> From: Dhammika Pathirana <dhamm...@gmail.com>
> Subject: Re: [zeromq-dev] nmap patch for github issues 147+149
>
> Do you have a coredump?
> Could you post a backtrace, run "thread apply all bt" in gdb.
Hi, so far my patches are working good for me. No more coredumps. I've
undone the patches though and only patched the "zmq_engine_t::error()"
function as below. Without that patch it will already coredump on the
zmq_assert(inout) and not reach the more interesting error:
So I used this patch:
=========patch:=========
void zmq::zmq_engine_t::error ()
{
if (plugged)
{
zmq_assert (inout);
inout->detach ();
unplug ();
}
if(ephemeral_inout)
{
ephemeral_inout->detach ();
}
delete this; //do not delete, will cause dangling pointer
}
==================
then I run nmap as following:
nmap -sV -n xxx.xxx.xxx.xxx -p 5550-5570
(my program is listening on some zeromq sockets in that port range)
result:
[...]
pure virtual method called
terminate called without an active exception
Aborted (core dumped)
=========gdb bt:=========
(gdb) bt
#0 0xb7d18aa6 in raise () from /lib/libc.so.6
#1 0xb7d1a1b3 in abort () from /lib/libc.so.6
#2 0xb7f174d0 in __gnu_cxx::__verbose_terminate_handler () from
/usr/lib/libstdc++.so.6
#3 0xb7f14ef5 in std::exception::what () from /usr/lib/libstdc++.so.6
#4 0xb7f14f32 in std::terminate () from /usr/lib/libstdc++.so.6
#5 0xb7f15615 in __cxa_pure_virtual () from /usr/lib/libstdc++.so.6
#6 0x080f3ca6 in zmq::session_t::process_attach (this=0x82b59c0,
engine_=0x83327e8, peer_identity_=@0xb6ced6dc) at session.cpp:268
#7 0x080e50f2 in zmq::object_t::process_command (this=0x82b59c0,
cmd_=@0xb6ced728) at object.cpp:86
#8 0x080e3ca7 in zmq::io_thread_t::in_event (this=0x82a5e60) at
io_thread.cpp:82
#9 0x080eea37 in zmq::epoll_t::loop (this=0x82a40a0) at epoll.cpp:160
#10 0x080f6be8 in thread_routine (arg_=0x82a40e4) at thread.cpp:70
#11 0xb7f4e1eb in start_thread () from /lib/libpthread.so.0
#12 0xb7daf7fe in clone () from /lib/libc.so.6
==================
=========gdb thread apply all bt:=========
(gdb) thread apply all bt
Thread 8 (process 18547):
#0 0xb7f51fe1 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1 0x080ab27d in yaaf::Trigger::wait (this=0x81eade0) at
/data/home/thijs/git/yaaf/public/libyaaf/yaaf_threading.h:86
#2 0x080a8d20 in yaaf::WaitContext () at
/data/home/thijs/git/yaaf/public/libyaaf/yaaf_context.cpp:77
#3 0x08096c02 in main (argc=1, argv=0xbff710cc) at
/data/home/thijs/git/yaaf/apiproxy/main.cpp:38
Thread 7 (process 18548):
#0 0xb7f55a89 in do_sigwait () from /lib/libpthread.so.0
#1 0xb7f55b2f in sigwait () from /lib/libpthread.so.0
#2 0x080dfc09 in sigwaitThread () at
/data/home/thijs/git/yaaf/public/libycommon/sighandler.cpp:22
#3 0xb7f4e1eb in start_thread () from /lib/libpthread.so.0
#4 0xb7daf7fe in clone () from /lib/libc.so.6
Thread 6 (process 18549):
#0 0xb7d7b96c in std::exception::what () from /lib/libc.so.6
#1 0xb7d7b77f in sleep () from /lib/libc.so.6
#2 0x080c3170 in yaaf::lib::YStat::thread_entry_point (ctx=0x0) at
