From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031531AbWK3WHJ (ORCPT ); Thu, 30 Nov 2006 17:07:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1031530AbWK3WHJ (ORCPT ); Thu, 30 Nov 2006 17:07:09 -0500 Received: from c-71-198-216-253.hsd1.ca.comcast.net ([71.198.216.253]:53223 "EHLO localhost.localdomain") by vger.kernel.org with ESMTP id S1031531AbWK3WHH (ORCPT ); Thu, 30 Nov 2006 17:07:07 -0500 Subject: Re: 2.6.19-rt1 Bug From: Daniel Walker To: joel silvestre Cc: linux-kernel@vger.kernel.org, mingo@elte.hu In-Reply-To: <1164918963.3923.77.camel@zordi> References: <1164918963.3923.77.camel@zordi> Content-Type: text/plain; charset=UTF-8 Date: Thu, 30 Nov 2006 14:06:37 -0800 Message-Id: <1164924397.20941.2.camel@imap.mvista.com> Mime-Version: 1.0 X-Mailer: Evolution 2.6.3 (2.6.3-1.fc5.5) Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org /* * Spinlocks are used for interfaces that can be possibly called at * interrupt level */ ACPI_EXTERN raw_spinlock_t _acpi_gbl_gpe_lock; /* For GPE data structs and registers */ ACPI_EXTERN raw_spinlock_t _acpi_gbl_hardware_lock; /* For ACPI H/W except GPE registers */ The problem is these two raw locks. There don't look like they could get called from real interrupt context. Daniel On Thu, 2006-11-30 at 21:36 +0100, joel silvestre wrote: > Hi, > > comes from an Intel core duo laptop running > kernel-rt-2.6.19-1.rt1.0001.i686.rpm on Fedora 6. > > joël > > Nov 30 21:24:40 localhost kernel: BUG: scheduling with irqs disabled: > IRQ 9/0x00000001/77 > Nov 30 21:24:40 localhost kernel: caller is rt_spin_lock_slowlock > +0x106/0x18a > Nov 30 21:24:40 localhost kernel: [] dump_trace+0x64/0x1cc > Nov 30 21:24:40 localhost kernel: [] show_trace_log_lvl > +0x19/0x2e > Nov 30 21:24:40 localhost kernel: [] show_trace+0x12/0x14 > Nov 30 21:24:40 localhost kernel: [] dump_stack+0x17/0x19 > Nov 30 21:24:40 localhost kernel: [] schedule+0x71/0xe7 > Nov 30 21:24:40 localhost kernel: [] rt_spin_lock_slowlock > +0x106/0x18a > Nov 30 21:24:40 localhost kernel: [] rt_spin_lock+0x20/0x22 > Nov 30 21:24:40 localhost kernel: [] __wake_up+0x13/0x50 > Nov 30 21:24:40 localhost kernel: [] acpi_ec_gpe_handler > +0x54/0x8b > Nov 30 21:24:40 localhost kernel: [] acpi_ev_gpe_dispatch > +0x68/0x163 > Nov 30 21:24:40 localhost kernel: [] acpi_ev_gpe_detect > +0x99/0xe0 > Nov 30 21:24:40 localhost kernel: [] > acpi_ev_sci_xrupt_handler+0x15/0x1d > Nov 30 21:24:40 localhost kernel: [] acpi_irq+0xe/0x18 > Nov 30 21:24:40 localhost kernel: [] handle_IRQ_event > +0x45/0xc1 > Nov 30 21:24:40 localhost kernel: [] thread_simple_irq > +0x39/0x6c > Nov 30 21:24:40 localhost kernel: [] do_irqd+0xdd/0x298 > Nov 30 21:24:40 localhost kernel: [] kthread+0xc2/0xef > Nov 30 21:24:40 localhost kernel: [] kernel_thread_helper > +0x7/0x10 > Nov 30 21:24:40 localhost kernel: ======================= > Nov 30 21:24:41 localhost kernel: BUG: scheduling while atomic: IRQ > 9/0x00000001/77, CPU#1 > Nov 30 21:24:41 localhost kernel: [] dump_trace+0x64/0x1cc > Nov 30 21:24:41 localhost kernel: [] show_trace_log_lvl > +0x19/0x2e > Nov 30 21:24:41 localhost kernel: [] show_trace+0x12/0x14 > Nov 30 21:24:41 localhost kernel: [] dump_stack+0x17/0x19 > Nov 30 21:24:41 localhost kernel: [] __schedule+0x84/0xd91 > Nov 30 21:24:41 localhost kernel: [] schedule+0xcb/0xe7 > Nov 30 21:24:41 localhost kernel: [] rt_spin_lock_slowlock > +0x106/0x18a > Nov 30 21:24:41 localhost kernel: [] rt_spin_lock+0x20/0x22 > Nov 30 21:24:41 localhost kernel: [] __wake_up+0x13/0x50 > Nov 30 21:24:41 localhost kernel: [] acpi_ec_gpe_handler > +0x54/0x8b > Nov 30 21:24:41 localhost kernel: [] acpi_ev_gpe_dispatch > +0x68/0x163 > Nov 30 21:24:41 localhost kernel: [] acpi_ev_gpe_detect > +0x99/0xe0 > Nov 30 21:24:41 localhost kernel: [] > acpi_ev_sci_xrupt_handler+0x15/0x1d > Nov 30 21:24:41 localhost kernel: [] acpi_irq+0xe/0x18 > Nov 30 21:24:41 localhost kernel: [] handle_IRQ_event > +0x45/0xc1 > Nov 30 21:24:41 localhost kernel: [] thread_simple_irq > +0x39/0x6c > Nov 30 21:24:41 localhost kernel: [] do_irqd+0xdd/0x298 > Nov 30 21:24:41 localhost kernel: [] kthread+0xc2/0xef > Nov 30 21:24:41 localhost kernel: [] kernel_thread_helper > +0x7/0x10 > Nov 30 21:24:41 localhost kernel: ======================= > > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/