Subject: Re: [Bugme-new] [Bug 16383] New: Regression with e1000e from 2.6.34.1 to 2.6.35-rc5

From: Andrew Morton <[email-masked]>
Date: Wed, 21 Jul 2010 13:48:43 -0700

(switched to email.  Please respond via emailed reply-to-all, not via the
bugzilla web interface).

On Wed, 14 Jul 2010 00:44:51 GMT
[email-masked] wrote:

> https://bugzilla.kernel.org/show_bug.cgi?id=16383
> 
>            Summary: Regression with e1000e from 2.6.34.1 to 2.6.35-rc5
>            Product: Drivers
>            Version: 2.5
>     Kernel Version: 2.6.35
>           Platform: All
>         OS/Version: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: high
>           Priority: P1
>          Component: Network
>         AssignedTo: [email-masked]
>         ReportedBy: [email-masked]
>         Regression: Yes
> 
> 
> Created an attachment (id=27094)
>  --> (https://bugzilla.kernel.org/attachment.cgi?id=27094)
> .config
> 
> Networking stops working with 2.6.35 (tested rc-3 and rc5).

This is a post-2.6.34 regression, guys.  There's some more info in bugzilla.

> # egrep "(e1000|eth)" dmesg-2.6.34.1
> e1000e: Intel(R) PRO/1000 Network Driver - 1.0.2-k2
> e1000e: Copyright (c) 1999 - 2009 Intel Corporation.
> e1000e 0000:00:19.0: PCI INT A -> GSI 20 (level, low) -> IRQ 20
> e1000e 0000:00:19.0: setting latency timer to 64
> 0000:00:19.0: eth0: (PCI Express:2.5GB/s:Width x1) 5c:ff:35:02:2d:a9
> 0000:00:19.0: eth0: Intel(R) PRO/1000 Network Connection
> 0000:00:19.0: eth0: MAC: 9, PHY: 10, PBA No: a002ff-0ff
> e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX
> 
> # egrep "(e1000|eth)" dmesg-2.6.35-rc5
> e1000e: Intel(R) PRO/1000 Network Driver - 1.0.2-k4
> e1000e: Copyright (c) 1999 - 2009 Intel Corporation.
> e1000e 0000:00:19.0: PCI INT A -> GSI 20 (level, low) -> IRQ 20
> e1000e 0000:00:19.0: setting latency timer to 64
> e1000e 0000:00:19.0: (unregistered net_device): Failed to initialize MSI
> interrupts.  Falling back to legacy interrupts.
> e1000e 0000:00:19.0: eth0: (PCI Express:2.5GB/s:Width x1) 5c:ff:35:02:2d:a9
> e1000e 0000:00:19.0: eth0: Intel(R) PRO/1000 Network Connection
> e1000e 0000:00:19.0: eth0: MAC: 9, PHY: 10, PBA No: a002ff-0ff
> e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX
> 
> I hadn't set CONFIG_PCI_MSI but enabling it on 2.6.35-rc5 made no difference.
>