Re: [PATCH AUTOSEL 6.2 08/30] selftests/bpf: check that modifier resolves after pointer

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On Wed, May 24, 2023 at 06:04:43PM +0100, Lorenz Bauer wrote:
> On Wed, May 24, 2023 at 5:04 PM Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> >
> > Great, any specific commits that fix this issue would be appreciated to
> > be pointed at so we can apply them.
> 
> The problem was introduced by commit f4b8c0710ab6 ("selftests/bpf: Add
> verifier test for release_reference()") in your tree. Seems like
> fixup_map_ringbuf was introduced in upstream commit 4237e9f4a962
> ("selftests/bpf: Add verifier test for PTR_TO_MEM spill") but that
> wasn't backported.

So what tree(s) does this need to be backported to?  I'm confused, this
is a 6.2 email thread which is long end-of-life.

> To restate my original question: how can we avoid breaking BPF
> selftests? From personal experience this happens somewhat regularly.

It can be avoided by people testing and letting me know when things
break :)

thanks,

greg k-h




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