linux-kernel - Re: [e1000_netpoll] BUG: sleeping function called from invalid context at kernel/irq/manage.c:110

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Message-ID: <alpine.DEB.2.11.1607280941450.19896@nanos>
Date:	Thu, 28 Jul 2016 09:45:12 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	nick <xerofoify@...il.com>
cc:	Fengguang Wu <fengguang.wu@...el.com>,
	Eric Dumazet <eric.dumazet@...il.com>,
	LKML <linux-kernel@...r.kernel.org>, netdev@...r.kernel.org,
	Satyam Sharma <satyam@...radead.org>,
	intel-wired-lan@...ts.osuosl.org,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
	Ye Xiaolong <xiaolong.ye@...el.com>
Subject: Re: [e1000_netpoll] BUG: sleeping function called from invalid
 context at kernel/irq/manage.c:110

On Tue, 26 Jul 2016, nick wrote:
> diff --git a/drivers/net/ethernet/intel/e1000/e1000_main.c b/drivers/net/ethernet/intel/e1000/e1000_main.c
> index f42129d..e1830af 100644
> --- a/drivers/net/ethernet/intel/e1000/e1000_main.c
> +++ b/drivers/net/ethernet/intel/e1000/e1000_main.c
> @@ -3797,7 +3797,7 @@ static irqreturn_t e1000_intr(int irq, void *data)
>  		hw->get_link_status = 1;
>  		/* guard against interrupt when we're going down */
>  		if (!test_bit(__E1000_DOWN, &adapter->flags))
> -			schedule_delayed_work(&adapter->watchdog_task, 1);
> +			mod_work(&adapter->watchdog_task, jiffies + 1);

And that's not even funny anymore. Are you using a random generator to create
these patches?