Re: [PATCH RFC 4/7] bridge: cfm: Kernel space implementation of CFM.

From: Henrik Bjoernlund
Date: Tue Sep 15 2020 - 04:54:39 EST


Thanks for the review. Comments below.

The 09/04/2020 08:02, Jakub Kicinski wrote:
>
> On Fri, 4 Sep 2020 09:15:24 +0000 Henrik Bjoernlund wrote:
> > + rcu_read_lock();
> > + b_port = rcu_dereference(mep->b_port);
> > + if (!b_port)
> > + return NULL;
> > + skb = dev_alloc_skb(CFM_CCM_MAX_FRAME_LENGTH);
> > + if (!skb)
> > + return NULL;
>
> net/bridge/br_cfm.c:171:23: warning: context imbalance in 'ccm_frame_build' - different lock contexts for basic block

I will assure that rcu_read_unlock() is called before any return.

--
/Henrik