[Intel-wired-lan] [e1000_netpoll] BUG: sleeping function called from invalid context at kernel/irq/manage.c:110
Fengguang Wu
fengguang.wu at intel.com
Thu Jul 28 13:30:03 UTC 2016
Hi Sabrina,
>The idea when this first came up was to skip the sleeping part of
>disable_irq():
>
>http://marc.info/?l=linux-netdev&m=142314159626052
>
>This fell off my todolist and I didn't send the conversion patches,
>which would basically look like this:
Yes it works in the several machines that had the BUG!
[ 23.806847] netpoll: netconsole: local port 6665
[ 23.807145] netpoll: netconsole: local IPv4 address 0.0.0.0
[ 23.807494] netpoll: netconsole: interface 'eth0'
[ 23.807799] netpoll: netconsole: remote port 6646
[ 23.808096] netpoll: netconsole: remote IPv4 address 192.168.1.1
[ 23.808474] netpoll: netconsole: remote ethernet address ff:ff:ff:ff:ff:ff
[ 23.808910] netpoll: netconsole: local IP 192.168.1.161
[ 23.811680] 28 Jul 19:42:10 ntpdate[376]: step time server 192.168.1.1 offset 1696.257557 sec
[ 23.811886] console [netcon0] enabled
[ 23.812131] netconsole: network logging started
Thanks,
Fengguang
>
>diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
>index 41f32c0b341e..b022691e680b 100644
>--- a/drivers/net/ethernet/intel/e1000e/netdev.c
>+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
>@@ -6713,20 +6713,20 @@ static irqreturn_t e1000_intr_msix(int __always_unused irq, void *data)
>
> vector = 0;
> msix_irq = adapter->msix_entries[vector].vector;
>- disable_irq(msix_irq);
>- e1000_intr_msix_rx(msix_irq, netdev);
>+ if (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);
>- e1000_intr_msix_tx(msix_irq, netdev);
>+ if (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);
>- e1000_msix_other(msix_irq, netdev);
>+ if (disable_hardirq(msix_irq))
>+ e1000_msix_other(msix_irq, netdev);
> enable_irq(msix_irq);
> }
>
>@@ -6750,13 +6750,13 @@ static void e1000_netpoll(struct net_device *netdev)
> e1000_intr_msix(adapter->pdev->irq, netdev);
> break;
> case E1000E_INT_MODE_MSI:
>- disable_irq(adapter->pdev->irq);
>- e1000_intr_msi(adapter->pdev->irq, netdev);
>+ if (disable_hardirq(adapter->pdev->irq))
>+ e1000_intr_msi(adapter->pdev->irq, netdev);
> enable_irq(adapter->pdev->irq);
> break;
> default: /* E1000E_INT_MODE_LEGACY */
>- disable_irq(adapter->pdev->irq);
>- e1000_intr(adapter->pdev->irq, netdev);
>+ if (disable_hardirq(adapter->pdev->irq))
>+ e1000_intr(adapter->pdev->irq, netdev);
> enable_irq(adapter->pdev->irq);
> br
>ak;
> }
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