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MySQL 5.7 - mysql crashes frequently - not for a specific command
Posted by: Swaminatha Babu
Date: August 30, 2017 11:30PM

MySQL frequently crashes and is not for a specific command
Environment: AWS
Version: 5.7.16-log
errorlog info at the time of crash
12:11:19 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.

key_buffer_size=16777216
read_buffer_size=262144
max_used_connections=43
max_threads=66
thread_count=35
connection_count=35
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 51056 K bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x2b3d6ba9a000
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 = 2b3d46b90e80 thread_stack 0x40000
/rdsdbbin/mysql/bin/mysqld(my_print_stacktrace+0x2c)[0xeb948c]
/rdsdbbin/mysql/bin/mysqld(handle_fatal_signal+0x451)[0x7adee1]
/lib64/libpthread.so.0(+0xf5b0)[0x2b3d3a43a5b0]
/rdsdbbin/mysql/bin/mysqld(_ZN12Item_func_in7cleanupEv+0x1f)[0x836a5f]
/rdsdbbin/mysql/bin/mysqld(_Z13cleanup_itemsP4Item+0x21)[0xc924e1]
/rdsdbbin/mysql/bin/mysqld(_ZN5TABLE16cleanup_gc_itemsEv+0x34)[0xd33d54]
/rdsdbbin/mysql/bin/mysqld(_Z19close_thread_tablesP3THD+0x5f)[0xc3e40f]
/rdsdbbin/mysql/bin/mysqld(_Z21mysql_execute_commandP3THDb+0x497)[0xc95127]
/rdsdbbin/mysql/bin/mysqld(_Z11mysql_parseP3THDP12Parser_state+0x3bd)[0xc9b88d]
/rdsdbbin/mysql/bin/mysqld(_Z16dispatch_commandP3THDPK8COM_DATA19enum_server_command+0x8e8)[0xc9c1e8]
/rdsdbbin/mysql/bin/mysqld(_Z10do_commandP3THD+0x177)[0xc9db07]
/rdsdbbin/mysql/bin/mysqld(handle_connection+0x270)[0xd57b70]
/rdsdbbin/mysql/bin/mysqld(pfs_spawn_thread+0x18f)[0x121f47f]
/lib64/libpthread.so.0(+0x7f18)[0x2b3d3a432f18]
/lib64/libc.so.6(clone+0x6d)[0x2b3d3b784b2d]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (2b3d6baac030): select * from `propertydatabase`.`fields` limit 0, 1000
Connection ID (thread ID): 244
Status: NOT_KILLED
the command executed is a simple select statement 'select * from `propertydatabase`.`fields` limit 0, 1000'
similar creash was seen even while executing commands like select function or call stored procedure.
issue does not seems to be specific to a particular command

looks to me a bug

please let me know what could be the issue and whether any bug-fox is available

thanks in advance for any pointers.

regards
Babu

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MySQL 5.7 - mysql crashes frequently - not for a specific command
August 30, 2017 11:30PM


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