Messages in this thread |  | | | Date | Mon, 7 Jul 2008 08:35:19 +0200 | | From | Ingo Molnar <> | | Subject | Re: next-0704: WARNING: at kernel/sched.c:4254 add_preempt_count; PANIC | |
* Alexander Beregalov <a.beregalov@gmail.com> wrote:
> Hi
>
> WARNING: at kernel/sched.c:4254 add_preempt_count+0x61/0x63()
> Modules linked in: i2c_nforce2
> Pid: 3620, comm: rtorrent Not tainted 2.6.26-rc8-next-20080704 #5
this warning is what triggers:
#ifdef CONFIG_DEBUG_PREEMPT
/*
* Underflow?
*/
if (DEBUG_LOCKS_WARN_ON((preempt_count() < 0)))
return;
i.e. preempt counter underflow. That can happen either due to unbalanced
preempt_disable()/preempt_enable() pairs, or can happen due to stack
overflow/corruption.
Ingo
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