linux-kernel - Re: mthca double free irqs

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Message-ID: <86802c440906121022s532ee0f7tc556251d22ffd139@mail.gmail.com>
Date:	Fri, 12 Jun 2009 10:22:49 -0700
From:	Yinghai Lu <yhlu.kernel@...il.com>
To:	Roland Dreier <rdreier@...co.com>
Cc:	"Barnes, Jesse" <jesse.barnes@...el.com>,
	Matthew Wilcox <matthew@....cx>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, general@...ts.openfabrics.org,
	linux-kernel@...r.kernel.org
Subject: Re: mthca double free irqs

On Fri, Jun 12, 2009 at 7:31 AM, Roland Dreier<rdreier@...co.com> wrote:
> Thanks, will take a look.  It does seem this is on an error path:
>
>  > [  606.818317] ib_mthca 0000:c4:00.0: NOP command failed to generate
>  > interrupt (IRQ 98), aborting.
>  > [  606.826709] ib_mthca 0000:c4:00.0: BIOS or ACPI interrupt routing problem?
>
> So your system already had problems -- the driver didn't get an
> expected interrupt from the device.

I knew that. but we should not get that double freeing.

BIOS doesn't allocate proper MMIO range for that card.

YH
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