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mysqld got signal 11 ;

xliuxliu EntrantCurrent User Role Beginner
Hi,
I use Percona-Server-5.7.12-5-Linux.x86_64.ssl101


In mysql.err file ,It throws the following error

。。。。。。
09:05:03 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.
Attempting to collect some information that could help diagnose the problem.
As this is a crash and something is definitely wrong, the information
collection process might fail.
Please help us make Percona Server better by reporting any
bugs at http://bugs.percona.com/

key_buffer_size=33554432
read_buffer_size=1048576
max_used_connections=40
max_threads=501
thread_count=9
connection_count=7
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1063797 K bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x7f6a13016000
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 = 7f6d7b906ce0 thread_stack 0x30000
/usr/local/Percona-Server-5.7.12-5-Linux.x86_64.ssl101/bin/mysqld(my_print_stacktrace+0x2c)[0xec366c]
/usr/local/Percona-Server-5.7.12-5-Linux.x86_64.ssl101/bin/mysqld(handle_fatal_signal+0x461)[0x79cb41]
/lib64/libpthread.so.0[0x38c500f710]
/usr/local/Percona-Server-5.7.12-5-Linux.x86_64.ssl101/bin/mysqld[0xc90635]
/usr/local/Percona-Server-5.7.12-5-Linux.x86_64.ssl101/bin/mysqld(_ZN4JOIN14test_skip_sortEv+0x15d)[0xc913bd]
/usr/local/Percona-Server-5.7.12-5-Linux.x86_64.ssl101/bin/mysqld(_ZN4JOIN8optimizeEv+0x1b53)[0xc9e483]
/usr/local/Percona-Server-5.7.12-5-Linux.x86_64.ssl101/bin/mysqld(_ZN13st_select_lex8optimizeEP3THD+0x685)[0xce3965]
/usr/local/Percona-Server-5.7.12-5-Linux.x86_64.ssl101/bin/mysqld(_Z12handle_queryP3THDP3LEXP12Query_resultyy+0x155)[0xce3b45]
/usr/local/Percona-Server-5.7.12-5-Linux.x86_64.ssl101/bin/mysqld[0x75c26f]
/usr/local/Percona-Server-5.7.12-5-Linux.x86_64.ssl101/bin/mysqld(_Z21mysql_execute_commandP3THDb+0x46ae)[0xca715e]
/usr/local/Percona-Server-5.7.12-5-Linux.x86_64.ssl101/bin/mysqld(_Z11mysql_parseP3THDP12Parser_state+0x5b5)[0xcaa1b5]
/usr/local/Percona-Server-5.7.12-5-Linux.x86_64.ssl101/bin/mysqld(_Z16dispatch_commandP3THDPK8COM_DATA19enum_server_command+0x92f)[0xcaab5f]
/usr/local/Percona-Server-5.7.12-5-Linux.x86_64.ssl101/bin/mysqld(_Z10do_commandP3THD+0x1b7)[0xcac4f7]
/usr/local/Percona-Server-5.7.12-5-Linux.x86_64.ssl101/bin/mysqld(handle_connection+0x2a8)[0xd6d468]
/usr/local/Percona-Server-5.7.12-5-Linux.x86_64.ssl101/bin/mysqld(pfs_spawn_thread+0x1b4)[0xf39164]
/lib64/libpthread.so.0[0x38c50079d1]
/lib64/libc.so.6(clone+0x6d)[0x35636e8b6d]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (7f6a13367030): is an invalid pointer
Connection ID (thread ID): 83119
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.
2017-03-21T09:05:03.697135Z mysqld_safe Number of processes running now: 0
2017-03-21T09:05:03.698458Z mysqld_safe mysqld restarted
。。。。。。
Why ?
How to solve it ?
thanks!

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