RE: [PATCH v2 1/2] EDAC/igen6: Fix NULL pointer dereference

[Luck, Tony]

> This issue occurred because one memory controller was disabled by
> the BIOS but the igen6_edac driver still checked all the memory
> controllers, including this absent one, to identify the source of
> the error. Accessing the null MMIO for the absent memory controller
> resulted in the oops above.
>
> Fix this issue by reverting the configuration structure to non-const
> and updating the field 'res_cfg->num_imc' to reflect the number of
> detected memory controllers.
>
> Fixes: 20e190b1c1fd ("EDAC/igen6: Skip absent memory controllers")
> Reported-by: Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
> Closes: https://lore.kernel.org/all/aFFN7RlXkaK_loQb@mail-itl/
> Suggested-by: Borislav Petkov <bp@xxxxxxxxx>
> Tested-by: Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@xxxxxxxxx>

Applied (both this and patch 2/2) to RAS edac-drivers branch.

Thanks

-Tony