Segmentation Faults (segfaults) in MySQL Server in Red Hat Enterprise Linux 5
Issue
- mysqld has segfaulted a number of times in the past few days.
- mysqld segfaults when attempting to show the CREATE TABLE statement that defines a view with a missing table. The following message appears in /var/log/mysqld.log:
091116 2:01:51 - 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=2147483648 read_buffer_size=131072 max_used_connections=451 max_connections=500 threads_connected=36 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_connections = 3185148 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. thd=0x2aab40ad17a0 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... Cannot determine thread, fp=0x4a142fb0, backtrace may not be correct. Stack range sanity check OK, backtrace follows: (nil) Stack trace seems successful - bottom reached Please read http://dev.mysql.com/doc/mysql/en/using-stack-trace.html and follow instructions on how to resolve the stack trace. Resolved stack trace is much more helpful in diagnosing the problem, so please do resolve it Trying to get some variables. Some pointers may be invalid and cause the dump to abort... thd->query at 0x2aab4084b0f0 is invalid pointer thd->thread_id=1731495 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.
Environment
Red Hat Enterprise Linux 5.4 / mysql-server-5.0.77-3.el5
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