Hello Alexei, Daniel, and the bpf community, As part of trying to improve stable kernels' testing, we're running ~current kselftests with stable kernels (4.4 and 4.9 for now), and reporting issues. While doing this, we see some failures in the bpf tests - most of them look like they are due to trying to test missing features. In Greg's opinion (and mine too :) ), when tests can't find the feature they're trying to test, they should 'degrade gracefully', eg perhaps SKIP instead of FAIL( or core dumps). As you guys are the experts in BPF, may I request someone from this community to look at how can it be achieved with bpf tests? Appreciate the help! Best regards, Sumit. -- Thanks and regards, Sumit Semwal Linaro Mobile Group - Kernel Team Lead Linaro.org │ Open source software for ARM SoCs