Problem: segv on multi-broker

[rpedde]

Reliable segv:

1. open write pipe on one broker
2. open corresponding read pipe on another broker
3. segv

14-05-01 18:02:48 I: joining cluster as DD561851F4DAA8B14004F9CF9F3C0CB5
14-05-01 18:02:48 N: starting zpipes_server service
14-05-01 18:02:48 N: binding zpipes service to 'ipc://@/zpipes/local'
14-05-01 18:02:48 I: ZPIPES server appeared at 616A81862091A61E1A61C70EC4C77DC9
14-05-01 18:02:53    825: start:
14-05-01 18:02:53    825:     INPUT
14-05-01 18:02:53    825:         $ lookup or create pipe
14-05-01 18:02:53    825:         $ open pipe reader

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff55b3700 (LWP 21517)]
0x00007ffff7bc5dcc in s_client_execute (self=0xffffffffffffffff, event=10)
    at zpipes_server_engine.h:521
521         self->next_event = event;
(gdb) bt
#0  0x00007ffff7bc5dcc in s_client_execute (self=0xffffffffffffffff, event=10)
    at zpipes_server_engine.h:521
#1  0x00007ffff7bc532c in engine_send_event (client=0xffffffffffffffff, 
    event=have_reader_event) at zpipes_server_engine.h:340
#2  0x00007ffff7bcb353 in pipe_attach_local_reader (self=0x7fffec001510, 
    reader=0x7fffec001890) at zpipes_server.c:220
#3  0x00007ffff7bcc44a in open_pipe_reader (self=0x7fffec001890) at zpipes_server.c:481
#4  0x00007ffff7bc60ff in s_client_execute (self=0x7fffec001890, event=2)
    at zpipes_server_engine.h:562
#5  0x00007ffff7bca95e in s_server_client_message (loop=0x60fcd0, item=0x61f3b0, 
    argument=0x60ecd0) at zpipes_server_engine.h:1447
#6  0x00007ffff776dc6c in zloop_start (self=0x60fcd0) at zloop.c:463
#7  0x00007ffff7bcaac7 in s_server_task (args=0x0, ctx=0x608ec0, pipe=0x6091f0)
    at zpipes_server_engine.h:1465
#8  0x00007ffff777915f in s_thread_shim (args=0x608e90) at zthread.c:81
#9  0x00007ffff6ce1b50 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#10 0x00007ffff72550ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#11 0x0000000000000000 in ?? ()
(gdb) 

[rpedde]

Likely the same thing, but this segv at the same place:

open read pipe
open corresponding write pipe
close read pipe
close write pipe
open read pipe (same pipe name as initial open)

segv

[hintjens]

I'll make a new issue, this is related to pipe reuse. It's happening on multi-broker, right?

[hintjens]

Closing, for issue #47