130827 22:00:29 [Note] Plugin 'FEDERATED' is disabled.
130827 22:00:29 InnoDB: !!!!!!!! UNIV_DEBUG switched on !!!!!!!!!
130827 22:00:29 InnoDB: The InnoDB memory heap is disabled
130827 22:00:29 InnoDB: Mutexes and rw_locks use GCC atomic builtins
130827 22:00:29 InnoDB: Compressed tables use zlib 1.2.3
130827 22:00:29 InnoDB: Using Linux native AIO
130827 22:00:29 InnoDB: Initializing buffer pool, size = 128.0M
130827 22:00:29 InnoDB: Completed initialization of buffer pool
130827 22:00:29 InnoDB: highest supported file format is Barracuda.
130827 22:00:29  InnoDB: Waiting for the background threads to start
130827 22:00:30 Percona XtraDB (http://www.percona.com) 5.5.33-rel31.0 started; log sequence number 1597945
130827 22:00:30 [Warning] /ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld: unknown option '--loose-debug-assert-if-crashed-table'
130827 22:00:30 [Warning] /ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld: unknown option '--loose-debug-assert-on-error'
130827 22:00:30 [Warning] 'user' entry 'root@qaserver.home' ignored in --skip-name-resolve mode.
130827 22:00:30 [Warning] 'user' entry '@qaserver.home' ignored in --skip-name-resolve mode.
130827 22:00:30 [Warning] 'proxies_priv' entry '@ root@qaserver.home' ignored in --skip-name-resolve mode.
130827 22:00:30 [Note] Event Scheduler: Loaded 0 events
130827 22:00:30 [Note] /ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld: ready for connections.
Version: '5.5.33-rel31.0-debug'  socket: '/dev/shm/1377604819/subreducer/2/socket.sock'  port: 41989  Percona Server with XtraDB (GPL), Release rel31.0, Revision 564-debug-valgrind
130827 22:00:30 [Note] Event Scheduler: scheduler thread started with id 1
130827 22:00:32 [Note] /ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld: Normal shutdown

130827 22:00:32 [Note] Event Scheduler: Killing the scheduler thread, thread id 1
130827 22:00:32 [Note] Event Scheduler: Waiting for the scheduler thread to reply
130827 22:00:32 [Note] Event Scheduler: Stopped
130827 22:00:32 [Note] Event Scheduler: Purging the queue. 1 events
130827 22:00:32  InnoDB: Starting shutdown...
130827 22:00:34  InnoDB: Shutdown completed; log sequence number 1597971
130827 22:00:34 [Note] /ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld: Shutdown complete

130827 22:00:37 [Note] Plugin 'FEDERATED' is disabled.
130827 22:00:37 InnoDB: !!!!!!!! UNIV_DEBUG switched on !!!!!!!!!
130827 22:00:37 InnoDB: The InnoDB memory heap is disabled
130827 22:00:37 InnoDB: Mutexes and rw_locks use GCC atomic builtins
130827 22:00:37 InnoDB: Compressed tables use zlib 1.2.3
130827 22:00:37 InnoDB: Using Linux native AIO
130827 22:00:37 InnoDB: Initializing buffer pool, size = 128.0M
130827 22:00:37 InnoDB: Completed initialization of buffer pool
130827 22:00:37 InnoDB: highest supported file format is Barracuda.
130827 22:00:37  InnoDB: Waiting for the background threads to start
130827 22:00:38 Percona XtraDB (http://www.percona.com) 5.5.33-rel31.0 started; log sequence number 1597945
130827 22:00:38 [Warning] /ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld: unknown option '--loose-debug-assert-if-crashed-table'
130827 22:00:38 [Warning] /ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld: unknown option '--loose-debug-assert-on-error'
130827 22:00:38 [Warning] 'user' entry 'root@qaserver.home' ignored in --skip-name-resolve mode.
130827 22:00:38 [Warning] 'user' entry '@qaserver.home' ignored in --skip-name-resolve mode.
130827 22:00:38 [Warning] 'proxies_priv' entry '@ root@qaserver.home' ignored in --skip-name-resolve mode.
130827 22:00:38 [Note] Event Scheduler: Loaded 0 events
130827 22:00:38 [Note] /ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld: ready for connections.
Version: '5.5.33-rel31.0-debug'  socket: '/dev/shm/1377604819/subreducer/2/socket.sock'  port: 41989  Percona Server with XtraDB (GPL), Release rel31.0, Revision 564-debug-valgrind
130827 22:00:38 [Note] Event Scheduler: scheduler thread started with id 1
130827 22:00:40 [Note] /ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld: Normal shutdown

