On Thu, Apr 17, 2025 at 11:15:46PM +0800, KaFai Wan wrote: > If we try to access argument which is pointer to const void, it's an > UNKNOWN type, verifier will fail to load. > > Use is_void_or_int_ptr to check if type is void or int pointer. > Add a selftest to check it. > > --- > KaFai Wan (2): > bpf: Allow access to const void pointer arguments in tracing programs > selftests/bpf: Add test to access const void pointer argument in > tracing program > > kernel/bpf/btf.c | 13 +++---------- > net/bpf/test_run.c | 8 +++++++- > .../selftests/bpf/progs/verifier_btf_ctx_access.c | 12 ++++++++++++ > 3 files changed, 22 insertions(+), 11 deletions(-) > > Changelog: > v2->v3: Addressed comments from jirka > - remove duplicate checks for void pointer > Details in here: > https://lore.kernel.org/bpf/20250416161756.1079178-1-kafai....@hotmail.com/
Acked-by: Jiri Olsa <jo...@kernel.org> thanks, jirka > > v1->v2: Addressed comments from jirka > - use btf_type_is_void to check if type is void > - merge is_void_ptr and is_int_ptr to is_void_or_int_ptr > - fix selftests > Details in here: > https://lore.kernel.org/all/20250412170626.3638516-1-kafai....@hotmail.com/ > > -- > 2.43.0 >
