field->size has been initialized by bpf_parse_fields() with the value
returned by btf_field_type_size(). Use it instead of calling
btf_field_type_size() again.
Acked-by: Eduard Zingerman <eddyz87@xxxxxxxxx>
Signed-off-by: Kui-Feng Lee <thinker.li@xxxxxxxxx>
---
kernel/bpf/btf.c | 2 +-
kernel/bpf/verifier.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index 821063660d9f..226138bd139a 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -6693,7 +6693,7 @@ int btf_struct_access(struct bpf_verifier_log *log,
for (i = 0; i < rec->cnt; i++) {
struct btf_field *field = &rec->fields[i];
u32 offset = field->offset;
- if (off < offset + btf_field_type_size(field->type) && offset < off + size) {
+ if (off < offset + field->size && offset < off + size) {
bpf_log(log,
"direct access to %s is disallowed\n",
btf_field_type_name(field->type));
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index 3cc8e68b5b73..7cfbc06d8d1b 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -5448,7 +5448,7 @@ static int check_map_access(struct bpf_verifier_env *env, u32 regno,
* this program. To check that [x1, x2) overlaps with [y1, y2),
* it is sufficient to check x1 < y2 && y1 < x2.
*/
- if (reg->smin_value + off < p + btf_field_type_size(field->type) &&
+ if (reg->smin_value + off < p + field->size &&
p < reg->umax_value + off + size) {
switch (field->type) {
case BPF_KPTR_UNREF:
--
2.34.1