130827 22:00:40 [Note] Event Scheduler: Killing the scheduler thread, thread id 1
130827 22:00:40 [Note] Event Scheduler: Waiting for the scheduler thread to reply
130827 22:00:40 [Note] Event Scheduler: Stopped
130827 22:00:40 [Note] Event Scheduler: Purging the queue. 1 events
130827 22:00:40  InnoDB: Starting shutdown...
130827 22:00:42  InnoDB: Shutdown completed; log sequence number 1597971
130827 22:00:42 [Note] /ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld: Shutdown complete

130827 22:00:45 [Note] Plugin 'FEDERATED' is disabled.
130827 22:00:45 InnoDB: !!!!!!!! UNIV_DEBUG switched on !!!!!!!!!
130827 22:00:45 InnoDB: The InnoDB memory heap is disabled
130827 22:00:45 InnoDB: Mutexes and rw_locks use GCC atomic builtins
130827 22:00:45 InnoDB: Compressed tables use zlib 1.2.3
130827 22:00:45 InnoDB: Using Linux native AIO
130827 22:00:45 InnoDB: Initializing buffer pool, size = 128.0M
130827 22:00:45 InnoDB: Completed initialization of buffer pool
130827 22:00:45 InnoDB: highest supported file format is Barracuda.
130827 22:00:45  InnoDB: Waiting for the background threads to start
130827 22:00:46 Percona XtraDB (http://www.percona.com) 5.5.33-rel31.0 started; log sequence number 1597945
130827 22:00:46 [Warning] /ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld: unknown option '--loose-debug-assert-if-crashed-table'
130827 22:00:46 [Warning] /ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld: unknown option '--loose-debug-assert-on-error'
130827 22:00:46 [Warning] 'user' entry 'root@qaserver.home' ignored in --skip-name-resolve mode.
130827 22:00:46 [Warning] 'user' entry '@qaserver.home' ignored in --skip-name-resolve mode.
130827 22:00:46 [Warning] 'proxies_priv' entry '@ root@qaserver.home' ignored in --skip-name-resolve mode.
130827 22:00:46 [Note] Event Scheduler: Loaded 0 events
130827 22:00:46 [Note] /ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld: ready for connections.
Version: '5.5.33-rel31.0-debug'  socket: '/dev/shm/1377604819/subreducer/2/socket.sock'  port: 41989  Percona Server with XtraDB (GPL), Release rel31.0, Revision 564-debug-valgrind
130827 22:00:46 [Note] Event Scheduler: scheduler thread started with id 1
130827 22:00:48 [Note] /ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld: Normal shutdown

130827 22:00:48 [Note] Event Scheduler: Killing the scheduler thread, thread id 1
130827 22:00:48 [Note] Event Scheduler: Waiting for the scheduler thread to reply
130827 22:00:48 [Note] Event Scheduler: Stopped
130827 22:00:48 [Note] Event Scheduler: Purging the queue. 1 events
130827 22:00:48  InnoDB: Starting shutdown...
130827 22:00:50  InnoDB: Shutdown completed; log sequence number 1597971
130827 22:00:50 [Note] /ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld: Shutdown complete

130827 22:00:53 [Note] Plugin 'FEDERATED' is disabled.
130827 22:00:53 InnoDB: !!!!!!!! UNIV_DEBUG switched on !!!!!!!!!
130827 22:00:53 InnoDB: The InnoDB memory heap is disabled
130827 22:00:53 InnoDB: Mutexes and rw_locks use GCC atomic builtins
130827 22:00:53 InnoDB: Compressed tables use zlib 1.2.3
130827 22:00:53 InnoDB: Using Linux native AIO
130827 22:00:53 InnoDB: Initializing buffer pool, size = 128.0M
130827 22:00:53 InnoDB: Completed initialization of buffer pool
130827 22:00:53 InnoDB: highest supported file format is Barracuda.
130827 22:00:53  InnoDB: Waiting for the background threads to start
130827 22:00:54 Percona XtraDB (http://www.percona.com) 5.5.33-rel31.0 started; log sequence number 1597945
130827 22:00:54 [Warning] /ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld: unknown option '--loose-debug-assert-if-crashed-table'
130827 22:00:54 [Warning] /ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld: unknown option '--loose-debug-assert-on-error'
130827 22:00:54 [Warning] 'user' entry 'root@qaserver.home' ignored in --skip-name-resolve mode.
130827 22:00:54 [Warning] 'user' entry '@qaserver.home' ignored in --skip-name-resolve mode.
130827 22:00:54 [Warning] 'proxies_priv' entry '@ root@qaserver.home' ignored in --skip-name-resolve mode.
130827 22:00:54 [Note] Event Scheduler: Loaded 0 events
130827 22:00:54 [Note] /ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld: ready for connections.
Version: '5.5.33-rel31.0-debug'  socket: '/dev/shm/1377604819/subreducer/2/socket.sock'  port: 41989  Percona Server with XtraDB (GPL), Release rel31.0, Revision 564-debug-valgrind
130827 22:00:54 [Note] Event Scheduler: scheduler thread started with id 1
mysqld: /bzr/5.5_val/Percona-Server-5.5.32-rel31.0/sql/sql_error.cc:422: void Diagnostics_area::set_error_status(THD*, uint, const char*, const char*): Assertion `! is_set() || can_overwrite_status' failed.
12:00:55 UTC - mysqld got signal 6 ;
This could be because you hit a bug. It is also possible that this binary
or one of the libraries it was linked against is corrupt, improperly built,
or misconfigured. This error can also be caused by malfunctioning hardware.
We will try our best to scrape up some info that will hopefully help
diagnose the problem, but since we have already crashed, 
something is definitely wrong and this may fail.
Please help us make Percona Server better by reporting any
bugs at http://bugs.percona.com/

