KafkaConsumer segfault

[vdeters]

Hello,
My KafkaConsumer segfaulted while sitting in a consume(1000) loop with nothing happening except repeated ERR__TIMED_OUT. Did I neglect to hook up some callback? Using master as of 4/6. Thanks,
Vince

(gdb) where
#0 0x00007ffff5b3b0f8 in ?? ()
#1 0x00007fffe6230d9b in RdKafka::log_cb_trampoline (rk=,

level=3, fac=<optimized out>, 
buf=0x7fffdd110900 "localhost:9092/bootstrap: Receive failed: Disconnected") at HandleImpl.cpp:55

#2 0x00007fffe5fc6403 in rd_kafka_log0 (rk=0xece000, extra=extra@entry=0x0,

level=level@entry=3, fac=fac@entry=0x7fffe6006a44 "FAIL", 
fmt=fmt@entry=0x7fffe6006bac "%s") at rdkafka.c:158

#3 0x00007fffe5fd43fd in rd_kafka_broker_fail (rkb=rkb@entry=0xed2700,

level=3, err=RD_KAFKA_RESP_ERR__TRANSPORT, 
fmt=fmt@entry=0x7fffe6006a81 "Receive failed: %s") at rdkafka_broker.c:270

#4 0x00007fffe5fd4a10 in rd_kafka_recv (rkb=rkb@entry=0xed2700)

at rdkafka_broker.c:1088

#5 0x00007fffe5fe0dc8 in rd_kafka_transport_io_event (rktrans=0xe69a20,

events=1) at rdkafka_transport.c:1027

#6 0x00007fffe5fe1ae8 in rd_kafka_transport_io_serve (

rktrans=<optimized out>, timeout_ms=<optimized out>)
at rdkafka_transport.c:1072

#7 0x00007fffe5fd66bc in rd_kafka_broker_serve (rkb=rkb@entry=0xed2700,

timeout_ms=timeout_ms@entry=10) at rdkafka_broker.c:2132

#8 0x00007fffe5fd6991 in rd_kafka_broker_ua_idle (rkb=rkb@entry=0xed2700,

timeout_ms=timeout_ms@entry=0) at rdkafka_broker.c:2179

#9 0x00007fffe5fd72c1 in rd_kafka_broker_thread_main (arg=arg@entry=0xed2700)

at rdkafka_broker.c:3391

#10 0x00007fffe60005f7 in _thrd_wrapper_function (aArg=)

at tinycthread.c:611

#11 0x00007ffff4a10df5 in start_thread () from /lib64/libpthread.so.0
#12 0x00007ffff4d1b1ad in clone () from /lib64/libc.so.6

[edenhill]

Looks like your log callback instance went out of scope.
Try running your program with valgrind to see if it can help you track it down.

[vdeters]

I'm not sure I have a log callback instance...is it something different than RdKafka::EventCb?

[edenhill]

It is the same. Can you paste your conf setup code and EventCb class instantiation?

[vdeters]

Ok, my RdKafka::EventCb instance had indeed gone out of scoped. That's fixed, and I don't get the "Receive failed" error either, so that must have been related.