netdev - Re: [PATCH net-next 0/2] net: ipv4: fix circular-list infinite loop

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Date:   Thu, 27 Jun 2019 09:54:58 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     fw@...len.de
Cc:     netdev@...r.kernel.org, ranro@...lanox.com, tariqt@...lanox.com
Subject: Re: [PATCH net-next 0/2] net: ipv4: fix circular-list infinite loop

From: Florian Westphal <fw@...len.de>
Date: Thu, 27 Jun 2019 14:03:31 +0200

> Tariq and Ran reported a regression caused by net-next commit
> 2638eb8b50cf ("net: ipv4: provide __rcu annotation for ifa_list").
> 
> This happens when net.ipv4.conf.$dev.promote_secondaries sysctl is
> enabled -- we can arrange for ifa->next to point at ifa, so next
> process that tries to walk the list loops forever.
> 
> Fix this and extend rtnetlink.sh with a small test case for this.

Series applied, thanks Florian.