iOS应用启动时_objc_msgSend处SIGSEGV崩溃无业务栈排查求助

崩溃调用栈 #

崩溃发生时的最后调用栈如下：

0  libobjc.A.dylib                      _objc_msgSend + 44
1  CoreFoundation                       -[__NSSetI containsObject:] + 156
2  UIKitCore                            -[UIInputResponderController _reloadInputViewsForKeyWindowSceneResponder:] + 3532
3  UIKitCore                            -[UIInputResponderController _reloadInputViewsForResponder:] + 160
4  UIKitCore                            -[UIInputResponderController forceReloadInputViews] + 220
5  UIKitCore                            ___43-[_UIRemoteKeyboards reloadForSnapshotting]_block_invoke + 148
6  UIKitCore                            +[UIInputResponderController performOnControllers:] + 476
7  UIKitCore                            -[_UIRemoteKeyboards setIsSnapshotting:] + 108
8  UIKitCore                            -[UITextEffectsWindow _willSnapshot] + 124
9  UIKitCore                            -[UIApplication _beginSnapshotSessionForScene:withSnapshotBlock:] + 776
10 UIKitCore                            ___65-[UIApplication _performSnapshotsWithAction:forScene:completion:]_block_invoke + 132
11 UIKitCore                            -[UIScene _enableOverrideSettingsForActions:] + 60
12 UIKitCore                            -[UIScene _performSystemSnapshotWithActions:] + 120
13 UIKitCore                            -[UIApplication _performSnapshotsWithAction:forScene:completion:] + 440
14 UIKitCore                            ___98-[_UISceneSnapshotBSActionsHandler _respondToActions:forFBSScene:inUIScene:fromTransitionContext:]_block_invoke_3 + 168
15 UIKitCore                            ___98-[_UISceneSnapshotBSActionsHandler _respondToActions:forFBSScene:inUIScene:fromTransitionContext:]_block_invoke_2 + 468
16 UIKitCore                            -[UIScene _emitSceneSettingsUpdateResponseForCompletion:afterSceneUpdateWork:] + 664
17 UIKitCore                            -[UIScene scene:didUpdateWithDiff:transitionContext:completion:] + 220
18 UIKitCore                            -[UIApplicationSceneClientAgent scene:handleEvent:withCompletion:] + 464
19 FrontBoardServices                   -[FBSScene updater:didUpdateSettings:withDiff:transitionContext:completion:] + 456
20 FrontBoardServices                   ___94-[FBSWorkspaceScenesClient _queue_updateScene:withSettings:diff:transitionContext:completion:]_block_invoke_2 + 124
21 FrontBoardServices                   -[FBSWorkspace _calloutQueue_executeCalloutFromSource:withBlock:] + 232
22 FrontBoardServices                   ___94-[FBSWorkspaceScenesClient _queue_updateScene:withSettings:diff:transitionContext:completion:]_block_invoke + 368
23 libdispatch.dylib                    __dispatch_client_callout + 16
24 libdispatch.dylib                    __dispatch_block_invoke_direct$VARIANT$mp + 224
25 FrontBoardServices                   ___FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__ + 40
26 FrontBoardServices                   -[FBSSerialQueue _targetQueue_performNextIfPossible] + 404
27 FrontBoardServices                   -[FBSSerialQueue _performNextFromRunLoopSource] + 28
28 CoreFoundation                       ___CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 24
29 CoreFoundation                       ___CFRunLoopDoSource0 + 204
30 CoreFoundation                       ___CFRunLoopDoSources0 + 356
31 CoreFoundation                       ___CFRunLoopRun + 776
32 CoreFoundation                       _CFRunLoopRunSpecific + 572
33 GraphicsServices                     _GSEventRunModal + 160
34 UIKitCore                            -[UIApplication _run] + 1052
35 UIKitCore                            _UIApplicationMain + 164
36 LetvIphoneClient                     main (main.m:29)
37 libdyld.dylib                        _start + 4

已知线索 #

• 该崩溃绝大多数出现在应用启动阶段
• 从调用栈逻辑判断，崩溃大概率发生在用户使用系统键盘的场景下
• 崩溃存在特殊规律：仅在每日北京时间17:00-20:00时间段内触发，其余时间段无任何该类型崩溃上报

当前问题 #

现有调用栈中无任何业务代码，全部为系统库调用，缺少足够的排查线索，暂无法定位并修复该崩溃，寻求可行的排查思路。

内容的提问来源于stack exchange，提问作者mengxiangjian