selftests/bpf: Test pseudo-function policy diagnostics

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Load a socket-filter program that passes a callback to bpf_loop() without
making a BPF-to-BPF call. Verify that the privileged load succeeds and the
unprivileged Policy report identifies the BPF function reference at its
ldimm64 instruction.

Also reject the inaccurate BPF-to-BPF call wording in the portion of the log
covered by the structured report.

Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/bpf/d02e6a6d3b2dc43a207b8ba836ce62497b250dede9252e7409c5212201c794b7@mail.kernel.org
Link: https://lore.kernel.org/bpf/20260816015746.2632990-15-memxor@gmail.com

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Kumar Kartikeya Dwivedi 2026-08-16 03:57:42 +02:00

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

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