[debian-mysql] Bug#600887: MySQL Server Crash

[Matt]

Package: mysql-server
Version: 5.1.49-1

MySQL is crashing about once per day.

101020 18:00:25 - 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=1048576
read_buffer_size=262144
max_used_connections=6
max_threads=151
threads_connected=5
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 50314 K
bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

thd: 0x41120590
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 = 0x410ca36c thread_stack 0x20000
/usr/sbin/mysqld(my_print_stacktrace+0x2d) [0x2b0561ad]
/usr/sbin/mysqld(handle_segfault+0x494) [0x2ad1d8c4]
/lib/libpthread.so.0(+0xde68) [0x40036e68]
/usr/sbin/mysqld(JOIN::optimize()+0x59b) [0x2ad9fddb]
/usr/sbin/mysqld(mysql_select(THD*, Item***, TABLE_LIST*, unsigned
int, List&, Item*, unsigned int, st_order*, st_order*, Item*,
st_order*, unsigned long long, select_result*, st_select_lex_unit*,
st_select_lex*)+0x79) [0x2ada3539]
/usr/sbin/mysqld(handle_select(THD*, st_lex*, select_result*, unsigned
long)+0x164) [0x2ada9744]
/usr/sbin/mysqld(mysql_execute_command(THD*)+0x75eb) [0x2ad37b0b]
/usr/sbin/mysqld(mysql_parse(THD*, char const*, unsigned int, char
const**)+0x42a) [0x2ad38b0a]
/usr/sbin/mysqld(dispatch_command(enum_server_command, THD*, char*,
unsigned int)+0xe75) [0x2ad39995]
/usr/sbin/mysqld(do_command(THD*)+0xf3) [0x2ad3ac63]
/usr/sbin/mysqld(handle_one_connection+0x268) [0x2ad292f8]
/lib/libpthread.so.0(+0x57b0) [0x4002e7b0]
/lib/libc.so.6(clone+0x5e) [0x402b18fe]
Trying to get some variables.
Some pointers may be invalid and cause the dump to abort...
thd->query at 0x2b3e9840 = insert into `new_q_lines` select * from `v_q_lines`
thd->thread_id=2233
thd->killed=NOT_KILLED
The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
information that should help you find out what is causing the crash.

I wish I knew more about the crash, but that's all I've got.