key_buffer_size=8388608
read_buffer_size=131072
max_used_connections=1
max_threads=153
thread_count=2
connection_count=1
It is possible that mysqld could use up to 
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 342996 K  bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x325fb00
Attempting backtrace. You can use the following information to find out
where mysqld died. If you see no messages after this, something went
terribly wrong...
stack_bottom = 7fa62c18bda8 thread_stack 0x40000
/ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld(my_print_stacktrace+0x35)[0x808e55]
/ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld(handle_fatal_signal+0x314)[0x6bd708]
/lib64/libpthread.so.0[0x340cc0f500]
/lib64/libc.so.6(gsignal+0x35)[0x340c4328a5]
/lib64/libc.so.6(abort+0x175)[0x340c434085]
/lib64/libc.so.6[0x340c42ba1e]
/lib64/libc.so.6(__assert_perror_fail+0x0)[0x340c42bae0]
/ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld(_ZN16Diagnostics_area16set_error_statusEP3THDjPKcS3_+0x6e)[0x587590]
/ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld(_ZN3THD15raise_conditionEjPKcN11MYSQL_ERROR18enum_warning_levelES1_+0x222)[0x578314]
/ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld(my_message_sql+0x117)[0x519d6c]
/ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld(my_error+0x17d)[0x7ff72c]
/ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld(my_delete+0xa9)[0x7ff0d5]
/ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld(my_delete_with_symlink+0x77)[0x8060ae]
/ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld(mi_delete_table+0x1c6)[0x9fb022]
/ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld(_ZN9ha_myisam12delete_tableEPKc+0xc)[0x9e41b0]
/ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld(_ZN7handler10drop_tableEPKc+0x2e)[0x6bddc2]
/ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld(_ZN7handler13ha_drop_tableEPKc+0x7e)[0x6c6ae8]
/ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld(_Z14free_tmp_tableP3THDP5TABLE+0x12c)[0x5c735e]
/ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld(_Z19close_thread_tablesP3THD+0x15b)[0x561375]
/ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld(_Z21mysql_execute_commandP3THD+0x5166)[0x5a7459]
/ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_state+0x225)[0x5a7b70]
/ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0x82f)[0x5a8ee2]
/ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld(_Z10do_commandP3THD+0x284)[0x5aa5c3]
/ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld(_Z24do_handle_one_connectionP3THD+0x121)[0x65482f]
/ssd/Percona-Server-5.5.32-rel31.0-564-debug-valgrind.Linux.x86_64/bin/mysqld(handle_one_connection+0x52)[0x65492e]
/lib64/libpthread.so.0[0x340cc07851]
/lib64/libc.so.6(clone+0x6d)[0x340c4e890d]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (7fa608004d80): SELECT CASE WHEN table_schema = 'information_schema' THEN 'INFORMATION_SCHEMA' ELSE table_schema END, table_name, CASE WHEN table_type = 'BASE TABLE' THEN''WHEN table_type = 'VIEW' THEN''WHEN table_type = 'SYSTEM VIEW' then''ELSE''END, column_name, CASE WHEN column_key = 'PRI' THEN''WHEN column_key = 'MUL' THEN''WHEN column_key = 'UNI' THEN''ELSE''END FROM information_schema.tables INNER JOIN information_schema.columns USING(table_schema, table_name) WHERE table_name <> 'DUMMY'
Connection ID (thread ID): 6
Status: NOT_KILLED

You may download the Percona Server operations manual by visiting
http://www.percona.com/software/percona-server/. You may find information
in the manual which will help you identify the cause of the crash.
Writing a core file