mysql crashed

Storage Engine : innodb
Database Size : 300 GB

mysql crashed with following error.

100607 10:48:05 InnoDB: Page checksum 2409679152, prior-to-4.0.14-form checksum 2116520512
InnoDB: stored checksum 3419910460, prior-to-4.0.14-form stored checksum 555
InnoDB: Page lsn 555 3228275704, low 4 bytes of lsn at page end 3228275704
InnoDB: Page number (if stored to page already) 93232,
InnoDB: space id (if created with >= MySQL-4.1.1 and stored already) 549
InnoDB: Page may be an index page where index id is 0 1654
100607 10:48:05 InnoDB: Assertion failure in thread 1106942272 in file page/page0page.c line 133
InnoDB: We intentionally generate a memory trap.
InnoDB: Submit a detailed bug report to
InnoDB: If you get repeated assertion failures or crashes, even
InnoDB: immediately after the mysqld startup, there may be
InnoDB: corruption in the InnoDB tablespace. Please refer to
InnoDB: [URL=“”][/URL]
InnoDB: about forcing recovery.
100607 10:48:05 - 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.

It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 10253281 K
bytes of memory
Hope that’s ok; if not, decrease some variables in the equation.

thd: 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
The manual page at [URL][/URL] contains
information that should help you find out what is causing the crash.
100607 10:48:06 mysqld_safe mysqld from pid file /var/lib/mysql/ ended

i tried starting mysql with
innodb_force_recovery = 4 then 3,2,1
everytime mysql crashed with same error

Please suggest.

Looks like you have some data corruption.

Here is the #1 mistake people do when they get InnoDB corruption: they try to repair the table, filesystem, etc and they don’t check their hardware. InnoDB DOES NOT RANDOMLY CORRUPT DATA – most of the time it is BAD HARDWARE. You MUST check your hardware. I have seen people spend huge amounts of money recovering data, only to get more corruption again.