apple.CoreFoundation 0x00007fff8d4dbeb4 __CFRunLoopServiceMachPort + 212

3 com.apple.CoreFoundation 0x00007fff8d4db37b __CFRunLoopRun + 1371

4 com.apple.CoreFoundation 0x00007fff8d4dabd8 CFRunLoopRunSpecific + 296

5 com.apple.CoreFoundation 0x00007fff8d592671 CFRunLoopRun + 97

6 com.apple.WebCore 0x00000001095763a4 WebCore::ScrollingThread::initializeRunLoop() + 244

7 com.apple.JavaScriptCore 0x0000000108cc78f3 ***::threadEntryPoint(void*) + 179

8 com.apple.JavaScriptCore 0x0000000108cc781f ***::wtfThreadEntryPoint(void*) + 15

9 libsystem_pthread.dylib 0x00007fff8180505a _pthread_body + 131

10 libsystem_pthread.dylib 0x00007fff81804fd7 _pthread_start + 176

11 libsystem_pthread.dylib 0x00007fff818023ed thread_start + 13

Thread 7:: DFG Worklist Worker Thread

0 libsystem_kernel.dylib 0x00007fff8369d136 __psynch_cvwait + 10

1 com.apple.JavaScriptCore 0x000000010902cc8b JSC::DFG::Worklist::runThread(JSC::DFG::ThreadData*) + 219

2 com.apple.JavaScriptCore 0x0000000108cc78f3 ***::threadEntryPoint(void*) + 179

3 com.apple.JavaScriptCore 0x0000000108cc781f ***::wtfThreadEntryPoint(void*) + 15

4 libsystem_pthread.dylib 0x00007fff8180505a _pthread_body + 131

5 libsystem_pthread.dylib 0x00007fff81804fd7 _pthread_start + 176

6 libsystem_pthread.dylib 0x00007fff818023ed thread_start + 13

Thread 8:: FTL Worklist Worker Thread

0 libsystem_kernel.dylib 0x00007fff8369d136 __psynch_cvwait + 10

1 com.apple.JavaScriptCore 0x000000010902cc8b JSC::DFG::Worklist::runThread(JSC::DFG::ThreadData*) + 219

2 com.apple.JavaScriptCore 0x0000000108cc78f3 ***::threadEntryPoint(void*) + 179

3 com.apple.JavaScriptCore 0x0000000108cc781f ***::wtfThreadEntryPoint(void*) + 15

4 libsystem_pthread.dylib 0x00007fff8180505a _pthread_body + 131

5 libsystem_pthread.dylib 0x00007fff81804fd7 _pthread_start + 176

6 libsystem_pthread.dylib 0x00007fff818023ed thread_start + 13

Thread 9:: FTL Worklist Worker Thread

0 libsystem_kernel.dylib 0x00007fff8369d136 __psynch_cvwait + 10

1 com.apple.JavaScriptCore 0x000000010902cc8b JSC::DFG::Worklist::runThread(JSC::DFG::ThreadData*) + 219

2 com.apple.JavaScriptCore 0x0000000108cc78f3 ***::threadEntryPoint(void*) + 179

3 com.apple.JavaScriptCore 0x0000000108cc781f ***::wtfThreadEntryPoint(void*) + 15

4 libsystem_pthread.dylib 0x00007fff8180505a _pthread_body + 131

5 libsystem_pthread.dylib 0x00007fff81804fd7 _pthread_start + 176

6 libsystem_pthread.dylib 0x00007fff818023ed thread_start + 13

Thread 10:: FTL Worklist Worker Thread

0 libsystem_kernel.dylib 0x00007fff8369d136 __psynch_cvwait + 10

1 com.apple.JavaScriptCore 0x000000010902cc8b JSC::DFG::Worklist::runThread(JSC::DFG::ThreadData*) + 219

2 com.apple.JavaScriptCore 0x0000000108cc78f3 ***::threadEntryPoint(void*) + 179

3 com.apple.JavaScriptCore 0x0000000108cc781f ***::wtfThreadEntryPoint(void*) + 15

