Re: KASAN: null-ptr-deref Write in xlog_cil_commit

Leah Rumancik
2024-04-25T20:31:18Z

Hi Marius,

Thanks for the bug report. If you can reliably reproduce this issue
and can provide a patch which fixes it, I can add that patch to the
next set of 5.15 backports. I am a bit limited for time at the moment
though and trying to work on the backlog of backports into 6.1.y as
well, so I am not sure what the exact timeline would look for a 5.15.y
set yet.

- Leah

On Tue, Apr 23, 2024 at 8:42 PM Darrick J. Wong <djwong@kernel.org> wrote:
>
> On Tue, Apr 23, 2024 at 08:05:22AM -0700, Marius Fleischer wrote:
> > Hi Dave,
> >
> > Thank you so much for your detailed explanations!
> >
> > > > Do you think it would make sense to backport that patch to 5.15.156 (the
> > > > LTS kernel)?
> > >
> > > That's up to the 5.15 LTS maintainers to decide. They also need to
> > > weigh up the fact that xlog_cil_kvmalloc() doesn't exist anymore in
> > > the upstream code base. i.e. we found other places that had the same
> > > kvmalloc() performance problems, and so lifted that code up further
> > > and used it in other places in XFS....
> > >
> >
> > Understood. Please allow me one last follow-up question. Did I add the correct
> > maintainers/mailing lists to reach the 5.15 LTS maintainers? If not,
> > how do I find
> > the correct addresses? I used scripts/get_maintainer.pl as suggested here
> > (https://www.kernel.org/doc/html/latest/admin-guide/reporting-issues.html)
> > to locate maintainers/mailing lists.
>
> You got it correct -- Leah is the 5.15 maintainer of record.
>
> --D
>
> > Wishing you a lovely week!
> >
> > Best,
> > Marius