我在我的iOS应用程序中使用了UIWebView，并且我每天都会在Flurry上看到几次随机崩溃。我没有重现它的步骤。
如果我能进一步了解这一点，我将不胜感激。
这是我看到的崩溃日志。
Hardware Model: iPad5,3
Parent Process: launchd [1]
Exception Type: SIGTRAP
Exception Codes: #0 at 0x184391688
Crashed Thread: 3
Thread 0:
0 libsystem_kernel.dylib 0x1966cce0c _mach_msg_trap + 8
1 CoreFoundation 0x18446b724 <redacted> + 200
2 CoreFoundation 0x184469678 <redacted> + 940
3 CoreFoundation 0x1843952d4 _CFRunLoopRunSpecific + 396
4 GraphicsServices 0x18dcb36fc _GSEventRunModal + 168
5 UIKit 0x188f92f40 _UIApplicationMain + 1488
6 <APPLICATION> 0x10007d2f4 -[<APPLICATION>ProgramViewController .cxx_destruct] + 112
7 libdyld.dylib 0x1965cea08 <redacted> + 4
Thread 1:
0 libsystem_kernel.dylib 0x1966ccc24 _kevent64 + 8
1 libdispatch.dylib 0x1965a399c <redacted> + 0
Thread 2:
0 libsystem_kernel.dylib 0x1966cce0c _mach_msg_trap + 8
1 CoreFoundation 0x18446b724 <redacted> + 200
2 CoreFoundation 0x184469678 <redacted> + 940
3 CoreFoundation 0x1843952d4 _CFRunLoopRunSpecific + 396
4 CFNetwork 0x183e72594 <redacted> + 440
5 Foundation 0x1853b5db8 <redacted> + 1072
6 libsystem_pthread.dylib 0x196783dc8 <redacted> + 164
7 libsystem_pthread.dylib 0x196783d24 <redacted> + 0
8 libsystem_pthread.dylib 0x196780ef8 _thread_start + 4
Thread 3 Crashed:
0 CoreFoundation 0x184391688 _CFRelease + 1084
1 WebCore 0x192f129c4 <redacted> + 48
2 WebCore 0x192e78ef4 <redacted> + 36
3 CoreFoundation 0x18446c12c <redacted> + 28
4 CoreFoundation 0x18446bddc <redacted> + 888
5 CoreFoundation 0x184469828 <redacted> + 1372
6 CoreFoundation 0x1843952d4 _CFRunLoopRunSpecific + 396
7 WebCore 0x192f002e4 <redacted> + 468
8 libsystem_pthread.dylib 0x196783dc8 <redacted> + 164
9 libsystem_pthread.dylib 0x196783d24 <redacted> + 0
10 libsystem_pthread.dylib 0x196780ef8 _thread_start + 4
Thread 4:
0 libsystem_kernel.dylib 0x1966e7078 ___psynch_cvwait + 8
1 libc++.1.dylib 0x1956a0d60 __ZNSt3__118condition_variable15__do_timed_waitERNS_11unique_lockINS_5mutexEEENS_6chrono10time_pointINS5_12system_clockENS5_8durationIxNS_5ratioILl1ELl1000000000EEEEEEE + 140
2 JavaScriptCore 0x185af2578 <redacted> + 180
3 JavaScriptCore 0x18598958c <redacted> + 80
4 JavaScriptCore 0x185984ba0 <redacted> + 24
5 libsystem_pthread.dylib 0x196783dc8 <redacted> + 164
6 libsystem_pthread.dylib 0x196783d24 <redacted> + 0
7 libsystem_pthread.dylib 0x196780ef8 _thread_start + 4
Thread 5:
0 libsystem_kernel.dylib 0x1966e7078 ___psynch_cvwait + 8
1 libc++.1.dylib 0x1956a0cb0 __ZNSt3__118condition_variable4waitERNS_11unique_lockINS_5mutexEEE + 56
2 JavaScriptCore 0x185c32ee0 <redacted> + 156
3 JavaScriptCore 0x185c32f84 <redacted> + 92
4 JavaScriptCore 0x185984ba0 <redacted> + 24
5 libsystem_pthread.dylib 0x196783dc8 <redacted> + 164
6 libsystem_pthread.dylib 0x196783d24 <redacted> + 0
7 libsystem_pthread.dylib 0x196780ef8 _thread_start + 4
Thread 6:
0 libsystem_kernel.dylib 0x1966e7078 ___psynch_cvwait + 8
1 libc++.1.dylib 0x1956a0cb0 __ZNSt3__118condition_variable4waitERNS_11unique_lockINS_5mutexEEE + 56
2 JavaScriptCore 0x185c32ee0 <redacted> + 156
3 JavaScriptCore 0x185c32f84 <redacted> + 92
4 JavaScriptCore 0x185984ba0 <redacted> + 24
5 libsystem_pthread.dylib 0x196783dc8 <redacted> + 164
6 libsystem_pthread.dylib 0x196783d24 <redacted> + 0
