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The `index` argument to bpf_loop() is threaded as an u64. This lead in a subtle verifier denial where clang cloned the argument in another register[1]. [1] https://github.com/systemd/systemd/pull/34650#issuecomment-2401092895 Signed-off-by: Matteo Croce <teknoraver@meta.com> Link: https://lore.kernel.org/r/20241010035652.17830-1-technoboy85@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>