Re: [PATCH stable 4.19] bpf: fix buggy r0 retval refinement for tracing helpers

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On 4/21/20 6:31 PM, Lorenzo Fontana wrote:
[...]
Hi Daniel,
Leonardo and I applied this on top of 8e2406c85187 and our old probe works as
expected, as well as the new one.
We produced a dot graph [0] of the in memory xlated representation [1], it clearly
shows that this patch solves the bug. A rendered [2] version is
available for the lazy.

Perfect, thanks for double-checking!

So, Daniel please add a Tested-by for each one of us.

Here we go:

Tested-by: Lorenzo Fontana <fontanalorenz@xxxxxxxxx>
Tested-by: Leonardo Di Donato <leodidonato@xxxxxxxxx>

Thanks Daniel!
Lorenzo and Leonardo

[0] https://fs.fntlnz.wtf/kernel/bpf-retval-refinement-4-19/prog.dot
[1] https://fs.fntlnz.wtf/kernel/bpf-retval-refinement-4-19/xlated.txt
[2] https://fs.fntlnz.wtf/kernel/bpf-retval-refinement-4-19/render.png





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