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POJavascriptCore->WebCore->CFNetwork crash on iOS app
 

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  1. POJavascriptCore->WebCore->CFNetwork crash on iOS app
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    <p>In one of our apps we are seeing some crashes with the following backtrace.</p> <pre><code>Thread 8 Crashed: 0 CoreFoundation 0x36a07202 CFEqual + 41 1 CoreFoundation 0x00088c49 __CFDictionaryStandardEquateKeys + 37 2 CoreFoundation 0x00002c3c CFBasicHashFindBucket + 2128 3 CoreFoundation 0x36a07a8b CFDictionaryGetValue + 82 4 CFNetwork 0x0001d77b SocketStream::copyProperty(void const*, __CFString const*) + 39 5 CFNetwork 0x000ae181 CoreStreamBase::_streamInterface_CopyProperty(__CFString const*) const + 21 6 CFNetwork 0x0006b7bf HTTPReadFilter::_streamImpl_CopyProperty(__CFString const*) const + 235 7 CFNetwork 0x000ae181 CoreStreamBase::_streamInterface_CopyProperty(__CFString const*) const + 21 8 CFNetwork 0x00017e11 NetConnection::willEnqueueRequests() + 65 9 CFNetwork 0x000678fd HTTPNetConnection::prepareTransmission(HTTPNetStreamInfo*, __CoreWriteStream*) + 21 10 CFNetwork 0x00017005 NetConnection::enqueue(void*, unsigned char) + 321 11 CFNetwork 0x0006972d HTTPNetStreamInfo::_streamImpl_Open(CFStreamError*, unsigned char*) + 57 12 CFNetwork 0x00069787 non-virtual thunk to HTTPNetStreamInfo::_streamImpl_Open(CFStreamError*, unsigned char*) + 11 13 CFNetwork 0x000ae1b5 CoreStreamBase::_streamInterface_Open() + 45 14 CFNetwork 0x0000641b HTTPProtocol::openStream() + 183 15 CFNetwork 0x0007789d HTTPProtocol::useNetConnectionForRequest(NetConnection*, __CFHTTPMessage*, unsigned char, unsigned char) + 665 16 CFNetwork 0x0007cdef HTTPConnectionCacheEntry::dispatchConnectionToProtocol(NetConnection*, HTTPProtocol*, HTTPRequestMessage*, unsigned char) + 191 17 CFNetwork 0x0007c435 HTTPConnectionCacheEntry::notifyNextProtocolOfOpenConnection(NetConnection*, unsigned char) + 329 18 CFNetwork 0x00004f5f HTTPConnectionCacheEntry::enqueueRequestForProtocol(HTTPProtocol*, __CFHTTPMessage*) + 499 19 CFNetwork 0x0007b2ed HTTPConnectionCache::_onqueue_enqueueRequestForProtocol(HTTPProtocol*, __CFHTTPMessage*) + 109 20 CFNetwork 0x0007b5b5 __enqueueRequestForProtocol_block_invoke_0 + 17 21 CFNetwork 0x000b0133 ___performAsync_block_invoke_068 + 19 22 CoreFoundation 0x36a0c74d CFArrayApplyFunction + 176 23 CFNetwork 0x000b0593 RunloopBlockContext::perform() + 75 24 CFNetwork 0x0001415d MultiplexerSource::perform() + 189 25 CoreFoundation 0x00097683 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15 26 CoreFoundation 0x00096ee9 __CFRunLoopDoSources0 + 213 27 CoreFoundation 0x00095cb7 __CFRunLoopRun + 647 28 CoreFoundation 0x36a0cebd CFRunLoopRunSpecific + 356 29 CoreFoundation 0x36a0cd49 CFRunLoopRunInMode + 104 30 WebCore 0x000a5f9f _ZN7WebCoreL15runLoaderThreadEPv + 143 31 JavaScriptCore 0x0017ffb3 _ZN3WTFL19wtfThreadEntryPointEPv + 15 32 libsystem_c.dylib 0x00011311 _pthread_start + 309 </code></pre> <p>Any insight on what the problem might be?</p>
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    1. COSeeing the same stacktrace in my app. No clue what can cause it, looks like some bad memory, but since there is not a single line of my app code... Do you use UIWebView's?
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    2. COYes, the app uses UIWebView in different flows. I am seeing these only for users on 6.0 and 6.0.1 and I am seeing many of these. My primary concern is if this is crashing the app or not.
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    3. COFor what it's worth, I've been getting the same crash when using MPMoviePlayerController streaming. ( RAM has always been 60-20meg too )
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