userstat = 1 in my.cnf causes signal 11 on start

[Joshua Prunier]

Using Percona Server 5.5.29-29.4-log setting userstat = 0 in the my.cnf or set global userstat = 1 once mysqld has started works just fine. Otherwise userstat = 1 in my.cnf causes the following error when XtraDB is initalized during server start:

[root@elektra mysql]# service mysql start
Starting MySQL (Percona Server).. ERROR! The server quit without updating PID file (/var/lib/mysql/elektra.netprospex.com.pid).
[root@elektra mysql]# cat *.err
130214 15:29:01 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
130214 15:29:01 [Warning] You need to use --log-bin to make --binlog-format work.
130214 15:29:02 [Note] Plugin 'FEDERATED' is disabled.
20:29:02 UTC - mysqld got signal 11 ;
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=5368709120
read_buffer_size=2097152
max_used_connections=0
max_threads=300
thread_count=0
connection_count=0
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 36580957 K bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x7fffec731450
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 = 7fffec734560 thread_stack 0x80000
/usr/sbin/mysqld(my_print_stacktrace+0x35)[0x7ac7e5]
/usr/sbin/mysqld(handle_fatal_signal+0x4a4)[0x688084]
/lib64/libpthread.so.0[0x314940f500]
/usr/sbin/mysqld(my_hash_insert+0x331)[0x794331]
/usr/sbin/mysqld(_ZN7handler25update_global_table_statsEv+0x2c5)[0x68f905]
/usr/sbin/mysqld(_Z18close_thread_tableP3THDPP5TABLE+0xad)[0x55365d]
/usr/sbin/mysqld(_Z19close_thread_tablesP3THD+0x18b)[0x553c4b]
/usr/sbin/mysqld(_Z18close_mysql_tablesP3THD+0x11)[0x553cd1]
/usr/sbin/mysqld[0x59653d]
/usr/sbin/mysqld(_Z11plugin_initPiPPci+0x997)[0x599667]
/usr/sbin/mysqld[0x518cbb]
/usr/sbin/mysqld(_Z11mysqld_mainiPPc+0x46d)[0x51c68d]
/lib64/libc.so.6(__libc_start_main+0xfd)[0x314901ecdd]
/usr/sbin/mysqld[0x511fb9]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (0): is an invalid pointer
Connection ID (thread ID): 0
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.
130214 15:29:02 mysqld_safe mysqld from pid file /var/lib/mysql/elektra.netprospex.com.pid ended

The server was populated with a raw file copy from another server running MySQL 5.5.20. A pt-summary report is supplied below.

