Re: [3.8-rc1] Networking problems after pulling-in net.git#master

On Sun, Dec 23, 2012 at 1:40 PM, Sedat Dilek [off-list ref] wrote:

On Sun, Dec 23, 2012 at 1:26 PM, Sedat Dilek [off-list ref] wrote:

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On Sun, Dec 23, 2012 at 12:42 PM, Borislav Petkov [off-list ref] wrote:

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On Sun, Dec 23, 2012 at 04:14:39AM +0100, Sedat Dilek wrote:

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Hi,

after reading the thread "Regression in 3.8-rc1: "BUG: sleeping
function called from invalid context"" [1] I decided to pull-in
net.git#master (up to commit 9b1536c490d5: "bridge: call
br_netpoll_disable in br_add_if") on top of Linus upstream.

With this kernel I can't neither ping my router nor does DNS work.
IIRC there were 6 commits, not sure which of them is culprit.

I tried the v3.8-rc1-raring from [2] which works nicely here on
Ubuntu/precise AMD64.
Can't say if NetworkManager is involved or not.

Does that mean that with Linus upstream, i.e. 3.8-rc1, you can ping your
router, etc?

If so, you could bisect the 6 commits...

Nah, he said that b-word :-).
The machine I am working on has some hardware damage (keyboard gets
not detected on bios start or even within daily-work, recently I could
not type further while writing an email, so raping that machine is not
a good idea. I could bisect within a reduced localmodconfig setup. No
big promises...)

Starting bisect session with a "localmodconfig" setup... (bad: last
commit and good: v3.8-rc1)...

The culprit commit here seems to be...

commit 9650388b5c56578fdccc79c57a8c82fb92b8e7f1
Author: Eric Dumazet [off-list ref]
Date:   Fri Dec 21 07:32:10 2012 +0000

    ipv4: arp: fix a lockdep splat in arp_solicit()

...see also attached git-bisect log-files.

For the sake of completeness I have attached also my kernel-config
file and an output of lspci.

While my last steps of bisecting I also hit a MEI problem on restart,
I have seen a fix "[PATCH] mei: fix mismatch in mutex unlock-lock in
mei_amthif_read()" for this on LKML [1].

Hope this helps you to track down the problem.

Feel free to add any credits...

- Sedat -

[1] http://marc.info/?l=linux-kernel&m=135612627527193&w=2

- Sedat -

[1] http://www.h-online.com/open/features/Good-and-quick-kernel-configuration-creation-1403046.html
[2] http://www.kernel.org/pub/software/scm/git/docs/git-bisect.html

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- Sedat -

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Thanks.

--
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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