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