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f8ade2342e
Teach the BPF verifier to treat pointers to struct types returned from BPF kfuncs as implicitly trusted (PTR_TO_BTF_ID | PTR_TRUSTED) by default. Returning untrusted pointers to struct types from BPF kfuncs should be considered an exception only, and certainly not the norm. Update existing selftests to reflect the change in register type printing (e.g. `ptr_` becoming `trusted_ptr_` in verifier error messages). Link: https://lore.kernel.org/bpf/aV4nbCaMfIoM0awM@google.com/ Signed-off-by: Matt Bobrowski <mattbobrowski@google.com> Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Link: https://lore.kernel.org/r/20260113083949.2502978-1-mattbobrowski@google.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>