Commit 819d4342 authored by Stanislav Fomichev's avatar Stanislav Fomichev Committed by Daniel Borkmann
Browse files

bpf: Resolve modifiers when walking structs 



It is impossible to use skb_frag_t in the tracing program. Resolve typedefs
when walking structs.

Signed-off-by: default avatarStanislav Fomichev <sdf@google.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Acked-by: default avatarYonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20230626212522.2414485-1-sdf@google.com
parent 17e8e5d6

kernel/bpf/btf.c

+2 −0
Original line number Diff line number Diff line
@@ -6135,6 +6135,8 @@ static int btf_struct_walk(struct bpf_verifier_log *log, const struct btf *btf, 


	*flag = 0;

again:

	if (btf_type_is_modifier(t))

		t = btf_type_skip_modifiers(btf, t->type, NULL);

	tname = __btf_name_by_offset(btf, t->name_off);

	if (!btf_type_is_struct(t)) {

		bpf_log(log, "Type '%s' is not a struct\n", tname);