From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759425Ab2EJMUK (ORCPT ); Thu, 10 May 2012 08:20:10 -0400 Received: from mail-lpp01m010-f46.google.com ([209.85.215.46]:47374 "EHLO mail-lpp01m010-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755015Ab2EJMUI (ORCPT ); Thu, 10 May 2012 08:20:08 -0400 Subject: [PATCH v2] sched: taint kernel with TAINT_WARN after sleep-in-atomic bug To: Peter Zijlstra From: Konstantin Khlebnikov Cc: Andrew Morton , Ingo Molnar , linux-kernel@vger.kernel.org Date: Thu, 10 May 2012 16:20:04 +0400 Message-ID: <20120510122004.4873.12726.stgit@zurg> In-Reply-To: <1336650398.27020.91.camel@laptop> References: <1336650398.27020.91.camel@laptop> User-Agent: StGit/0.15 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Usually sleep-in-atomic bugs are followed by dozens other warnings. This patch should help to figure out original source of problem. Signed-off-by: Konstantin Khlebnikov --- kernel/sched/core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 0533a68..b6458e4 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -3113,6 +3113,7 @@ static noinline void __schedule_bug(struct task_struct *prev) if (irqs_disabled()) print_irqtrace_events(prev); dump_stack(); + add_taint(TAINT_WARN); } /*