我在Webview中发生了一次随机崩溃，已经发生了几次。 （测试自动化工具：猴子）
它看起来与UIWebView有关，但我不知道发生了什么 - 任何帮助表示感谢崩溃似乎是众所周知的。
Version: 1.0 (1.0)
Code Type: ARM-64 (Native)
Parent Process: debugserver [406]
Date/Time: 2015-08-07 20:33:59.099 +0800
Launch Time: 2015-08-07 20:13:10.956 +0800
OS Version: iOS 8.3 (12F70)
Report Version: 105
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000002e6beb8
Triggered by Thread: 0
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libobjc.A.dylib 0x00000001959d3bd0 objc_msgSend + 16
1 UIKit 0x0000000188ff77b0 -[UIWebDocumentView selectionRectsForRange:] + 44
2 UIKit 0x00000001890d03b0 -[UITextInteractionAssistant(UITextInteractionAssistant_Internal) distanceBetweenPoint:andRange:] + 88
3 UIKit 0x0000000188dddcf4 -[UITextInteractionAssistant(UITextInteractionAssistant_Internal) oneFingerTap:] + 3364
4 UIKit 0x0000000188dc30d8 _UIGestureRecognizerSendActions + 272
5 UIKit 0x0000000188c5c71c -[UIGestureRecognizer _updateGestureWithEvent:buttonEvent:] + 576
6 UIKit 0x00000001890cd4f8 ___UIGestureRecognizerUpdate_block_invoke662 + 56
7 UIKit 0x0000000188c20480 _UIGestureRecognizerRemoveObjectsFromArrayAndApplyBlocks + 288
8 UIKit 0x0000000188c1e82c _UIGestureRecognizerUpdate + 2500
9 UIKit 0x0000000188c5a894 -[UIWindow _sendGesturesForEvent:] + 1040
10 UIKit 0x0000000188c59f4c -[UIWindow sendEvent:] + 656
11 UIKit 0x0000000188c2d188 -[UIApplication sendEvent:] + 260
12 UIKit 0x0000000188ece320 _UIApplicationHandleEventFromQueueEvent + 15420
13 UIKit 0x0000000188c2b69c _UIApplicationHandleEventQueue + 1712
14 CoreFoundation 0x00000001841a423c __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 20
15 CoreFoundation 0x00000001841a34e0 __CFRunLoopDoSources0 + 260
16 CoreFoundation 0x00000001841a1590 __CFRunLoopRun + 708
17 CoreFoundation 0x00000001840cd2d0 CFRunLoopRunSpecific + 392
18 GraphicsServices 0x000000018d8eb6f8 GSEventRunModal + 164
19 UIKit 0x0000000188c92fa8 UIApplicationMain + 1484
20 PxxSDK 0x000000010009f144 0x100088000 + 94532
21 libdyld.dylib 0x000000019603ea04 start + 0
code Type: ARM-64 (Native)
Parent Process: launchd [1]
Date/Time: 2015-08-07 19:47:25.688 +0800
Launch Time: 2015-08-07 18:30:53.690 +0800
OS Version: iOS 8.3 (12F70)
Report Version: 105
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Triggered by Thread: 0
Last Exception Backtrace:
0 CoreFoundation 0x1841ec2d8 __exceptionPreprocess + 132
1 libobjc.A.dylib 0x1959c00e4 objc_exception_throw + 60
2 CoreFoundation 0x1841f33a4 -[NSObject(NSObject) doesNotRecognizeSelector:] + 220
3 CoreFoundation 0x1841f0154 ___forwarding___ + 928
4 CoreFoundation 0x1840f2ccc _CF_forwarding_prep_0 + 92
5 UIKit 0x188ff77b4 -[UIWebDocumentView selectionRectsForRange:] + 48
6 UIKit 0x1890d03b4 -[UITextInteractionAssistant(UITextInteractionAssistant_Internal) distanceBetweenPoint:andRange:] + 92
7 UIKit 0x188dddcf8 -[UITextInteractionAssistant(UITextInteractionAssistant_Internal) oneFingerTap:] + 3368
8 UIKit 0x188dc30dc _UIGestureRecognizerSendActions + 276
9 UIKit 0x188c5c720 -[UIGestureRecognizer _updateGestureWithEvent:buttonEvent:] + 580
10 UIKit 0x1890cd4fc ___UIGestureRecognizerUpdate_block_invoke662 + 60
11 UIKit 0x188c20484 _UIGestureRecognizerRemoveObjectsFromArrayAndApplyBlocks + 292
