我有一个带有 GUI 的 macOS 应用程序，它运行 24/7 并且截至上周完美运行。三天前，我在 2012 年底将我的 Mac mini 更新为 macOS Catalina。我再次启动了我的应用程序并且它有效。第二天早上，我遇到了一个 EXC_BAD_ACCESS 错误，导致应用程序崩溃(有关更多信息，请参见下文)。重新启动应用程序，第二天早上和今天早上再次出现错误。
背景:我不认为硬件会产生任何影响，因为它从来都不是问题，但仍然:我连接了一个显示器，通过连接的电源插头在晚上关闭并在早上再次打开。
这是错误:
CVDisplayLink (989): EXC_BAD_ACCESS (code=1, address=0x40)
在崩溃前的日志中，这条消息出现了大约 50 次，不确定它是否与崩溃本身有关:
CVCGDisplayLink::setCurrentDisplay didn't find a valid display - falling back to 60Hz
和
Could not start the display link: -6661
我附上了一个带有问题线程和最后命令的屏幕截图。我没有找到与我的代码的任何联系......该应用程序总是在完全相同的位置崩溃(我认为)。
非常感谢任何帮助!我的下一步是在夜间打开显示器，看看错误是否再次出现。即使没有，那也不是解决方案，因为我希望显示器在夜间和其他时间 sleep ......
这是一个崩溃报告:
Process: FIPS [29505]
Path: /Applications/FIPS.app/Contents/MacOS/FIPS
Identifier: xxx.xxxxxxxx.FIPS
Version: 1.0 (1)
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: FIPS [29505]
User ID: 502
Date/Time: 2020-03-29 23:28:13.101 +0200
OS Version: Mac OS X 10.15.4 (19E266)
Report Version: 12
Anonymous UUID: 571E7574-0586-B5D1-F56D-FDC0D2261660
Time Awake Since Boot: 86000 seconds
System Integrity Protection: enabled
Crashed Thread: 17 CVDisplayLink
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000040
Exception Note: EXC_CORPSE_NOTIFY
Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: exc handler [29505]
VM Regions Near 0x40:
-->
__TEXT 000000010510d000-000000010517f000 [ 456K] r-x/r-x SM=COW /Applications/FIPS.app/Contents/MacOS/FIPS
Thread 0:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x00007fff6f55fdfa mach_msg_trap + 10
1 libsystem_kernel.dylib 0x00007fff6f560170 mach_msg + 60
2 com.apple.SkyLight 0x00007fff646fa418 SLSCopyManagedDisplayForSpace + 225
3 com.apple.AppKit 0x00007fff329ccc68 _NSDisplayUUIDForSpace + 42
4 com.apple.AppKit 0x00007fff33137f50 -[_NSFullScreenSpace screen] + 47
5 com.apple.AppKit 0x00007fff326a4b7e +[_NSFullScreenSpace visibleFullScreenSpaceOnScreen:] + 312
6 com.apple.AppKit 0x00007fff326a49fa -[NSScreen _menuBarHeight] + 76
7 com.apple.AppKit 0x00007fff326a4998 -[NSScreen _layoutFrame] + 71
8 com.apple.AppKit 0x00007fff326e314a -[NSScreen visibleFrame] + 44
9 com.apple.AppKit 0x00007fff326e23b6 -[NSWindow(NSWindowResizing) _resizableEdgesForGrowing:shrinking:] + 587
10 com.apple.AppKit 0x00007fff3287100b -[NSWindow(NSWindowResizing) _resizeDirectionForMouseLocation:] + 225
11 com.apple.AppKit 0x00007fff32870e86 -[NSWindow(NSWindowResizing) _edgeResizingCursorUpdate:atLocation:] + 227
12 com.apple.AppKit 0x00007fff32870a22 -[NSWindow(NSCursorRects) _setCursorForMouseLocation:] + 179
13 com.apple.AppKit 0x00007fff32781599 _NSWindowDisplayCycleUpdateStructuralRegions + 571
14 com.apple.AppKit 0x00007fff3277bcc4 __NSWindowGetDisplayCycleObserverForUpdateStructuralRegions_block_invoke + 420
15 com.apple.AppKit 0x00007fff32773e52 NSDisplayCycleObserverInvoke + 155
16 com.apple.AppKit 0x00007fff327739dc NSDisplayCycleFlush + 937
