[tip:sched/core] sched: Taint kernel with TAINT_WARN after sleep-in-atomic bug

[tip-bot for Konstantin Khlebnikov <khlebnikov@openvz.org>]

Commit-ID:  1c2927f18576d65631d8e0ddd19e1d023183222e
Gitweb:     http://git.kernel.org/tip/1c2927f18576d65631d8e0ddd19e1d023183222e
Author:     Konstantin Khlebnikov <khlebnikov@openvz.org>
AuthorDate: Thu, 10 May 2012 16:20:04 +0400
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Fri, 18 May 2012 13:07:40 +0200

sched: Taint kernel with TAINT_WARN after sleep-in-atomic bug

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 <khlebnikov@openvz.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20120510122004.4873.12726.stgit@zurg
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 kernel/sched/core.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 24ca677..ab9745f 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -3138,6 +3138,7 @@ static noinline void __schedule_bug(struct task_struct *prev)
 	if (irqs_disabled())
 		print_irqtrace_events(prev);
 	dump_stack();
+	add_taint(TAINT_WARN);
 }
 
 /*