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 |
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* 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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