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Date: Tue, 19 Apr 2011 14:39:09 -0400
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>, rtc-linux@googlegroups.com,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH] rtc-cmos: do not call rtc_update_irq when cmos->rtc is
 uninitialized
Message-ID: <20110419183909.GA7273@dumpdata.com>
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On Tue, Apr 19, 2011 at 06:14:48PM +0100, Stefano Stabellini wrote:
> Hi all,
> I have a 32 bit kernel compiled with:
> 
> CONFIG_HPET_TIMER
> CONFIG_HPET_EMULATE_RTC
> CONFIG_RTC_DRV_CMOS
> 
> that crashes reliably on boot on xen with the following stack trace:

The commit f6d5b33125c4fa63c16f7f54c533338c9695d82c
Author: John Stultz <john.stultz@linaro.org>
Date:   Tue Mar 29 18:00:27 2011 -0700

    RTC: Fix early irqs caused by calling rtc_set_alarm too early
    

doesn't fix it for you? (it is in 2.6.39-rc4)