2.6.31-rc5-git2 crash on a idle system.

Sachin Sant sachinp at in.ibm.com
Wed Aug 5 19:17:26 EST 2009

Benjamin Herrenschmidt wrote:
> On Tue, 2009-08-04 at 17:57 +0530, Sachin Sant wrote:
>> I have a power6 blade [IBM,7998-61X] running 2.6.31-rc5-git2
>> kernel (a33a052f19a21d727847391c8c1aff3fb221c472). After some
>> period of inactivity the machine drops into xmon with following
>> traces.
> Looks like code has been overwritten with data. Would be useful
> to try to track down when that happens.
> Ben.
2.6.31-rc5-git1 (4905f92ed752d49ebe9cce4fe78a4bc39e710523) works fine
on this box without any problem. So the problem was introduced between
2.6.31-rc5-git1 (4905f92ed752d49ebe9cce4fe78a4bc39e710523) and
2.6.31-rc5-git2 (a33a052f19a21d727847391c8c1aff3fb221c472).

Looking at the changelog all the changes are confined to
drivers/md/ directory ( probably following five commits ). I do have
all the CONFIG_MD* options enabled in my kernel.


I will try to find out the exact commit.



Sachin Sant
IBM Linux Technology Center
India Systems and Technology Labs
Bangalore, India

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