Bug 16503

Summary:	Upgrade to 2.6.34.2 breaks ethernet network
Product:	Networking	Reporter:	Dave Morgan (davemorgan353)
Component:	Other	Assignee:	Arnaldo Carvalho de Melo (acme)
Status:	RESOLVED OBSOLETE
Severity:	normal	CC:	akpm, alan
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:		Subsystem:
Regression:	Yes	Bisected commit-id:

Description Dave Morgan 2010-08-03 20:14:22 UTC

Using Arch Linux with fully up-to-date system.

Upgrading kernel from 2.6.34.1 to 2.6.34.2 breaks my ethernet connection.  I get dhcp timeouts but no errors in the logs regarding the kernel or the card.

Dell Inspiron 1720.

03:00.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX (rev 02)

Downgrading the kernel fixes the issue.

Comment 1 Andrew Morton 2010-08-03 20:28:53 UTC

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

On Tue, 3 Aug 2010 20:14:34 GMT
bugzilla-daemon@bugzilla.kernel.org wrote:

> https://bugzilla.kernel.org/show_bug.cgi?id=16503
> 
>            Summary: Upgrade to 2.6.34.2 breaks ethernet network
>            Product: Networking
>            Version: 2.5
>           Platform: All
>         OS/Version: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: Other
>         AssignedTo: acme@ghostprotocols.net
>         ReportedBy: davemorgan353@btinternet.com
>         Regression: No
> 
> 
> Using Arch Linux with fully up-to-date system.
> 
> Upgrading kernel from 2.6.34.1 to 2.6.34.2 breaks my ethernet connection.  I
> get dhcp timeouts but no errors in the logs regarding the kernel or the card.
> 
> Dell Inspiron 1720.
> 
> 03:00.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX (rev
> 02)
> 
> Downgrading the kernel fixes the issue.
> 

There are no changes to b44.c in patch-2.6.34.2.  Perhaps you could
generate the dmesg logs for 2.6.34.1 and 2.6.34.2 and run `diff -u'
against them, see if anything interesting pops out?

Comment 2 Dave Morgan 2010-08-04 20:00:26 UTC

On 03/08/10 at 01:27pm, Andrew Morton wrote:
>
> (switched to email.  Please respond via emailed reply-to-all, not via the
> bugzilla web interface).
>
> On Tue, 3 Aug 2010 20:14:34 GMT
> bugzilla-daemon@bugzilla.kernel.org wrote:
>
> > https://bugzilla.kernel.org/show_bug.cgi?id=16503
> >
> >            Summary: Upgrade to 2.6.34.2 breaks ethernet network
> >            Product: Networking
> >            Version: 2.5
> >           Platform: All
> >         OS/Version: Linux
> >               Tree: Mainline
> >             Status: NEW
> >           Severity: normal
> >           Priority: P1
> >          Component: Other
> >         AssignedTo: acme@ghostprotocols.net
> >         ReportedBy: davemorgan353@btinternet.com
> >         Regression: No
> >
> >
> > Using Arch Linux with fully up-to-date system.
> >
> > Upgrading kernel from 2.6.34.1 to 2.6.34.2 breaks my ethernet connection. 
> I
> > get dhcp timeouts but no errors in the logs regarding the kernel or the
> card.
> >
> > Dell Inspiron 1720.
> >
> > 03:00.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX
> (rev
> > 02)
> >
> > Downgrading the kernel fixes the issue.
> >
>
> There are no changes to b44.c in patch-2.6.34.2.  Perhaps you could
> generate the dmesg logs for 2.6.34.1 and 2.6.34.2 and run `diff -u'
> against them, see if anything interesting pops out?
>

There's nothing obvious to me in the logs.

However, it looks like it may be related to the ssb issues affecting
b43.

https://bugzilla.kernel.org/attachment.cgi?id=27335&action=diff

There are reports of my card working with 2.6.35 so I will upgrade to
that version.

--
Dave.

Comment 3 Dave Morgan 2010-08-04 20:00:33 UTC

On 03/08/10 at 01:27pm, Andrew Morton wrote:
>
> (switched to email.  Please respond via emailed reply-to-all, not via the
> bugzilla web interface).
>
> On Tue, 3 Aug 2010 20:14:34 GMT
> bugzilla-daemon@bugzilla.kernel.org wrote:
>
> > https://bugzilla.kernel.org/show_bug.cgi?id=16503
> >
> >            Summary: Upgrade to 2.6.34.2 breaks ethernet network
> >            Product: Networking
> >            Version: 2.5
> >           Platform: All
> >         OS/Version: Linux
> >               Tree: Mainline
> >             Status: NEW
> >           Severity: normal
> >           Priority: P1
> >          Component: Other
> >         AssignedTo: acme@ghostprotocols.net
> >         ReportedBy: davemorgan353@btinternet.com
> >         Regression: No
> >
> >
> > Using Arch Linux with fully up-to-date system.
> >
> > Upgrading kernel from 2.6.34.1 to 2.6.34.2 breaks my ethernet connection. 
> I
> > get dhcp timeouts but no errors in the logs regarding the kernel or the
> card.
> >
> > Dell Inspiron 1720.
> >
> > 03:00.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX
> (rev
> > 02)
> >
> > Downgrading the kernel fixes the issue.
> >
>
> There are no changes to b44.c in patch-2.6.34.2.  Perhaps you could
> generate the dmesg logs for 2.6.34.1 and 2.6.34.2 and run `diff -u'
> against them, see if anything interesting pops out?
>

There's nothing obvious to me in the logs.

However, it looks like it may be related to the ssb issues affecting
b43.

https://bugzilla.kernel.org/attachment.cgi?id=27335&action=diff

There are reports of my card working with 2.6.35 so I will upgrade to
that version.

--
Dave.