mysql 启动报错~

InnoDB: about forcing recovery.
140714 15:00:36 - 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=67108864
read_buffer_size=5242880
max_used_connections=0
max_threads=30
threads_connected=0
It is possible that mysqld could use up to 
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 373046 K
bytes of memory
Hope that's ok; if not, decrease some variables in the equation.
Thread pointer: 0x0
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 = (nil) thread_stack 0x30000
/home1/yangsm/local/mysql/libexec/mysqld(my_print_stacktrace+0x24) [0x861484]
/home1/yangsm/local/mysql/libexec/mysqld(handle_segfault+0x351) [0x5b5141]
/lib64/libpthread.so.0 [0x3d0da0ebd0]
/lib64/libc.so.6(gsignal+0x35) [0x3d0ce30265]
/lib64/libc.so.6(abort+0x110) [0x3d0ce31d10]
/home1/yangsm/local/mysql/libexec/mysqld(fil_io+0x3b7) [0x781cc7]
/home1/yangsm/local/mysql/libexec/mysqld [0x76c144]
/home1/yangsm/local/mysql/libexec/mysqld(buf_read_page+0x200) [0x76c640]
/home1/yangsm/local/mysql/libexec/mysqld(buf_page_get_gen+0x144) [0x765654]
/home1/yangsm/local/mysql/libexec/mysqld(btr_cur_search_to_nth_level+0x3df) [0x758bcf]
/home1/yangsm/local/mysql/libexec/mysqld(btr_pcur_open_on_user_rec+0x6a) [0x803a6a]
/home1/yangsm/local/mysql/libexec/mysqld [0x776f75]
/home1/yangsm/local/mysql/libexec/mysqld(dict_load_sys_table+0x58) [0x778158]
/home1/yangsm/local/mysql/libexec/mysqld(dict_boot+0x8a2) [0x8059a2]
/home1/yangsm/local/mysql/libexec/mysqld(innobase_start_or_create_for_mysql+0x111c) [0x7e2efc]
/home1/yangsm/local/mysql/libexec/mysqld [0x749362]
/home1/yangsm/local/mysql/libexec/mysqld(ha_initialize_handlerton(st_plugin_int*)+0x31) [0x6ac701]
/home1/yangsm/local/mysql/libexec/mysqld [0x732a9d]
/home1/yangsm/local/mysql/libexec/mysqld(plugin_init(int*, char**, int)+0x81b) [0x7360fb]
/home1/yangsm/local/mysql/libexec/mysqld [0x5b5a5f]
/home1/yangsm/local/mysql/libexec/mysqld(main+0x696) [0x5b9a16]
/lib64/libc.so.6(__libc_start_main+0xf4) [0x3d0ce1d994]
/home1/yangsm/local/mysql/libexec/mysqld [0x4e62f9]
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.
140714 15:01:22 mysqld_safe mysqld from pid file /home1/yangsm/local/mysql/tmp/mysql.pid ended