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Date: Mon, 7 Jul 2008 08:35:19 +0200 From: Ingo Molnar <mingo@...e.hu> To: Alexander Beregalov <a.beregalov@...il.com> Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, linux-next@...r.kernel.org, linux-mm@...ck.org Subject: Re: next-0704: WARNING: at kernel/sched.c:4254 add_preempt_count; PANIC * Alexander Beregalov <a.beregalov@...il.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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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