1 files changed, 1 insertions, 10 deletions

diff --git a/kernel/signal.c b/kernel/signal.c
index 13371d17358d..17859f0d8411 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1138,8 +1138,7 @@ static int kill_something_info(int sig, struct siginfo *info, int pid)
  */
 
 /*
- * These two are the most common entry points.  They send a signal
- * just to the specific thread.
+ * The caller must ensure the task can't exit.
  */
 int
 send_sig_info(int sig, struct siginfo *info, struct task_struct *p)
@@ -1154,17 +1153,9 @@ send_sig_info(int sig, struct siginfo *info, struct task_struct *p)
         if (!valid_signal(sig))
                 return -EINVAL;
 
-        /*
-         * We need the tasklist lock even for the specific
-         * thread case (when we don't need to follow the group
-         * lists) in order to avoid races with "p->sighand"
-         * going away or changing from under us.
-         */
-        read_lock(&tasklist_lock);  
         spin_lock_irqsave(&p->sighand->siglock, flags);
         ret = specific_send_sig_info(sig, info, p);
         spin_unlock_irqrestore(&p->sighand->siglock, flags);
-        read_unlock(&tasklist_lock);
         return ret;
 }