We have a complex applicaton which does a significant amount of networking. We are seeing crashes on non-English locales, with over 50% coming from systems with a Japanese locale. These crashes only occur on 10.12 and unfortunately we can not reproduce. None of our code is on the stack of the crashing thread. Below are 2 different callstacks of crashes, with the first being far more prevalent. Any ideas?
# ChildEBP RetAddr 00 0000000000000000 0000000000000000 security!void Security::DataWalkers::walk<Security::DataWalkers::SizeWalker>+0xd 01 0000000000000000 0000000000000000 security!void Security::DataWalkers::enumerateArray<Security::DataWalkers::SizeWalker, Security::SampleGroup, Security::CssmSample>+0x5f 02 0000000000000000 0000000000000000 security!Security::DataWalkers::Copier<Security::AccessCredentials>::Copier+0x3f 03 0000000000000000 0000000000000000 security!Security::SecurityServer::DatabaseAccessCredentials::DatabaseAccessCredentials+0x1c 04 0000000000000000 0000000000000000 security!Security::SecurityServer::ClientSession::authenticateDb+0x26 05 0000000000000000 0000000000000000 security!SSDLSession::Authenticate+0x4f 06 0000000000000000 0000000000000000 security!cssm_Authenticate+0x62 07 0000000000000000 0000000000000000 security!_CSSM_DL_Authenticate+0x56 08 0000000000000000 0000000000000000 security!Security::CssmClient::DbImpl::open+0x133 09 0000000000000000 0000000000000000 security!Security::CssmClient::DbImpl::dbBlobVersion+0xf2 0a 0000000000000000 0000000000000000 security!Security::KeychainCore::KeychainImpl::performKeychainUpgradeIfNeeded+0x254 0b 0000000000000000 0000000000000000 security!Security::KeychainCore::KCCursorImpl::newKeychain+0x24 0c 0000000000000000 0000000000000000 security!Security::KeychainCore::KCCursorImpl::next+0xd1 0d 0000000000000000 0000000000000000 security!_SecIdentityCopyPreference+0x298 0e 0000000000000000 0000000000000000 cfnetwork!HTTPProtocolSSLSupport::getSSLCertsCached+0xf0 0f 0000000000000000 0000000000000000 cfnetwork!HTTPProtocol::copyProtocolPropertiesForStream+0x26d 10 0000000000000000 0000000000000000 cfnetwork!____ZN4Tube23_onqueue_prepConnectionEU13block_pointerFvvEU13block_pointerFviE_block_invoke.81+0x26 11 0000000000000000 0000000000000000 libdispatch_dylib!__dispatch_client_callout+0x8 12 0000000000000000 0000000000000000 libdispatch_dylib!__dispatch_block_invoke_direct+0x142 13 0000000000000000 0000000000000000 cfnetwork!RunloopBlockContext::_invoke_block+0x18 14 0000000000000000 0000000000000000 corefoundation!_CFArrayApplyFunction+0x44 15 0000000000000000 0000000000000000 cfnetwork!RunloopBlockContext::perform+0x89 16 0000000000000000 0000000000000000 cfnetwork!MultiplexerSource::perform+0x11a 17 0000000000000000 0000000000000000 cfnetwork!MultiplexerSource::_perform+0x48 18 0000000000000000 0000000000000000 corefoundation!___CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__+0x11 19 0000000000000000 0000000000000000 corefoundation!___CFRunLoopDoSources0+0x22d 1a 0000000000000000 0000000000000000 corefoundation!___CFRunLoopRun+0x3a6 1b 0000000000000000 0000000000000000 corefoundation!_CFRunLoopRunSpecific+0x1a4 1c 0000000000000000 0000000000000000 cfnetwork!NSURLConnection_Loader::_resourceLoadLoop_+0x139 1d 0000000000000000 0000000000000000 foundation!___NSThread__start__+0x4db 1e 0000000000000000 0000000000000000 libsystem_pthread_dylib!__pthread_body+0xb4 1f 0000000000000000 0000000000000000 libsystem_pthread_dylib!__pthread_body+0x0 20 0000000000000000 0000000000000000 libsystem_pthread_dylib!_thread_start+0xd fffffffd 0000000000000000 0000000000000000 0x0
and
