selftests/bpf: Restrict bpf_set_retval argument in sk_bypass_prot_mem

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Test sk_bypass_prot_mem passes an unchecked value as argument to helper
bpf_set_retval(). The argument can be outside the valid range enforced
by the strict retval validation added in the next patch.

Restrict the argument to -EFAULT when it is outside the valid range, so
the test will not be rejected by the verifier when retval validation
is enforced.

Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Link: https://lore.kernel.org/r/20260605140243.664590-2-xukuohai@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Xu Kuohai 2026-06-05 14:02:41 +00:00 • committed by Alexei Starovoitov

parent b403670b82

commit 6fa2839893

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

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