diff --git a/[refs] b/[refs]
index 12f8129d1727..42cef093a9a1 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6f56d0f43656deb98c6366a133a75b5a7cf73a26
+refs/heads/master: e502babe0a85226f2417b60a8710cf8192879180
diff --git a/trunk/drivers/tty/sysrq.c b/trunk/drivers/tty/sysrq.c
index 7867b7c4538e..a1bcad7ef739 100644
--- a/trunk/drivers/tty/sysrq.c
+++ b/trunk/drivers/tty/sysrq.c
@@ -322,11 +322,13 @@ static void send_sig_all(int sig)
 {
 	struct task_struct *p;
 
+	read_lock(&tasklist_lock);
 	for_each_process(p) {
 		if (p->mm && !is_global_init(p))
 			/* Not swapper, init nor kernel thread */
 			force_sig(sig, p);
 	}
+	read_unlock(&tasklist_lock);
 }
 
 static void sysrq_handle_term(int key)