diff --git a/kernel/signal.c b/kernel/signal.c
index 24be82c0aae36ea636f8c346a67b7abcf7323590..02ef3548aeb086b22b49b3cfa4d68819a9a1d5b5 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -551,9 +551,7 @@ static int check_kill_permission(int sig, struct siginfo *info,
 	    !capable(CAP_KILL)) {
 		switch (sig) {
 		case SIGCONT:
-			read_lock(&tasklist_lock);
 			sid = task_session(t);
-			read_unlock(&tasklist_lock);
 			/*
 			 * We don't return the error if sid == NULL. The
 			 * task was unhashed, the caller must notice this.