[PATCH] bpftool: fix a wrong type cast in btf_dumper_int

Lam Thai
2022-08-24T22:59:18Z

When `data` points to a boolean value, casting it to `int *` is problematic
and could lead to a wrong value being passed to `jsonw_bool`. Change the
cast to `bool *` instead.

Fixes: b12d6ec09730 ("bpf: btf: add btf print functionality")
Signed-off-by: Lam Thai <lamthai@arista.com>
---
tools/bpf/bpftool/btf_dumper.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/bpf/bpftool/btf_dumper.c b/tools/bpf/bpftool/btf_dumper.c
index 125798b0bc5d..19924b6ce796 100644
--- a/tools/bpf/bpftool/btf_dumper.c
+++ b/tools/bpf/bpftool/btf_dumper.c
@@ -452,7 +452,7 @@ static int btf_dumper_int(const struct btf_type *t, __u8 bit_offset,
*(char *)data);
break;
case BTF_INT_BOOL:
- jsonw_bool(jw, *(int *)data);
+ jsonw_bool(jw, *(bool *)data);
break;
default:
/* shouldn't happen */

base-commit: 6fc2838b148f8fe6aa14fc435e666984a0505018
--
2.37.0