selftests/bpf: Add test passing MAYBE_NULL reg to bpf_refcount_acquire

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The test added in this patch exercises the logic fixed in the previous
patch in this series. Before the previous patch's changes,
bpf_refcount_acquire accepts MAYBE_NULL local kptrs; after the change
the verifier correctly rejects the such a call.

Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Link: https://lore.kernel.org/r/20231107085639.3016113-3-davemarchevsky@fb.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Dave Marchevsky 2023-11-07 00:56:35 -08:00 • committed by Alexei Starovoitov

parent 1500a5d9f4

commit f460e7bdb0

1 changed files with 19 additions and 0 deletions

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

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