selftests/bpf: Test case for lacking CFI stub functions.

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Ensure struct_ops rejects the registration of struct_ops types without
proper CFI stub functions.

bpf_test_no_cfi.ko is a module that attempts to register a struct_ops type
called "bpf_test_no_cfi_ops" with cfi_stubs of NULL and non-NULL value.
The NULL one should fail, and the non-NULL one should succeed. The module
can only be loaded successfully if these registrations yield the expected
results.

Signed-off-by: Kui-Feng Lee <thinker.li@gmail.com>
Link: https://lore.kernel.org/r/20240222021105.1180475-3-thinker.li@gmail.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>

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This commit is contained in:

Kui-Feng Lee 2024-02-21 18:11:05 -08:00 • committed by Martin KaFai Lau

parent 3e0008336a

commit e9bbda13a7

6 changed files with 151 additions and 3 deletions

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10

tools/testing/selftests/bpf/Makefile

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tools/testing/selftests/bpf/bpf_test_no_cfi/Makefile

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tools/testing/selftests/bpf/bpf_test_no_cfi/bpf_test_no_cfi.c

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

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tools/testing/selftests/bpf/testing_helpers.c

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tools/testing/selftests/bpf/testing_helpers.h

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