17 com.apple.QuartzCore 0x00007fff40f07454 CA::Transaction::run_commit_handlers(CATransactionPhase) + 106
18 com.apple.QuartzCore 0x00007fff40f06166 CA::Transaction::commit() + 230
19 com.apple.AppKit 0x00007fff3282fa01 __62+[CATransaction(NSCATransaction) NS_setFlushesWithDisplayLink]_block_invoke + 266
20 com.apple.AppKit 0x00007fff32f4e950 ___NSRunLoopObserverCreateWithHandler_block_invoke + 41
21 com.apple.CoreFoundation 0x00007fff3542402c __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
22 com.apple.CoreFoundation 0x00007fff35423f5c __CFRunLoopDoObservers + 457
23 com.apple.CoreFoundation 0x00007fff354234f4 __CFRunLoopRun + 884
24 com.apple.CoreFoundation 0x00007fff35422b23 CFRunLoopRunSpecific + 466
25 com.apple.HIToolbox 0x00007fff34044abd RunCurrentEventLoopInMode + 292
26 com.apple.HIToolbox 0x00007fff340447d5 ReceiveNextEventCommon + 584
27 com.apple.HIToolbox 0x00007fff34044579 _BlockUntilNextEventMatchingListInModeWithFilter + 64
28 com.apple.AppKit 0x00007fff3268fc99 _DPSNextEvent + 883
29 com.apple.AppKit 0x00007fff3268e4e0 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1352
30 com.apple.AppKit 0x00007fff326801ee -[NSApplication run] + 658
31 com.apple.AppKit 0x00007fff32651ff6 NSApplicationMain + 777
32 xxx.xxxxxxx.FIPS 0x000000010510fb49 main + 9 (AppDelegate.swift:12)
33 libdyld.dylib 0x00007fff6f41ecc9 start + 1
Thread 1:: JavaScriptCore bmalloc scavenger
0 libsystem_kernel.dylib 0x00007fff6f562882 __psynch_cvwait + 10
1 libsystem_pthread.dylib 0x00007fff6f627425 _pthread_cond_wait + 698
2 libc++.1.dylib 0x00007fff6c6fa623 std::__1::condition_variable::__do_timed_wait(std::__1::unique_lock<std::__1::mutex>&, std::__1::chrono::time_point<std::__1::chrono::system_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l> > >) + 93
3 com.apple.JavaScriptCore 0x00007fff39c42a75 bmalloc::Scavenger::threadRunLoop() + 741
4 com.apple.JavaScriptCore 0x00007fff39c42489 bmalloc::Scavenger::threadEntryPoint(bmalloc::Scavenger*) + 9
5 com.apple.JavaScriptCore 0x00007fff39c44b67 void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (*)(bmalloc::Scavenger*), bmalloc::Scavenger*> >(void*) + 39
6 libsystem_pthread.dylib 0x00007fff6f627109 _pthread_start + 148
7 libsystem_pthread.dylib 0x00007fff6f622b8b thread_start + 15
Thread 2:: com.apple.NSURLConnectionLoader
0 libsystem_kernel.dylib 0x00007fff6f55fdfa mach_msg_trap + 10
1 libsystem_kernel.dylib 0x00007fff6f560170 mach_msg + 60
2 com.apple.CoreFoundation 0x00007fff35424bf7 __CFRunLoopServiceMachPort + 247
3 com.apple.CoreFoundation 0x00007fff354236b1 __CFRunLoopRun + 1329
4 com.apple.CoreFoundation 0x00007fff35422b23 CFRunLoopRunSpecific + 466
5 com.apple.CFNetwork 0x00007fff33c5009a 0x7fff33c06000 + 303258
6 com.apple.Foundation 0x00007fff37ad1882 __NSThread__start__ + 1064
7 libsystem_pthread.dylib 0x00007fff6f627109 _pthread_start + 148
