On Tue, Apr 5, 2022 at 5:41 PM Kumar Kartikeya Dwivedi <memxor@xxxxxxxxx> wrote: > > When iterating over modifiers, ensure that type tags can only occur at head of > the chain, and don't occur later, such that checking for them once in the start > tells us there are no more type tags in later modifiers. Clang already ensures > to emit such BTF, but user can craft their own BTF which violates such > assumptions if relied upon in the kernel. > > Kumar Kartikeya Dwivedi (2): > bpf: Ensure type tags precede modifiers in BTF > selftests/bpf: Add tests for type tag order validation > > kernel/bpf/btf.c | 51 +++++++++++++ > tools/testing/selftests/bpf/prog_tests/btf.c | 77 ++++++++++++++++++++ > 2 files changed, 128 insertions(+) > > -- > 2.35.1 > Yonghong, can you please take a look?
