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Date: Wed, 22 Jul 2009 10:55:01 -0500 From: "Serge E. Hallyn" <serue@...ibm.com> To: Stephen Hemminger <shemminger@...tta.com> Cc: David Miller <davem@...emloft.net>, containers@...ts.osdl.org, sachinp@...ibm.com, netdev@...r.kernel.org, matthltc@...ibm.com, linux-kernel@...r.kernel.org Subject: Re: [PATCH 1/1] veth: don't free priv->status until dev->destructor (v2) Quoting Stephen Hemminger (shemminger@...tta.com): > On Wed, 15 Jul 2009 08:50:12 -0700 (PDT) > David Miller <davem@...emloft.net> wrote: > > > From: "Serge E. Hallyn" <serue@...ibm.com> > > 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). Yup, I was doing that too, but couldn't reproduce as yet. > > 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. Ok, thanks - I'll generate a new patch against a fresh pull when I can confirm that it actually solves the problem. > My usual way of doing this is: > > # (sleep 30; cat /sys/class/net/ethX/statistics/tx_bytes) & > # rmmod the_buggy_driver > > wait... Can you oops the kernel this way on latest netns? thanks, -serge -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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