8 libsystem_pthread.dylib 0x00007fff6f622b8b thread_start + 15
Thread 3:: com.apple.NSEventThread
0 libsystem_kernel.dylib 0x00007fff6f55fdfa mach_msg_trap + 10
1 libsystem_kernel.dylib 0x00007fff6f560170 mach_msg + 60
2 com.apple.SkyLight 0x00007fff645a58d7 CGSSnarfAndDispatchDatagrams + 237
3 com.apple.SkyLight 0x00007fff647d55a5 SLSGetNextEventRecordInternal + 83
4 com.apple.SkyLight 0x00007fff64673fbe SLEventCreateNextEvent + 136
5 com.apple.HIToolbox 0x00007fff34051da6 PullEventsFromWindowServerOnConnection(unsigned int, unsigned char, __CFMachPortBoost*) + 268
6 com.apple.HIToolbox 0x00007fff34051c72 MessageHandler(__CFMachPort*, void*, long, void*) + 48
7 com.apple.CoreFoundation 0x00007fff35453983 __CFMachPortPerform + 250
8 com.apple.CoreFoundation 0x00007fff35425003 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 41
9 com.apple.CoreFoundation 0x00007fff35424f52 __CFRunLoopDoSource1 + 541
10 com.apple.CoreFoundation 0x00007fff35423a6c __CFRunLoopRun + 2284
11 com.apple.CoreFoundation 0x00007fff35422b23 CFRunLoopRunSpecific + 466
12 com.apple.AppKit 0x00007fff328315b4 _NSEventThread + 132
13 libsystem_pthread.dylib 0x00007fff6f627109 _pthread_start + 148
14 libsystem_pthread.dylib 0x00007fff6f622b8b thread_start + 15
Thread 4:: com.apple.coreanimation.render-server
0 libsystem_kernel.dylib 0x00007fff6f55fdfa mach_msg_trap + 10
1 libsystem_kernel.dylib 0x00007fff6f560170 mach_msg + 60
2 com.apple.QuartzCore 0x00007fff40f4f1c2 CA::Render::Server::server_thread(void*) + 496
3 com.apple.QuartzCore 0x00007fff40f4efc3 thread_fun(void*) + 25
4 libsystem_pthread.dylib 0x00007fff6f627109 _pthread_start + 148
5 libsystem_pthread.dylib 0x00007fff6f622b8b thread_start + 15
Thread 5:: com.apple.coreaudio.AQClient
0 libsystem_kernel.dylib 0x00007fff6f55fdfa mach_msg_trap + 10
1 libsystem_kernel.dylib 0x00007fff6f560170 mach_msg + 60
2 com.apple.CoreFoundation 0x00007fff35424bf7 __CFRunLoopServiceMachPort + 247
3 com.apple.CoreFoundation 0x00007fff354236b1 __CFRunLoopRun + 1329
4 com.apple.CoreFoundation 0x00007fff35422b23 CFRunLoopRunSpecific + 466
5 com.apple.audio.toolbox.AudioToolbox 0x00007fff337a44cc GenericRunLoopThread::Entry(void*) + 166
6 libAudioToolboxUtility.dylib 0x00007fff6bda96c9 CAPThread::Entry(CAPThread*) + 77
7 libsystem_pthread.dylib 0x00007fff6f627109 _pthread_start + 148
8 libsystem_pthread.dylib 0x00007fff6f622b8b thread_start + 15
Thread 6:
0 libsystem_kernel.dylib 0x00007fff6f55fe36 semaphore_wait_trap + 10
1 com.apple.audio.caulk 0x00007fff68f6ab16 caulk::mach::semaphore::wait() + 16
2 com.apple.audio.caulk 0x00007fff68f6a9b2 caulk::semaphore::timed_wait(double) + 106
3 com.apple.audio.caulk 0x00007fff68f6a7c4 caulk::concurrent::details::worker_thread::run() + 30
4 com.apple.audio.caulk 0x00007fff68f6a1e4 void* caulk::thread_proxy<std::__1::tuple<caulk::thread::attributes, void (caulk::concurrent::details::worker_thread::*)(), std::__1::tuple<caulk::concurrent::details::worker_thread*> > >(void*) + 45