12 UIKit 0x188c1e830 _UIGestureRecognizerUpdate + 2504
13 UIKit 0x188c5a898 -[UIWindow _sendGesturesForEvent:] + 1044
14 UIKit 0x188c59f50 -[UIWindow sendEvent:] + 660
15 UIKit 0x188c2d18c -[UIApplication sendEvent:] + 264
16 UIKit 0x188ece324 _UIApplicationHandleEventFromQueueEvent + 15424
17 UIKit 0x188c2b6a0 _UIApplicationHandleEventQueue + 1716
18 CoreFoundation 0x1841a4240 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 24
19 CoreFoundation 0x1841a34e4 __CFRunLoopDoSources0 + 264
20 CoreFoundation 0x1841a1594 __CFRunLoopRun + 712
21 CoreFoundation 0x1840cd2d4 CFRunLoopRunSpecific + 396
22 GraphicsServices 0x18d8eb6fc GSEventRunModal + 168
23 UIKit 0x188c92fac UIApplicationMain + 1488
24 PxxSDK 0x100107148 0x1000f0000 + 94536
25 libdyld.dylib 0x19603ea08 start + 4
Code Type: ARM-64 (Native)
Parent Process: launchd [1]
Date/Time: 2015-08-07 18:30:15.419 +0800
Launch Time: 2015-08-07 18:10:52.612 +0800
OS Version: iOS 8.3 (12F70)
Report Version: 105
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000014da98b0
Triggered by Thread: 0
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libobjc.A.dylib 0x00000001959d3bd0 objc_msgSend + 16
1 UIKit 0x0000000188c6ae48 -[UITextInteractionAssistant(UITextInteractionAssistant_Internal) containerIsBrowserView] + 48
2 UIKit 0x0000000188c6add0 -[UITextInteractionAssistant(UITextInteractionAssistant_Internal) textDocument] + 44
3 UIKit 0x0000000188c6acd0 -[UITextSelectionView selection] + 48
4 UIKit 0x0000000188d5a6b8 -[UITextSelectionView inputViewDidChange] + 108
5 CoreFoundation 0x00000001841922c0 __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 16
6 CoreFoundation 0x00000001840cf44c _CFXNotificationPost + 2056
7 Foundation 0x0000000184ffea7c -[NSNotificationCenter postNotificationName:object:userInfo:] + 68
8 UIKit 0x000000018932bc8c -[UIInputWindowController postEndNotifications:withInfo:] + 160
9 UIKit 0x000000018932a390 -[UIInputWindowController performWithSafeTransitionFrames:] + 148
10 UIKit 0x000000018932dac0 __77-[UIInputWindowController moveFromPlacement:toPlacement:starting:completion:]_block_invoke644 + 460
11 UIKit 0x0000000188c64770 -[UIViewAnimationBlockDelegate _didEndBlockAnimation:finished:context:] + 404
12 UIKit 0x0000000188c642d8 -[UIViewAnimationState sendDelegateAnimationDidStop:finished:] + 184
13 UIKit 0x0000000188c641e0 -[UIViewAnimationState animationDidStop:finished:] + 100
14 UIKit 0x000000018261bfec -[UIViewAnimationStateAccessibility animationDidStop:finished:] + 52
15 QuartzCore 0x000000018857968c CA::Layer::run_animation_callbacks(void*) + 292
16 libdispatch.dylib 0x0000000196011950 _dispatch_client_callout + 12
17 libdispatch.dylib 0x0000000196016208 _dispatch_main_queue_callback_4CF + 1604
18 CoreFoundation 0x00000001841a37f4 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 8
19 CoreFoundation 0x00000001841a189c __CFRunLoopRun + 1488
20 CoreFoundation 0x00000001840cd2d0 CFRunLoopRunSpecific + 392
21 GraphicsServices 0x000000018d8eb6f8 GSEventRunModal + 164
22 UIKit 0x0000000188c92fa8 UIApplicationMain + 1484
23 PxxSDK 0x0000000100067144 0x100050000 + 94532
24 libdyld.dylib 0x000000019603ea04 start + 0