[zeromq-dev] Assertion failure in libzm msg.cpp:296 when reading from ZMQ_STREAM socket

Auer, Jens jens.auer at cgi.com
Wed Nov 18 10:29:12 CET 2015

Hi Pieter,

we are using zeroMQ 4.1.3. I managed to reproduce it on the current master branch:
#0  0x00007f8ff2c185d7 in raise () from /lib64/libc.so.6
#1  0x00007f8ff2c19cc8 in abort () from /lib64/libc.so.6
#2  0x00007f8ff2c11546 in __assert_fail_base () from /lib64/libc.so.6
#3  0x00007f8ff2c115f2 in __assert_fail () from /lib64/libc.so.6
#4  0x00007f8ff3a07bb9 in zmq::msg_t::set_metadata (this=this at entry=0x7f8fec06c668, metadata_=0x7f8fec06ec10) at src/msg.cpp:390
#5  0x00007f8ff3a25040 in zmq::stream_engine_t::push_raw_msg_to_session (this=0x7f8fec06c730, msg_=0x7f8fec06c668) at src/stream_engine.cpp:873
#6  0x00007f8ff3a25435 in zmq::stream_engine_t::restart_input (this=0x7f8fec06c730) at src/stream_engine.cpp:456
#7  0x00007f8ff3a190c2 in zmq::session_base_t::write_activated (this=0x16c0c50, pipe_=0x16c90f0) at src/session_base.cpp:284
#8  0x00007f8ff3a00eb4 in zmq::io_thread_t::in_event (this=0x16a2eb0) at src/io_thread.cpp:84
#9  0x00007f8ff39ffcde in zmq::epoll_t::loop (this=0x16a17c0) at src/epoll.cpp:178
#10 0x00007f8ff3a2d550 in thread_routine (arg_=0x16a1840) at src/thread.cpp:96
#11 0x00007f8ff37cadf5 in start_thread () from /lib64/libpthread.so.0
#12 0x00007f8ff2cd91ad in clone () from /lib64/libc.so.6

We are sending ~24MB/s from a ZMQ_STREAM socket in one process to a ZMQ_STREAM socket in the process where it crashes. The generator is a test tool generating in packets of ~1kb and then streamed to simulate a protocol which we have to implement. The crashing application is our main application which connected to the test tool, receives data and extracts packets from the stream to distribute it on a PUB socket. I will try with a minimal example when I have time, but currently we have to meet a deadline. 

Should I open an issue in the issue tracker?

Best wishes,

Jens Auer | CGI | Software-Engineer
CGI (Germany) GmbH & Co. KG
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T: +49 6151 36860 154
jens.auer at cgi.com
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Von: zeromq-dev-bounces at lists.zeromq.org [zeromq-dev-bounces at lists.zeromq.org]" im Auftrag von "Pieter Hintjens [ph at imatix.com]
Gesendet: Dienstag, 17. November 2015 15:29
An: ZeroMQ development list
Betreff: Re: [zeromq-dev] Assertion failure in libzm msg.cpp:296 when reading from ZMQ_STREAM socket

I don't see the assertion failure in msg.cpp:296...
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