5 libsystem_pthread.dylib 0x00007fff6f627109 _pthread_start + 148
6 libsystem_pthread.dylib 0x00007fff6f622b8b thread_start + 15
Thread 7:: AMCP Logging Spool
0 libsystem_kernel.dylib 0x00007fff6f55fe36 semaphore_wait_trap + 10
1 com.apple.audio.caulk 0x00007fff68f6ab16 caulk::mach::semaphore::wait() + 16
2 com.apple.audio.caulk 0x00007fff68f6a9b2 caulk::semaphore::timed_wait(double) + 106
3 com.apple.audio.caulk 0x00007fff68f6a7c4 caulk::concurrent::details::worker_thread::run() + 30
4 com.apple.audio.caulk 0x00007fff68f6a1e4 void* caulk::thread_proxy<std::__1::tuple<caulk::thread::attributes, void (caulk::concurrent::details::worker_thread::*)(), std::__1::tuple<caulk::concurrent::details::worker_thread*> > >(void*) + 45
5 libsystem_pthread.dylib 0x00007fff6f627109 _pthread_start + 148
6 libsystem_pthread.dylib 0x00007fff6f622b8b thread_start + 15
Thread 8:
0 libsystem_pthread.dylib 0x00007fff6f622b68 start_wqthread + 0
Thread 9:
0 libsystem_pthread.dylib 0x00007fff6f622b68 start_wqthread + 0
Thread 10:
0 libsystem_pthread.dylib 0x00007fff6f622b68 start_wqthread + 0
Thread 11:
0 libsystem_pthread.dylib 0x00007fff6f622b68 start_wqthread + 0
Thread 12:
0 libsystem_pthread.dylib 0x00007fff6f622b68 start_wqthread + 0
Thread 13:
0 libsystem_pthread.dylib 0x00007fff6f622b68 start_wqthread + 0
Thread 14:
0 libsystem_pthread.dylib 0x00007fff6f622b68 start_wqthread + 0
Thread 15:: CVDisplayLink
0 libsystem_kernel.dylib 0x00007fff6f562882 __psynch_cvwait + 10
1 libsystem_pthread.dylib 0x00007fff6f627457 _pthread_cond_wait + 748
2 com.apple.CoreVideo 0x00007fff373d7d2b CVDisplayLink::waitUntil(unsigned long long) + 229
3 com.apple.CoreVideo 0x00007fff373d7238 CVDisplayLink::runIOThread() + 482
4 libsystem_pthread.dylib 0x00007fff6f627109 _pthread_start + 148
5 libsystem_pthread.dylib 0x00007fff6f622b8b thread_start + 15
Thread 16:: CVDisplayLink
0 libsystem_kernel.dylib 0x00007fff6f562882 __psynch_cvwait + 10
1 libsystem_pthread.dylib 0x00007fff6f627457 _pthread_cond_wait + 748
2 com.apple.CoreVideo 0x00007fff373d7d2b CVDisplayLink::waitUntil(unsigned long long) + 229
3 com.apple.CoreVideo 0x00007fff373d7238 CVDisplayLink::runIOThread() + 482
4 libsystem_pthread.dylib 0x00007fff6f627109 _pthread_start + 148
5 libsystem_pthread.dylib 0x00007fff6f622b8b thread_start + 15
Thread 17 Crashed:: CVDisplayLink
0 com.apple.CoreVideo 0x00007fff373d76ab CVCGDisplayLink::getDisplayTimes(unsigned long long*, unsigned long long*, unsigned long long*) + 65
1 com.apple.CoreVideo 0x00007fff373d7525 CVHWTime::update(double, bool*, bool*) + 57
2 com.apple.CoreVideo 0x00007fff373d73de CVXTime::update() + 44
3 com.apple.CoreVideo 0x00007fff373d711c CVDisplayLink::runIOThread() + 198
4 libsystem_pthread.dylib 0x00007fff6f627109 _pthread_start + 148
