[zeromq-dev] Assertion failure in fc.cpp:117

[Pieter Hintjens]

It still asserts, and in the same place (2 lines further, because of the patch).

On Fri, Nov 20, 2015 at 10:43 AM, Doron Somech <somdoron at gmail.com> wrote:
> So I suspect the pipe is being terminated before the messaging is being read
> fully.
>
> I made this patch to try to find out if the issue actually happen while the
> pipe is being terminated, can you test it? If my guess is correct the code
> should still assert but in a different place, which will help find the
> problem.
>
> https://github.com/somdoron/libzmq/commit/ed9368f590b7770560fef0f9c472bb32fe8f4467
>
>
> On Thu, Nov 19, 2015 at 4:58 PM, Pieter Hintjens <ph at imatix.com> wrote:
>>
>> Seems we hit the same issue already:
>> https://github.com/zeromq/libzmq/issues/1143 (unresolved)
>>
>> On Thu, Nov 19, 2015 at 4:57 PM, Pieter Hintjens <ph at imatix.com> wrote:
>> > Here it is:
>> >
>> > (gdb) bt
>> > #0  0x00007fa44048ecc9 in __GI_raise (sig=sig at entry=6) at
>> > ../nptl/sysdeps/unix/sysv/linux/raise.c:56
>> > #1  0x00007fa4404920d8 in __GI_abort () at abort.c:89
>> > #2  0x00007fa440206699 in zmq::zmq_abort
>> > (errmsg_=errmsg_ at entry=0x7fa44023ed3a "!more") at src/err.cpp:84
>> > #3  0x00007fa440206c02 in zmq::fq_t::recvpipe
>> > (this=this at entry=0x7fa4180364f0, msg_=msg_ at entry=0x7fa4180a50e8,
>> >     pipe_=pipe_ at entry=0x7fa4277fdcc8) at src/fq.cpp:117
>> > #4  0x00007fa44021c6b3 in zmq::router_t::xrecv (this=0x7fa418036060,
>> > msg_=0x7fa4180a50e8) at src/router.cpp:302
>> > #5  0x00007fa4402230cf in zmq::socket_base_t::recv
>> > (this=this at entry=0x7fa418036060, msg_=msg_ at entry=0x7fa4180a50e8,
>> >     flags_=flags_ at entry=0) at src/socket_base.cpp:1087
>> > #6  0x00007fa44023c329 in s_recvmsg (s_=s_ at entry=0x7fa418036060,
>> > msg_=0x7fa4180a50e8, flags_=flags_ at entry=0) at src/zmq.cpp:459
>> > #7  0x00007fa44023c56a in zmq_msg_recv (msg_=<optimized out>,
>> > s_=s_ at entry=0x7fa418036060, flags_=flags_ at entry=0) at src/zmq.cpp:604
>> > #8  0x00007fa44023c57e in zmq_recvmsg (s_=s_ at entry=0x7fa418036060,
>> > msg_=<optimized out>, flags_=flags_ at entry=0) at src/zmq.cpp:468
>> > #9  0x00007fa440a61916 in zframe_recv
>> > (source=source at entry=0x7fa418036060) at src/zframe.c:120
>> > #10 0x00007fa440a6b6c4 in zmsg_recv
>> > (source=source at entry=0x7fa418004da0) at src/zmsg.c:105
>> > #11 0x00007fa440825ca9 in zre_msg_recv (input=0x7fa418004da0) at
>> > src/zre_msg.c:674
>> > #12 0x00007fa440829f55 in zyre_node_recv_peer (self=0x7fa41800f480) at
>> > src/zyre_node.c:627
>> > #13 zyre_node_actor (pipe=<optimized out>, args=<optimized out>) at
>> > src/zyre_node.c:879
>> > #14 0x00007fa440a526c3 in s_thread_shim (args=0x7fa420011420) at
>> > src/zactor.c:67
>> > #15 0x00007fa43ffcf182 in start_thread (arg=0x7fa4277fe700) at
>> > pthread_create.c:312
>> > #16 0x00007fa44055247d in clone () at
>> > ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
>> > (gdb)
>> >
>> > On Thu, Nov 19, 2015 at 4:56 PM, Doron Somech <somdoron at gmail.com>
>> > wrote:
>> >> Can you attach the stacktrace?
>> >>
>> >> On Nov 19, 2015 16:51, "Pieter Hintjens" <ph at imatix.com> wrote:
>> >>>
>> >>> Yes, I did mean fq.cpp, :-)
>> >>>
>> >>> The problem affects master and 4.1, and I didn't test older versions.
>> >>>
>> >>> On Thu, Nov 19, 2015 at 4:07 PM, Doron Somech <somdoron at gmail.com>
>> >>> wrote:
>> >>> > Any chance you meant fq.cpp?
>> >>> >
>> >>> > Which libzmq version?
>> >>> >
>> >>> > On Thu, Nov 19, 2015 at 10:48 AM, Pieter Hintjens <ph at imatix.com>
>> >>> > wrote:
>> >>> >>
>> >>> >> Hi all,
>> >>> >>
>> >>> >> I'm wondering if anyone has an idea what could be causing this code
>> >>> >> to
>> >>> >> fail. The test case is zyre/ztester_gossip; it creates and destroys
>> >>> >> peers randomly. That could be causing the problem.
>> >>> >>
>> >>> >> -Pieter
>> >>> >> _______________________________________________
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>> >>> >> http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>> >>> >
>> >>> >
>> >>> >
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