Hi all, I had run FreeRadius 2.1.7 in gdb and got this core dump Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x2aac59f0e940 (LWP 23452)] 0x000000309a85306b in ?? () from /usr/lib64/mysql/libmysqlclient_r.so.15 (gdb) bt #0 0x000000309a85306b in ?? () from /usr/lib64/mysql/libmysqlclient_r.so.15 #1 0x000000309a8533e9 in my_net_read () from /usr/lib64/mysql/libmysqlclient_r.so.15 #2 0x000000309a84cd1f in cli_safe_read () from /usr/lib64/mysql/libmysqlclient_r.so.15 #3 0x000000309a84e673 in mysql_real_connect () from /usr/lib64/mysql/libmysqlclient_r.so.15 #4 0x00002ae5ed7663fb in sql_init_socket (sqlsocket=0x4428d90, config=0x42d81f0) at sql_mysql.c:89 #5 0x00002ae5ed561e42 in connect_single_socket (sqlsocket=0x4428d90, inst=0x42d8180) at sql.c:56 #6 0x00002ae5ed562049 in rlm_sql_query (sqlsocket=0x4428d90, inst=0x42d8180, query=0x2aac59f0c2f0 " DELETE FROM radacct", ' ' <repeats 11 times>, "WHERE acctuniqueid = 'bffb320ed0f4f462'") at sql.c:523 #7 0x00002ae5ed560987 in rlm_sql_accounting (instance=0x42d8180, request=0x2aabb4033a20) at rlm_sql.c:1337 #8 0x0000000000419da9 in modcall (component=3, c=<value optimized out>, request=0x2aabb4033a20) at modcall.c:292 #9 0x000000000041733d in indexed_modcall (comp=3, idx=0, request=0x2aabb4033a20) at modules.c:691 #10 0x0000000000407f37 in rad_accounting (request=0x2aabb4033a20) at acct.c:93 #11 0x0000000000423ad1 in radius_handle_request (request=0x2aabb4033a20, fun=0x407ea0 <rad_accounting>) at event.c:3693 #12 0x000000000041cc83 in request_handler_thread (arg=<value optimized out>) at threads.c:492 #13 0x0000003e10206367 in start_thread () from /lib64/libpthread.so.0 #14 0x0000003e0f6d2f7d in clone () from /lib64/libc.so.6 Do you think that it is MySQL client library bug? How can I do now? Regards, Dinh