Commit 9e624651 authored by Yang Yingliang's avatar Yang Yingliang Committed by Paolo Abeni
Browse files

xen/netback: don't call kfree_skb() under spin_lock_irqsave() 



It is not allowed to call kfree_skb() from hardware interrupt
context or with interrupts being disabled. So replace kfree_skb()
with dev_kfree_skb_irq() under spin_lock_irqsave().

Fixes: be81992f ("xen/netback: don't queue unlimited number of packages")
Signed-off-by: default avatarYang Yingliang <yangyingliang@huawei.com>
Reviewed-by: default avatarPaul Durrant <paul@xen.org>
Link: https://lore.kernel.org/r/20221205141333.3974565-1-yangyingliang@huawei.com


Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
parent 92439a85

drivers/net/xen-netback/rx.c

+1 −1
Original line number Diff line number Diff line
@@ -92,7 +92,7 @@ void xenvif_rx_queue_tail(struct xenvif_queue *queue, struct sk_buff *skb) 
		struct net_device *dev = queue->vif->dev;



		netif_tx_stop_queue(netdev_get_tx_queue(dev, queue->id));

		kfree_skb(skb);

		dev_kfree_skb_irq(skb);

		queue->vif->dev->stats.rx_dropped++;

	} else {

		if (skb_queue_empty(&queue->rx_queue))