diff options
Diffstat (limited to 'kernel/bpf/verifier.c')
| -rw-r--r-- | kernel/bpf/verifier.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 1c4ebb326785..358a3566bb60 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -8189,6 +8189,11 @@ static int process_iter_arg(struct bpf_verifier_env *env, int regno, int insn_id const struct btf_type *t; int spi, err, i, nr_slots, btf_id; + if (reg->type != PTR_TO_STACK) { + verbose(env, "arg#%d expected pointer to an iterator on stack\n", regno - 1); + return -EINVAL; + } + /* For iter_{new,next,destroy} functions, btf_check_iter_kfuncs() * ensures struct convention, so we wouldn't need to do any BTF * validation here. But given iter state can be passed as a parameter |