1 files changed, 5 insertions, 0 deletions
diff --git a/src/logging.c b/src/logging.c
index 2a8bfdc8..d32ca43a 100644
--- a/src/logging.c
+++ b/src/logging.c
@@ -336,6 +336,11 @@ err:
  * which should never happen unless even the DLGLOBAL category is missing. */
 static inline int map_subsys(int subsys)
 {
+	/* Note: comparing signed and unsigned integers */
+
+	if (subsys > 0 && ((unsigned int)subsys) >= osmo_log_info->num_cat_user)
+		subsys = DLGLOBAL;
+
 	if (subsys < 0)
 		subsys = subsys_lib2index(subsys);