When having helper that defines both arg*_btf_id and arg*_size fields,
one of those fields will end up with zero value.
With helper definition like:
.arg1_type = ARG_PTR_TO_BTF_ID,
.arg1_btf_id = &btf_tracing_ids[BTF_TRACING_TYPE_VMA],
.arg2_type = ARG_PTR_TO_FIXED_SIZE_MEM,
.arg2_size = BUILD_ID_SIZE_MAX,
The arg2_size field initializer zeros out the rest of the arg*_size
fields of its parent annon struct, so it effectively zeros also
arg1_btf_id field.
Moving arg*_btf_id and arg*_size fields into separate unions.
Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
---
include/linux/bpf.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index 798aec816970..21a1d42b5d4c 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -640,6 +640,8 @@ struct bpf_func_proto {
u32 *arg5_btf_id;
};
u32 *arg_btf_id[5];
+ };
+ union {
struct {
size_t arg1_size;
size_t arg2_size;
--
2.38.1
