title: Thread : Crashed: com.apple.NSURLSession-work
body: <p>With the release of iOS 8 we've started getting several types of crashes that we've never seen before.  Wondering if anyone else has seen this or has any suggestions.</p>
  
  <p>Several of them look similar to this:</p>
  
  <pre><code>Thread : Crashed: com.apple.NSURLSession-work
  0  libsystem_kernel.dylib         0x2fd3adfc __pthread_kill + 8
  1  libsystem_pthread.dylib        0x2fdb8d37 pthread_kill + 62
  2  libsystem_c.dylib              0x2fcda909 abort + 76
  3  libsystem_malloc.dylib         0x2fd6b3af szone_error + 334
  4  libsystem_malloc.dylib         0x2fd6b637 free_small_botch + 66
  5  CFNetwork                      0x21a63935 HTTPMessage::ensureParserFinished() + 72
  6  CFNetwork                      0x21a7aad3 HTTPMessage::copyHeaderFieldValue(__CFString const*) + 18
  7  CFNetwork                      0x21b43e87 HTTPSniffing::checkRequestAndUpdateResponseForSniffingPurposes(_CFURLRequest const*, _CFURLResponse*) + 130
  8  CFNetwork                      0x21b15ddd URLConnectionClient::_loaderClientEvent_DidReceiveResponse(_CFURLResponse*) + 340
  9  CFNetwork                      0x21b1b7d9 ___ZN19URLConnectionLoader26protocolDidReceiveResponseEP14_CFURLResponse_block_invoke + 24
  10 CFNetwork                      0x21ac9e03 ___ZN20ClassicURLConnection21withLoaderClientAsyncEU13block_pointerFvP21LoaderClientInterfaceE_block_invoke + 14
  11 CFNetwork                      0x21b14ca9 ___ZNK25URLConnectionInstanceData18withWorkQueueAsyncEU13block_pointerFvvE_block_invoke + 12
  12 libdispatch.dylib              0x2fc548cb _dispatch_call_block_and_release + 10
  13 libdispatch.dylib              0x2fc5c651 _dispatch_queue_drain + 952
  14 libdispatch.dylib              0x2fc5709d _dispatch_queue_invoke + 84
  15 libdispatch.dylib              0x2fc5dba1 _dispatch_root_queue_drain + 320
  16 libdispatch.dylib              0x2fc5ecd7 _dispatch_worker_thread3 + 94
  17 libsystem_pthread.dylib        0x2fdb5e31 _pthread_wqthread + 668
  </code></pre>
  
  <p>Thanks,
  Dan</p>