Pr/olsajiri/override user #4005
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Signed-off-by: Jiri Olsa <[email protected]>
It helps with making verifier happy wrt masking usdt arg index. Signed-off-by: Jiri Olsa <[email protected]>
Signed-off-by: Jiri Olsa <[email protected]>
Signed-off-by: Jiri Olsa <[email protected]>
Signed-off-by: Jiri Olsa <[email protected]>
Signed-off-by: Jiri Olsa <[email protected]>
Signed-off-by: Jiri Olsa <[email protected]>
Signed-off-by: Jiri Olsa <[email protected]>
Signed-off-by: Jiri Olsa <[email protected]>
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Tried this out and it seems to work 🎉 One thing I noticed is that the kernel has lockdown enabled, the program refuses to load:
This happens even if we don't use the "Set" action. So we might want to have a way to check this at runtime and set a constant in the bpf code to prove to the verifier that the write is actually dead code, so that we can load policies that do not use "Set" in lockdown kernels. It can be a followup to this PR though. |
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