diff options
| -rw-r--r-- | tools/bpf/resolve_btfids/main.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/tools/bpf/resolve_btfids/main.c b/tools/bpf/resolve_btfids/main.c index 4d9ecb975862..35a172d3d80d 100644 --- a/tools/bpf/resolve_btfids/main.c +++ b/tools/bpf/resolve_btfids/main.c @@ -199,9 +199,16 @@ static char *get_id(const char *prefix_end) /* * __BTF_ID__func__vfs_truncate__0 * prefix_end = ^ + * pos = ^ */ - char *p, *id = strdup(prefix_end + sizeof("__") - 1); + int len = strlen(prefix_end); + int pos = sizeof("__") - 1; + char *p, *id; + if (pos >= len) + return NULL; + + id = strdup(prefix_end + pos); if (id) { /* * __BTF_ID__func__vfs_truncate__0 |