Re: [PATCH] ipv6: addrconf: Avoid addrconf_disable_change() using RCU read-side lock

From: David Miller
Date: Thu Jan 19 2017 - 11:22:18 EST


From: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Date: Thu, 19 Jan 2017 16:26:21 +0800

> Just like commit 4acd4945cd1e ("ipv6: addrconf: Avoid calling
> netdevice notifiers with RCU read-side lock"), it is unnecessary
> to make addrconf_disable_change() use RCU iteration over the
> netdev list, since it already holds the RTNL lock, or we may meet
> Illegal context switch in RCU read-side critical section.
>
> Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>

Applied and queued up for -stable, thanks.