4 libsystem_pthread.dylib 0x00007fff8180505a _pthread_body + 131

5 libsystem_pthread.dylib 0x00007fff81804fd7 _pthread_start + 176

6 libsystem_pthread.dylib 0x00007fff818023ed thread_start + 13

Thread 11:

0 libsystem_kernel.dylib 0x00007fff8369d136 __psynch_cvwait + 10

1 libc++.1.dylib 0x00007fff8fec5d2e std::__1::condition_variable::__do_timed_wait(std::__1::unique_lock<std::__1::m utex>&, std::__1::chrono::time_point<std::__1::chrono::system_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l> > >) + 126

2 com.apple.JavaScriptCore 0x0000000109305de3 std::__1::cv_status std::__1::condition_variable::wait_until<std::__1::chrono::steady_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l> > >(std::__1::unique_lock<std::__1::mutex>&, std::__1::chrono::time_point<std::__1::chrono::steady_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l> > > const&) + 131

3 com.apple.JavaScriptCore 0x0000000109305cb5 std::__1::cv_status std::__1::condition_variable_any::wait_until<std::__1::unique_lock<bmalloc::Mut ex>, std::__1::chrono::steady_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l> > >(std::__1::unique_lock<bmalloc::Mutex>&, std::__1::chrono::time_point<std::__1::chrono::steady_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l> > > const&) + 117

4 com.apple.JavaScriptCore 0x0000000109305c05 bmalloc::AsyncTask<bmalloc::Heap, void (bmalloc::Heap::*)()>::entryPoint() + 181

5 com.apple.JavaScriptCore 0x0000000109305b49 bmalloc::AsyncTask<bmalloc::Heap, void (bmalloc::Heap::*)()>::pthreadEntryPoint(void*) + 9

6 libsystem_pthread.dylib 0x00007fff8180505a _pthread_body + 131

7 libsystem_pthread.dylib 0x00007fff81804fd7 _pthread_start + 176

8 libsystem_pthread.dylib 0x00007fff818023ed thread_start + 13

Thread 12:: Dispatch queue: com.apple.audio.CADispatchQueue.SerialQueue

0 libobjc.A.dylib 0x00007fff84c9a0e9 objc_msgSend + 41

1 com.apple.audio.CoreAudio 0x00007fff8c2c2c41 HALC_ProxyObject::~HALC_ProxyObject() + 75

2 com.apple.audio.CoreAudio 0x00007fff8c2c2c86 HALC_ProxyObject::~HALC_ProxyObject() + 14

3 libdispatch.dylib 0x00007fff841ee323 _dispatch_call_block_and_release + 12

4 libdispatch.dylib 0x00007fff841e9c13 _dispatch_client_callout + 8

5 libdispatch.dylib 0x00007fff841ed365 _dispatch_queue_drain + 1100

6 libdispatch.dylib 0x00007fff841eeecc _dispatch_queue_invoke + 202

7 libdispatch.dylib 0x00007fff841ec6b7 _dispatch_root_queue_drain + 463

8 libdispatch.dylib 0x00007fff841fafe4 _dispatch_worker_thread3 + 91

9 libsystem_pthread.dylib 0x00007fff81804a9d _pthread_wqthread + 729

10 libsystem_pthread.dylib 0x00007fff818023dd start_wqthread + 13

Thread 13:

0 libsystem_kernel.dylib 0x00007fff8369d94a __workq_kernreturn + 10

1 libsystem_pthread.dylib 0x00007fff818023dd start_wqthread + 13

Thread 14:

0 libsystem_kernel.dylib 0x00007fff8369d94a __workq_kernreturn + 10

1 libsystem_pthread.dylib 0x00007fff818023dd start_wqthread + 13

Thread 15 Crashed:: Dispatch queue: com.apple.root.user-initiated-qos

0 libdispatch.dylib 0x00007fff841e997e _os_object_retain + 45

1 com.apple.audio.CoreAudio 0x00007fff8c2d6c8a std::__1::vector<CADispatchQueue::EventSource, std::__1::allocator<CADispatchQueue::EventSource> >::__swap_out_circular_buffer(std::__1::__split_buffer<CADispatchQueue::EventSo urce, std::__1::allocator<CADispatchQueue::EventSource>&>&) + 62

