On Mon, Nov 18, 2019 at 10:21:51PM -0800, Andrii Nakryiko wrote:
>
> -static __attribute__ ((noinline))
> -int test_pkt_access_subprog2(int val, volatile struct __sk_buff *skb)
> +__attribute__ ((noinline))
> +int test_pkt_access_subprog2(int val, struct __sk_buff *skb)
> {
> return skb->len * val;
> }
Did you run test_progs -n 8?
Above breaks it with:
10: (61) r1 = *(u32 *)(r6 +40)
func 'test_pkt_access_subprog2' doesn't have 6-th argument
invalid bpf_context access off=40 size=4
The point of the subprog2 is to test the scenario where BTF disagress with llvm
optimizations.
