Backtrace:
#0  0x000000000074d64d in evbuffer_peek (buffer=0xee87960, len=-1, start_at=<optimized out>, vec=0x7fbab1a6f830, n_vec=288926) at buffer.c:2814
#0  0x000000000074d64d in evbuffer_peek (buffer=0xee87960, len=-1, start_at=<optimized out>, vec=0x7fbab1a6f830, n_vec=288926) at buffer.c:2814
#1  0x0000000000616a3b in Buffer::OwnedImpl::getRawSlices (this=this@entry=0x1f3fcf80, out=out@entry=0x7fbab1ed8260, out_size=out_size@entry=288926) at /srv/repos/envoy-private/envoy/source/common/buffer/buffer_impl.cc:44
#2  0x00000000006d23d7 in Ssl::ConnectionImpl::doWriteToSocket (this=0x1f3fcf00) at /srv/repos/envoy-private/envoy/source/common/ssl/connection_impl.cc:143
#3  0x00000000006a4c65 in Network::ConnectionImpl::onWriteReady (this=0x1f3fcf00) at /srv/repos/envoy-private/envoy/source/common/network/connection_impl.cc:374
#4  0x000000000075c1b4 in event_persist_closure (ev=<optimized out>, base=0x315ab00) at event.c:1580
#5  event_process_active_single_queue (base=base@entry=0x315ab00, activeq=0x2fbed50, max_to_process=max_to_process@entry=2147483647, endtime=endtime@entry=0x0) at event.c:1639
#6  0x000000000075cb9f in event_process_active (base=0x315ab00) at event.c:1738
#7  event_base_loop (base=0x315ab00, flags=0) at event.c:1961
#8  0x0000000000615338 in Worker::threadRoutine (this=0x31fe860) at /srv/repos/envoy-private/envoy/source/server/worker.cc:62
#9  0x0000000000619ba1 in Thread::Thread::Thread(std::function<void ()>)::{lambda(void*)#1}::_FUN(void*) () at /usr/include/c++/4.9/functional:2440
#10 0x00007fbab4681184 in start_thread (arg=0x7fbab2341700) at pthread_create.c:312
#11 0x00007fbab3ea037d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111