[Openais] corosync crash and a hang

[Christine Caulfield]

Since logsys2 was committed I can easily make corosync crash with any
corosync-objctl command. It crashes in a very unhelpful way ... with
mention of a GDB bug. So it might be stack related I suppose. In
particular 'corosync-objctl -a' or 'corosync-objctl -w quorum.quorate=1'

Also sometimes I see startup hangs where corosync doesn't even get
going. These look to be threads deadlocked on logsys condition variables:

(gdb) thr a a bt


Thread 3 (Thread 0xb7b39b90 (LWP 6929)):
#0  0x00110416 in __kernel_vsyscall ()
#1  0x009f6ba5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib/libpthread.so.0
#2  0x0806e3e9 in wthread_wait () at logsys.c:434
#3  0x0806e27a in logsys_worker_thread (data=0x0) at logsys.c:452
#4  0x009f332f in start_thread () from /lib/libpthread.so.0
#5  0x0092e20e in clone () from /lib/libc.so.6

Thread 2 (Thread 0xb7f36230 (LWP 6928)):
#0  0x00110416 in __kernel_vsyscall ()
#1  0x00923a57 in poll () from /lib/libc.so.6
#2  0x080532be in prioritized_timer_thread (data=0x0) at timer.c:123
#3  0x009f332f in start_thread () from /lib/libpthread.so.0
#4  0x0092e20e in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb7f0b6c0 (LWP 6925)):
#0  0x00110416 in __kernel_vsyscall ()
#1  0x009f6ba5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib/libpthread.so.0
#2  0x0806e3e9 in wthread_wait () at logsys.c:434
#3  0x0806e47f in wthread_create () at logsys.c:511
---Type <return> to continue, or q <return> to quit---
#4  0x0806e554 in _logsys_wthread_create () at logsys.c:540
#5  0x0806ef8e in logsys_fork_completed () at logsys.c:790
#6  0x0804dd89 in main (argc=2, argv=0xbfa36124) at main.c:644
(gdb)


Neither of these happened to me before the logsys2 commit.

Chrissie