Fix a bug with passing trusted PTR_TO_BTF_ID_OR_NULL register into global
subprog that expects `__arg_trusted __arg_nullable` arguments, which was
discovered when adopting production BPF application.
Also fix annoying warnings that are irrelevant for static subprogs, which are
just an artifact of using btf_prepare_func_args() for both static and global
subprogs.
Andrii Nakryiko (3):
bpf: handle trusted PTR_TO_BTF_ID_OR_NULL in argument check logic
selftests/bpf: add more cases for __arg_trusted __arg_nullable args
bpf: don't emit warnings intended for global subprogs for static
subprogs
kernel/bpf/btf.c | 6 ++++
kernel/bpf/verifier.c | 1 +
.../bpf/progs/verifier_global_ptr_args.c | 32 +++++++++++++++++--
3 files changed, 36 insertions(+), 3 deletions(-)
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2.34.1
