Re: [PATCH] efivarfs: fix NULL-deref on mount when no efivars

[Ard Biesheuvel]

On Fri, 27 Jan 2023 at 09:28, Johan Hovold <johan@xxxxxxxxxx> wrote:
>
> On Thu, Jan 26, 2023 at 09:32:27PM +0100, Ard Biesheuvel wrote:
> > On Thu, 26 Jan 2023 at 12:23, Johan Hovold <johan+linaro@xxxxxxxxxx> wrote:
> > >
> > > The VFS calls kill_sb() also in case mount fails in get_tree().
> > >
> > > Add the missing check to make sure that efivars has been registered also
> > > to kill_sb() to avoid dereferencing a NULL pointer when trying to remove
> > > efivar entries.
> > >
> > > Fixes: c3fd71b428b8 ("efivarfs: always register filesystem")
> > > Reported-by: Steev Klimaszewski <steev@xxxxxxxx>
> > > Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
> >
> > Thanks - I have squashed this with the original patch.
>
> Thanks, Ard. And sorry about not catching this before posting.
>

No worries.