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From: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [BUG?][2.6.25-mm1] sleeping during IRQ disabled
Date: Wed, 07 May 2008 09:12:58 +0000	[thread overview]
Message-ID: <4821729A.5020802@jp.fujitsu.com> (raw)
In-Reply-To: <20080502182440.6E5F.KOSAKI.MOTOHIRO@jp.fujitsu.com>

Shaohua Li wrote:
> On Wed, 2008-05-07 at 08:59 +0200, Petr Tesarik wrote:
>> BTW why must be interrupts disabled in this path? Would it be possible
>> to re-enable them for the duration of the synchronization, or does it
>> harm somehow?
> No idea how to fix it. i have the same question why
> do_notify_resume_user in called with interrupt disabled.
> do_notify_resume_user->ia64_do_signal->get_signal_to_deliver which could
> sleep (like try_to_freeze) and this routine calls
> spin_lock_irq()/spin_unlock_irq(), this will enable interrupt.

Yes, I found it too.
It seems that ia64_do_signal should be called with interrupts enabled.

Thanks,
H.Seto

  parent reply	other threads:[~2008-05-07  9:12 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-05-02  9:27 [BUG?][2.6.25-mm1] sleeping during IRQ disabled KOSAKI Motohiro
2008-05-02 10:02 ` Petr Tesarik
2008-05-02 22:53 ` Luck, Tony
2008-05-03  7:28 ` KOSAKI Motohiro
2008-05-04 15:47 ` KOSAKI Motohiro
2008-05-05  8:40 ` Petr Tesarik
2008-05-05 15:43 ` Petr Tesarik
2008-05-05 15:48 ` Petr Tesarik
2008-05-05 18:37 ` Luck, Tony
2008-05-06  3:09 ` KOSAKI Motohiro
2008-05-06  3:12 ` KOSAKI Motohiro
2008-05-06 18:25 ` Luck, Tony
2008-05-06 20:03 ` Luck, Tony
2008-05-06 21:41 ` Luck, Tony
2008-05-06 21:54 ` Luck, Tony
2008-05-07  0:57 ` Hidetoshi Seto
2008-05-07  6:59 ` Petr Tesarik
2008-05-07  8:54 ` Shaohua Li
2008-05-07  9:05 ` Hidetoshi Seto
2008-05-07  9:12 ` Hidetoshi Seto [this message]
2008-05-07 18:20 ` Roland McGrath
2008-05-07 21:50 ` Luck, Tony
2008-05-07 23:23 ` Roland McGrath

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