Which way is the call stack in a crash log? I've got a crash log from
com.apple.dock.extra that is:
Process: com.apple.dock.extra [466]
Path:
/System/Library/CoreServices/Dock.app/Contents/XPCServices/com.apple.dock.extra.xpc/Contents/MacOS/com.apple.dock.extra
Identifier: com.apple.dock.extra
Version: 1.0 (1)
Build Info: Dock-1168009000000000~1
Code Type: X86-64 (Native)
Parent Process: ??? [1]
User ID: 501
Date/Time: 2016-07-23 22:02:38.404 -0500
OS Version: Mac OS X 10.8.5 (12F2560)
Report Version: 10
Interval Since Last Report: 10232 sec
Crashes Since Last Report: 2
Per-App Interval Since Last Report: 10232 sec
Per-App Crashes Since Last Report: 2
Anonymous UUID: DBFAB220-E500-AA92-29CA-A629725D5487
Crashed Thread: 0 Dispatch queue:
com.apple.dock.extra.peer.0x7fbaa90309d0.xpcq
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000018
VM Regions Near 0x18:
-->
__TEXT 0000000104f6a000-0000000104f6f000 [ 20K] r-x/rwx
SM=COW
/System/Library/CoreServices/Dock.app/Contents/XPCServices/com.apple.dock.extra.xpc/Contents/MacOS/com.apple.dock.extra
Thread 0 Crashed:: Dispatch queue: com.apple.dock.extra.peer.0x7fbaa90309d0.xpcq
0 libobjc.A.dylib 0x00007fff8d99e498 objc_msgSend_vtable3
+ 24
1 com.apple.Foundation 0x00007fff9524b2e7 -[NSBundle
loadAndReturnError:] + 646
2 com.apple.Foundation 0x00007fff9524b05c -[NSBundle load] + 19
3 com.apple.Foundation 0x00007fff9524bc64 -[NSBundle
principalClass] + 39
4 com.apple.dock.extra 0x0000000104f6becc 0x104f6a000 + 7884
5 com.apple.dock.extra 0x0000000104f6c7c7 0x104f6a000 + 10183
6 libxpc.dylib 0x00007fff946e64a2
_xpc_connection_recv_message + 699
7 libxpc.dylib 0x00007fff946e616d
_xpc_connection_wakeup_recv + 165
8 libxpc.dylib 0x00007fff946e48b4
_xpc_connection_wakeup2 + 1799
9 libxpc.dylib 0x00007fff946e417c
_xpc_connection_wakeup + 145
10 libdispatch.dylib 0x00007fff929dd0b6
_dispatch_client_callout + 8
11 libdispatch.dylib 0x00007fff929df29b
_dispatch_source_invoke + 691
12 libdispatch.dylib 0x00007fff929de305
_dispatch_queue_invoke + 72
13 libdispatch.dylib 0x00007fff929de448
_dispatch_queue_drain + 180
14 libdispatch.dylib 0x00007fff929de2f1
_dispatch_queue_invoke + 52
15 libdispatch.dylib 0x00007fff929e2091
_dispatch_main_queue_callback_4CF + 220
16 com.apple.CoreFoundation 0x00007fff93192b4c __CFRunLoopRun + 1644
17 com.apple.CoreFoundation 0x00007fff931920e2 CFRunLoopRunSpecific
+ 290
18 com.apple.HIToolbox 0x00007fff94e9eeb4
RunCurrentEventLoopInMode + 209
19 com.apple.HIToolbox 0x00007fff94e9ec52
ReceiveNextEventCommon + 356
20 com.apple.HIToolbox 0x00007fff94e9eae3
BlockUntilNextEventMatchingListInMode + 62
21 com.apple.AppKit 0x00007fff91cb7533 _DPSNextEvent + 685
22 com.apple.AppKit 0x00007fff91cb6df2 -[NSApplication
nextEventMatchingMask:untilDate:inMode:dequeue:] + 128
23 com.apple.AppKit 0x00007fff91cae1a3 -[NSApplication run]
+ 517
24 com.apple.AppKit 0x00007fff91c52bd6 NSApplicationMain +
869
25 com.apple.XPCService 0x00007fff92a6ad15 xpc_service_main +
433
26 com.apple.dock.extra 0x0000000104f6b744 0x104f6a000 + 5956
Thread 1:: Dispatch queue: com.apple.libdispatch-manager
0 libsystem_kernel.dylib 0x00007fff94751d16 kevent + 10
1 libdispatch.dylib 0x00007fff929dfdea _dispatch_mgr_invoke
+ 883
2 libdispatch.dylib 0x00007fff929df9ee _dispatch_mgr_thread
+ 54
Thread 2:
0 libsystem_kernel.dylib 0x00007fff947516d6 __workq_kernreturn +
10
1 libsystem_c.dylib 0x00007fff944b1f1c
_pthread_workq_return + 25
2 libsystem_c.dylib 0x00007fff944b1ce3 _pthread_wqthread +
412
3 libsystem_c.dylib 0x00007fff9449c191 start_wqthread + 13
[snip]
Is "0" the top of the call stack (i.e. the most recently called
method/function), or the bottom (where the call would eventually unwind, had it
not crashed.) Also, does the dump for the non-main threads really help out here
(in general), or is this usually a red herring?
FWIW, this is on MacOS X 10.8.5
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