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selftests/bpf: Check combination of jit blinding and pointers to bpf subprogs.
Check that ld_imm64 with src_reg=1 (aka BPF_PSEUDO_FUNC) works with jit_blinding. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/bpf/20220513011025.13344-2-alexei.starovoitov@gmail.com
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@ -89,6 +89,11 @@ int prog2(void *ctx)
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return 0;
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}
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static int empty_callback(__u32 index, void *data)
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{
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return 0;
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}
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/* prog3 has the same section name as prog1 */
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SEC("raw_tp/sys_enter")
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int prog3(void *ctx)
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@ -98,6 +103,9 @@ int prog3(void *ctx)
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if (!BPF_CORE_READ(t, pid) || !get_task_tgid((uintptr_t)t))
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return 1;
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/* test that ld_imm64 with BPF_PSEUDO_FUNC doesn't get blinded */
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bpf_loop(1, empty_callback, NULL, 0);
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res3 = sub3(5) + 6; /* (5 + 3 + (4 + 1)) + 6 = 19 */
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return 0;
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}
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