diff options
Diffstat (limited to 'kernel/bpf/btf.c')
| -rw-r--r-- | kernel/bpf/btf.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c index 4ff0de860ab7..91afdd4c82e3 100644 --- a/kernel/bpf/btf.c +++ b/kernel/bpf/btf.c @@ -3806,6 +3806,19 @@ bool btf_ctx_access(int off, int size, enum bpf_access_type type, btf_kind_str[BTF_INFO_KIND(t->info)]); return false; } + + /* check for PTR_TO_RDONLY_BUF_OR_NULL or PTR_TO_RDWR_BUF_OR_NULL */ + for (i = 0; i < prog->aux->ctx_arg_info_size; i++) { + const struct bpf_ctx_arg_aux *ctx_arg_info = &prog->aux->ctx_arg_info[i]; + + if (ctx_arg_info->offset == off && + (ctx_arg_info->reg_type == PTR_TO_RDONLY_BUF_OR_NULL || + ctx_arg_info->reg_type == PTR_TO_RDWR_BUF_OR_NULL)) { + info->reg_type = ctx_arg_info->reg_type; + return true; + } + } + if (t->type == 0) /* This is a pointer to void. * It is the same as scalar from the verifier safety pov. |