test_bpf: add similarly conflicting jump test case only for classic
While 3b529602 ("test_bpf: add more eBPF jump torture cases") added the int3 bug test case only for eBPF, which needs exactly 11 passes to converge, here's a version for classic BPF with 11 passes, and one that would need 70 passes on x86_64 to actually converge for being successfully JITed. Effectively, all jumps are being optimized out resulting in a JIT image of just 89 bytes (from originally max BPF insns), only returning K. Might be useful as a receipe for folks wanting to craft a test case when backporting the fix in commit 3f7352bf ("x86: bpf_jit: fix compilation of large bpf programs") while not having eBPF. The 2nd one is delegated to the interpreter as the last pass still results in shrinking, in other words, this one won't be JITed on x86_64. Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net> Acked-by: NAlexei Starovoitov <ast@plumgrid.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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