ahiguti/HandlerSocket-Plugin-for-MySQL — Issue #66: HandlerSocket Make MySQLD got signal 11
Author: wubx
Created: 2011-10-31 03:57:15+00:00
State: open

HandlerSocket Make MySQLD got signal 11
Version: Percona-Server-5.1.58-12.9
mysql error log :
- 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.

key_buffer_size=67108864
read_buffer_size=524288
max_used_connections=20
max_threads=1100
threads_connected=37
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1203924 K
bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x2ab42e157b60
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 = 0x540470e0 thread_stack 0x30000
/usr/local/mysql/libexec/mysqld(my_print_stacktrace+0x24) [0x842d64]
/usr/local/mysql/libexec/mysqld(handle_segfault+0x351) [0x58ad61]
/lib64/libpthread.so.0 [0x331500eb10]
/usr/local/mysql/lib/mysql/plugin/handlersocket.so(dena::hstcpsvr_worker::do_exec_on_index(char*, char*, char*, char*, dena::hstcpsvr_conn&)+0x194) [0x2aaaaede0824]
/usr/local/mysql/lib/mysql/plugin/handlersocket.so(dena::hstcpsvr_worker::execute_lines(dena::hstcpsvr_conn&)+0x56) [0x2aaaaede0ff6]
/usr/local/mysql/lib/mysql/plugin/handlersocket.so(dena::hstcpsvr_worker::run_one_ep()+0x524) [0x2aaaaede1b34]
/usr/local/mysql/lib/mysql/plugin/handlersocket.so(dena::hstcpsvr_worker::run()+0x9d) [0x2aaaaede279d]
/usr/local/mysql/lib/mysql/plugin/handlersocket.so(dena::thread::thread_main(void*)+0xd) [0x2aaaaede6fcd]
/lib64/libpthread.so.0 [0x331500673d]
/lib64/libc.so.6(clone+0x6d) [0x33144d3d1d]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query ((nil)): is an invalid pointer
Connection ID (thread ID): 17
Status: NOT_KILLED

how to repeat?
don't know.

BTW:
May be epoll lost some fd.