selftests/bpf: Test epilogue patching when the main prog has multiple BPF_EXIT

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This patch tests the epilogue patching when the main prog has
multiple BPF_EXIT. The verifier should have patched the 2nd (and
later) BPF_EXIT with a BPF_JA that goes back to the earlier
patched epilogue instructions.

Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/r/20240829210833.388152-10-martin.lau@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Martin KaFai Lau 2024-08-29 14:08:31 -07:00 • committed by Alexei Starovoitov

parent 42fdbbde6c

commit cada0bdcc4

2 changed files with 84 additions and 0 deletions

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2

tools/testing/selftests/bpf/prog_tests/pro_epilogue.c

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82

tools/testing/selftests/bpf/progs/epilogue_exit.c

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