Bug 146489

Summary: UIWebView crashed at UIViewAnimationState popAnimationState
Product: WebKit Reporter: chenwenhong <wenpkpk>
Component: New BugsAssignee: Nobody <webkit-unassigned>
Status: NEW ---    
Severity: Critical CC: dino, simon.fraser
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: iPhone / iPad   
OS: iOS 8.0   

Description chenwenhong 2015-06-30 20:53:22 PDT 
In iOS8, UIWebView has some bugs when it load a page contains video or audio, it crashed some times. 

crash stack:
Version:         9.0.0
Code Type:       ARM-64
Parent Process:  launchd [1]

Date/Time:       2015-06-29 16:46:30 +0000
OS Version:      iPhone OS 8.3 (12F70)
Report Version:  104

Exception Type:  SIGSEGV
Exception Codes: SEGV_MAPERR at 0xd7d0beb8
Crashed Thread:  0

Thread 0 Crashed:
0   libobjc.A.dylib                     0x0000000194bebbd0 objc_msgSend + 16
1   UIKit                               0x0000000187e2a39c +[UIViewAnimationState popAnimationState] + 64
2   MediaPlayer                         0x00000001856b96e8 -[MPVolumeSlider _layoutForAvailableRoutes] + 1248
3   MediaPlayer                         0x00000001856c3a58 __59-[MPAVRoutingController _scheduleSendDelegateRoutesChanged]_block_invoke + 148
4   libdispatch.dylib                   0x0000000195229994 _dispatch_call_block_and_release + 24
5   libdispatch.dylib                   0x0000000195229954 _dispatch_client_callout + 16
6   libdispatch.dylib                   0x000000019522e20c _dispatch_main_queue_callback_4CF + 1608
7   CoreFoundation                      0x000000018336b7f8 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 12
8   CoreFoundation                      0x00000001833698a0 __CFRunLoopRun + 1492
9   CoreFoundation                      0x00000001832952d4 CFRunLoopRunSpecific + 396
10  GraphicsServices                    0x000000018caab6fc GSEventRunModal + 168
11  UIKit                               0x0000000187e5afac UIApplicationMain + 1488
12  MyApp                               0x00000001000bf044 main (main.m:62)
13  libdyld.dylib                       0x0000000195256a08 start + 4
Comment 1 Simon Fraser (smfr) 2015-07-01 09:29:11 PDT 
Please test with the iOS 9 beta.
Comment 2 chenwenhong 2015-07-01 20:36:14 PDT 
Thanks, I will test with the iOS 9 beta.
But have you some ways to fix it or avoid the crash in iOS 8?