Re: [PATCH 1/1] veth: don't free priv->status until dev->destructor (v2)

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On Wed, 15 Jul 2009 08:50:12 -0700 (PDT)
David Miller <davem@xxxxxxxxxxxxx> wrote:

> From: "Serge E. Hallyn" <serue@xxxxxxxxxx>
> Date: Fri, 26 Jun 2009 11:24:18 -0500
> 
> > I haven't been able to reproduce the original oops though (been
> > trying to cat the stats sysfs files while rmmoding veth, to no
> > avail, and haven't found an original bug report or testcase), so
> > can't verify whether this patch prevents the original oops.
> 
> If you 'cat' it you're unlikely to trigger the oops.
> 
> You have to hold the sysfs files open, and then elsewhere do the
> rmmod, wait, and then continue with some access to those open sysfs
> file descriptors (f.e. do some reads).
> 
> I'd also need this patch to be against current sources as they'll
> never apply since I did the revert quite some time ago.
> 
> Thanks.


My usual way of doing this is:

#  (sleep 30; cat /sys/class/net/ethX/statistics/tx_bytes) &
# rmmod the_buggy_driver

wait...


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