My node is crashed

Hi everybody,

I don’t understand what’s happen since I upgrade percona xtrabackup to 2.1.3.
My node is crashed and I have this error in my log :

07:53:55 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 [url]System Dashboard - Percona JIRA

It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 4432877 K bytes of memory
Hope that’s ok; if not, decrease some variables in the equation.

Thread pointer: 0x7f9234000990
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 = 7f9244a8fdb8 thread_stack 0x40000

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): 3

You may download the Percona Server operations manual by visiting
[url][/url]. You may find information
in the manual which will help you identify the cause of the crash.
130528 09:53:56 mysqld_safe Number of processes running now: 0
130528 09:53:56 mysqld_safe WSREP: not restarting wsrep node automatically
130528 09:53:56 mysqld_safe mysqld from pid file /var/lib/mysql/ ended

Can you help me please,

Best regards