7 libsystem_pthread.dylib 0x196780ef8 _thread_start + 4
Thread 7:
0 libsystem_kernel.dylib 0x1966e7498 ___select + 8
1 libsystem_pthread.dylib 0x196783dc8 <redacted> + 164
2 libsystem_pthread.dylib 0x196783d24 <redacted> + 0
3 libsystem_pthread.dylib 0x196780ef8 _thread_start + 4
Thread 8:
0 libsystem_kernel.dylib 0x1966cce0c _mach_msg_trap + 8
1 CoreFoundation 0x18446b724 <redacted> + 200
2 CoreFoundation 0x184469678 <redacted> + 940
3 CoreFoundation 0x1843952d4 _CFRunLoopRunSpecific + 396
4 WebCore 0x192f344f0 <redacted> + 288
5 JavaScriptCore 0x185984ba0 <redacted> + 24
6 libsystem_pthread.dylib 0x196783dc8 <redacted> + 164
7 libsystem_pthread.dylib 0x196783d24 <redacted> + 0
8 libsystem_pthread.dylib 0x196780ef8 _thread_start + 4
Thread 9:
0 libsystem_kernel.dylib 0x1966cce0c _mach_msg_trap + 8
1 CoreFoundation 0x18446b724 <redacted> + 200
2 CoreFoundation 0x184469678 <redacted> + 940
3 CoreFoundation 0x1843952d4 _CFRunLoopRunSpecific + 396
4 libAVFAudio.dylib 0x182e09024 <redacted> + 164
5 libAVFAudio.dylib 0x182dfba04 <redacted> + 120
6 libsystem_pthread.dylib 0x196783dc8 <redacted> + 164
7 libsystem_pthread.dylib 0x196783d24 <redacted> + 0
8 libsystem_pthread.dylib 0x196780ef8 _thread_start + 4
Thread 10:
0 libsystem_kernel.dylib 0x1966cce48 _semaphore_wait_trap + 8
1 MediaToolbox 0x1869c88fc <redacted> + 1956
2 CoreMedia 0x184ccf8f4 <redacted> + 248
3 libsystem_pthread.dylib 0x196783dc8 <redacted> + 164
4 libsystem_pthread.dylib 0x196783d24 <redacted> + 0
5 libsystem_pthread.dylib 0x196780ef8 _thread_start + 4
Thread 11:
0 libsystem_kernel.dylib 0x1966cce48 _semaphore_wait_trap + 8
1 MediaToolbox 0x1869c88fc <redacted> + 1956
2 CoreMedia 0x184ccf8f4 <redacted> + 248
3 libsystem_pthread.dylib 0x196783dc8 <redacted> + 164
4 libsystem_pthread.dylib 0x196783d24 <redacted> + 0
5 libsystem_pthread.dylib 0x196780ef8 _thread_start + 4
Thread 12:
0 libsystem_kernel.dylib 0x1966cce0c _mach_msg_trap + 8
1 MediaToolbox 0x1869d0610 <redacted> + 104
2 CoreMedia 0x184ccf8f4 <redacted> + 248
3 libsystem_pthread.dylib 0x196783dc8 <redacted> + 164
4 libsystem_pthread.dylib 0x196783d24 <redacted> + 0
5 libsystem_pthread.dylib 0x196780ef8 _thread_start + 4
Thread 13:
0 libsystem_kernel.dylib 0x1966cce48 _semaphore_wait_trap + 8
1 MediaToolbox 0x1869c88fc <redacted> + 1956
2 CoreMedia 0x184ccf8f4 <redacted> + 248
3 libsystem_pthread.dylib 0x196783dc8 <redacted> + 164
4 libsystem_pthread.dylib 0x196783d24 <redacted> + 0
5 libsystem_pthread.dylib 0x196780ef8 _thread_start + 4
Thread 14:
0 libsystem_kernel.dylib 0x1966e7c78 ___workq_kernreturn + 8
1 libsystem_pthread.dylib 0x196780ef0 _start_wqthread + 4
Thread 15:
0 libsystem_kernel.dylib 0x1966e7c78 ___workq_kernreturn + 8
1 libsystem_pthread.dylib 0x196780ef0 _start_wqthread + 4
Thread 16:
0 libsystem_kernel.dylib 0x1966e7c78 ___workq_kernreturn + 8
1 libsystem_pthread.dylib 0x196780ef0 _start_wqthread + 4
Thread 17:
0 libsystem_kernel.dylib 0x1966e7c78 ___workq_kernreturn + 8
1 libsystem_pthread.dylib 0x196780ef0 _start_wqthread + 4
Thread 18:
0 libsystem_kernel.dylib 0x1966e7c78 ___workq_kernreturn + 8
1 libsystem_pthread.dylib 0x196780ef0 _start_wqthread + 4
Thread 19:
0 libsystem_kernel.dylib 0x1966e7c78 ___workq_kernreturn + 8
1 libsystem_pthread.dylib 0x196780ef0 _start_wqthread + 4