filter: Plug a SEGV case for fqname

Signed-off-by: Hiroshi Hatake <hiroshi@chronosphere.io>
fluent · Feb 23, 2024 · d3ca531 · d3ca531
1 parent 9335a44
commit d3ca531
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/cmt_filter.c b/src/cmt_filter.c
@@ -169,6 +169,10 @@ static int compare_fqname(struct cmt_opts *src, const char *fqname,
     size_t fqname_size;
 
     if (flags & CMT_FILTER_PREFIX) {
+        if (fqname == NULL) {
+            return CMT_FALSE;
+        }
+
         fqname_size = strlen(fqname);
     }
     else if (compare_ctx != NULL && compare != NULL) {