在我的CentOS 5.10版（最终版）上，内核版本：Linux 2.6.18-371.6.1.el5#1 SMP Wed Mar 12 20:08:05 EDT 2014 i686 i686 i386 GNU/Linux，我有mysql版本mysql-5.6.17-4.el5。
我的mysqld在“service mysqld start”后崩溃，日志中有错误。你能帮忙吗：
2014-04-24 07:46:00 24175 [Note] Server hostname (bind-address): '*'; port: 3306
2014-04-24 07:46:00 24175 [Note] IPv6 is available.
2014-04-24 07:46:00 24175 [Note] - '::' resolves to '::';
2014-04-24 07:46:00 24175 [Note] Server socket created on IP: '::'.
14:46:00 UTC - 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=33554432
read_buffer_size=131072
max_used_connections=0
max_threads=500
thread_count=0
connection_count=0
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 229484 K bytes of memory
Hope that's ok; if not, decrease some variables in the equation.
Thread pointer: 0xa22d290
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 = ffffffffbfaeb048 thread_stack 0x30000
/usr/sbin/mysqld(my_print_stacktrace+0x33)[0x856f7d3]
/usr/sbin/mysqld(handle_fatal_signal+0x43e)[0x828b29e]
[0xad7420]
/usr/sbin/mysqld(_Z9get_fieldP11st_mem_rootP5Field+0x67)[0x83c3127]
/usr/sbin/mysqld[0x82b4db8]
/usr/sbin/mysqld(_Z10acl_reloadP3THD+0x4ba)[0x82b6d7a]
/usr/sbin/mysqld(_Z8acl_initb+0x134)[0x82bb984]
/usr/sbin/mysqld(_Z11mysqld_mainiPPc+0x938)[0x8194548]
/usr/sbin/mysqld(main+0x32)[0x8187372]
/lib/libc.so.6(__libc_start_main+0xdc)[0x688ebc]
/usr/sbin/mysqld(__gxx_personality_v0+0x3b9)[0x8187281]
Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (0): is an invalid pointer
Connection ID (thread ID): 0
Status: NOT_KILLED
自由命令输出：
[root@localhost ~]# free
total used free shared buffers cached
Mem: 1034656 634984 399672 0 55416 283292
-/+ buffers/cache: 296276 738380
Swap: 2096472 144 2096328
提前谢谢你！
最佳答案
此处描述的修复：http://bugs.mysql.com/bug.php?id=70431
“通过向my.cnf添加跳过授权表来启动服务器，并检查mysqluser表的结构是什么样子。”