Re: [PATCH net] ipv6: addrconf: Avoid calling netdevice notifiers with RCU read-side lock

[David Miller <davem@xxxxxxxxxxxxx>]

From: Ben Hutchings <bhutchings@xxxxxxxxxxxxxx>
Date: Tue, 14 Aug 2012 19:54:51 +0100

> Cong Wang reports that lockdep detected suspicious RCU usage while
> enabling IPV6 forwarding:
 ...
> addrconf_forward_change() uses RCU iteration over the netdev list,
> which is unnecessary since it already holds the RTNL lock.  We also
> cannot reasonably require netdevice notifier functions not to sleep.
> 
> Reported-by: Cong Wang <amwang@xxxxxxxxxx>
> Signed-off-by: Ben Hutchings <bhutchings@xxxxxxxxxxxxxx>

Applied and queued up for -stable, thanks Ben.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html