150204 20:47:37  InnoDB: Assertion failure in thread 1489222512 in file sync0rw.c line 569
InnoDB: Failing assertion: !lock->recursive
InnoDB: We intentionally generate a memory trap.
InnoDB: Submit a detailed bug report to http://bugs.mysql.com.
InnoDB: If you get repeated assertion failures or crashes, even
InnoDB: immediately after the mysqld startup, there may be
InnoDB: corruption in the InnoDB tablespace. Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.5/en/forcing-innodb-recovery.html
InnoDB: about forcing recovery.
20:47:37 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=134217728
read_buffer_size=8388608
max_used_connections=37
max_threads=302
thread_count=1
connection_count=1
It is possible that mysqld could use up to 
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 3844437 K  bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x5494c4d8
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 = 58c3b35c thread_stack 0x30000
/usr/sbin/mysqld(my_print_stacktrace+0x33)[0x83cb963]
/usr/sbin/mysqld(handle_fatal_signal+0x442)[0x82b0a22]
[0xf77b0b40]
/lib/i686/cmov/libc.so.6(abort+0x182)[0xf73368e2]
/usr/sbin/mysqld[0x843ba41]
/usr/sbin/mysqld[0x847ea59]
/usr/sbin/mysqld[0x845da13]
/usr/sbin/mysqld[0x845db6c]
/usr/sbin/mysqld[0x845f7bd]
/usr/sbin/mysqld[0x8469293]
/usr/sbin/mysqld[0x842997d]
/usr/sbin/mysqld[0x842cca4]
/usr/sbin/mysqld[0x842d563]
/usr/sbin/mysqld[0x841a1cd]
/usr/sbin/mysqld[0x83fdedc]
/usr/sbin/mysqld(_ZN7handler13ha_update_rowEPKhPh+0x65)[0x82b5eb5]
/usr/sbin/mysqld(_Z12mysql_updateP3THDP10TABLE_LISTR4ListI4ItemES6_PS4_jP8st_ordery15enum_duplicatesbPySB_+0x1924)[0x8223c94]
/usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x1ab1)[0x81b3d21]
/usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_state+0x34d)[0x81b7b4d]
/usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0x1d22)[0x81ba102]
/usr/sbin/mysqld(_Z10do_commandP3THD+0x115)[0x81ba845]
/usr/sbin/mysqld(_Z24do_handle_one_connectionP3THD+0xdb)[0x825186b]
/usr/sbin/mysqld(handle_one_connection+0x3c)[0x82519dc]
/lib/i686/cmov/libpthread.so.0(+0x5955)[0xf7792955]
/lib/i686/cmov/libc.so.6(clone+0x5e)[0xf73d4e8e]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (4f8fa018): is an invalid pointer
Connection ID (thread ID): 16015
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.
150204 20:47:38 mysqld_safe Number of processes running now: 0
150204 20:47:38 mysqld_safe mysqld restarted
150204 20:47:38 [ERROR] An old style --language value with language specific part detected: /usr/share/mysql/english/
150204 20:47:38 [ERROR] Use --lc-messages-dir without language specific part instead.
150204 20:47:38 [Warning] Using unique option prefix myisam_recover instead of myisam-recover-options is deprecated and will be removed in a future release. Please use the full name instead.
150204 20:47:38 [Note] Plugin 'FEDERATED' is disabled.
150204 20:47:38 InnoDB: The InnoDB memory heap is disabled
150204 20:47:38 InnoDB: Mutexes and rw_locks use GCC atomic builtins
150204 20:47:38 InnoDB: Compressed tables use zlib 1.2.3.4
150204 20:47:38 InnoDB: Using Linux native AIO
150204 20:47:38 InnoDB: Initializing buffer pool, size = 2.0G
150204 20:47:39 InnoDB: Completed initialization of buffer pool
150204 20:47:39 InnoDB: highest supported file format is Barracuda.
InnoDB: Log scan progressed past the checkpoint lsn 673933014446
150204 20:47:39  InnoDB: Database was not shut down normally!
InnoDB: Starting crash recovery.
InnoDB: Reading tablespace information from the .ibd files...
InnoDB: Restoring possible half-written data pages from the doublewrite
InnoDB: buffer...
InnoDB: Doing recovery: scanned up to log sequence number 673938256896
InnoDB: Doing recovery: scanned up to log sequence number 673943499776
InnoDB: Doing recovery: scanned up to log sequence number 673948691486
InnoDB: 1 transaction(s) which must be rolled back or cleaned up
InnoDB: in total 1 row operations to undo
InnoDB: Trx id counter is 96DFBE00
150204 20:48:18  InnoDB: Starting an apply batch of log records to the database...
InnoDB: Progress in percents: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 
InnoDB: Apply batch completed
InnoDB: Last MySQL binlog file position 0 81801314, file name /var/log/mysql/mysql-bin.013417
InnoDB: Starting in background the rollback of uncommitted transactions
150204 20:48:19  InnoDB: Rolling back trx with id 96DFBC08, 1 rows to undo
150204 20:48:19  InnoDB: Waiting for the background threads to start

InnoDB: Rolling back of trx id 96DFBC08 completed
150204 20:48:19  InnoDB: Rollback of non-prepared transactions completed
150204 20:48:20 Percona XtraDB (http://www.percona.com) 5.5.41-37.0 started; log sequence number 673948691486
150204 20:48:20 [Note] Recovering after a crash using /var/log/mysql/mysql-bin
150204 20:48:20 [Note] Starting crash recovery...
150204 20:48:20 [Note] Crash recovery finished.
150204 20:48:22 [Warning] 'user' entry 'root@server1.example.com' ignored in --skip-name-resolve mode.
150204 20:48:22 [Warning] 'proxies_priv' entry '@ root@server1.example.com' ignored in --skip-name-resolve mode.
150204 20:48:22 [Note] Event Scheduler: Loaded 0 events
150204 20:48:22 [Note] /usr/sbin/mysqld: ready for connections.
Version: '5.5.41-37.0-log'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  Percona Server (GPL), Release 37.0, Revision 727