diff --git a/kernel/signal.c b/kernel/signal.c
index 48a59eefd8ad..caed9133ae52 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1402,6 +1402,10 @@ static int kill_something_info(int sig, struct siginfo *info, pid_t pid)
 		return ret;
 	}
 
+	/* -INT_MIN is undefined.  Exclude this case to avoid a UBSAN warning */
+	if (pid == INT_MIN)
+		return -ESRCH;
+
 	read_lock(&tasklist_lock);
 	if (pid != -1) {
 		ret = __kill_pgrp_info(sig, info,