5 libsystem_pthread.dylib 0x00007fff6f622b8b thread_start + 15
Thread 17 crashed with X86 Thread State (64-bit):
rax: 0x0000000000000000 rbx: 0x0000600001d56c38 rcx: 0x00007000060c8da8 rdx: 0x00007000060c8db0
rdi: 0x00007f9e1d18fe20 rsi: 0x00007000060c8db8 rbp: 0x00007000060c8d90 rsp: 0x00007000060c8d60
r8: 0x000000000009ad1d r9: 0x00007f9e1d18fe50 r10: 0x00007f9e1d18fe58 r11: 0x0000000000000206
r12: 0x00007000060c8db8 r13: 0x0000000000000000 r14: 0x00007000060c8e07 r15: 0x00007000060c8db0
rip: 0x00007fff373d76ab rfl: 0x0000000000010246 cr2: 0x0000000000000000
Logical CPU: 0
Error Code: 0x00000000
Trap Number: 0
接下来是一百万行二进制图像，然后是:
External Modification Summary:
Calls made by other processes targeting this process:
task_for_pid: 54
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: 16801343
thread_create: 0
thread_set_state: 967
VM Region Summary:
ReadOnly portion of Libraries: Total=778.7M resident=0K(0%) swapped_out_or_unallocated=778.7M(100%)
Writable regions: Total=758.5M written=0K(0%) resident=0K(0%) swapped_out=0K(0%) unallocated=758.5M(100%)
VIRTUAL REGION
REGION TYPE SIZE COUNT (non-coalesced)
=========== ======= =======
Accelerate framework 1024K 8
Activity Tracing 256K 1
CG backing stores 440K 2
CG image 52K 9
CoreAnimation 2940K 146
CoreData Object IDs 4100K 2
CoreGraphics 8K 1
CoreImage 12K 3
CoreUI image data 392K 7
Foundation 956K 5
IOKit 7940K 1
Image IO 8188K 32
Kernel Alloc Once 8K 1
MALLOC 593.3M 211
MALLOC guard page 48K 11
MALLOC_NANO (reserved) 128.0M 1 reserved VM address space (unallocated)
Memory Tag 242 12K 1
Memory Tag 251 16K 1
SQLite page cache 64K 1
STACK GUARD 56.1M 18
Stack 17.1M 18
VM_ALLOCATE 412K 28
WebKit Malloc 8604K 18
__DATA 55.1M 502
__DATA_CONST 637K 21
__FONT_DATA 4K 1
__GLSLBUILTINS 5176K 1
__LINKEDIT 392.2M 17
__OBJC_RO 32.2M 1
__OBJC_RW 1892K 2
__TEXT 386.5M 487
__UNICODE 564K 1
libnetwork 1664K 24
mapped file 378.0M 74
shared memory 668K 18
=========== ======= =======
TOTAL 2.0G 1675
TOTAL, minus reserved VM space 1.9G 1675
使用 bt 向“getDisplayTimes”添加符号断点并重新启动应用程序后，代码立即停止以显示这种情况:
日志:
* thread #17, name = 'CVDisplayLink', stop reason = breakpoint 1.1
* frame #0: 0x00007fff3910a66a CoreVideo`CVCGDisplayLink::getDisplayTimes(unsigned long long*, unsigned long long*, unsigned long long*)
frame #1: 0x00007fff3910a525 CoreVideo`CVHWTime::update(double, bool*, bool*) + 57
frame #2: 0x00007fff3910a3de CoreVideo`CVXTime::update() + 44
frame #3: 0x00007fff3910a11c CoreVideo`CVDisplayLink::runIOThread() + 198
frame #4: 0x0000000101047c65 libsystem_pthread.dylib`_pthread_start + 148
frame #5: 0x00000001010434af libsystem_pthread.dylib`thread_start + 15
还有这个:
最佳答案
我没有收到 Apple 的任何答复(已经几个月了!)所以我继续降级(我不想这样做)到 Mojave。从那以后，我再也没有打嗝或出现问题。我很困惑。
关于swift - 由于 macOS Catalina Xcode 应用程序每晚都会因 CVCGDisplayLink 异常而崩溃，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/60975918/