/data/home/thijs/git/yaaf/public/libystat/ystat.cpp:175
#3 0xb7f4e1eb in start_thread () from /lib/libpthread.so.0
#4 0xb7daf7fe in clone () from /lib/libc.so.6
Thread 5 (process 18551):
#0 0xb7da6579 in poll () from /lib/libc.so.6
#1 0x08108c1d in do_io (v=0x82bc000) at src/mt_adaptor.c:299
#2 0xb7f4e1eb in start_thread () from /lib/libpthread.so.0
#3 0xb7daf7fe in clone () from /lib/libc.so.6
Thread 4 (process 18552):
#0 0xb7f51fe1 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1 0x08108a80 in do_completion (v=0x82bc000) at src/mt_adaptor.c:330
#2 0xb7f4e1eb in start_thread () from /lib/libpthread.so.0
#3 0xb7daf7fe in clone () from /lib/libc.so.6
Thread 3 (process 18553):
#0 0xb7da6579 in poll () from /lib/libc.so.6
#1 0x080e01e8 in zmq_poll (items_=0x82c01b0, nitems_=11,
timeout_=2000000) at zmq.cpp:412
#2 0x080a0fee in apiproxy::Device::run (this=0x82d5000) at
/data/home/thijs/git/yaaf/apiproxy/device_run.cpp:117
#3 0x080a6b2b in yaaf::Context::thread_entry_point (ctx=0x82d500c) at
/data/home/thijs/git/yaaf/public/libyaaf/yaaf_context.cpp:444
#4 0xb7f4e1eb in start_thread () from /lib/libpthread.so.0
#5 0xb7daf7fe in clone () from /lib/libc.so.6
Thread 2 (process 18554):
#0 0xb7dafebc in std::exception::what () from /lib/libc.so.6
#1 0x080d8687 in epoll_dispatch () at
/data/home/thijs/git/yaaf/public/libconfig/libconfig.cpp:62
#2 0x080ca9fb in event_base_loop () at
/data/home/thijs/git/yaaf/public/libconfig/libconfig.cpp:62
#3 0x080cb779 in event_base_dispatch () at
/data/home/thijs/git/yaaf/public/libconfig/libconfig.cpp:62
#4 0x080c258c in yaaf::BaseHttp::run (this=0x82ab060) at
/data/home/thijs/git/yaaf/public/libyaaf/yaaf_http.cpp:61
#5 0x080a6b2b in yaaf::Context::thread_entry_point (ctx=0x82ab060) at
/data/home/thijs/git/yaaf/public/libyaaf/yaaf_context.cpp:444
#6 0xb7f4e1eb in start_thread () from /lib/libpthread.so.0
#7 0xb7daf7fe in clone () from /lib/libc.so.6
Thread 1 (process 18550):
#0 0xb7d18aa6 in raise () from /lib/libc.so.6
#1 0xb7d1a1b3 in abort () from /lib/libc.so.6
#2 0xb7f174d0 in __gnu_cxx::__verbose_terminate_handler () from
/usr/lib/libstdc++.so.6
#3 0xb7f14ef5 in std::exception::what () from /usr/lib/libstdc++.so.6
#4 0xb7f14f32 in std::terminate () from /usr/lib/libstdc++.so.6
#5 0xb7f15615 in __cxa_pure_virtual () from /usr/lib/libstdc++.so.6
#6 0x080f3ca6 in zmq::session_t::process_attach (this=0x82b59c0,
engine_=0x83327e8, peer_identity_=@0xb6ced6dc) at session.cpp:268
#7 0x080e50f2 in zmq::object_t::process_command (this=0x82b59c0,
cmd_=@0xb6ced728) at object.cpp:86
#8 0x080e3ca7 in zmq::io_thread_t::in_event (this=0x82a5e60) at
io_thread.cpp:82
#9 0x080eea37 in zmq::epoll_t::loop (this=0x82a40a0) at epoll.cpp:160
#10 0x080f6be8 in thread_routine (arg_=0x82a40e4) at thread.cpp:70
#11 0xb7f4e1eb in start_thread () from /lib/libpthread.so.0
#12 0xb7daf7fe in clone () from /lib/libc.so.6
==================
Thijs
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