netdev - Re: [PATCH net-next 0/2] net: ipv4: remove erroneous advancement of list pointer

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Message-ID: <20190625091903.gepfjgpiksslnyqy@breakpoint.cc>
Date:   Tue, 25 Jun 2019 11:19:03 +0200
From:   Florian Westphal <fw@...len.de>
To:     Ran Rozenstein <ranro@...lanox.com>
Cc:     Tariq Toukan <tariqt@...lanox.com>,
        Florian Westphal <fw@...len.de>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Maor Gottlieb <maorg@...lanox.com>,
        "edumazet@...gle.com" <edumazet@...gle.com>
Subject: Re: [PATCH net-next 0/2] net: ipv4: remove erroneous advancement of
 list pointer

Ran Rozenstein <ranro@...lanox.com> wrote:
> > On 6/17/2019 5:02 PM, Florian Westphal wrote:
> > > Tariq reported a soft lockup on net-next that Mellanox was able to
> > > bisect to 2638eb8b50cf ("net: ipv4: provide __rcu annotation for ifa_list").
> > >
> > > While reviewing above patch I found a regression when addresses have a
> > > lifetime specified.
> > >
> > > Second patch extends rtnetlink.sh to trigger crash (without first
> > > patch applied).
> > >
> > 
> > Thanks Florian.
> > 
> > Ran, can you please test?
> 
> Tested, still reproduce.

Can you be a little more specific? Is there any reproducer?