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From: Thomas Gleixner <tglx@linutronix.de>
To: Dave Airlie <airlied@gmail.com>
Cc: LKML <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>,
	Jesse Barnes <jbarnes@virtuousgeek.org>
Subject: Re: "do_IRQ: 0.89 No irq handler for vector (irq -1)"
Date: Fri, 8 Oct 2010 09:52:11 +0200 (CEST)	[thread overview]
Message-ID: <alpine.LFD.2.00.1010080941160.7653@localhost6.localdomain6> (raw)
In-Reply-To: <alpine.LFD.2.00.1010072329220.3354@localhost6.localdomain6>

On Thu, 7 Oct 2010, Thomas Gleixner wrote:
  Oct  7 23:21:24 ionos kernel: Console: switching to colour VGA+ 80x25
> Oct  7 23:21:31 ionos kernel: drm: unregistered panic notifier
> Oct  7 23:21:31 ionos kernel: vga_switcheroo: disabled
> Oct  7 23:21:31 ionos kernel: [drm:drm_mm_takedown] *ERROR* Memory manager not clean. Delaying takedown
> 
> That one scares me :)
> 
> Oct  7 23:21:32 ionos kernel: BUG: unable to handle kernel paging request at 00000037362e313a
> 
> We are again dereferencing a user space address.

Further debugging shows that the interrupt is torn down and the
vectors are cleared. On modprobe the irq is set up again and a
different vector is assigned.

The interrupt which comes in is going to the old vector. So something
is stale in the card.

Thanks,

	tglx

  reply	other threads:[~2010-10-08  7:52 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-10-07  8:55 "do_IRQ: 0.89 No irq handler for vector (irq -1)" Dave Airlie
2010-10-07  9:05 ` Dave Airlie
2010-10-07 20:38 ` Thomas Gleixner
2010-10-07 21:35   ` Thomas Gleixner
2010-10-08  7:52     ` Thomas Gleixner [this message]
2010-10-08 11:46       ` Dave Airlie
2010-10-11 22:48         ` Jesse Barnes
2010-10-11 23:40           ` Jesse Barnes
2010-10-12 19:01             ` Rafael J. Wysocki
2010-10-12 19:49               ` Jesse Barnes
2010-11-16 19:46                 ` Florian Mickler
2010-11-16 20:11                   ` Jesse Barnes
2010-11-16 20:47                     ` Florian Mickler
2010-10-13 21:20               ` Jesse Barnes
2010-10-13 21:48                 ` Rafael J. Wysocki
2010-10-08 11:53     ` Chris Wilson
2010-10-08 12:15       ` Thomas Gleixner
2010-10-08 12:30         ` Chris Wilson
2010-10-10 17:46 ` Maciej Rutecki

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