auth_pam plugin prevents startup

[Ammon Sutherland]

RHEL 5.9, 64bit.
Percona Server 5.5.31-rel30.3.520.rhel5 OR 5.5.33-rel31.1.566.rhel5

After installing the auth_pam plugin ('INSTALL PLUGIN auth_pam SONAME 'auth_pam.so';) in the server (which works) if I try to restart mysql it is unable to start and I get the following errors in the logs for both 5.5.31 and 5.5.33 builds

Oct 28 09:37:26 mysqld: You may download the Percona Server operations manual by visiting
Oct 28 09:37:26 mysqld: http://www.percona.com/software/percona-server/. You may find information
Oct 28 09:37:26 mysqld: in the manual which will help you identify the cause of the crash.
Oct 28 09:37:26 mysqld_safe: mysqld from pid file /var/lib/mysql/.pid ended
Oct 28 09:45:35 mysqld_safe: Starting mysqld daemon with databases from /var/lib/mysql
Oct 28 09:45:35 mysqld: 131028 9:45:35 [Warning] options --log-slow-admin-statements, --log-queries-not-using-indexes and --log-slow-slave-statements have no effect if --log_slow_queries is not set
Oct 28 09:45:35 mysqld: 14:45:35 UTC - mysqld got signal 11 ;
Oct 28 09:45:35 mysqld: This could be because you hit a bug. It is also possible that this binary
Oct 28 09:45:35 mysqld: or one of the libraries it was linked against is corrupt, improperly built,
Oct 28 09:45:35 mysqld: or misconfigured. This error can also be caused by malfunctioning hardware.
Oct 28 09:45:35 mysqld: We will try our best to scrape up some info that will hopefully help
Oct 28 09:45:35 mysqld: diagnose the problem, but since we have already crashed,
Oct 28 09:45:35 mysqld: something is definitely wrong and this may fail.
Oct 28 09:45:35 mysqld: Please help us make Percona Server better by reporting any
Oct 28 09:45:35 mysqld: bugs at http://bugs.percona.com/
Oct 28 09:45:35 mysqld:
Oct 28 09:45:35 mysqld: key_buffer_size=8388608
Oct 28 09:45:35 mysqld: read_buffer_size=262144
Oct 28 09:45:35 mysqld: max_used_connections=0
Oct 28 09:45:35 mysqld: max_threads=1502
Oct 28 09:45:35 mysqld: thread_count=0
Oct 28 09:45:35 mysqld: connection_count=0
Oct 28 09:45:35 mysqld: It is possible that mysqld could use up to
Oct 28 09:45:35 mysqld: key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1949244 K bytes of memory
Oct 28 09:45:35 mysqld: Hope that's ok; if not, decrease some variables in the equation.
Oct 28 09:45:35 mysqld:
Oct 28 09:45:35 mysqld: Thread pointer: 0x7fff6df2f910
Oct 28 09:45:35 mysqld: Attempting backtrace. You can use the following information to find out
Oct 28 09:45:35 mysqld: where mysqld died. If you see no messages after this, something went
Oct 28 09:45:35 mysqld: terribly wrong...
Oct 28 09:45:35 mysqld: stack_bottom = 7fff6df32a60 thread_stack 0x40000
Oct 28 09:45:35 mysqld: /usr/sbin/mysqld(my_print_stacktrace+0x35)[0x7b81e5]
Oct 28 09:45:35 mysqld: /usr/sbin/mysqld(handle_fatal_signal+0x4b4)[0x692c94]
Oct 28 09:45:35 mysqld: /lib64/libpthread.so.0[0x3212c0eca0]
Oct 28 09:45:35 mysqld: /usr/sbin/mysqld(my_hash_insert+0x331)[0x79fad1]
Oct 28 09:45:35 mysqld: /usr/sbin/mysqld(_ZN7handler25update_global_table_statsEv+0x285)[0x69a145]
Oct 28 09:45:35 mysqld: /usr/sbin/mysqld(_Z18close_thread_tableP3THDPP5TABLE+0xb9)[0x5581b9]
Oct 28 09:45:35 mysqld: /usr/sbin/mysqld(_Z19close_thread_tablesP3THD+0x18b)[0x55879b]
Oct 28 09:45:35 mysqld: /usr/sbin/mysqld(_Z18close_mysql_tablesP3THD+0x11)[0x558821]
Oct 28 09:45:35 mysqld: /usr/sbin/mysqld[0x59c51d]
Oct 28 09:45:35 mysqld: /usr/sbin/mysqld(_Z11plugin_initPiPPci+0x998)[0x59f658]
Oct 28 09:45:35 mysqld: /usr/sbin/mysqld[0x51b62b]
Oct 28 09:45:35 mysqld: /usr/sbin/mysqld(_Z11mysqld_mainiPPc+0x46d)[0x51f17d]
Oct 28 09:45:35 mysqld: /lib64/libc.so.6(__libc_start_main+0xf4)[0x321241d9c4]
Oct 28 09:45:35 mysqld: /usr/sbin/mysqld[0x514239]
Oct 28 09:45:35 mysqld:
Oct 28 09:45:35 mysqld: Trying to get some variables.
Oct 28 09:45:35 mysqld: Some pointers may be invalid and cause the dump to abort.
Oct 28 09:45:35 mysqld: Query (0): is an invalid pointer
Oct 28 09:45:35 mysqld: Connection ID (thread ID): 0
Oct 28 09:45:35 mysqld: Status: NOT_KILLED

my.cnf file as follows:

[mysqld]
federated
max_allowed_packet = 128M
table_cache = 10000
sort_buffer_size = 1M
read_buffer_size = 256k
read_rnd_buffer_size = 8M
myisam_sort_buffer_size = 512M
thread_cache_size = 8
query_cache_size = 256M
thread_concurrency = 4
local-infile=1
join_buffer_size=256k
skip-slave-start
long_query_time=1
tmp_table_size=32m
max_heap_table_size=32m
max_connections=1500
read-only
tmpdir=/tmp/mysql_tmp
skip-name-resolve
log-bin=/var/lib/mysql_logs/mysql-bin
binlog-format=MIXED
expire_logs_days=8
log-slave-updates=1
server-id = 17521
slave_skip_errors=1062
slave_compressed_protocol=1
innodb_buffer_pool_size = 2G
innodb_log_buffer_size = 4M
innodb_log_file_size = 256M
innodb_flush_log_at_trx_commit = 2
innodb_thread_concurrency = 12
innodb_flush_method = O_DIRECT
innodb_file_per_table = 1
innodb_stats_on_metadata=0
innodb_stats_method=nulls_unequal
innodb_stats_sample_pages=32
innodb_io_capacity=500
default-storage-engine=MyISAM
innodb_locks_unsafe_for_binlog=1
transaction-isolation = READ-COMMITTED
innodb_buffer_pool_instances=2
innodb_use_sys_stats_table=1
innodb_file_format=barracuda
userstat=1
slow_query_log=0
slow_query_log_file=slow.log
log_slow_slave_statements = 1
log_slow_verbosity=full
log_slow_admin_statements

[Laurynas Biveinis (laurynas-biveinis)]

This issue has already been reported as bug 1011047, please track it there. Thanks!