2 com.apple.audio.CoreAudio 0x00007fff8c298838 void std::__1::vector<CADispatchQueue::EventSource, std::__1::allocator<CADispatchQueue::EventSource> >::__push_back_slow_path<CADispatchQueue::EventSource>(CADispatchQueue::EventSo urce&&) + 246

3 com.apple.audio.CoreAudio 0x00007fff8c2986d0 CADispatchQueue::InstallMachPortDeathNotification(unsigned int, void () block_pointer) + 188

4 com.apple.audio.CoreAudio 0x00007fff8c2932f8 HALC_ProxyObject::HALC_ProxyObject(unsigned int, unsigned int, unsigned int, unsigned int) + 154

5 com.apple.audio.CoreAudio 0x00007fff8c2a008e HALC_ProxyObjectMap::_CreateObject(unsigned int, unsigned int, unsigned int, unsigned int) + 196

6 com.apple.audio.CoreAudio 0x00007fff8c292cea HALC_ProxyObjectMap::_CopyObjectByObjectID(unsigned int) + 248

7 com.apple.audio.CoreAudio 0x00007fff8c292b43 HALC_ProxyObjectMap::CopyObjectByObjectID(unsigned int) + 67

8 com.apple.audio.CoreAudio 0x00007fff8c2a68ac HALC_ShellDevice::RebuildControlList(bool) + 482

9 com.apple.audio.CoreAudio 0x00007fff8c2b4a7f HALC_ShellDevice::_ProxyObject_GroupPropertiesChanged(unsigned int, unsigned int, unsigned int const*, unsigned int, unsigned int const*, unsigned int, AudioObjectPropertyAddress const*) + 341

10 com.apple.audio.CoreAudio 0x00007fff8c2b491a ___ZN16HALC_ShellDevice34ProxyObject_GroupPropertiesChangedEjjPKjjS1_jPK26Audio ObjectPropertyAddress_block_invoke + 60

11 com.apple.audio.CoreAudio 0x00007fff8c2a2563 HALB_CommandGate::ExecuteCommand(void () block_pointer) const + 33

12 com.apple.audio.CoreAudio 0x00007fff8c2b48d8 HALC_ShellDevice::ProxyObject_GroupPropertiesChanged(unsigned int, unsigned int, unsigned int const*, unsigned int, unsigned int const*, unsigned int, AudioObjectPropertyAddress const*) + 102

13 com.apple.audio.CoreAudio 0x00007fff8c2b4805 ___ZN23HALC_ProxyNotifications27_SendGroupPropertiesChangedEjjPKjjS1_jPK26Audio ObjectPropertyAddressb_block_invoke + 77

14 libdispatch.dylib 0x00007fff841ee323 _dispatch_call_block_and_release + 12

15 libdispatch.dylib 0x00007fff841e9c13 _dispatch_client_callout + 8

16 libdispatch.dylib 0x00007fff841ec88f _dispatch_root_queue_drain + 935

17 libdispatch.dylib 0x00007fff841fafe4 _dispatch_worker_thread3 + 91

18 libsystem_pthread.dylib 0x00007fff81804a9d _pthread_wqthread + 729

19 libsystem_pthread.dylib 0x00007fff818023dd start_wqthread + 13

Thread 15 crashed with X86 Thread State (64-bit):

rax: 0x00007fa4db58370c rbx: 0x00007fa4db7271b0 rcx: 0x00007fff8420d41e rdx: 0x0000000000000008

rdi: 0x00007fa4db583700 rsi: 0x000000011043e880 rbp: 0x000000011043e870 rsp: 0x000000011043e848

r8: 0x00007fa4dc180a00 r9: 0x000000010b000000 r10: 0x000000005ecd58c4 r11: 0x00007fa3cb045468

r12: 0x000000011043e880 r13: 0x0000000000000200 r14: 0x00007fa4db728c70 r15: 0x00007fa4db7270d0

rip: 0x00007fff841e997e rfl: 0x0000000000010286 cr2: 0x00007fa4db721fbc

Logical CPU: 0

Error Code: 0x00000000

Trap Number: 6