Subject: Re: netconsole still hangs

From: Stephen Hemminger <[email-masked]>
Date: Thu, 13 Mar 2008 08:09:26 -0700

On Thu, 13 Mar 2008 00:59:01 -0700
Andrew Morton <[email-masked]> wrote:

> On Wed, 12 Mar 2008 23:10:53 -0700 (PDT) David Miller <[email-masked]> wrote:
> 
> > From: Andrew Morton <[email-masked]>
> > Date: Wed, 12 Mar 2008 16:57:17 -0700
> > 
> > > I reran the test on 2.6.24 and all seemed fine: the machine didn't hang and
> > > stopping the script stopped the netconsole output.
> > 
> > Can you go back and bisect the tree in one shot to the guilty
> > commit you found last time, and make sure this test case
> > works at that point?
> 
> Plain old
> 
> git-checkout 33f807ba0d9259e7c75c7a2ce8bd2787e5b540c7 seems to dtrt.
> 
> 
> 
> git-checkout 33f807ba0d9259e7c75c7a2ce8bd2787e5b540c7
> 
>   Fails very very easily.  Basically the machine never successfully boots.
> 
> 
> git-checkout 0953864160bdd28dfe45fd46fa462b4d2d53cb96
> 
>   Works OK.
> 
> 
> So yes, I'd say that the revert was not complete.
> 
> 
> aside: running that while loop just slays the machine.  It took 30 seocnds
> to respond to ^C (across ssh over the same link).  There's some severe
> starvation happening somewhere.

The other possible candidates for this are:

commit 0953864160bdd28dfe45fd46fa462b4d2d53cb96
Author: Stephen Hemminger <[email-masked]>
Date:   Mon Nov 19 19:23:29 2007 -0800

    [NETPOLL]: no need to store local_mac

commit 5106930bd6b57402205e3de54dae9476e215b622
Author: Stephen Hemminger <[email-masked]>
Date:   Mon Nov 19 19:18:11 2007 -0800

    [NETPOLL]: netpoll_poll() cleanup

What hardware is the problem seen on? Perhaps there is something different
to look for?