Crashing on exception: Extension context of class NSExtensionContext has not supplied an auxiliary connection host protocol

Safari & Web General
mtospr OP
Created May ’19
Replies 7
Boosts 0
Views 3.0k
Participants 8

Hey, my Safari Extension crashes every so often with the following crash log. I have absolutely no idea why and when it happens, but when it happens once, it crashes instantly when I am trying to reactivate the extension in Safari's settings.


Do you have any ideas? Please let me know, if more information could be helpful.


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

Exception Type:        EXC_BAD_INSTRUCTION (SIGILL)
Exception Codes:       0x0000000000000001, 0x0000000000000000
Exception Note:        EXC_CORPSE_NOTIFY

Termination Signal:    Illegal instruction: 4
Termination Reason:    Namespace SIGNAL, Code 0x4
Terminating Process:   exc handler [5197]

Application Specific Information:
Crashing on exception: Extension context of class NSExtensionContext has not supplied an auxiliary connection host protocol.

Application Specific Backtrace 1:
0   CoreFoundation                      0x00007fff4ad3ae45 __exceptionPreprocess + 256
1   libobjc.A.dylib                     0x00007fff759723c6 objc_exception_throw + 48
2   Foundation                          0x00007fff4d08746a -[NSExtensionContext _derivedExtensionAuxiliaryHostProtocol] + 326
3   Foundation                          0x00007fff4d087b0a -[NSExtensionContext initWithInputItems:listenerEndpoint:contextUUID:] + 1340
4   Foundation                          0x00007fff4d086288 __105-[_NSExtensionContextVendor _beginRequestWithExtensionItems:listenerEndpoint:withContextUUID:completion:]_block_invoke + 143
5   libdispatch.dylib                   0x00007fff771495f8 _dispatch_call_block_and_release + 12
6   libdispatch.dylib                   0x00007fff7714a63d _dispatch_client_callout + 8
7   libdispatch.dylib                   0x00007fff7715568d _dispatch_main_queue_callback_4CF + 1135
8   CoreFoundation                      0x00007fff4ac854a6 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9
9   CoreFoundation                      0x00007fff4ac84bd3 __CFRunLoopRun + 2300
10  CoreFoundation                      0x00007fff4ac84085 CFRunLoopRunSpecific + 459
11  HIToolbox                           0x00007fff49f629db RunCurrentEventLoopInMode + 292
12  HIToolbox                           0x00007fff49f6261d ReceiveNextEventCommon + 355
13  HIToolbox                           0x00007fff49f624a6 _BlockUntilNextEventMatchingListInModeWithFilter + 64
14  AppKit                              0x00007fff482fcffb _DPSNextEvent + 965
15  AppKit                              0x00007fff482fbd93 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1361
16  ViewBridge                          0x00007fff72a6ac43 -[NSViewServiceApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 99
17  AppKit                              0x00007fff482f5eb0 -[NSApplication run] + 699
18  AppKit                              0x00007fff482e53f0 NSApplicationMain + 777
19  libxpc.dylib                        0x00007fff773ca213 _xpc_objc_main + 612
20  libxpc.dylib                        0x00007fff773c9cd9 _xpc_copy_xpcservice_dictionary + 0
21  Foundation                          0x00007fff4cf0525a +[NSXPCListener serviceListener] + 0
22  PlugInKit                           0x00007fff6d24584b PlugInKit + 84043
23  PlugInKit                           0x00007fff6d245693 PlugInKit + 83603
24  PlugInKit                           0x00007fff6d245b9f PlugInKit + 84895
25  Foundation                          0x00007fff4d1168ac NSExtensionMain + 51
26  libdyld.dylib                       0x00007fff771973d5 start + 1
27  ???                                 0x0000000000000001 0x0 + 1

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.apple.AppKit              0x00007fff48701767 -[NSApplication _crashOnException:] + 109
1   com.apple.AppKit              0x00007fff48701648 -[NSApplication reportException:] + 916
2   com.apple.AppKit              0x00007fff487c1f09 uncaughtErrorProc + 145
3   com.apple.CoreFoundation      0x00007fff4adaf72d __handleUncaughtException + 775
4   libobjc.A.dylib               0x00007fff75974775 _objc_terminate() + 91
5   libc++abi.dylib               0x00007fff7420a19e std::__terminate(void (*)()) + 8
6   libc++abi.dylib               0x00007fff7420a213 std::terminate() + 51
7   libdispatch.dylib             0x00007fff7714a651 _dispatch_client_callout + 28
8   libdispatch.dylib             0x00007fff7715568d _dispatch_main_queue_callback_4CF + 1135
9   com.apple.CoreFoundation      0x00007fff4ac854a6 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9
10  com.apple.CoreFoundation      0x00007fff4ac84bd3 __CFRunLoopRun + 2300
11  com.apple.CoreFoundation      0x00007fff4ac84085 CFRunLoopRunSpecific + 459
12  com.apple.HIToolbox           0x00007fff49f629db RunCurrentEventLoopInMode + 292
13  com.apple.HIToolbox           0x00007fff49f6261d ReceiveNextEventCommon + 355
14  com.apple.HIToolbox           0x00007fff49f624a6 _BlockUntilNextEventMatchingListInModeWithFilter + 64
15  com.apple.AppKit              0x00007fff482fcffb _DPSNextEvent + 965
16  com.apple.AppKit              0x00007fff482fbd93 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1361
17  com.apple.ViewBridge          0x00007fff72a6ac43 -[NSViewServiceApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 99
18  com.apple.AppKit              0x00007fff482f5eb0 -[NSApplication run] + 699
19  com.apple.AppKit              0x00007fff482e53f0 NSApplicationMain + 777
20  libxpc.dylib                  0x00007fff773ca213 _xpc_objc_main + 612
21  libxpc.dylib                  0x00007fff773c9cd9 xpc_main + 433
22  com.apple.Foundation          0x00007fff4cf0525a -[NSXPCListener resume] + 162
23  com.apple.pluginkit.framework 0x00007fff6d24584b 0x7fff6d231000 + 84043
24  com.apple.pluginkit.framework 0x00007fff6d245693 0x7fff6d231000 + 83603
25  com.apple.pluginkit.framework 0x00007fff6d245b9f 0x7fff6d231000 + 84895
26  com.apple.Foundation          0x00007fff4d1168ac NSExtensionMain + 51
27  libdyld.dylib                 0x00007fff771973d5 start + 1
Replies  7
Boosts  0
Views  3.0k
Participants  8
bridgetfromniskayuna OP
Dec ’19

We are getting user reports of this with our extension. Did you ever find a cause or solution?

0
adomasven OP
Mar ’20

Also seeing the same problem reported by our users and reproducible locally. Any info would be greatly appreciated.

0
benkotch OP
Jun ’20

Seeing the same thing as well, was anyone able to solve? I can't find much info on `auxiliary connection host protocol`.

0
Engineer OP
Apple
Jun ’20

This is a known issue, but nothing that is wrong with your extension.

1
maadkal OP
Aug ’20
Hey @benkotch

Could you speak more to this? Do you have any references to documentation on this crash?
0
Cinetagonist OP
Mar ’21
have someone found any solution for the issue?
0
jw732 OP
Apr ’21
This seems to be happening to my extension as well, and possible a new related issue?

[EXExtensionContextImplementation _derivedExtensionAuxiliaryHostProtocolWithContextClass:]
0
Crashing on exception: Extension context of class NSExtensionContext has not supplied an auxiliary connection host protocol
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