patch-2.1.90 linux/kernel/signal.c

• Lines: 19
• Date: Wed Mar 11 15:57:39 1998
• Orig file: v2.1.89/linux/kernel/signal.c
• Orig date: Tue Mar 10 10:03:36 1998

diff -u --recursive --new-file v2.1.89/linux/kernel/signal.c linux/kernel/signal.c
@@ -438,8 +438,16 @@
 inline int
 kill_proc_info(int sig, struct siginfo *info, pid_t pid)
 {
-	struct task_struct *p = find_task_by_pid(pid);
-	return p ? send_sig_info(sig, info, p) : -ESRCH;
+	int error;
+	struct task_struct *p;
+
+	read_lock(&tasklist_lock);
+	p = find_task_by_pid(pid);
+	error = -ESRCH;
+	if (p)
+		error = send_sig_info(sig, info, p);
+	read_unlock(&tasklist_lock);
+	return error;
 }
 
 /*