linux-kernel - Re: e1000_netpoll() , BUG: sleeping function called from invalid context

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Date:   Wed, 1 Mar 2017 23:44:22 +0100
From:   Gabriel C <nix.or.die@...il.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     Cong Wang <xiyou.wangcong@...il.com>,
        lkml <linux-kernel@...r.kernel.org>,
        "David S. Miller" <davem@...emloft.net>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>
Subject: Re: e1000_netpoll() , BUG: sleeping function called from invalid
 context



On 01.03.2017 23:38, Thomas Gleixner wrote:
> On Wed, 1 Mar 2017, Gabriel C wrote:
>> On 01.03.2017 18:13, Thomas Gleixner wrote:
>>> On Sat, 18 Feb 2017, Gabriel C wrote:
>>>> That got changed in commit 3111912971251 which got into Linus tree during
>>>> the 4.10 merge window. So it is in 4.10-rc8.
>>>>
>>>> Confused.
>>>
>>> I'm still confused. Gabriel, can you please try to reproduce with 4.10
>>> final?
>>>
>>
>> Sure , do you want plain 4.10.0 or 4.10.1 ?
>>
>> Btw is possible to rename e1000_netpoll() from e1000e driver
>> to e1000e_netpoll() so we know what driver is in use ?
>
> Grr. yes. That would be definitely helpful. I was staring into the wrong
> one of course.
>
>> My card uses the e1000e driver..
>
> Does the patch below fix it?

I'll test you patch in a bit and let you know.

>
> Thanks,
>
> 	tglx
> 	
> 8<--------------
>
> --- a/drivers/net/ethernet/intel/e1000e/netdev.c
> +++ b/drivers/net/ethernet/intel/e1000e/netdev.c
> @@ -6716,19 +6716,19 @@ static irqreturn_t e1000_intr_msix(int _
>
>  		vector = 0;
>  		msix_irq = adapter->msix_entries[vector].vector;
> -		disable_irq(msix_irq);
> +		disable_hardirq(msix_irq);
>  		e1000_intr_msix_rx(msix_irq, netdev);
>  		enable_irq(msix_irq);
>
>  		vector++;
>  		msix_irq = adapter->msix_entries[vector].vector;
> -		disable_irq(msix_irq);
> +		disable_hardirq(msix_irq);
>  		e1000_intr_msix_tx(msix_irq, netdev);
>  		enable_irq(msix_irq);
>
>  		vector++;
>  		msix_irq = adapter->msix_entries[vector].vector;
> -		disable_irq(msix_irq);
> +		disable_hardirq(msix_irq);
>  		e1000_msix_other(msix_irq, netdev);
>  		enable_irq(msix_irq);
>  	}
>