From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail333.us4.mandrillapp.com ([205.201.137.77]:57986 "EHLO mail333.us4.mandrillapp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752460AbcCAIYw (ORCPT ); Tue, 1 Mar 2016 03:24:52 -0500 Received: from pmta03.dal05.mailchimp.com (127.0.0.1) by mail333.us4.mandrillapp.com id hql8t8174noe for ; Tue, 1 Mar 2016 08:24:49 +0000 (envelope-from ) From: Subject: Patch "sched/core: Remove false-positive warning from wake_up_process()" has been added to the 3.14-stable tree To: , , , , , , Cc: , Message-Id: <145682068673204@kroah.com> Date: Tue, 01 Mar 2016 08:24:49 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled sched/core: Remove false-positive warning from wake_up_process() to the 3.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: sched-core-remove-false-positive-warning-from-wake_up_process.patch and it can be found in the queue-3.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 119d6f6a3be8b424b200dcee56e74484d5445f7e Mon Sep 17 00:00:00 2001 From: Sasha Levin Date: Mon, 30 Nov 2015 20:34:20 -0500 Subject: sched/core: Remove false-positive warning from wake_up_process() From: Sasha Levin commit 119d6f6a3be8b424b200dcee56e74484d5445f7e upstream. Because wakeups can (fundamentally) be late, a task might not be in the expected state. Therefore testing against a task's state is racy, and can yield false positives. Signed-off-by: Sasha Levin Signed-off-by: Peter Zijlstra (Intel) Acked-by: Linus Torvalds Cc: Mike Galbraith Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: oleg@redhat.com Fixes: 9067ac85d533 ("wake_up_process() should be never used to wakeup a TASK_STOPPED/TRACED task") Link: http://lkml.kernel.org/r/1448933660-23082-1-git-send-email-sasha.levin@oracle.com Signed-off-by: Ingo Molnar Signed-off-by: Greg Kroah-Hartman --- kernel/sched/core.c | 1 - 1 file changed, 1 deletion(-) --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -1696,7 +1696,6 @@ out: */ int wake_up_process(struct task_struct *p) { - WARN_ON(task_is_stopped_or_traced(p)); return try_to_wake_up(p, TASK_NORMAL, 0); } EXPORT_SYMBOL(wake_up_process); Patches currently in stable-queue which might be from sasha.levin@oracle.com are queue-3.14/sched-core-remove-false-positive-warning-from-wake_up_process.patch queue-3.14/rds-verify-the-underlying-transport-exists-before-creating-a-connection.patch queue-3.14/rds-fix-race-condition-when-sending-a-message-on-unbound-socket.patch