netdev - Re: netlink & rhashtable status

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Message-ID: <1431575890.27831.34.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Wed, 13 May 2015 20:58:10 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Herbert Xu <herbert@...dor.apana.org.au>
Cc:	David Miller <davem@...emloft.net>, Thomas Graf <tgraf@...g.ch>,
	netdev <netdev@...r.kernel.org>
Subject: Re: netlink & rhashtable status

On Thu, 2015-05-14 at 11:34 +0800, Herbert Xu wrote:
> On Wed, May 13, 2015 at 08:17:43PM -0700, Eric Dumazet wrote:
> >
> > The initial bug report was on 3.18 for sure.
> > 
> > (Tester had to leave the program run ~8 hours to get the problem, on a 8
> > vCPU VM)
> > 
> > I can reproduce the bug quite easily (in a few seconds) on 4.0.3, I did
> > not spent lot of time trying 3.18, but it seems a bit harder.
> 
> No what I'm asking is on 3.18 was it permanent? I can imagine
> there being a lookup bug in 3.18 that triggers during a rehash
> but I cannot find any permanent corruption issues.

Let me try to reproduce this on 3.18.13. I'll give you an update.



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