bpf_object__btf() can return a NULL value. If bpf_object__btf returns
null, do not progress through codegen_asserts(). This avoids a null ptr
dereference at the call btf__type_cnt() in the function find_type_for_map()
Signed-off-by: Michael Mullin <masmullin@xxxxxxxxx>
---
tools/bpf/bpftool/gen.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/tools/bpf/bpftool/gen.c b/tools/bpf/bpftool/gen.c
index 4c9477ff748d..f158dc1c2149 100644
--- a/tools/bpf/bpftool/gen.c
+++ b/tools/bpf/bpftool/gen.c
@@ -474,6 +474,9 @@ static void codegen_asserts(struct bpf_object *obj, const char *obj_name)
const struct btf_type *sec;
char map_ident[256], var_ident[256];
+ if (!btf)
+ return;
+
codegen("\
\n\
__attribute__((unused)) static void \n\
--
2.36.1
