selftests: bpf: Add tests for void global subprogs

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Add additional testing for void global functions. The tests
ensure that calls to void global functions properly keep
R0 invalid. Also make sure that exception callbacks still
require a return value.

Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Emil Tsalapatis <emil@etsalapatis.com>
Link: https://lore.kernel.org/r/20260228184759.108145-6-emil@etsalapatis.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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This commit is contained in:

Emil Tsalapatis 2026-02-28 13:47:59 -05:00 • committed by Alexei Starovoitov

parent 8446ded1e1

commit 422f1efabd

7 changed files with 111 additions and 3 deletions

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1

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

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24

tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c

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

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

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

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

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

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