BUG #8445: the database system is in recovery mode

The following bug has been logged on the website:

Bug reference: 8445
Logged by: diaoqiwei
Email address: dqwhappyday(at)163(dot)com
PostgreSQL version: 9.0.0
Operating system: centos
Description:

2013-09-11 01:03:19 CST PANIC: stuck spinlock (0x2af93779bcd8) detected at
dynahash.c:981
2013-09-11 01:03:19 CST STATEMENT: select
user_id,user_password,user_nameen,user_namecn,user_officephone,user_mobile
from oa_user where user_state=0 and user_nameen=$1
2013-09-11 01:03:22 CST PANIC: stuck spinlock (0x2af93779bcd8) detected at
dynahash.c:981
2013-09-11 01:03:22 CST STATEMENT: select
user_id,user_password,user_nameen,user_namecn,user_officephone,user_mobile
from oa_user where user_state=0 and user_nameen=$1
2013-09-11 01:03:27 CST PANIC: stuck spinlock (0x2af93779bcd8) detected at
dynahash.c:981
2013-09-11 01:03:27 CST STATEMENT: select
user_id,user_password,user_nameen,user_namecn,user_officephone,user_mobile
from oa_user where user_state=0 and user_nameen=$1
2013-09-11 01:03:30 CST LOG: server process (PID 14539) was terminated by
signal 6: Aborted
2013-09-11 01:03:30 CST LOG: terminating any other active server processes
2013-09-11 01:03:30 CST FATAL: the database system is in recovery mode
2013-09-11 01:03:30 CST FATAL: the database system is in recovery mode
2013-09-11 01:03:30 CST FATAL: the database system is in recovery mode
2013-09-11 01:03:30 CST FATAL: the database system is in recovery mode
2013-09-11 01:03:30 CST FATAL: the database system is in recovery mode
2013-09-11 01:03:30 CST FATAL: the database system is in recovery mode
2013-09-11 01:03:30 CST FATAL: the database system is in recovery mode
2013-09-11 01:03:30 CST FATAL: the database system is in recovery mode
2013-09-11 01:03:30 CST FATAL: the database system is in recovery mode