Pub-Proxy-Sub Mode,High frequency sending long message,easy to cause release error after cache application about zguide HOT 2 OPEN

Hey there. You'll likely get higher visibility / possible answers on https://github.com/zeromq/libzmq. What's your guess on why this is happening (or what's the specific errors under each case)?

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Yes, the program use the libzmq, coredump for 2 examples are as follows:

Example 1:
(gdb) bt
#0 0x080b12bc in zmq::msg_t::data (this=0x7e6eddc) at ../ksm_app/zmq/src/msg.cpp:401
#1 0x0810b9da in zmq_msg_data (msg_=0x7e6eddc) at ../ksm_app/zmq/src/zmq.cpp:666
#2 0x0806be1a in ipc_socket2_send (this=0x8191950, topic_len=45, topic=0x8116ff0, msg_len=4108, msg=0x7e6eea0)

(gdb) info threads
Id Target Id Frame
10 pid 1081387 tid 10 (CONDVAR) 0x01045808 in SyncCondvarWait_r ()
from C:\qnx660\target\qnx6\armle-v7\lib\libc.so.3

• 9 pid 1081387 tid 9 (STOPPED) 0x080b12bc in zmq::msg_t::data (this=0x7e6eddc) at ../ksm_app/zmq/src/msg.cpp:401
  8 pid 1081387 tid 8 (SIGWAITINFO) 0x01045794 in SignalWaitinfo ()
  from C:\qnx660\target\qnx6\armle-v7\lib\libc.so.3
  7 pid 1081387 tid 7 (SIGWAITINFO) 0x01045794 in SignalWaitinfo ()
  from C:\qnx660\target\qnx6\armle-v7\lib\libc.so.3
  6 pid 1081387 tid 6 (SIGWAITINFO) 0x01045794 in SignalWaitinfo ()
  from C:\qnx660\target\qnx6\armle-v7\lib\libc.so.3
  5 pid 1081387 tid 5 (STOPPED) 0x01045ba4 in TimerTimeout () from C:\qnx660\target\qnx6\armle-v7\lib\libc.so.3
  4 pid 1081387 tid 4 (STOPPED) 0x01045ba4 in TimerTimeout () from C:\qnx660\target\qnx6\armle-v7\lib\libc.so.3
  3 pid 1081387 tid 3 (STOPPED) 0x01045ba4 in TimerTimeout () from C:\qnx660\target\qnx6\armle-v7\lib\libc.so.3
  1 pid 1081387 tid 1 (SIGWAITINFO) 0x01045794 in SignalWaitinfo ()
  from C:\qnx660\target\qnx6\armle-v7\lib\libc.so.3

Example 2:
(gdb) bt
#0 0x0106ca40 in generic_memcpy () from C:\qnx660\target\qnx6\armle-v7\lib\libc.so.3
#1 0x08100b00 in zmq::encoder_base_tzmq::v3_1_encoder_t::encode (this=0x8163638, data=0x7ecff20, size=1111)
at ../ksm_app/zmq/src/encoder.hpp:119
#2 0x080f09ce in zmq::stream_engine_base_t::out_event (this=0x81a22c0)
at ../ksm_app/zmq/src/stream_engine_base.cpp:358
#3 0x080c44e6 in zmq::poll_t::loop (this=0x814d230) at ../ksm_app/zmq/src/poll.cpp:177
#4 0x080c6ac2 in zmq::worker_poller_base_t::worker_routine (arg_=0x814d230) at ../ksm_app/zmq/src/poller_base.cpp:146
#5 0x080f6832 in thread_routine (arg_=0x814d280) at ../ksm_app/zmq/src/thread.cpp:257
#6 0x010257bc in timer_settime () from C:\qnx660\target\qnx6\armle-v7\lib\libc.so.3
(gdb) info threads
Id Target Id Frame
10 pid 1130533 tid 10 (NANOSLEEP) 0x01045ba4 in TimerTimeout () from C:\qnx660\target\qnx6\armle-v7\lib\libc.so.3
9 pid 1130533 tid 9 (STOPPED) 0x01045ba4 in TimerTimeout () from C:\qnx660\target\qnx6\armle-v7\lib\libc.so.3
8 pid 1130533 tid 8 (SIGWAITINFO) 0x01045794 in SignalWaitinfo ()
from C:\qnx660\target\qnx6\armle-v7\lib\libc.so.3

• 7 pid 1130533 tid 7 (READY) 0x0106ca40 in __generic_memcpy () from C:\qnx660\target\qnx6\armle-v7\lib\libc.so.3
  6 pid 1130533 tid 6 (SIGWAITINFO) 0x01045794 in SignalWaitinfo ()
  from C:\qnx660\target\qnx6\armle-v7\lib\libc.so.3
  5 pid 1130533 tid 5 (STOPPED) 0x01045ba4 in TimerTimeout () from C:\qnx660\target\qnx6\armle-v7\lib\libc.so.3
  4 pid 1130533 tid 4 (STOPPED) 0x01045ba4 in TimerTimeout () from C:\qnx660\target\qnx6\armle-v7\lib\libc.so.3
  3 pid 1130533 tid 3 (STOPPED) 0x01045ba4 in TimerTimeout () from C:\qnx660\target\qnx6\armle-v7\lib\libc.so.3
  2 pid 1130533 tid 2 (STOPPED) 0x01045ba4 in TimerTimeout () from C:\qnx660\target\qnx6\armle-v7\lib\libc.so.3
  1 pid 1130533 tid 1 (SIGWAITINFO) 0x01045794 in SignalWaitinfo ()
  from C:\qnx660\target\qnx6\armle-v7\lib\libc.so.3

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