selftests/bpf: Add tests for stack argument validation

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Add negative tests that verify the kfunc (rejecting kfunc call
with >8 byte struct as stack argument) and the verifier
(rejecting invalid uses of r11 for stack arguments).

Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20260513045132.2398371-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Yonghong Song 2026-05-12 21:51:32 -07:00 • committed by Alexei Starovoitov

parent 79e7ec0063

commit 9f42204c62

4 changed files with 139 additions and 0 deletions

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10

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

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114

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

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7

tools/testing/selftests/bpf/test_kmods/bpf_testmod.c

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8

tools/testing/selftests/bpf/test_kmods/bpf_testmod_kfunc.h

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