[root@elektra bin]# ./pt-summary
# Percona Toolkit System Summary Report ######################
        Date | 2013-02-14 20:33:35 UTC (local TZ: EST -0500)
    Hostname | elektra.netprospex.com
      Uptime | 8 days, 13:38, 1 user, load average: 0.00, 0.00, 0.07
      System | Supermicro; X9DRi-LN4+/X9DR3-LN4+; v0123456789 (Desktop)
 Service Tag | 0123456789
    Platform | Linux
     Release | Red Hat Enterprise Linux Server release 6.3 (Santiago)
      Kernel | 2.6.32-279.19.1.el6.x86_64
Architecture | CPU = 64-bit, OS = 64-bit
   Threading | NPTL 2.12
    Compiler | GNU CC version 4.4.6 20120305 (Red Hat 4.4.6-4).
     SELinux | Disabled
 Virtualized | No virtualization detected
# Processor ##################################################
  Processors | physical = 2, cores = 12, virtual = 24, hyperthreading = yes
      Speeds | 24x1200.000
      Models | 24xIntel(R) Xeon(R) CPU E5-2630 0 @ 2.30GHz
      Caches | 24x15360 KB
# Memory #####################################################
       Total | 94.4G
        Free | 92.1G
        Used | physical = 2.3G, swap allocated = 16.0G, swap used = 11.9M, virtual = 2.3G
     Buffers | 95.3M
      Caches | 925.8M
       Dirty | 1652 kB
     UsedRSS | 166.8M
  Swappiness | 60
 DirtyPolicy | 20, 10
 DirtyStatus | 0, 0
  Locator Size Speed Form Factor Type Type Detail
  ========= ======== ================= ============= ============= ===========
            1333 MHz
            1333 MHz
            1333 MHz
            1333 MHz
            1333 MHz
            1333 MHz
            1333 MHz
            1333 MHz
            1333 MHz
            1333 MHz
            1333 MHz
            1333 MHz
            16 MB 33 MHz Other Flash Non-Volatile
  P1-DIMMA1 8192 MB 1333 MHz DIMM DDR3 Registered (Buffered)
  P1-DIMMA2 8192 MB 1333 MHz DIMM DDR3 Registered (Buffered)
  P1-DIMMB1 8192 MB 1333 MHz DIMM DDR3 Registered (Buffered)
  P1-DIMMC1 8192 MB 1333 MHz DIMM DDR3 Registered (Buffered)
  P1-DIMMC2 8192 MB 1333 MHz DIMM DDR3 Registered (Buffered)
  P1-DIMMD1 8192 MB 1333 MHz DIMM DDR3 Registered (Buffered)
  P2-DIMME1 8192 MB 1333 MHz DIMM DDR3 Registered (Buffered)
  P2-DIMME2 8192 MB 1333 MHz DIMM DDR3 Registered (Buffered)
  P2-DIMMF1 8192 MB 1333 MHz DIMM DDR3 Registered (Buffered)
  P2-DIMMG1 8192 MB 1333 MHz DIMM DDR3 Registered (Buffered)
  P2-DIMMG2 8192 MB 1333 MHz DIMM DDR3 Registered (Buffered)
  P2-DIMMH1 8192 MB 1333 MHz DIMM DDR3 Registered (Buffered)
  P1-DIMMA3 {EMPTY} Unknown DIMM Unknown Synchronous
  P1-DIMMB2 {EMPTY} Unknown DIMM Unknown Synchronous
  P1-DIMMB3 {EMPTY} Unknown DIMM Unknown Synchronous
  P1-DIMMC3 {EMPTY} Unknown DIMM Unknown Synchronous
  P1-DIMMD2 {EMPTY} Unknown DIMM Unknown Synchronous
  P1-DIMMD3 {EMPTY} Unknown DIMM Unknown Synchronous
  P2-DIMME3 {EMPTY} Unknown DIMM Unknown Synchronous
  P2-DIMMF2 {EMPTY} Unknown DIMM Unknown Synchronous
  P2-DIMMF3 {EMPTY} Unknown DIMM Unknown Synchronous
  P2-DIMMG3 {EMPTY} Unknown DIMM Unknown Synchronous
  P2-DIMMH2 {EMPTY} Unknown DIMM Unknown Synchronous
  P2-DIMMH3 {EMPTY} Unknown DIMM Unknown Synchronous
            Unknown
            Unknown
            Unknown
            Unknown
            Unknown
            Unknown
            Unknown
            Unknown
            Unknown
            Unknown
            Unknown
            Unknown
            Unknown
# Mounted Filesystems ########################################
  Filesystem Size Used Type Opts Mountpoint
  /dev/mapper/VolGroup-lv_root 1.1T 46% ext4 rw /
  /dev/sda1 243M 26% ext4 rw /boot
  tmpfs 25G 0% tmpfs rw /tmp/ramdisk
  tmpfs 25G 0% tmpfs rw,size=25G /tmp/ramdisk
  tmpfs 48G 0% tmpfs rw /dev/shm
  tmpfs 48G 0% tmpfs rw,size=25G /dev/shm
  userdirs0.netprospex.local:/srv/nfs_exports/homes 7.1T 20% nfs rw,sync,bg,intr,hard /users
# Disk Schedulers And Queue Size #############################
        dm-0 | 128
        dm-1 | 128
         sda | [cfq] 128
# Disk Partioning ############################################
Device Type Start End Size
============ ==== ========== ========== ==================
/dev/dm-0 Disk 1179438284800
/dev/dm-1 Disk 17179869184
/dev/sda Disk 1196886589440
/dev/sda1 Part 1 145514 1196885168640
# Kernel Inode State #########################################
dentry-state | 57822 51357 45 0 0 0
     file-nr | 1152 0 9782725
    inode-nr | 46655 1532
# LVM Volumes ################################################
  LV VG Attr LSize Pool Origin Data% Move Log Copy% Convert
  lv_root VolGroup -wi-ao-- 1.07t
  lv_swap VolGroup -wi-ao-- 16.00g
# LVM Volume Groups ##########################################
  VG VSize VFree
  VolGroup 1.09t 0
# RAID Controller ############################################
  Controller | LSI Logic MegaRAID SAS
       Model | LSI MegaRAID SAS 9260-8i, PCIE interface, 8 ports
       Cache | 512MB Memory, BBU
         BBU | 95% Charged, Temperature 24C, isSOHGood=

