--- x/net/hsr/hsr_device.c +++ y/net/hsr/hsr_device.c @@ -226,9 +226,11 @@ static netdev_tx_t hsr_dev_xmit(struct s skb->dev = master->dev; skb_reset_mac_header(skb); skb_reset_mac_len(skb); - spin_lock_bh(&hsr->seqnr_lock); + local_bh_disable(); + spin_lock_nested(&hsr->seqnr_lock, 1); hsr_forward_skb(skb, master); - spin_unlock_bh(&hsr->seqnr_lock); + spin_unlock(&hsr->seqnr_lock); + local_bh_enable(); } else { dev_core_stats_tx_dropped_inc(dev); dev_kfree_skb_any(skb);