On Mon, 21 Feb 2022, Greg KH wrote:
> On Mon, Feb 21, 2022 at 09:52:34AM +0000, Lee Jones wrote:
> > On Thu, 17 Feb 2022, Lee Jones wrote:
> >
> > > On Thu, 17 Feb 2022, Greg KH wrote:
> > >
> > > > On Thu, Feb 17, 2022 at 03:57:23PM +0000, Lee Jones wrote:
> > > > > Good afternoon Daniel,
> > > > >
> > > > > On Mon, 22 Nov 2021, gregkh@xxxxxxxxxxxxxxxxxxx wrote:
> > > > > >
> > > > > > The patch below does not apply to the 5.4-stable tree.
> > > > > > If someone wants it applied there, or to any other stable or longterm
> > > > > > tree, then please email the backport, including the original git commit
> > > > > > id to <stable@xxxxxxxxxxxxxxx>.
> > > > >
> > > > > We are in receipt of a bug report which cites this patch as the fix.
> > > >
> > > > Does the bug report really say that this issue is present in the 5.4
> > > > kernel tree? Anything older?
> > >
> > > Not specifically, but the commit referenced in the Fixes tag landed in
> > > v5.5. and was successfully back-ported to v5.4.144.
> >
> > Another potential avenue might to be revert the back-ported commit
> > which caused the issue from v5.4.y.
>
> Unless that was fixing a different issue? I have no idea at this point
> what commit you are talking about, sorry :(
The bad-commit mentioned in "the Fixes tag":
Fixes: a23740ec43ba ("bpf: Track contents of read-only maps as scalars")
Which as you say, could well have been fixing another issue.
In fact, yes it was:
https://lore.kernel.org/stable/20210821203108.215937-2-rafaeldtinoco@xxxxxxxxx/
Daniel, what do you suggest please?
--
Lee Jones [李琼斯]
Principal Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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