Re: md raid6 oops in 6.6.4 stable

[Xiao Ni]

On Thu, Dec 7, 2023 at 9:12 PM Genes Lists <lists@xxxxxxxxxxxx> wrote:
>
> I have not had chance to git bisect this but since it happened in stable
> I thought it was important to share sooner than later.
>
> One possibly relevant commit between 6.6.3 and 6.6.4 could be:
>
>    commit 2c975b0b8b11f1ffb1ed538609e2c89d8abf800e
>    Author: Song Liu <song@xxxxxxxxxx>
>    Date:   Fri Nov 17 15:56:30 2023 -0800
>
>      md: fix bi_status reporting in md_end_clone_io
>
> log attached shows page_fault_oops.
> Machine was up for 3 days before crash happened.
>
> gene

Hi all

I'm following the crash reference rule to try to find some hints. The
RDI is ffff8881019312c0 which should be the address of struct
block_device *part. And the CR2 is ffff8881019312e8. So the panic
happens when it wants to introduce part->bd_stamp. Hope it's helpful
if the addresses are right.

Best Regards
Xiao