netdev - Re: [PATCH net v2] ipv6: clean up dev_snmp6 proc entry when we fail to initialize inet6

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Message-ID: <1446650594.4184.25.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Wed, 04 Nov 2015 07:23:14 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Sabrina Dubroca <sd@...asysnail.net>
Cc:	netdev@...r.kernel.org, dvyukov@...gle.com,
	hannes@...essinduktion.org, cwang@...pensource.com
Subject: Re: [PATCH net v2] ipv6: clean up dev_snmp6 proc entry when we fail
 to initialize inet6_dev

On Wed, 2015-11-04 at 14:47 +0100, Sabrina Dubroca wrote:
> In ipv6_add_dev, when addrconf_sysctl_register fails, we do not clean up
> the dev_snmp6 entry that we have already registered for this device.
> Call snmp6_unregister_dev in this case.
> 
> Reported-by: Dmitry Vyukov <dvyukov@...gle.com>
> Signed-off-by: Sabrina Dubroca <sd@...asysnail.net>
> ---
> 
> v2: we cannot call snmp6_unregister_dev from addrconf_core.c, this
>     breaks CONFIG_IPV6=m, instead do the clean up directly from
>     ipv6_add_dev
>     thanks Cong.

Any idea when the bug was added ?

Can we please add a proper Fixes: tag for patches that need to be
backported to stable versions ?

It seems to be

Fixes: a317a2f19da7d ("ipv6: fail early when creating netdev named all or default")

So this goes back to linux-3.17 ?

Thanks a lot Sabrina !


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