Caught Segmentation fault, suspect faulting address 0x0
Backtrace (use tools/stack_decode.py to get line numbers):
#0: __restore_rt [0x7f9b03fde390] ??:0
#1: Envoy::Http::CodecClient::onEvent() [0xa82e4f] /usr/include/c++/7/bits/stl_list.h:962
 (inlined by) external/envoy/source/common/http/codec_client.cc:85
#2: Envoy::Network::ConnectionImpl::raiseEvent() [0x8f8635] /usr/include/c++/7/bits/stl_list.h:162
 (inlined by) external/envoy/source/common/network/connection_impl.cc:332
#3: Envoy::Network::ConnectionImpl::closeSocket() [0x8f7b55] external/envoy/source/common/network/connection_impl.cc:200
#4: Envoy::Network::ConnectionImpl::onReadReady() [0x8f7f7e] external/envoy/source/common/network/connection_impl.cc:521
#5: Envoy::Network::ConnectionImpl::onFileEvent() [0x8f876a] external/envoy/source/common/network/connection_impl.cc:489
#6: Envoy::Event::FileEventImpl::assignEvents()::{lambda()#1}::_FUN() [0x8f239a] external/envoy/source/common/event/file_event_impl.cc:66
#7: event_process_active_single_queue.isra.33 [0xc6ff69] /build/tmp/_bazel_bazel/b570b5ccd0454dc9af9f65ab1833764d/execroot/envoy/external/com_github_libevent_libevent/event.c:1639
 (inlined by) /build/tmp/_bazel_bazel/b570b5ccd0454dc9af9f65ab1833764d/execroot/envoy/external/com_github_libevent_libevent/event.c:1698
#8: event_base_loop [0xc71c5f] /build/tmp/_bazel_bazel/b570b5ccd0454dc9af9f65ab1833764d/execroot/envoy/external/com_github_libevent_libevent/event.c:1806
 (inlined by) /build/tmp/_bazel_bazel/b570b5ccd0454dc9af9f65ab1833764d/execroot/envoy/external/com_github_libevent_libevent/event.c:2041
#9: Envoy::Event::DispatcherImpl::run() [0x8f0fca] external/envoy/source/common/event/dispatcher_impl.cc:179
#10: Envoy::Server::WorkerImpl::threadRoutine() [0x8eb32e] bazel-out/k8-opt/bin/external/envoy/source/common/common/_virtual_includes/minimal_logger_lib/common/common/logger.h:276
 (inlined by) external/envoy/source/server/worker_impl.cc:105
#11: Envoy::Thread::ThreadImplPosix::ThreadImplPosix()::{lambda()#1}::_FUN() [0xe74195] external/envoy/source/common/common/posix/thread_impl.cc:41
#12: start_thread [0x7f9b03fd46ba] ??:0