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90564f1e3d
This extends the BPF trampoline JIT to support attachment to functions that take small structures (up to 128bit) as argument. This is trivially achieved by saving/restoring a number of "argument registers" rather than a number of arguments. The AAPCS64 section 6.8.2 describes the parameter passing ABI. "Composite types" (like C structs) below 16 bytes (as enforced by the BPF verifier) are provided as part of the 8 argument registers as explained in the section C.12. Signed-off-by: Florent Revest <revest@chromium.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Yonghong Song <yhs@fb.com> Acked-by: Xu Kuohai <xukuohai@huawei.com> Link: https://lore.kernel.org/bpf/20230511140507.514888-1-revest@chromium.org
12 lines
1.3 KiB
Text
12 lines
1.3 KiB
Text
bpf_cookie/multi_kprobe_attach_api # kprobe_multi_link_api_subtest:FAIL:fentry_raw_skel_load unexpected error: -3
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bpf_cookie/multi_kprobe_link_api # kprobe_multi_link_api_subtest:FAIL:fentry_raw_skel_load unexpected error: -3
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fexit_sleep # The test never returns. The remaining tests cannot start.
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kprobe_multi_bench_attach # bpf_program__attach_kprobe_multi_opts unexpected error: -95
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kprobe_multi_test/attach_api_addrs # bpf_program__attach_kprobe_multi_opts unexpected error: -95
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kprobe_multi_test/attach_api_pattern # bpf_program__attach_kprobe_multi_opts unexpected error: -95
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kprobe_multi_test/attach_api_syms # bpf_program__attach_kprobe_multi_opts unexpected error: -95
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kprobe_multi_test/bench_attach # bpf_program__attach_kprobe_multi_opts unexpected error: -95
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kprobe_multi_test/link_api_addrs # link_fd unexpected link_fd: actual -95 < expected 0
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kprobe_multi_test/link_api_syms # link_fd unexpected link_fd: actual -95 < expected 0
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kprobe_multi_test/skel_api # libbpf: failed to load BPF skeleton 'kprobe_multi': -3
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module_attach # prog 'kprobe_multi': failed to auto-attach: -95
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