Hi all,
A user reported our app "froze" and had to be force quit, and provided this
trace from the crash report.
It looks to me to be a classic thread deadlock in the bowels of the kernel -
can anyone comment? Is there anything we can do about this sort of thing, or
just file a bug and hope?
--Graham
Report (significantly truncated for size)
OS Version: 10.7.3 (Build 11D50b)
Architecture: x86_64
Report Version: 9
Parent: launchd [150]
PID: 1135
Event: hang
Duration: 5.24s
Steps: 51 (100ms sampling interval)
51 -[NSMenu
_populateFromDelegateWithEventRef:] + 213 (in AppKit) [0x7fff8ba8dd7f]
51
-[NSDocumentControllerOpenRecentMenuDelegate updateMenu:withEvent:withFlags:] +
45 (in AppKit) [0x7fff8bb102c3]
51
-[NSDocumentController(NSInternal) _populateOpenRecentMenu:includingIcons:] +
111 (in AppKit) [0x7fff8bced0ab]
51
-[NSDocumentController(NSPrivate) _recentDocumentURLsForKey:] + 146 (in AppKit)
[0x7fff8bcf1813]
51 -[NSDocumentController
_notePendingRecentDocumentURLsForKey:] + 75 (in AppKit) [0x7fff8bce4f94]
51 -[NSDocumentController
maximumRecentDocumentCount] + 169 (in AppKit) [0x7fff8bb5935a]
51 _LSGetRecentItemCount +
55 (in LaunchServices) [0x7fff9397a330]
51
LSSharedFileListCopyProperty + 219 (in LaunchServices) [0x7fff9397a4f9]
51 _SFLGetMaxItemCount
+ 25 (in OSServices) [0x7fff8e83e287]
51
__psynch_mutexwait + 10 (in libsystem_kernel.dylib) [0x7fff8eae6bf2]
Kernel stack:
51 lo64_unix_scall + 23 (in mach_kernel) [0x2e4977]
51 unix_syscall64 + 554 (in mach_kernel) [0x5f166a]
51 psynch_mutexwait + 1450 (in mach_kernel) [0x5c4cba]
51 ksyn_block_thread_locked + 77 (in mach_kernel) [0x5beddd]
51 thread_block + 33 (in mach_kernel) [0x22f771]
51 thread_block_reason + 331 (in mach_kernel) [0x22f62b]
51 thread_continue + 1729 (in mach_kernel) [0x22f3a1]
51 machine_switch_context + 582 (in mach_kernel) [0x2cba26]
Thread 0x65b57 DispatchQueue 2
User stack:
51 _dispatch_mgr_thread + 54 (in libdispatch.dylib) [0x7fff89b9e14e]
51 kevent + 10 (in libsystem_kernel.dylib) [0x7fff8eae77e6]
Kernel stack:
51 kqueue_scan + 480 (in mach_kernel) [0x559740]
Thread 0x66e05
User stack:
51 thread_start + 13 (in libsystem_c.dylib) [0x7fff8b6f0b75]
51 _pthread_start + 335 (in libsystem_c.dylib) [0x7fff8b6ed8bf]
51 __NSThread__main__ + 1575 (in Foundation) [0x7fff8feb06c6]
51 -[NSThread main] + 68 (in Foundation) [0x7fff8feb074e]
51 kevent + 10 (in libsystem_kernel.dylib) [0x7fff8eae77e6]
Kernel stack:
51 kqueue_scan + 480 (in mach_kernel) [0x559740]
Thread 0x78af7
User stack:
46 start_wqthread + 13 (in libsystem_c.dylib) [0x7fff8b6f0b85]
46 __workq_kernreturn + 10 (in libsystem_kernel.dylib) [0x7fff8eae7192]
Kernel stack:
46 workqueue_exit + 1808 (in mach_kernel) [0x5c6150]
Thread 0x78af8
User stack:
46 start_wqthread + 13 (in libsystem_c.dylib) [0x7fff8b6f0b85]
46 __workq_kernreturn + 10 (in libsystem_kernel.dylib) [0x7fff8eae7192]
Kernel stack:
46 workqueue_exit + 1808 (in mach_kernel) [0x5c6150]
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