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Date: Wed, 28 Jun 2006 18:02:16 +0100 (BST)
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To: Milan Svoboda <msvoboda@ra.rockwell.com>
cc: linux-kernel@vger.kernel.org
Subject: Re: [BUG] Linux-2.6.17-rt3 on arm ixdp465
In-Reply-To: <44A29AA1.3020202@ra.rockwell.com>
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From: Esben Nielsen <nielsen.esben@googlemail.com>
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On Wed, 28 Jun 2006, Milan Svoboda wrote:

> Hello,
>
> I tried this kernel on arm ixdp465, it works well, but I got many
> of these messages:
>
> BUG: scheduling with irqs disabled: IRQ 25/0x00000000/683
> caller is rt_lock_slowlock+0xd8/0x1c8
> BUG: scheduling with irqs disabled: IRQ 25/0x00000000/683
> caller is rt_lock_slowlock+0xd8/0x1c8
> BUG: scheduling with irqs disabled: IRQ 25/0x00000000/683
> caller is rt_lock_slowlock+0xd8/0x1c8
> BUG: scheduling with irqs disabled: IRQ 25/0x00000000/683
> caller is rt_lock_slowlock+0xd8/0x1c8
> BUG: scheduling with irqs disabled: IRQ 25/0x00000000/683
> caller is rt_lock_slowlock+0xd8/0x1c8
>
> # cat /proc/interrupts
>           CPU0
> 5:      29620   IXP4xx Timer Tick
> 15:        876   serial
> 25:       3813   eth0
> Err:          0
>

Looks like a bug in your ethernet driver, which is?
It could be that that driver is not SMP compliant and uses irq disable/enable
as locking method instead of a spinlock.

Esben

> PS: Please CC me, I'm not subscribed...
>
> Best Regards,
> Milan Svoboda
>
>
>