# ChildEBP RetAddr 00 0000000000000000 0000000000000000 security!void Security::DataWalkers::walk<Security::DataWalkers::SizeWalker>+0xd 01 0000000000000000 0000000000000000 security!void Security::DataWalkers::enumerateArray<Security::DataWalkers::SizeWalker, Security::SampleGroup, Security::CssmSample>+0x5f 02 0000000000000000 0000000000000000 security!_CSSM_CSP_CreateSignatureContext+0x38 03 0000000000000000 0000000000000000 security!Security::CssmClient::SigningContext::activate+0xb8 04 0000000000000000 0000000000000000 security!SecCDSAKeyCopyOperationResult+0xdba 05 0000000000000000 0000000000000000 security!_SecKeyRunAlgorithmAndCopyResult+0xe9 06 0000000000000000 0000000000000000 security!___SecKeyMessageToDigestAdaptor_block_invoke+0x55 07 0000000000000000 0000000000000000 security!___PerformWithCFDataBuffer_block_invoke+0x42 08 0000000000000000 0000000000000000 security!_PerformWithBuffer+0x50 09 0000000000000000 0000000000000000 security!_SecKeyMessageToDigestAdaptor+0xdc 0a 0000000000000000 0000000000000000 security!_SecKeyRunAlgorithmAndCopyResult+0x18d 0b 0000000000000000 0000000000000000 security!_SecKeyVerifySignature+0x6d 0c 0000000000000000 0000000000000000 security!_VFY_VerifyAll+0x88 0d 0000000000000000 0000000000000000 security!_VFY_VerifyData+0x17 0e 0000000000000000 0000000000000000 security!_SecCmsSignerInfoVerifyWithPolicy+0x28b 0f 0000000000000000 0000000000000000 security!_SecCmsSignedDataVerifySignerInfo+0x88 10 0000000000000000 0000000000000000 security!_CMSDecoderCopySignerStatus+0xb0 11 0000000000000000 0000000000000000 security!Security::CodeSigning::SecStaticCode::verifySignature+0x16c 12 0000000000000000 0000000000000000 security!Security::CodeSigning::SecStaticCode::validateDirectory+0x5c 13 0000000000000000 0000000000000000 security!Security::CodeSigning::SecStaticCode::validateNonResourceComponents+0xf 14 0000000000000000 0000000000000000 security!Security::CodeSigning::SecStaticCode::staticValidateCore+0x1a 15 0000000000000000 0000000000000000 security!Security::CodeSigning::SecStaticCode::staticValidate+0x47 16 0000000000000000 0000000000000000 security!_SecStaticCodeCheckValidityWithErrors+0xa4 17 0000000000000000 0000000000000000 quicklook!_QLCheckAppleSignature+0x58 18 0000000000000000 0000000000000000 quicklook!__QLLoadPluginAtURL+0x586 19 0000000000000000 0000000000000000 quicklook!____QLLaunchUpdatingThread_block_invoke+0x648 1a 0000000000000000 0000000000000000 libdispatch_dylib!__dispatch_call_block_and_release+0xc 1b 0000000000000000 0000000000000000 libdispatch_dylib!__dispatch_client_callout+0x8 1c 0000000000000000 0000000000000000 libdispatch_dylib!__dispatch_queue_serial_drain+0x380 1d 0000000000000000 0000000000000000 libdispatch_dylib!__dispatch_queue_invoke+0x416 1e 0000000000000000 0000000000000000 libdispatch_dylib!__dispatch_root_queue_drain+0x1dc 1f 0000000000000000 0000000000000000 libdispatch_dylib!__dispatch_worker_thread3+0x63 20 0000000000000000 0000000000000000 libsystem_pthread_dylib!__pthread_wqthread+0x513 21 0000000000000000 0000000000000000 libsystem_pthread_dylib!_start_wqthread+0xd fffffffd 0000000000000000 0000000000000000 0x0
Thank you for your time.