  VirtualDev Size RAID Level Disks SpnDpth Stripe Status Cache
  ========== ========= ========== ===== ======= ====== ======= =========
  0(no name) 1.087 TB 0 (:-0-0) 6 Depth-1 64 KB Optimal WB, RA

  PhysiclDev Type State Errors Vendor Model Size
  ========== ==== ======= ====== ======= ============ ===========
  Solid Stat SATA Online, 0/0/0 50026B722701203C KINGSTON 186.310
  Solid Stat SATA Online, 0/0/0 50026B7227011F23 KINGSTON 186.310
  Solid Stat SATA Online, 0/0/0 50026B7227011FF2 KINGSTON 186.310
  Solid Stat SATA Online, 0/0/0 50026B7227011F15 KINGSTON 186.310
  Solid Stat SATA Online, 0/0/0 50026B7227012060 KINGSTON 186.310
  Solid Stat SATA Online, 0/0/0 50026B7227011F64 KINGSTON 186.310
# Network Config #############################################
  Controller | Intel Corporation I350 Gigabit Network Connection (rev 01)
  Controller | Intel Corporation I350 Gigabit Network Connection (rev 01)
  Controller | Intel Corporation I350 Gigabit Network Connection (rev 01)
  Controller | Intel Corporation I350 Gigabit Network Connection (rev 01)
 FIN Timeout | 60
  Port Range | 61000
# Interface Statistics #######################################
  interface rx_bytes rx_packets rx_errors tx_bytes tx_packets tx_errors
  ========= ========= ========== ========== ========== ========== ==========
  lo 900000 9000 0 900000 9000 0
  eth0 450000000 2250000 0 15000000 90000 150
  eth1 800000000 400000000 0 3500000000 50000000 0
  eth2 0 0 0 0 0 0
  eth3 0 0 0 0 0 0
# Network Devices ############################################
  Device Speed Duplex
  ========= ========= =========
  eth0 100Mb/s Half
  eth1 1000Mb/s Full
  eth2 Unknown! Unknown!
  eth3 Unknown! Unknown!
# Network Connections ########################################
  Connections from remote IP addresses
    192.168.1.11 2
    192.168.1.98 7
    192.168.10.194 1
  Connections to local IP addresses
    192.168.1.103 9
    209.35.50.103 1
  Connections to top 10 local ports
    22 1
    33769 1
    33786 1
    59343 1
    59606 1
    59607 1
    59608 1
    59609 1
    59610 1
    804 1
  States of connections
    ESTABLISHED 8
    LISTEN 25
    TIME_WAIT 2
# Top Processes ##############################################
  PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
21138 root 20 0 17384 1460 848 R 3.9 0.0 0:00.02 top
 2480 root 20 0 9144 708 456 S 1.9 0.0 5:15.23 irqbalance
    1 root 20 0 19352 1544 1244 S 0.0 0.0 0:01.74 init
    2 root 20 0 0 0 0 S 0.0 0.0 0:00.01 kthreadd
    3 root RT 0 0 0 0 S 0.0 0.0 0:00.34 migration/0
    4 root 20 0 0 0 0 S 0.0 0.0 0:11.18 ksoftirqd/0
    5 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/0
    6 root RT 0 0 0 0 S 0.0 0.0 0:00.71 watchdog/0
    7 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/1
# Notable Processes ##########################################
  PID OOM COMMAND
 2655 -17 sshd
# Simplified and fuzzy rounded vmstat (wait please) ##########
  procs ---swap-- -----io---- ---system---- --------cpu--------
   r b si so bi bo ir cs us sy il wa st
   1 0 0 0 25 35 2 1 0 0 100 0 0
   1 0 0 0 45 0 3500 2500 1 1 98 0 0
   0 0 0 0 0 0 30 45 0 0 100 0 0
   0 0 0 0 0 4 80 100 0 0 100 0 0
   1 0 0 0 0 0 50 60 0 0 100 0 0
# The End ####################################################