Detected by LGTM static analyze in Github repo, fix potential multiplication
overflow before result is casted to size_t.
Fixes: 8505e8709b5e ("libbpf: Implement generalized .BTF.ext func/line info adjustment")
Signed-off-by: Andrii Nakryiko <andriin@xxxxxx>
---
tools/lib/bpf/libbpf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 53be32a2b9fc..550950eb1860 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -5802,7 +5802,7 @@ static int adjust_prog_btf_ext_info(const struct bpf_object *obj,
/* append func/line info of a given (sub-)program to the main
* program func/line info
*/
- old_sz = (*prog_rec_cnt) * ext_info->rec_size;
+ old_sz = (size_t)(*prog_rec_cnt) * ext_info->rec_size;
new_sz = old_sz + (copy_end - copy_start);
new_prog_info = realloc(*prog_info, new_sz);
if (!new_prog_info)
--
2.24.1
