From: Andrew Morton <akpm@linux-foundation.org>
Date: Sat, 10 Sep 2016 10:36:37 +0000 (+1000)
Subject: hung_task-allow-hung_task_panic-when-hung_task_warnings-is-0-fix
X-Git-Url: http://git.efficios.com/?p=deliverable%2Flinux.git;a=commitdiff_plain;h=a02163494e4ae3c0deb6a0c66c7736e43e19733f

hung_task-allow-hung_task_panic-when-hung_task_warnings-is-0-fix

fix off-by-one

Cc: John Siddle <jsiddle@redhat.com>
Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/kernel/hung_task.c b/kernel/hung_task.c
index dbf58050f3fa..2b59c82cc3e1 100644
--- a/kernel/hung_task.c
+++ b/kernel/hung_task.c
@@ -101,14 +101,12 @@ static void check_hung_task(struct task_struct *t, unsigned long timeout)
 	if (!sysctl_hung_task_warnings && !sysctl_hung_task_panic)
 		return;
 
-	if (sysctl_hung_task_warnings > 0)
-		sysctl_hung_task_warnings--;
-
 	/*
 	 * Ok, the task did not get scheduled for more than 2 minutes,
 	 * complain:
 	 */
 	if (sysctl_hung_task_warnings) {
+		sysctl_hung_task_warnings--;
 		pr_err("INFO: task %s:%d blocked for more than %ld seconds.\n",
 			t->comm, t->pid, timeout);
 		pr_err("      %s %s %.*s\n",