Sshd core dump after logout

Question

I've noticed that sshd has been producing core dumps. The core dumps aren't affecting anything and appear to be produced after the ssh session ends.
/var/adm/messages shows:
Jun 30 09:59:59 www1 sshd[15453]: [ID 800047 auth.info] Accepted publickey for webstats from 123.123.123.123 port 4935 ssh2
Jun 30 10:00:01 www1 genunix: [ID 603404 kern.notice] NOTICE: core_log: sshd[15453] core dumped: /var/core/core_www1_sshd_0_0_1151625600_15453
A core dump isn't produced every time but only appears to happen after ssh connections from windows systems running cygwin.
Running adb on a core dump shows:
core file = core_www1_sshd_0_0_1151390790_3514 -- program ``/usr/lib/ssh/sshd
'' on platform i86pc
SIGSYS: Bad System Call
Like I said, it doesn't appear to be causing any problems. Any ideas on how to stop it?

Answer 1

Forgot to mention. We are calling OCISessionEnd before rolling through OCIServerDetach.
/* STATIC */
static void logout()
printf ("\n\nFreeing statement handles..\n");
if(stmthp) OCIHandleFree ((dvoid *) stmthp, (ub4) OCI_HTYPE_STMT);
printf ("Logging off...\n");
if(authp) OCISessionEnd (svchp, errhp, authp, (ub4) 0);