在MySQL 5.0.16上，用mysqldump導出數據，MySQLdump半天沒反應。
操作系統是RHEL4.0。
看日志
*** glibc detected *** free(): invalid pointer: 0xb17d60b0 ***
MySQLd got signal 6;
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=8388600
read_buffer_size=131072
max_used_connections=2
max_connections=100
threads_connected=2
It is possible that MySQLd could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_connections = 225791 K
bytes of memory
Hope that's ok; if not, decrease some variables in the equation.
thd=0x9d69ba0
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=0xb17d5a6c, backtrace may not be correct.
Stack range sanity check OK, backtrace follows:
0x815f652
0x9ed7c8
(nil)
0x81d40a
0x823b3f
0x823eba
0x819eb85
0x819f5bf
0x819f7f9
0x82314e9
0x8178872
0x817db98
0x817e59c
0x817f99c
0x9e7341
0x8896fe
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 0x9d7bb00 = show create table `T_SOD_BEHAVIORRECORD_VIEW`
thd->thread_id=7
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.
Number of processes running now: 0
070119 15:58:48 MySQLd restarted
mysqldump導致mysqld崩潰了，這個現象在源碼安裝和rpm安裝的MySQL5.0.16上都出現了。換成5.0.19就好了。查了一下bug：
Bug #14726 Crash when MySQLdump encounters a vIEw while privileges limited.
如果用視圖的話，至少要用5.0.17以上版本了
