Re: Bug#609371: linux-image-2.6.37-trunk-sparc64: module scsi_mod:

[Richard Mortimer <richm@oldelvet.org.uk>]

On 21/01/2011 20:40, Mathieu Desnoyers wrote:
> * Richard Mortimer (richm@oldelvet.org.uk) wrote:
> [...]
>> P.S. I saw your followup mail so hopefully this matches what you have found!
>
> Thanks for the info! At first glance, it does not seem to contradict my
> findings. When you find time, can you have a try at v3 I just posted ?
>
I'm setting the compilation off now. I will give it a whirl some time 
Saturday or Sunday.

Before I did that I created kernel/sched.s and have verified that the 
two error locations are accesses to it_func_ptr as you suspected.


ldx     [%g1+%lo(__tracepoint_sched_wakeup)+28], %l0    !, it_func_ptr
and
ldx     [%g3], %l2      !, it_func_ptr

with v3 of you patches applied it uses +32 to get the offset of 
it_func_ptr so that looks good.

> Make sure to start tracing in your tests, as I think the unaligned access only
> happens when accessing the struct tracepoint fields below the "int state" field.
>
Will do.

Regards

Richard