060607 19:55:43 mysqld restarted 060607 19:55:44 InnoDB: Database was not shut down normally! InnoDB: Starting crash recovery. InnoDB: Reading tablespace information from the .ibd files... InnoDB: Restoring possible half-written data pages from the doublewrite InnoDB: buffer... 060607 19:55:44 InnoDB: Starting log scan based on checkpoint at InnoDB: log sequence number 20 36601436. InnoDB: Doing recovery: scanned up to log sequence number 20 36601474 InnoDB: In a MySQL replication slave the last master binlog file InnoDB: position 0 27180154, file name prodipdb01-bin.000435 InnoDB: Last MySQL binlog file position 0 79, file name ./prodipdb02-bin.000793 060607 19:55:44 InnoDB: Flushing modified pages from the buffer pool... 060607 19:55:44 InnoDB: Started; log sequence number 20 36601474 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=4190208 max_used_connections=0 max_connections=1000 threads_connected=0 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_connections = 2011224 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. thd=0xa8911b0 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=0xbfff9f18, backtrace may not be correct. Stack range sanity check OK, backtrace follows: 0x80a4a04 0x82b9cbc 0x8172fe0 0x819e046 0x8125425 0x8125836 0x815fbee 0x80a51c7 0x82c5b80 0x8048121 New value of fp=(nil) failed sanity check, terminating stack trace! 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 (nil) is invalid pointer thd->thread_id=0 The manual page at http://www.mysql.com/doc/en/Crashing.html contains information that should help you find out what is causing the crash.